U.S. PATENT AND TRADEMARK OFFICE
Information Products Division |
U.S. Patent Classification System - Classification Definitions
as of June 30, 2000
Patents classified in a subclass may be accessed by either clicking on
the subclass number
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( please note that patents for some subclasses may not be available )
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Classification Index
Explanation of Data web page.
(definitions have been obtained from the
Patents ASSIST CD-ROM which
is produced by the U.S. Patent and Trademark Office
Electronic Products Branch)
Class 137
FLUID HANDLING
Class Definition:
This is the residual class for fluid material handling, and
takes processes, systems, combinations, subcombinations and
certain elements pertaining thereto not otherwise
classified.
Fluid materials include gas and liquids primarily, but the
handling of other flowable materials, as fluent granular
solids, is also found.
Handling for this class comprises the transfer of fluent
material by flow, as by confining, directing, causing and/or
controlling the flow, and includes making the material
available for flow or separating a smaller from a larger body
of fluid material, as by tanks, containers, receivers, traps,
etc., or pipes or conduits, with or without siphons, pumps,
pressure or displacing fluids or other flow imparting means.
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
The class is divided into two groups, subclasses 1+ for
processes, and subclasses 38 to 616 for automatic or
condition change responsive devices, special types and
combinations of the necessary elements of the class with the
subject matter of other classes or with features added to
perfect the operation of the material handling means, and the
more complex devices of the class generally grouped under the
title "systems." Class 251, Valves and Valve Actuation,
provides for valves and valve actuation not otherwise
classified. Subclasses 777 to 802 comprise subcombinations
and elements pertaining to fluid handling not particularly
related to any of the special types and not otherwise
classified.
Automatic or condition change responsive systems and devices
of this class are discussed more at length in (1) Automatic
Control below, (2) Plural Valves, and (3) Valve Actuation.
(1) AUTOMATIC CONTROL
Devices and systems in which the presence or absence of, or a
change in, a condition is sensed and control exercised as a
result thereof are commonly called automatic, and in this
class form the basis of a number of "special type" and
general categories.
Line condition change response refers to control exercised
over the material being handled in the system as a result of
a change in the condition of that material, as temperature,
quantity, pressure or rate of flow. Condition change
response does not include the mere fact of flow or those
fluid pressure operated devices where change does not affect
the operation of the device, nor those where the flow is
changed by external means for the purpose of causing
operation of the control means or with that result.
Combinations of an automatic valve with a nonautomatic valve
have been excluded for line condition change responsive
groupings because the system comprising such combinations is
not primarily automatic.
Fluid actuated or retarded valves which have not been
considered automatic even though they depend on the presence
of fluid flowing in the line, and have been classified in the
following subclasses in Class 251; are (1) fluid actuated
valves with compulsory cut-off after a flow period
(subclasses 15+), (2) dash-pot or fluid controlled timers and
retarders for valves, operating fluid for which is derived
from the line controlled (subclasses 50+).
The following groups of subject matter in this class are
wholly or partly of automatic or closely related types. In
each instance the search notes in the definitions of the
particular subclasses referenced in Subclass References of
the Current Class, below, should be consulted for related
art.
Atmospheric
Boiler (see temperature)
Combustion (see temperature)
Discriminating Valves (see level response).
Failure Responsive and Testing Devices
Freeze (see Temperature).
Heating (see Temperature)
Inertia or Position Change
Level Response or Maintenance, Floats, Gravitating Tanks,
including: (A) By pressure connection at liquid level; (B) By
gravitating vessel; and (C) By floats - This class is the
generic place for floats, per se, and systems controlled by
floats are classified in various appropriate groups, the
subclasses in Subclass References to the Current Class
provide especially for float control or operation.
Line Condition Change Response - See the definition, second
paragraph of this section, and listings under Plural heading
below
Periodic or Cyclic
Plural - For a discussion of plural valves as such, see
following section (4). In this category, plural flow
controllers, valves, or condition responsive means may be (A)
plural valves controlling different flows, (B) plural valves
controlling the same flow, (C) one valve responding to
changes in plural conditions, or (D) plural valves each
responding to a different condition change. Subclass
References to the Current Class includes subclasses
references to the following: (1) Plural Flows; (2) Plural
Condition Responses; (3) Plural Controls, One Condition
Responsive -Where the controls are separate valves
controlling the same flow and one is not automatic or line
condition responsive the patent is excluded from line
condition responsive categories. See section 2, definitions.
Such patents may appear in the earlier special type groups of
subclasses, however:
Pressure Modulating
Pump
Safety cut-offs - For resetting operations see (3) Manual
Control, Resetting, and Adjusting Devices, especially the
subclass references to Cut-offs With Resetting.
Speed Responsive Control
Temperature. (See Boiler, Combustion)
(2) PLURAL VALVES
Control means for plural flow paths comprising a single
movable body having plural seats or plural port obstructing
positions have been classified as multiway valve units in
subclasses 625+. Valves associated with dispensers have been
classified in Class 222, Dispensing. See especially the
Search Notes in the appropriate subclasses of these classes
and in the main class definitions, as well as the Search
Notes to the subclasses listed below.
In Class 137 devices for controlling plural flows have been
regarded as comprising a system (1) if additional flow
confining means was claimed to a greater extent than as a
mere mounting for the valves, (2) if some definite
significant relation between fact of flow and/or the
direction of flow in the plural flow paths exists, or (3) if
one or more conduits or passages have two or more valves or
cut-off devices which function to control the flow of the
fluid by means of the valves. Some plural flow path controls
of various automatic or condition change responsive types are
also found in the earlier subclass groups, but on that basis
rather than as systems in and of themselves.
Plural valves having a common means for simultaneous or
alternating actuation, are for the most part in appropriate
subclasses under subclass 561. Some valves, because of motor
or complex mechanical actuation, have been classified in
Class 251, Valves and Valve Actuation, under the type of
actuation.
For plural automatic or condition responsive valves, see (1)
Automatic Control, "Plural Condition Responses", above and
the associated references in Subclass References to the
Current Class.
For plural valves, one automatic or condition responsive and
one or more mechanically or manually actuated, see section
for Automatic Control, Plural Controls, "One Condition
Responsive", above and the associated references in Subclass
References to the Current Class.
(3) MANUAL CONTROL, RESETTING AND ADJUSTING DEVICES
See section for Automatic Control, Plural Controls, One
Condition Responsive, above for notes on manual control of
valves which are also condition responsive and for manual
valves combined with automatic or condition responsive
valves.
The term "manual" in some instances includes nonautomatic
valve actuation of other types, as by mechanical movements or
even motors.
The term "control" or "actuation" as applied to the operation
of valves does not include the resetting of valves which are
either condition responsive or trip actuated to move from a
preset position and which do not return to that position when
the operating force is removed or reversed, but require
intervention of an external independent agency to restore
them to their set position. Mere adjustment of bias,
spacing, seating or actuator connection of a valve is not
included in these terms.
(A) Flow Control or Valve Actuation - See references to (1)
Automatic Control, "Plural Controls, One Condition
Responsive", for manual and automatic actuation of valves,
and also (2) "Plural Valves," for plural valves, including
actuation.
(B) Cut-Offs with Resetting - Also see references to (1)
Automatic Control, "Safety Cut-offs."
(C) Adjustment
SEE OR SEARCH THIS CLASS, SUBCLASS:
2 for processes of controlling a flow by condition or
characteristic of a fluid, especially subclasses 3+ for
mixture control. (Automatic Control - Line Condition Change
Response)
3 processes of mixing plural fluids of diverse
characteristics or conditions. (Automatic Control - Plural
Flows)
6 processes of mixing controlled by heat of combustion of
mixture. (Automatic Control - Combustion)
8 processes for producing uniform flow. (Automatic Control
- Pump)
13 processes for affecting flow by the addition of energy
(Automatic Control - Pump)
11 Processes of regulating boiler feed water level.(Automatic
Control - Boiler)
11 processes of regulating boiler water level. (Automatic
Control - Level Response or Maintenance, Floats, Gravitating
Tanks)
10 processes of flow control by speed of fluid. (Automatic
Control - Speed Responsive Control)
13 processes of affecting flow by the addition of heat.
(Automatic Control - Temperature)
38 for change of altitude as reflected by change in air
pressure, see subclass 81. (Automatic Control - Inertia or
Position Change)
39 control by change of position or inertia of system with
second control.. (Automatic Control - Plural Controls, One
Condition Responsive)
39 control by change or position or inertia of system with
second control. (Automatic Control - Plural Condition
Responses)
40 marine governors. (Automatic Control - Combustion)
49 speed responsive valve control with manual control.
(Automatic Control - Plural Controls, One Condition
Responsive)
76 and 77, heat destructible or fusible control elements
with external closing means. (Automatic Control - Plural
Controls, One Condition Responsive)
80 atmospheric temperature change responsive control with
additional diverse control. (Automatic Control - Plural
Controls, One Condition Responsive)
41 float controlled marine governors. (Automatic Control -
Level Response or Maintenance, Floats, Gravitating Tanks, By
floats)
47 speed responsive valve control. (Automatic Control -
Speed Responsive Control)
43 vent closing in overturned containers. (Automatic Control
- Safety cut-offs)
50 and 57, excess speed responsive controls.(Automatic
Control - Safety cut-offs)
50 and 51+, speed responsive control with other condition
responsive valve control.(Automatic Control - Plural
Condition Responses)
50 and 57, excess speed cut-offs. (Manual Control, Resetting
And Adjusting Devices - Cut-Offs with Resetting)
52 speed responsive valve control with governor drive
failure control. (Automatic Control - Failure Responsive and
Testing Devices)
59 freeze condition responsive safety cut-off. (Automatic
Control - Temperature)
65 combustion failure responsive safety cut-offs for
burners. (Manual Control, Resetting And Adjusting Devices -
Cut-Offs with Resetting)
65 combustion failure responsive fuel safety cut-offs for
burners. (Automatic Control - Boiler)
65 combustion failure responsive fuel safety cut-off for
burners. (Automatic Control - Temperature)
65 combustion failure responsive fuel safety cut-offs for
burners. (Automatic Control - Combustion)
65 combustion failure responsive fuel safety cut-off for
burners. (Automatic Control - Safety cut-offs)
65 combustion failure responsive cut-off for burner fuel.
(Automatic Control - Failure Responsive and Testing Devices)
67 frangible, soluble, deformable or fusible control
elements, the failure of which caused operation of safety
means. (Automatic Control - Failure Responsive and Testing
Devices)
67 destructible or deformable element control, especially
subclasses 72+, heat destructible or fusible. (Automatic
Control - Combustion)
72 heat destructible or fusible element control. (Automatic
Control - Temperature)
73 heat destructible of fusible element control with second
sensing means. (Automatic Control - Plural Condition
Responses)
75 heat destructible or fusible safety cut-offs. (Manual
Control, Resetting And Adjusting Devices - Cut-Offs with
Resetting)
80 atmospheric temperature change responsive control with
additional diverse control. (Automatic Control - Plural
Condition Responses)
82 pressure modulating relays or followers. (Automatic
Control - Pressure Modulating)
98 self-proportioning flow systems. (Automatic Control -
Plural Condition Responses)
75 heat destructible or fusible safety cut-off elements.
(Automatic Control - Safety cut-offs)
78 for atmospheric condition change responsive controls.
(Automatic Control - atmospheric)
79 atmospheric temperature change responsive control.
(Automatic Control - Temperature)
87.01 plural flows. (Automatic Control - Line Condition
Change Response)
87.01 self-proportioning or correlating systems. (Automatic
Control - Plural Flows)
88 apparatus for controlling mixtures. (Automatic Control
- Line Condition Change Response)
96 control of pump-motive fluid by level of pumped liquid.
(Automatic Control - Level Response or Maintenance, Floats,
Gravitating Tanks)
98 self-proportioning flow systems. (Automatic Control -
Line Condition Change Response)
90 mixture condition maintaining or sensing by temperature
or heat content. (Automatic Control - Temperature)
94 fuel controlled by boiler or water system condition.
(Automatic Control - Temperature)
94 fuel controlled by boiler or water system
condition.(Automatic Control - Boiler)
94 fuel controlled by boiler or water system condition.
(Automatic Control - Combustion)
101.25 for self-proportioning systems with liquid level
sensing means. (Automatic Control - Level Response or
Maintenance, Floats, Gravitating Tanks)
103 vacuum or suction pulsator type systems. (Automatic
Control - Periodic or Cyclic)
106 reversing or 4-way valve systems. (Automatic Control -
Periodic or Cyclic)
109 self-controlled branch flow systems. (Automatic
Control - Line Condition Change Response)
115.03 by-pass or relief responsive to change in rate or
main line flow in self-controlled branch systems. (Automatic
Control - Speed Responsive Control)
129 163, 190, 401, and 404, sinking or bucket type floats.
(Automatic Control - Level Response or Maintenance, Floats,
Gravitating Tanks, By gravitating vessel)
120 161, 162+, 189, 402, and 403+, especially subclass 408,
gravitating tanks. (Automatic Control - Level Response or
Maintenance, Floats, Gravitating Tanks, By gravitating
vessel)
120 and 122, filling successive tanks by float controlled
receiver. (Automatic Control - Level Response or
Maintenance, Floats, Gravitating Tanks, By floats)
129 sinking float operated siphons. (Automatic Control -
Level Response or Maintenance, Floats, Gravitating Tanks, By
floats)
129 163, 190, 401, and 404, for sinking or bucket type
floats: see level response. (Automatic Control - Level
Response or Maintenance, Floats, Gravitating Tanks, By
floats)
131 float controlled discharge from a siphon to a receiver.
(Automatic Control - Level Response or Maintenance, Floats,
Gravitating Tanks, By floats)
132 periodic or accumulation responsive siphon discharge.
(Automatic Control - Periodic or Cyclic)
133 periodic siphons with manual control. (Automatic Control
- Plural Controls, One Condition Responsive)
135 float operated inlet for siphons. (Automatic Control -
Level Response or Maintenance, Floats, Gravitating Tanks, By
floats)
137 for float operated vents for trapped air in a siphon.
(Automatic Control - Level Response or Maintenance, Floats,
Gravitating Tanks, By floats)
154 diverse fluid containing pressure systems, especially
subclass 155, gas lift valves for wells, 180, 183, 199, 204,
213+. (Automatic Control - Line Condition Change Response)
154 155, 156+, for diverse fluid containing pressure systems
which repeatedly discharge gas and/or liquid upon
accumulation thereof. (Automatic Control - Periodic or
Cyclic);
154 diverse fluid containing pressure systems, especially
subclasses 156+, gas pressure discharge of liquid feed traps
to receivers under pressure and 173+, plural discriminating
outlets for diverse fluids in pressure systems. (Automatic
Control - Plural Flows)
156 gas pressure discharge of liquid feed traps to
boilers.(Automatic Control - Boiler)
158 gas pressure discharge of liquid feed trap controlled by
level in boiler or receiver. (Automatic Control - Level
Response or Maintenance, Floats, Gravitating Tanks, By
pressure connection at liquid level)
169 manual control of gas pressure in discharging liquid
feed traps to boilers. (Manual Control, Resetting And
Adjusting Devices - Flow Control or Valve Actuation)
171 fluid separating traps or vents.(Automatic Control -
Boiler)
171 accumulation responsive fluid separating traps and
vents. (Automatic Control - Periodic or Cyclic)
163 165+, 185+, 192+, and 202, for float control in diverse
fluid containing pressure systems. (Automatic Control -
Level Response or Maintenance, Floats, Gravitating Tanks, By
floats)
171 fluid separating traps and vents. (Automatic Control -
Discriminating Valves)
173 plural discriminating outlets for diverse fluids in
pressure systems. (Automatic Control - Plural Condition
Responses)
183 199+, for accumulation responsive gas pressure discharge
of liquid feed traps to receivers under pressure. (Automatic
Control - Periodic or Cyclic)
184 plural successively opened discriminating fluid
responsive valves for liquid in diverse fluid containing
pressure systems. (Automatic Control - Plural Condition
Responses)
185 for gas collecting floats, e.g., inverted bucket type.
(Automatic Control - Level Response or Maintenance, Floats,
Gravitating Tanks, By floats)
213 liquid level responsive gas vent or whistle.(Automatic
Control - Boiler)
213 liquid level responsive gas vent or whistle.
(Automatic Control - Level Response or Maintenance, Floats,
Gravitating Tanks, By pressure connection at liquid level)
215 back flow prevention by vacuum breaking. (Automatic
Control - Line Condition Change Response)
214 high and low level responsive gas vents or whistles for
diverse fluid containing pressure systems. (Automatic Control
- Plural Condition Responses)
218 back flow preventing air vent in liquid line with
coacting valve in liquid flow path. (Automatic Control -
Plural Condition Responses)
220 line condition change responsive valves of the
Larner-Johnson type. (Automatic Control - Line Condition
Change Response)
223 tire filling chuck and stem type connectors. (Automatic
Control - Plural Controls, One Condition Responsive)
224 pressure-responsive pressure-control means for tire
inflation devices. (Automatic Control - Pump)
226 coaxial inflation and relief valves for tire inflation
with pressure-responsive pressure-control means. (Automatic
Control - Plural Condition Responses)
229 selectively connected gauge and inflow or relief
passages in tire inflation devices. (Plural Valves)
230 stem attached relief valves for tires. (Automatic
Control - Line Condition Change Response)
238 steam sterilizing. (Automatic Control - Temperature)
255 plural tanks or compartments with parallel flow. (Plural
Valves)
270-270.5, for a convertible unit orientable in a single
location between plural positions.
271 for convertible units interchangeable between alternate
locations.
274 286+, 614+, and 616, valve actuators comprising movable
flow pipes. (Manual Control, Resetting And Adjusting Devices
- Flow Control or Valve Actuation)
285 299 and 300, serial valves in hydrants. (Plural Valves)
289 balanced valves in hydrants. (Plural Valves)
290 291+, and 298, hydrant valve actuators. (Manual Control,
Resetting And Adjusting Devices - Flow Control or Valve
Actuation)
297 hydrant casing with heater. (Automatic Control -
Temperature)
301 hydrant protection against freezing. (Automatic Control
- Temperature)
309 regenerative furnace type reversing valves. (Automatic
Control - Combustion)
309 regenerative furnace type reversing valves. (Plural
Valves)
310 regenerative furnace type reversing valves with cooling
means. (Automatic Control - Temperature)
334 heating or cooling of fluid handling systems. (Automatic
Control - Temperature)
334 heating, especially subclasses 335+, burner type.
(Automatic Control - Combustion)
345 locomotive associated systems. (Automatic Control -
Combustion)
344 heating, especially subclasses 335+ burner
type.(Automatic Control - Boiler)
346 locomotive boiler or steam dome associated
systems.(Automatic Control - Boiler)
386 liquid level responsive or maintaining
systems.(Automatic Control - Boiler)
389 liquid level responsive systems with a second diverse
control. (Automatic Control - Plural Condition Responses)
390 liquid level responsive systems with manual control.
(Automatic Control - Plural Controls, One Condition
Responsive)
391 control of both inflow and outflow of a tank by liquid
level responsive means. (Automatic Control - Plural Condition
Responses)
393 liquid level control or maintenance. (Automatic
Control - Level Response or Maintenance, Floats, Gravitating
Tanks, By pressure connection at liquid level)
396 for self-emptying tanks responsive to level of
accumulated liquid. (Automatic Control - Periodic or Cyclic)
397 398+, 401, 404, and 409+, for float control in liquid
level responsive or maintaining systems. (Automatic Control
- Level Response or Maintenance, Floats, Gravitating Tanks,
By floats)
399 low level safety cut-off of tank outflow. (Automatic
Control - Safety cut-offs)
399 float operated low level safety cut-offs. (Manual
Control, Resetting And Adjusting Devices - Cut-Offs with
Resetting)
405 oil burner fuel overflow preventing safety cut-offs
operated by accumulated fluid weight. (Manual Control,
Resetting And Adjusting Devices - Cut-Offs with Resetting)
405 oil burner fuel overflow preventing safety cut-offs
operated by weight of accumulated fuel. (Automatic Control -
Combustion)
436 float arm operated valves with restrictors, e.g.,
silencers. (Automatic Control - Plural Controls, One
Condition Responsive)
456 line condition change responsive safety cut-offs
requiring resetting. (Manual Control, Resetting And Adjusting
Devices - Cut-Offs with Resetting)
475 pop valve with adjustable choke (Automatic Control -
Plural Controls, One Condition Responsive)
481 combustion engine induction type governor with manual
modifier. (Automatic Control - Plural Controls, One Condition
Responsive)
495 line condition responsive valves with a separate
connected fluid reactor surface and manual or external
control for the valve. (Automatic Control - Plural Controls,
One Condition Responsive)
479 combustion engine induction type governors. (Automatic
Control - Combustion)
457 safety cut-offs responding to thermal conditions and
requiring resetting. (Automatic Control - Temperature)
458 and 459+, line condition change responsive valves of the
safety cut-off type responding to velocity or rate of flow.
(Automatic Control - Speed Responsive Control)
458 safety cut-offs responsive to both high and low pressure
or velocity. (Automatic Control - Plural Condition
Responses)
482 combustion engine induction type. (Automatic Control -
Plural Condition Responses)
493 line condition change responsive valves of the
bidirectional type governor with suction compensator.
(Automatic Control - Plural Condition Responses)
456 line condition change responsive safety cut-off valves
requiring resetting. (Automatic Control - Safety cut-offs)
455 line condition change responsive valves, especially
469+, pop valves. (Automatic Control - Boiler)
486 for pilot or servo-controlled valves responsive to
change in rate of fluid flow. (Automatic Control - Speed
Responsive Control)
497 for valves with separate connected fluid reactor surface
responsive to change in rate of fluid flow. (Automatic
Control - Speed Responsive Control)
468 line condition thermal change responsive valves.
(Automatic Control - Temperature)
482 combustion engine induction type governor with suction
compensator. (Automatic Control - atmospheric)
455 line condition change responsive valves. (Automatic
Control - Line Condition Change Response)
506 and 512+, plural line condition change responsive
valves. (Automatic Control - Plural Condition Responses)
522 for safety valves with testing means. (Automatic Control
- Failure Responsive and Testing Devices)
524 for a valve (i.e., check valve, etc.) that directly
responds to a change in line condition having a bias
adjustment indicator.
530 for a reciprocating valve (i.e., check valve, etc.) that
directly responds to a change in line condition having a bias
fixed or adjusted by a cam.
531 for a reciprocating valve (i.e., check valve, etc.) that
directly responds to a change in line condition having a bias
fixed or adjusted by varying its lever.
533 position or extent of motion indicators for fluid
handling apparatus. (Manual Control, Resetting And Adjusting
Devices - Adjustment)
571 plural tanks or compartments connected for serial flow.
(Plural Valves)
583 systems with plural openings, one a gas vent or access
opening. (Plural Valves)
586 access opening interlock with outlet valve actuator.
(Manual Control, Resetting And Adjusting Devices - Flow
Control or Valve Actuation)
595 601, 607, 609, 888+, and 896+, plural valves with common
operator in plural flow paths, either separate or branching.
(Plural Valves)
596 stop and waste systems. (Plural Valves)
598 hill holders for hydraulic brake lines. (Automatic
Control - Plural Controls, One Condition Responsive)
606 and 861+, flow control means for plural flows in
distribution systems. (Plural Valves)
613 distribution systems comprising a single flow path with
plural serial valves and/or closures. (Plural Valves)
622 multiple valve type fluid distributors for plural
chamber servo motors. (Plural Valves)
624.11 for timer controlled flow. (Manual Control, Resetting
And Adjusting Devices - Flow Control or Valve Actuation)
624.22 for time cam-operated trips. (Manual Control,
Resetting And Adjusting Devices - Cut-Offs with Resetting)
625 multiway valve units. (Plural Valves)
624.14 for self-cycling flows. (Automatic Control - Line
Condition Change Response)
624.27 for line condition change responsive release of
valve. (Automatic Control - Line Condition Change Response)
625.61 for variable orifice modulator for pilot valve of
supply and exhaust valve. (Automatic Control - Plural
Controls, One Condition Responsive)
624.13 for repeating cyclic control. (Automatic Control -
Periodic or Cyclic)
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 11 for heat motor
actuators for valves. (Automatic Control - Temperature)
251, Valves and Valve Actuation, 16 for main line cut-off
after flow period reset by operation of serial main valve.
(Automatic Control - Safety cut-offs)
251, Valves and Valve Actuation, 12, for fluid actuated or
retarded valves, especially subclasses 15+ for compulsory
cut-off after flow period, and subclass 50 for line pressure
connected chambers for retarding or timing valves.
(Automatic Control - Line Condition Change Response)
251, Valves and Valve Actuation, subclass 11 for buoyancy
motor actuators for valves. (Automatic Control - Level
Response or Maintenance, Floats, Gravitating Tanks, By
floats)
251, Valves and Valve Actuation, subclass 27 for servo
failure responsive control of a fluid servo operated valve
and 69, for electrical trip actuated valves with trip
operation on failure of electric power. (Automatic Control -
Failure Responsive and Testing Devices)
251, Valves and Valve Actuation, 16 for serial main line
cut-off and manual valves, the cut-off operating after a
predetermined flow and being reset only by closing the serial
manual or mechanically operated valve; subclass 117 for valve
and restrictors in parallel flow passages; subclasses 118+
for valves and serial restrictors; subclasses 129+ for valve
actuators comprising plural solenoids, which may operate
separate valves; and 281+ for balanced valves. (Plural
Valves)
251, Valves and Valve Actuation; subclass 3, for pattern
tracer controlled actuators; subclass 11, for heat or
buoyancy motor actuators; subclass 12+, for fluid actuators
or retarder.; subclass 64, for nonfluid retarder.; subclass
65, for permanent magnet actuators.; subclass 66, for biased
trip actuators; subclass 75, for snap action actuators.;
subclass 76, for impact type actuators; subclass 77+, for
actuators with lost motion.; subclass 89, for means for
holding an actuator in set position; subclass 128and 335, for
seals for actuator connecting means; subclass 128and 291+,
for detachable actuators; subclass 129+, for electrical
actuators; subclass 149+and 149.8, for valves operated by
conduit motion; subclass 213+, for mechanical movement
actuators; subclass 289, for actuation from plural position.;
subclass 290, for plural neutral positions of an actuator;
subclass 293, for actuator extensions; subclass 294, for
flexible actuators; subclass 295, for pedal actuators;
subclass 339, for actuators extending through fluid flow
path; subclass 340, for actuators surrounding flow pipes;
subclass 341 and 349, for valve actuators wherein part of the
valve body is movable. (Manual Control, Resetting And
Adjusting Devices - Flow Control or Valve Actuation)
251, Valves and Valve Actuation, 15, for fluid actuated
valves with compulsory cut-off after a flow period; 48+, for
fluid retarders or timers for valves; subclasses 64+, for
nonfluid retarders for valves; 66+, for biased trip valve
actuation. (Manual Control, Resetting And Adjusting Devices
- Cut-Offs with Resetting)
251, Valves and Valve Actuation, subclass 35 for a valve
actuated or retarded by a fluid type servomotor having a
choke passage that varies according valve position, subclass
42 for a fluid actuated or retarded valve having choke
passage pressure type servomotor including an adjustable
opening limit for a main valve, subclass 60 for a fluid
actuated or retarded valve having an adjustable limit stop,
subclasses 84-88 for valve heads movable connected for
accommodation to seat, subclasses 120-122 for a valve having
a movable or resilient material guide or restrictor, subclass
233 for a valve having a variable leverage lever actuator
that is adjustable during operation or subclass 234 for a
valve having an adjustable leverage lever.
417, Pumps, for pumps, per se. For distinction of the line
between Classes 137 and 417, see the class definition.
(Automatic Control - Pump)
GLOSSARY:
SPECIAL TYPE CATEGORIES
Those comprising a group of related patents directed toward
solving a problem in one specific field of activity, which
have been classified on the basis of and under a title
reflecting that activity rather than on a generalized basis.
Examples of special type categories are 94, Fuel controlled
by boiler or water system condition; 108, Pump unloader type
(indented under Self-proportioning or correlating systems).
SYSTEM
A term applied to any apparatus of the class which comprises
more than a single flow path and/or a single valve unit. It
may include only an unvalved branched flow path or a single
flow path having two or more valve units. In some instances
subcombinations or elements having special utility in the
combination and having no other classification have been
included in the group of subclasses pertaining to the system,
as subclasses 777-802, Expansible Chamber Devices.
VALVES AND VALVE ACTUATION
The term "valve unit," as used above, is applied to either a
single or multiway valve. In the multiway type plural
passages are controlled by valve means having plural flow
closing areas or points, but the entire means is housed in a
single casing or organized as a body or unit. Valve units as
such are classified in subclasses 625+. The class also
provides for some valve units under the special titles.
Radiator vent check valves, Reversing cokes and valves, Flush
or water closet valves, Drain valves, Float valves,
Temperature operated cut-off valves, Safety valves, and
certain analogous types. The class also takes valves
combined with other structure, as the tire inflation type
combined with or adapted for connection with inflation means
and/or the inflatable article. Class 251, Valves and Valve
Actuation provides for valves combined with certain
actuators, particularly the fluid and electric motors and the
more complex mechanical movement actuators.
The term "Valves" includes variable restrictors, which
frequently cannot be distinguished as claimed, and have been
set apart only in certain subclasses having the term
restrictor or choke in the title, as subclasses 436+, and
475+, primarily because of their special function as
silencers. Closures are also frequently indistinguishable
from valves, particularly as used and claimed in fluid
handling systems. In some instances they have been
classified with valves, as in subclasses 613+, Single flow
path with plural serial valves and/or closures and Class 251,
Valves and Valve Actuation, provides for restrictors or flow
guides in subclasses 118.01+.
SUBCLASSES
Subclass:
1
This subclass is indented under the class definition.
Processes.
(1) Note. All patents containing method claims drawn to the
method of operation of any of the systems or parts thereof
involved in the class are included in this and the indented
subclasses, but methods of making parts of the system are not
included. They will be found in the subclass providing for
the system or part.
(2) Note. This subclass includes, for example, methods of
operation of speed regulators for prime movers, valves, fluid
motors; methods of developing fluid pressures by series
parallel combinations of pumps, tanks or pipes; methods for
affecting fluid flow by using pipe sections of varying
diameter or joined at critical angles, or by slugging.
SEE OR SEARCH CLASS:
166, Wells, 244.1 for process of flowing or treating a well;
and particularly subclasses 373+ for a method of operating a
valve, closure, or changeable restrictor in a well wherein
some significant manipulative step regarding the well is
recited.
210, Liquid Purification or Separation, subclass 606, 631,
632, 639, 663+, 696+, 702+, and 749+ for a process comprising
the step of adding a chemical to a liquid with treatment of
the liquid.
222, Dispensing, subclass 1 for processes of dispensing.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
414, Material or Article Handling, 800 for a process of
material or article handling.
Subclass:
2
This subclass is indented under subclass 1. Processes in
which one or more conditions or characteristics of a fluent
material are determined and used to control the system in
such a manner as to cause delivery of controlled quantities
of a fluent material at a part of the system.
(1) Note. See the main class definition, for collected
search notes on automatic fluid handling devices of this and
related classes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
455 for line condition change responsive valves, and see the
search notes to subclass 455.
Subclass:
3
This subclass is indented under subclass 2. Processes in
which two or more fluent materials of different conditions or
characteristics are mixed and the determined condition or
characteristic may be taken from any or all the fluent
materials and used to control the quantitative flow in any or
all the branches or in the mixed channel.
SEE OR SEARCH THIS CLASS, SUBCLASS:
87.01 for self proportioning or correlating systems,
especially subclasses 88+ for those involving mixture
condition maintaining or sensing.
Subclass:
4
This subclass is indented under subclass 3. Processes in
which the determined condition is the consistency of the
mixture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
92 for systems for mixture condition maintaining or sensing
by viscosity or consistency.
467.5 for line consistency responsive flow controller.
Subclass:
5
This subclass is indented under subclass 3. Processes in
which the determined condition is the conductivity of the
mixture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
93 for systems for maintaining or sensing a mixture
condition by optical or chemical properties.
Subclass:
6
This subclass is indented under subclass 3. Processes in
which the determined condition or characteristic is the heat
of combustion of the mixture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
90 for systems of mixture condition maintaining or sensing
by temperature or heat content.
SEE OR SEARCH CLASS:
431, Combustion, subclass 12 for a process of combustion
involving the control or proportioning of burner feed.
Subclass:
7
This subclass is indented under subclass 3. Processes in
which the determined condition or characteristic is a
pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
87.01 for self-correlating or proportioning flow systems
controlled by the pressure in one or more flow lines or
branches.
Subclass:
8
This subclass is indented under subclass 2. Processes in
which one or more characteristics or conditions of a fluent
material is determined and used to control the system in such
a manner as to cause a uniform flow of a fluent material
through a part of the system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
494 particularly subclasses 505+ for pressure regulators
having a separate connected reactor service.
517 for direct response condition change controlled valves
of the pressure regulating type, and see the search notes to
subclass 517.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 55 for dispensers which maintain a
constant weight, volume or pressure by means controlled by
the output.
Subclass:
9
This subclass is indented under subclass 2. Processes in
which one or more conditions of a fluent material is
determined and used to produce or control the flow of a
fluent material at a part of the system, which flow is
regulated by the condition or conditions sensed so as to vary
proportionally therewith.
(1) Note. The flow in which the condition is sensed may be
the controlled flow or a different flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
82 for pressure modulating relays or followers, per se.
98 for self-proportioning flow systems.
109 for self-controlled branched flow systems.
Subclass:
10
This subclass is indented under subclass 2. Processes in
which the condition or characteristic determined is the speed
of the fluent material of the system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
497 for line condition responsive valves which are
responsive to a change in the rate of fluid flow, and see the
search notes to subclass 497.
Subclass:
11
This subclass is indented under subclass 2. Processes in
which one or more conditions or characteristics of a fluent
material is determined and used to control the flow of boiler
feed water.
SEE OR SEARCH THIS CLASS, SUBCLASS:
94 for fuel control devices for boilers responsive to boiler
or water system conditions.
156 for gas pressure discharge of liquid feed traps to
boilers.
386 for liquid level responsive or maintaining systems.
SEE OR SEARCH CLASS:
122, Liquid Heaters and Vaporizers, 451 for boiler feeders
combined with boilers, and subclasses 412+ for boiler feed
heaters.
Subclass:
12
This subclass is indented under subclass 2. Processes in
which the condition or characteristic which is determined is
a fluid pressure and the determination is used to cause
delivery of controlled quantity of a fluent material at a
part of the system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
7 for processes of mixture control depending on pressure
sensing.
455 for line condition change responsive valves, and see the
search notes to subclass 455.
Subclass:
12.5
This subclass is indented under subclass 1. Processes for
handling potable liquids which are impregnated with gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
154 for systems which contain, under pressure, a plurality
of diverse type fluids, as gas and liquids, and especially
170.1+ for apparatus for controlling foam in handling such
liquids, and 206+ for gas pressure storage over or
displacement of liquids in such systems.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 1 for dispensing methods and
subclasses 394 and 396 to 402 for apparatus for dispensing
liquids under fluid (gas) pressure.
426, Food or Edible Material: Processes, Compositions, and
Products, appropriate subclasses, especially 474+ for process
involving gas-liquid contact including preparation of
carbonated beverages.
Subclass:
13
This subclass is indented under subclass 1. Processes in
which the flow of fluent material is facilitated by the
addition of material which affects the flow characteristics
of the fluent material, or by the application of heat or
other forms of energy.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 for processes of mixing plural fluids with automatic
control.
88 for automatic mixture condition maintaining by the
addition of materials, etc.
334 for fluid handling means combined with heating means,
and see the search notes thereto.
565.01 for distribution systems comprising pumps, and see
the search notes thereto.
803 for a pure fluid device or system capable of performing
the process of this subclass (13).
SEE OR SEARCH CLASS:
208, Mineral Oils: Processes and Products, subclass 370 for
miscellaneous treatments of mineral oils during
transportation.
507, Earth Boring, Well Treating, and Oil Field Chemistry,
subclass 90 for compositions for preventing contaminant
deposits in petroleum oil conduits and methods of preventing
such deposits involving no significant manipulative steps.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, appropriate subclasses for subject matter
relating to: colloid systems (such as sols*, emulsions,
dispersions, foams, aerosols, smokes, gels, or pastes) or
wetting agents (such as leveling, penetrating, or spreading);
subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to
use in making or stabilizing colloid systems; compositions
and subcombination compositions specialized and designed for
or peculiar to use in breaking (resolving) or inhibiting
colloid systems; processes of making the compositions or
systems of the class; processes of breaking (resolving) or
inhibiting colloid systems; in each instance, when
generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed
art.
520, Synthetic Resins or Natural Rubbers, appropriate
subclasses, particularly Class 523, subclass 175 for a
composition containing a synthetic resin or natural rubber
having utility related to improving drag reduction formation
or systems which are effective for reducing the dynamic drag
of a turbulent fluid in contact with a surface or to
processes of preparing said composition.
Subclass:
14
This subclass is indented under subclass 1. Processes in
which the pressure of the fluent material is reduced for the
purpose of facilitating handling of the material or avoiding
damage to the equipment, or equalized with the pressure in
another part of the system or a container to facilitate
transfer of the fluent material or of control thereof, or
regulated to maintain the pressure of the fluent material at
a desired value.
SEE OR SEARCH THIS CLASS, SUBCLASS:
7 for processes of mixing fluids automatically controlled by
pressure.
12 for processes for controlling the flow of material by
sensing the pressure thereof.
Subclass:
15.01
Cleaning, repairing, or assembling:
This subclass is indented under subclass 1. Subject matter
wherein the method comprises the removal of undesirable
material from the system, restoration of the system or its
component to a sound condition, or connecting together
various components of the system. [figure] [caption] [figure]
[caption] [figure] [caption]Figures 1, 2, and 3: A typical
example of the subject matter showing various steps of
assembling and mounting a faucet structure. A - Sink deck; B
- Valve stem; C - Nut; D - Protective shield; E - Groove; F -
"C" clip; G - Spout tube; H - Spout bolt; J - Clamping screw;
K - Wrench; L - Draw spout.
SEE OR SEARCH THIS CLASS, SUBCLASS:
237-246.23, With cleaner, lubrication added to fluid or
liquid sealing at a valve interface.
315.01-329.4, for a fluid handling system with repair,
tapping or assembly means.
SEE OR SEARCH CLASS:
29, Metal Working, subclasses 402.01-402.21 for a method of
mechanical repair.
166, Wells, subclass 277 for a process of repairing an
object in a well, subclasses 311-312 for a process of
cleaning or unloading a well or subclasses 378-380 for a
process of assembling a well part.
Subclass:
15.02
Repairing or assembling hydrant (e.g., fireplug, etc.):
This subclass is indented under subclass 15.01. Subject
matter wherein the process of repairing or assembling is
directed to a system having a discharge pipe including a
valve and a spout, at which water may be drawn from a water
main or water system. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Fire hydrant; B - Nozzle;
C - Cap; D - Jet of water; E - Nozzle expander bolted to "B"
by bolts "F"; F - Bolts; G - Shutoff valve; H - Flange; J -
Bolts secure to "E" and "G".
SEE OR SEARCH THIS CLASS, SUBCLASS:
236.1 for a fluid handling distribution system involving a
geographic feature.
272-308, for a hydrant type.
Subclass:
15.03
Gas or water meter repairing or assembling:
This subclass is indented under subclass 15.01. Subject
matter wherein the process of repairing or assembling is
directed to an instrument for measuring and recording the
quantity of combustible mixture used for commercial or
industrial heating or for measuring and recording the
quantity of water supplied for commercial or domestic use.
[figure] [caption]A typical example of the subject matter.
Figure 1: A - Gas meter; B - Outlet gas supply; C - Control
valve; D - Regulator; E - Riser nipple; F - Relief valve.
[figure] [caption]Figure 2: A - Water meter; B - Backflow
prevention valve; C - Meter pit; D - Coaxial fitting; E -
Fluid conduit; F - Flow control valve; G - Fittings to
facilitate meter mounting.
SEE OR SEARCH THIS CLASS, SUBCLASS:
364-371, for a static ground supported valve or meter well.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, subclasses 97-99 for
repairing of a pipe or tubular conduit.
Subclass:
15.04
Fluid cleaning or flushing:
This subclass is indented under subclass 15.01. Subject
matter wherein the process of comprises injecting a
pressurized gas, liquid, or a mixture of flowable solid and
liquid through the system to eliminate or wash out the
material from the system.
(1) Note. The liquid may contain a solid particle. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Storage tank; B - Oil; C - Sludge (unwanted material); D -
Tank roof; E - Loading valve; F - Riser; G - Pump hose
(pressuirzed cleaning fluid); H - Bottom hose; J - Main
valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
238-245.5, for a fluid handling system with a cleaning or
steam sterilizing means.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclass 246.5
for a brushing, scrubbing, or general cleaning implement,
device, or machine attached to a tank.
Subclass:
15.05
Liquid cleaning or flushing:
This subclass is indented under subclass 15.04. Subject
matter wherein the process of washing out or eliminating the
undesirable material from the system is accomplished by use
of a desirable material which is a fluid that is not in
gaseous form. [figure] [caption]Figure 1: A typical example
of the subject matter. Brake cylinder "A" is filled with
brake liquid "B". Inlet valve "C" is provided for
introduction of new brake liquid. The outlet valve "D" is for
removal of spent brake liquid due to purging.
SEE OR SEARCH CLASS:
134, Cleaning and Liquid Contact with Solids, subclass 22.12
for a process of cleaning the internal surface of a pipe,
tubing, hose, or conduit with pressurized fluid or fluid
manipulation, or subclass 40 for a process of removing oil,
grease, tar, or wax by dissolving.
Subclass:
15.06
Valve or valve seat cleaning:
This subclass is indented under subclass 15.05. Subject
matter wherein the flushing liquid is being passed through
the body of a flow regulating device or around the circular
ring or annular sealing surface used for resting or
supporting the head of the device. [figure] [caption]Figure
1: A typical example of the subject matter. A - Seat
assembly; B - Valve seat; C - Replaceable gasket; D -
Represents washing fluid being flushed; E, F - Path of
washing fluid through slots of gasket.
SEE OR SEARCH THIS CLASS, SUBCLASS:
246-246.23, for a fluid handling system with liquid supplied
at a valve interface for sealing.
Subclass:
15.07
Mechanical cleaning (e.g., pig, etc.):
This subclass is indented under subclass 15.01. Subject
matter comprising an internally movable element consisting of
a brush, scraper, inflatable ring, or similar means used for
removing undesirable material from the system.
(1) Note. The pig is an in-line scraper, brush, blade,
cutter, or swab forced through a pipeline by fluid pressure
to remove undesirable material. [figure] [caption]Figure 1: A
typical example of the subject matter. A - Cleaning tool to
clean "B" of "B1"; B - Axial bore; B1 - Manifold body; C -
Manifold flange; D - Manifold opening for "E"; E - Mounting
bolt; F, G, H, J, K, L - Cleaning tool assembly; M - Cleaning
member with sharp edge.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, or General Cleaning, subclasses
3.5-3.52 for a machine with means to pass a solid cleaning
agent and a fluid carrier through tubular work or subclasses
104.03-104.33 for a pipe, tube, or conduit cleaning
implement, especially subclasses 104.05-104.33 for an
implement to clean inside a pipe, tube, or conduit.
138, Pipes and Tubular Products, subclass 93 for a pipe or
conduit with an inflatable closure or plug.
Subclass:
15.08
Repairing, securing, replacing, or servicing pipe, joint,
valve, or tank:
This subclass is indented under subclass 15.01. Subject
matter wherein the process is directed to a tubular product,
coupling, a flow regulating device, or a container or
receptacle. [figure] [caption]Figures 1and 2: A typical
example of the subject matter. A - Supply main; B - Pipe
saddle; C - Pipe conduit; D - Coupling; E - Flange adaptor; F
- Coupled assembly; G - Standard tool; H - Control valve.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, subclasses 97-99 for
repairing of a pipe or tubular conduit.
251, Valves and Valve Actuation, subclass 152 for a
correlated flow line having a pipe coupling or union where a
valve seat and coupling element is removable as a unit.
285, Pipe Joints or Couplings, subclasses 18-40 for a pipe
joint or coupling with assembly means or feature.
Subclass:
15.09
Including joint or coupling:
This subclass is indented under subclass 15.08. Subject
matter wherein the significance is attributed to a union
formed by two abutting pipes or ducts, an area at which two
ends or edges of the pipe or duct are attached, or a device
that serves to connect the ends of adjacent parts of a pipe
or duct. [figure] [caption]A typical example of the subject
matter. Figure 1: COUPLING: A, B - Flanges; C - Gasket; D -
Band; E, F - Welds; G - Seat; H, J - Sealing nuts; K - Bolt.
[figure] [caption]Figure 2: PIPE JOINT: A - Pipe Joint; B, C
- Pipe; D - Internal shelf; E - Connector; F - Fitting.
SEE OR SEARCH CLASS:
29, Metal Working, subclasses 509-513 for a method of
assembling by deforming a part over an edge of a seated part
or subclasses 525.01-525.15 for assembling or joining by
applying separate fastener.
285, Pipe Joints or Couplings, subclasses 15-17 having
repairing means, subclasses 18-40 with or having means to
assemble or disassemble, or subclasses 363-368 for a flanged
pipe joint having a packing.
403, Joints and Connections, subclasses 11-22 for a
protector or broken part retainer with repair, assembly, or
disassembly feature.
405, Hydraulics and Earth Engineering, subclasses 169-170
for assembling a line of pipe or cable in or from a marine
environment.
Subclass:
15.1
This subclass is indented under the class definition.
Apparatus comprising intake means described for use in an
ambient gaseous medium to gather a portion of that medium,
said incoming medium moving at a relatively high speed with
respect to the intake means, said intake means comprising a
flow passage for the incoming medium, said flow passage
disclosed as having at least (1), a portion which converges
in the direction of flow or (2), a portion which diverges in
the direction of flow or (3), an enlarged portion downstream
of the intake end.
(1) Note. Many of the patents herein disclose the intake
means as being used to convert a portion of the kinetic
energy of the incoming gas into static pressure energy.
(2) Note. A claim to merely recite the wall structure of a
tubular member, or to a mere tubular member with a
restricting or baffle means for facilitating or restricting
flow of fluid is classifiable in Class 138, Pipes and Tubular
Conduits. For classification in Class 137, some additional
fluid handling features must be claimed. See the reference
to Class 137 under "SEARCH CLASS" in the definition of
subclass 37 in Class 138.
(3) Note. A claim with a nominal recitation of the
apparatus to which the incoming gaseous medium is being
delivered, (e.g., jet engine, pump), in combination with the
intake means, does not preclude classification in Class 137.
Subclass:
15.11
Detecting or repairing leak:
This subclass is indented under subclass 15.08. Subject
matter wherein the significance is attributed to discovering
or determining presence or existence of a crack, crevice, or
hole that usually by wear and tear or mishap allows gas or
liquid to escape, and restoring to a sound condition by
patching, applying, or injecting a liquid, semi-liquid, or
semi-solid material to prevent gas or liquid entry to or loss
from a pipe, duct, container, or valving system. [figure]
[caption]A typical example of the subject matter. Figure 1:
INJECTING SEALANT: A - Leak repair clamp; B - Pipe line; C -
Cavity for receiving sealant; D - Passageway for sealant
injection; E - Stopper plug. [figure] [caption]Figure 2:
FLEXIBLE PATCH: A - Sealing leak; B - Pipe; C - Sealing
patch.
SEE OR SEARCH THIS CLASS, SUBCLASS:
312-314, for leakage or drip collecting.
SEE OR SEARCH CLASS:
29, Metal Working, subclasses 402.09-402.17 for a method of
repairing by attaching a repair preform (e.g., remaking,
restoring, patching, etc.).
73, Measuring and Testing, subclasses 40-49.3 using fluid
pressure to test or determine a leak.
228, Metal Fusion Bonding, subclass 119 for a process of
repairing, restoring, or renewing a product for reuse.
285, Pipe Joints and Couplings, subclasses 13-14 for
leakage or drip disposal including weep holes.
Subclass:
15.12
Tapping pipe, keg, or tank:
This subclass is indented under subclass 15.08. Subject
matter wherein the significance is attributed to piercing an
aperture or removing a plug from a tubular product, a small
cask or barrel, or a container or receptacle used for
transporting, holding, or storing a gas or liquid. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Concrete tube or pipe; B - Tensioned wires; C - Cement
coating; D - Sealing gland; E - Shell cutter; F - Film
(auxiliary coating); G - Saddle; H - Straps; J - Saddle neck;
K - Gasket; L - Tightening bolts; M - Grout; N - Valve
casing; P - Valve; Q - Adapter for tapping machine; R -
Tapping machine; S - Conduit for fluid under pressure; T -
Cutting machine shaft; V - Centering drill.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317-325, for an apparatus for tapping a pipe, keg or
apertured tank under pressure.
SEE OR SEARCH CLASS:
29, Metal Working, subclasses 522.1-524.1 for a method of
assembly or joining by deforming a radially expanding part in
a cavity, aperture, or hollow body or subclasses
890.14-890.15 for a method of making a specific gas or water
plumbing component.
138, Pipes and Tubular Products, subclasses 94-94.5 for a
laterally insertable closure or plug.
Subclass:
15.13
Particular aperture forming means:
This subclass is indented under subclass 15.12. Subject
matter wherein the significance is attributed to creating a
hole, gap, indentation, or a narrow, deep opening. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Nipple (outer end); B - Exterior threads; C - Enlarged
outer end portion; D - Perforating tool; E - Exterior taper;
F Main pipe; G - Allen wrench; H - Passageway; J - Valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
318 for an apparatus for tapping a pipe, keg, or apertured
tank under pressure with aperture forming means.
SEE OR SEARCH CLASS:
83, Cutting, subclass 54 for a process of cutting the wall
of a hollow work in general.
408, Cutting by Use of Rotating Axially Moving Tool,
subclasses 22-30 combined with diverse cutting means,
subclass 704 for drilling small holes, or subclass 705 for
drilling deep holes.
Subclass:
15.14
Cutter or cutting tool:
This subclass is indented under subclass 15.13. Subject
matter comprising a shearing device to remove a portion of
the pipe or keg to provide an aperture. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Cutter assembly; B - Piston; C - Recess; D - Bushing; E -
Resilient ring; F - Cutter; G - Tubular insert; H - Annular
ring; J - Pipe wall; K - Cut portion (coupon); L - Allen
wrench; M - Piston movement.
SEE OR SEARCH CLASS:
83, Cutting, subclass 30 for a process of puncturing or
subclass 54 for a process of cutting a wall of hollow work.
222, Dispensing, subclasses 81-90 for a cutter or punch to
form a dispensing opening in a container.
228, Metal Fusion Bonding, subclass 171 for a process of
producing opposed complementary matching bonding surfaces by
cutting prior to bonding.
408, Cutting by Use of Rotating Axially Moving Tool,
subclasses 87-102 for a cutting tool in combination with a
tool-opposing, work-engaging surface.
Subclass:
15.15
Having deformable or inflatable means:
This subclass is indented under subclass 15.13. Subject
matter wherein the method of forming an aperture further
includes sealing by use of an abnormally expandable bladder,
compressible stopper, or similar resilient member. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Pipe main; B - Resilient plug (inflatable); C - Inner rod;
D - Saddle; E - Opening in pipe; F - Pipe plug; G - Stopper
rod; H - Intermediate rod; J - U-bolt; K - Service tree.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, subclasses 89.1-89.2 for
an inflation stem type air and dust cap, subclass 89.3 for an
inflation stem type air cap, subclass 89.4 for an inflation
stem type dust cap, subclass 93 for an inflatable closure or
plug, subclasses 94-94.5 for a laterally insertable closure
or plug, or subclasses 97-99 for repairing a pipe or tubular
conduit.
Subclass:
15.16
With content loading or unloading (e.g., dispensing,
discharge assistant, etc.):
This subclass is indented under subclass 15.08. Subject
matter comprising a method of filling the pipeline or tank
with a substance or material or removing a substance or
material from a pipeline or tank. [figure] [caption]Figure 1:
A typical example of the subject matter. A - Vessel; B -
Viscous material; C - Gear pump; D - Drain opening; E - Boss;
F - Valve body; G - Flange connection; H - Side outlet; J -
Piston; K - Actuator; L - Hose; M - Container; N - Solenoid
valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
587-588, for a fluid handling system having a tank that
includes a gas vent and a liquid inlet or outlet.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, subclasses 2-3 for a process of filling a
dispenser or subclasses 5-7 for a process of manipulating gas
within the receiver and filling with fluent nongaseous
materials, especially subclass 7 for a process of evacuation
of a container.
222, Dispensing, subclasses 321.1-321.9 with discharge
assistant (e.g., impeller, pump, conveyer, movable trap
chamber, etc.), a movable nozzle interconnected with it and a
material supply container and discharge assistant casing.
Subclass:
15.17
Specific valve or valve element mounting or repairing:
This subclass is indented under subclass 15.08. Subject
matter wherein the significance is attributed to the process
of installing, replacing, or servicing a flow regulating
device or its component. [figure] [caption]Figure 1: A
typical example of the subject matter. A - Valve assembly; B
- Interior wall; C - Distribution pipe; D - Tank; E - Tank
inlet; F - Main valve; G - Water inlet line; H - Flexible
tube; J - Fittings.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.18-15.26, for a process of assembling, disassembling, or
repairing a valve or valve member.
SEE OR SEARCH CLASS:
29, Metal Working, subclasses 213.1-221.6 for assembly or
disassembly means for applying or removing a valve, subclass
890.121 for a method of repairing, converting, servicing, or
salvaging a valve or choke, or subclasses 890.124-890.131 for
a method of assembly, disassembly, or composite valve or
choke making.
Subclass:
15.18
Valve or valve element assembling, disassembling, or
repairing:
This subclass is indented under subclass 15.01. Subject
matter wherein the significance is attributed to the process
of installing, replacing, or securing a flow regulating
device or its component. [figure] [caption]Figure 1: A
typical example of the subject matter. A - Valve body; B -
Inlet port; C - Outlet port; D - Flanges; E - Valve chamber;
F - Seat sections; G - Valve body portion; H - Hanger
surface; J - Hanger recess; K - Clapper; L - Annular ring; M-
Spherical segment; N - Annular recess; P - Clapper pin; Q -
Bushing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.17 for a process having a particular repairing or
mounting feature for the valve or valve member.
329.01-329.06, for repair by means where a valve head or seat
is replaceable or having an unworn surface movable into
operative position.
SEE OR SEARCH CLASS:
29, Metal Working, subclasses 213.1-221.6 for assembly or
disassembly means for applying or removing a valve, subclass
890.121 for a method of repairing, converting, servicing, or
salvaging a valve or choke, or subclasses 890.124-890.131 for
a method of assembly, disassembly, or composite valve or
choke making.
Subclass:
15.19
Fluid actuated or retarded:
This subclass is indented under subclass 15.18. Subject
matter wherein the significance is attributed to the opening
or closing movement of the valve and is produced by the
relative force of a gas, liquid, or a mixture of a solid and
liquid. [figure] [caption]Figure 1: A typical example of the
subject matter. A - Control valve; B - Valve stem; C, D, E, F
- Lever and link mechanism; G - Piston; H - Servomechanism; J
- Actuator; K - Manifold to control actuator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
601.13 for systems dividing into parallel flow lines then
recombining having a fluid actuated or retarded valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 12-63.6 for a
fluid actuated or retarded valve actuating means or subclass
175 for means to increase head and seat contact by fluid
pressure.
Subclass:
15.2
This subclass is indented under subclass 15.1. Apparatus
having means sensing a condition of the ambient medium, or of
the medium flowing through the intake means, said sensing
means controlling operation of a control means for the medium
flowing through the intake means, or for a separate fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
601.13 for systems dividing into parallel flow lines then
recombining having a fluid actuated or retarded valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 12-63.6 for a
fluid actuated or retarded valve actuating means or subclass
175 for means to increase head and seat contact by fluid
pressure.
Subclass:
15.21
Multi way valve:
This subclass is indented under subclass 15.18. Subject
matter wherein the valve regulates or controls a plurality of
flow lines. [figure] [caption]Figure 1: A typical example of
the subject matter. A - Valve body; B - Valve cage; C - Valve
plug; D - Valve stem; E - Bonnet; F, G - Valve ports; H -
Central boss; J - Valve body bridge; K, L - Side ports; M -
Bottom port.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.09 for a fluid handling system with means for assembling
or disassembling a multi way valve device.
625-625.5, for a multi way valve unit.
Subclass:
15.22
Ball valve or rotary ball valve:
This subclass is indented under subclass 15.18. Subject
matter wherein the significance is attributed to a valve
comprising a recriprocating spherical element, a pivoting
spherical element, or a housing having a flow passage
therethrough with a valve seat, and a spherical head that
contacts the seat and can be rotated about an axis passing
generally through its geometrical center by actuating means.
[figure] [caption]Figure 1: A typical example of the subject
matter. A - Valve seat; B - Upper valve seat; C - Lower valve
seat; D - Packings; E, F - Retainers; G, H -Bearing packings;
J - Valve box; K - Valve rod; L - Packing gland; M - Gland
screw; N - Ball handle; P - Cap nut; Q - Lock nut; R, S, T -
Fluid passages.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.18-315.21, for a rotary ball valve with assembling or
disassembling.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 315.1-315.15
for housing construction for a ball valve.
Subclass:
15.23
Gate valve:
This subclass is indented under subclass 15.18. Subject
matter wherein the significance is attributed to a valve
comprising essentially a wedge-shaped or flat sliding plate
that can be lowered into a seat or raised to regulate fluid
flow. [figure] [caption]Figure 1: A typical example of the
subject matter. A - Gate valve; B - Valve body; C -
Passageway; D -Valve gate; E - Valve seats; F - Valve stem; G
- Valve yoke; H - Valve handle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.29-315.32, for a reciprocating gate valve with assembling
or disassembling means.
625.45 for system shaving a multi way valve unit that uses a
pivoted gate valve unit.
625.49 for systems having a multi way valve unit that uses a
reciprocating combined disk or plug for closing one port and
a gate or piston valve for closing another port.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 300 for a pivoted
terminal gate valve, subclasses 301-302 for a pivoted gate
valve, or subclasses 326-329 for a reciprocating gate valve.
Subclass:
15.24
Plug valve:
This subclass is indented under subclass 15.18. Subject
matter wherein the significance is attributed to a valve
comprising a cock with a conical or cylindrical piece which
is being turned to regulate the flow. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Valve assembly; B, C - Inlet and outlet in axial alignment
with each other; D - Cylindrical plug assembly with valve
assembly "A"; E - Upper actuating portion of plug "D"; F -
Lower actuating portion of plug "D"; G, H - Sealing grooves
for plug "D"; J - Plug valve handle; K - Valve support
surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.25-315.26, for a plug valve with means to assemble or
disassemble.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 309-312 for a
rotary plug valve or subclass 904 for a snap-fit plug valve.
Subclass:
15.25
Butterfly valve:
This subclass is indented under subclass 15.18. Subject
matter wherein significance is attributed to a valve
comprising a substantially flat and coplaner wings depending
from a central axis of rotation. [figure] [caption]Figure 1:
A typical example of the subject matter. A - Throttle valve
shaft; B - Cylindrical bosses; C - Throttle valve disk; D -
Spring retainer and lever; E - Holes to receive bosses "B".
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.22-315.24, for a butterfly valve with assembly or
disassembly means.
601.17 for systems dividing into parallel flow lines then
recombining including a butterfly valve.
SEE OR SEARCH CLASS:
29, Metal Working, subclasses 890.124-890.131 for valve
making in general with assembly, disassembly, or composite
article making.
454, Ventilation, subclasses 333-336 for an adjustable
damper type valve; subclass 369 for a fire damper in
general.
Subclass:
15.26
Float valve:
This subclass is indented under subclass 15.18. Subject
matter wherein the significance is attributed to a valve
comprising a hollow, buoyant element, usually attached at the
end of a lever, providing positive buoyancy while resting on
the fluid surface. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Tank; B - Water level; C -
Standpipe; D - Ballcock valve; E - Lever arm; F - Float; G -
Port; H - Fill tube. Note: Valve "D" operates such that
downward articulation of lever arm "E" causes valve "D" to
open so that water can communicate between port "G" and the
fill tube "H".
SEE OR SEARCH THIS CLASS, SUBCLASS:
165-168, for a float responsive to liquid in a trap (e.g.,
boiler, etc.) to control gas pressure within the trap.
315.08 for a fluid handling system combined with means to
assemble or disassemble a float or float valve.
409-451, for a liquid level responsive or maintaining system
by a float controlled valve.
SEE OR SEARCH CLASS:
73, Measuring and Testing, subclass 322.5 for a float
structure.
119, Animal Husbandry, subclasses 78-80 for a watering or
liquid feed device with a float-controlled supply.
340, Communications: Electrical, subclasses 623-625 for a
liquid level responsive indicating system using a float
sensor.
Subclass:
38
This subclass is indented under the class definition.
Apparatus wherein a flow of fluid is controlled in response
to (1) the shifting of the position of the system as a whole
relative to gravitational field or to a body of liquid in
which the system exists or (2) the inertia or dislocation of
the system as a whole.
(1) Note. Systems which are controlled by overflow pipes or
arrangements are excluded from this and indented subclasses
and are classified on a basis appropriate to the system
claimed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
53 for systems wherein the control is in response to the
inertia or position of a speed responsive element (e.g., fly
ball governors).
581 for distribution systems comprising a movable tank.
SEE OR SEARCH CLASS:
184, Lubrication, subclass 26 for lubricating pumps operated
by the vibration of a machine.
220, Receptacles, 203.19 for a receptacle closure comprising
a pressure responsive vent or valve which is also responsive
to tilting of the receptacle.
222, Dispensing, 160 for movably mounted supply containers
for dispensers; subclasses 454+ for dispensers which have a
trap which is filled and emptied solely by the tilting motion
of the assembly, and subclasses 500+ for dispensers having
gravity or inertia operated outlet elements.
364, Electrical Computers and Data Processing Systems,
subclass 528.16 for control of fluid level or volume, and
subclasses 528.17+ for flow control.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
417, Pumps, 231 for pumps operated by a vehicle.
Subclass:
39
This subclass is indented under subclass 38. Apparatus which
includes, in addition to the control responsive to the
position or inertia of the system as a whole, a second means
for operating the control means.
(1) Note. The second control may be manual or operated in
response to some other condition, such as pressure,
temperature, etc.
(2) Note. This subclass also provides for systems including
means to neutralize or overcome the effect of a change of
position on a second flow control.
(3) Note. See the class definition, section 3, for search
notes on combined automatic and manual control of fluid
handling systems.
Subclass:
40
This subclass is indented under subclass 38. Apparatus
wherein the flow is controlled in response to the position of
the system as a whole relative to a body of water in which
the system is located.
(1) Note. To be classifiable in this or indented subclass
the apparatus must include some means for sensing the
position of the system relative to the body of water.
(2) Note. Marine governors operated in response to the
shifting of the position of the system relative to gravity
(due to ocean wave motion for example) but which do not
include means for sensing the position of the system relative
the water are found in other subclasses of this group.
SEE OR SEARCH THIS CLASS, SUBCLASS:
146 for the plunge or immersion starting of siphons.
SEE OR SEARCH CLASS:
440, Marine Propulsion, subclass 74 for marine propulsion
screw type propellers combined with propeller brakes to
prevent racing of the propeller.
Subclass:
41
This subclass is indented under subclass 40. Apparatus which
includes a float means for sensing the position of the system
relative the body of water in which the system exists.
SEE OR SEARCH THIS CLASS, SUBCLASS:
386 and Notes thereto for other float controlled apparatus.
Subclass:
42
This subclass is indented under subclass 40. Apparatus which
includes means to sense the pressure or head of the body of
water in which the system exists.
SEE OR SEARCH THIS CLASS, SUBCLASS:
403 for liquid level responsive or maintaining systems in
which the level is determined by head or pressure.
Subclass:
43
This subclass is indented under subclass 38. Apparatus
including means to close or open a vent opening on a
container when the position of the container is varied, e.g.,
when the container is tipped.
SEE OR SEARCH THIS CLASS, SUBCLASS:
583 for distribution systems having plural flow passages,
one of which is a gas vent, and see the search notes to
subclass 583.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 500 for gravity or inertia
actuated outlet elements for dispensers.
429, Chemistry: Electrical Current Producing Apparatus,
Product, and Process, 84 for vents combined with battery
structure and battery vents, per se, of the nonspill type.
Subclass:
44
This subclass is indented under subclass 38. Apparatus
wherein the control is effected by a change in a level of a
liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
40 where the control is in response to a change or shift in
the level of a body of water in which the system is located
relative to the system.
45 for similar devices in which a liquid is employed as a
shifting weight in combination with a pendulum or swinging
member.
386 for liquid level responsive systems which are not
inertia controlled.
Subclass:
45
This subclass is indented under subclass 38. Apparatus
wherein the flow is controlled by means of a pendulum or
other pivoted member swinging about its pivot in response to
a change of position of the system or to the inertia of the
system.
SEE OR SEARCH CLASS:
33, Geometrical Instruments, 391 for pendulum type levels or
plumbs.
Subclass:
46
This subclass is indented under subclass 45. Apparatus in
which the pendulum or pivoted member controls the application
of another source of power for operating the control instead
of by acting directly through a mechanical connection.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 25 for fluid servo or pilot
operated valves, and see the search notes to subclass 25.
Subclass:
47
This subclass is indented under the class definition.
Systems including the combination of a valve or valves and an
actuator therefor, the actuator including a driven means
which changes its position or produces a regulating pressure
which varies in accordance with the speed at which it is
driven.
(1) Note. The driven means may comprise one or more
governors.
SEE OR SEARCH CLASS:
73, Measuring and Testing, 488 for a speed responsive
device, per se.
116, Signals and Indicators, 37 and 57 for vehicle speed
responsive indicators and subclasses 200+ for speed limit
indicators.
364, Electrical Computers and Data Processing Systems, 528.17
for flow control including valve or pump control, and
subclasses 528.36 and 528.39 for pressure and speed contro,
respectively.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
Subclass:
48
This subclass is indented under subclass 47. Control systems
wherein the driven means changes its position in accordance
with the rate of change of speed at which it is driven.
Subclass:
49
This subclass is indented under subclass 47. Control systems
including additional means whereby the valve or valves may be
manually operated.
(1) Note. Manually operated means to modify the response
setting of the speed responsive means or to reset the trip
latch, are not deemed to constitute a manual control within
the definition of this subclass. However, if the manual
reset means also actuates the valve or valves, the device
would be considered as being manually operated for
classification herein. See the class definition, section 3,
for search notes on combined automatic and manual control
means for fluid handling systems, and Section 5, for a
listing of manual control, resetting and adjusting devices in
this class.
(2) Note. The term "manual" as used herein includes both
hand and foot actuated means.
(3) Note. This subclass includes manual valve actuating
means in which a speed responsive device become effective at
a predetermined speed of the engine or vehicle, either (1) to
disconnect the mechanical movement of the manual actuator,
and in some instances also to operate a trip mechanism to
permit a biasing means to close the valve, or (2) to act as a
limit stop to prevent further valve opening by the manual
actuator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
57 for excess speed responsive control, and see the search
notes thereto.
SEE OR SEARCH CLASS:
73, Measuring and Testing, subclass 513 for a speed
responsive device combined with manual control.
Subclass:
50
This subclass is indented under subclass 47. Control systems
wherein the driven means is operable to vary the extent of
opening of the valve or valves in response to changes in
speed and to effect closing of the valve or valves in
response to a speed above a predetermined speed.
(1) Note. The driven means may comprise one or more
governors which may control a single valve or a plurality of
valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
57 for excess speed responsive valve control of the
centrifugal mass type, and see the search notes thereto.
Subclass:
51
This subclass is indented under subclass 47. Control systems
including additional means responsive to another operating
condition which may actuate the same valve which is actuated
by the speed responsive means, or another valve.
SEE OR SEARCH CLASS:
73, Measuring and Testing, subclass 509 for a speed
responsive device that is also responsive to a nonspeed
condition.
Subclass:
52
This subclass is indented under subclass 51. Control systems
wherein the additional condition responsive means comprises a
control device responsive to the breaking or failure of the
driving means for the speed responsive governor to effect
closing or substantial closing of a valve.
(1) Note. The valve which is closed or substantially closed
on failure of the driving means may be the valve controlled
by the speed responsive governor or another valve.
SEE OR SEARCH CLASS:
73, Measuring and Testing, subclass 508 for a governor
having drive failure responsive means.
251, Valves and Valve Actuation, subclass 27 for fluid
pressure servo operated valves having means to close the
valve on failure of the servo means, and subclass 69 for
biased trip valves having the trip actuated on failure of the
electric power.
Subclass:
53
This subclass is indented under subclass 47. Control systems
wherein the speed responsive means comprises a rotating or
revolving weight or weights, the position assumed by such
weight or weights due to centrifugal force varying as a
function of the speed at which they are rotated or revolved.
SEE OR SEARCH CLASS:
73, Measuring and Testing, 535 for a centrifugal type speed
responsive device, per se.
Subclass:
54
This subclass is indented under subclass 53. Control systems
wherein two or more valves are provided, at least one of said
valves being actuated by the speed responsive means.
(1) Note. See the class definition, section 3, for search
notes on plural automatic valves in this and related
classes.
Subclass:
55
This subclass is indented under subclass 53. Control systems
wherein the valves or valve are periodically and continually
opened and closed, the governor being effective to vary the
period and/or the extent of opening.
(1) Note. The valves are usually disclosed for use in a
reciprocating type of expansible chamber motor, the valves
being periodically actuated for admitting motive fluid to the
power cylinder and the governor varies the quantity of motive
fluid in accordance with the motor speed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
631 for nonautomatic cyclically operated valves, and see the
search notes to subclass 631.
Subclass:
56
This subclass is indented under subclass 53. Control systems
wherein the speed responsive means and the valve or valves
are combined to comprise a continuously rotating
construction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
55 for valves connected with a speed responsive governor to
rotate therewith in order to periodically open and close the
valve, the governor producing an axial motion of the valve to
control the period and/or extent of valve openings.
Subclass:
57
This subclass is indented under subclass 53. Control systems
wherein the speed responsive means is effective to actuate
the valve or valves only at speeds above a predetermined
speed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
50 for speed change and excess speed valve control.
456 for safety cut-offs of general utility which respond to
line condition and require resetting.
SEE OR SEARCH CLASS:
116, Signals and Indicators, subclass 57 and 62.1+ for
vehicle speed limit indicators and alarms.
Subclass:
58
This subclass is indented under subclass 53. Control systems
wherein the speed responsive means transmits its regulating
motion to the valve or valves by means of a fluid type
servo-motor mechanism.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, subclass 366 and 458
for speed governor operated expansible chamber motors.
251, Valves and Valve Actuation, 25 for fluid pressure
actuated valves of the pilot or servo-motor type, and see the
search notes to subclass 25.
418, Rotary Expansible Chamber Devices, 40 for speed
controlled rotary expansible chamber devices.
Subclass:
59
This subclass is indented under the class definition.
Apparatus which includes means which senses the existence of
conditions which would cause the freezing of liquid within
the system and in response thereto exercises a control to
protect the liquid from freezing or to safeguard the system
as a whole from the effects of freezing of a part thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
72 for valves controlled by heat destructible or fusible
means.
79 for devices responsive to atmospheric temperature not
amounting to a freeze condition.
107 for apparatus wherein a waste valve opens in response to
the stopping of flow through the line, disclosed as
preventing freezing.
118.01 for branched flow systems responsive to temperature
of the system.
301 for hydrants with means to prevent freezing.
457 for safety cut-offs requiring reset and responsive to
thermal conditions in a fluid line.
468 for other valves controlled in response to thermal
conditions in a fluid line.
SEE OR SEARCH CLASS:
62, Refrigeration, 132 for condition sensing controls for a
refrigeration system, particularly subclasses 139+ for
control by accumulation on a freezing surface.
123, Internal-Combustion Engines, subclass 41.14, 41.15,
41.42, 41.5, and 142.5 for devices for protecting the cooling
systems of internal combustion engines against cold.
138, Pipes and Tubular Conduits, 27 for freeze protecting
pressure compensators, and subclasses 32+ for freeze
protection for pipes and tubular conduits.
236, Automatic Temperature and Humidity Regulation,
appropriate subclasses.
237, Heating Systems, subclass 80 for heating radiators
having means for preventing freezing.
Subclass:
60
This subclass is indented under subclass 59. Apparatus which
includes means to protect the liquid from freezing by
responding to the freezing of the liquid in a chamber.
(1) Note. The freeze chamber may be in the main flow line
or may be an auxiliary control chamber which is more exposed
to the low temperature.
SEE OR SEARCH THIS CLASS, SUBCLASS:
67 for frangible control elements not responsive to a freeze
condition.
Subclass:
61
This subclass is indented under subclass 59. Apparatus which
closes the system to liquid flow and opens a waste outlet so
that at least part of the liquid in the system is drained or
wasted in response to the sensing of low temperature or
freezing conditions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
107 for opening fluid waste passage in response to stopping
of the main flow.
596 for stop and waste devices not responsive to change in
condition, and see the search notes thereto.
Subclass:
62
This subclass is indented under subclass 59. Apparatus which
operates to open an outlet so that at least part of the
system is drained or emptied of liquid in response to the
sensing of low temperature or freezing conditions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
570 for drain valve actuator combined with a pump.
596 for distribution systems comprising a drain which is not
automatic, and see the search notes thereto.
Subclass:
65
This subclass is indented under the class definition.
Subject matter comprising a flow control device or safety
valve in the fuel supply to a burner which is automatically
actuated to discontinue the fuel flow in response to the
extinguishment of the main or pilot burner.
(1) Note. These devices are not self-opening, but must be
manually reset, usually requiring that the pilot burner be
lighted first.
SEE OR SEARCH THIS CLASS, SUBCLASS:
405 for cut-offs responsive to an accumulation of unburned
fuel oil delivered to a burner.
456 for safety cut-offs responsive to a change in line
condition, which also require resetting.
SEE OR SEARCH CLASS:
431, Combustion, 42 for a burner system in which the sensor
of a first burner controls a second burner and subclasses 77+
for a burner shutdown by a means sensing a failure of the
burner flame.
Subclass:
66
This subclass is indented under subclass 65. Control systems
wherein the safety valve is retained in its set or open
position under the action of a solenoid, which solenoid is
energized by the electric current generated by a
thermoelectric element, e.g., a thermocouple, subject to the
heat of the pilot burner or main burner.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 11 for heat motor
actuated valves of general utility, and subclasses 68+ for
electrical trip actuation of biased valves, including
electrical resetting.
431, Combustion, subclass 80 for a burner assembly including
a shutdown control responsive to combustion failure or
overheat having a thermoelectric combustion sensor.
Subclass:
67
DESTRUCTIBLE OR DEFORMABLE ELEMENT CONTROLLED:
This subclass is indented under the class definition.
Subject matter in which the flow of fluid is controlled in
response to the destruction, fusion or permanent deformation
of an element or body.
(1) Note. The destruction, fusion or deformation may result
automatically in response to the existence of some condition
causing destruction, fusion or deformation (e.g., heat), or
may be deliberately brought about by external means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
318 for tapping a system under pressure by making an
aperture therein.
SEE OR SEARCH CLASS:
166, Wells, 316 for closures used in wells and destructible
by drilling.
222, Dispensing, subclass 54 for automatic control of
dispensers by fusible or soluble means; subclasses 80+ for
dispensers having a cutter or punch associated therewith;
subclasses 541.1+ for dispensers having a frangible outlet
element.
251, Valves and Valve Actuation, subclass 1.2 for a blowout
preventer having a deformable annulus.
Subclass:
68.11
Destructible element:
This subclass is indented under subclass 67. Subject matter
in which the fluid flow control element is physically broken
by having a force acting directly upon it.
SEE OR SEARCH THIS CLASS, SUBCLASS:
797 for frangible elements, the breaking of which do not
control any flow of fluid.
SEE OR SEARCH CLASS:
222, Dispensing, 80 for dispensers having a cutter or punch
associated therewith.
Subclass:
68.12
Combined destructible and fusible element:
This subclass is indented under subclass 68.11. Subject
matter in which the element breaks and melts at a specific
temperature to control the fluid flow or has, in addition to
the destructible element, a separate element which melts at a
specific temperature to control the fluid flow.
Subclass:
68.13
Explosive actuation:
This subclass is indented under subclass 68.11. Subject
matter which includes means capable of detonation for
creating a force for breaking or deforming the destructible
element (e.g., an explosive element moves a plunger or
creates a pressure surge to break the element).
Subclass:
68.14
Separable valve coupling or conduit:
This subclass is indented under subclass 68.11. Subject
matter where the destructible element is a fluid-conveying
assembly such as a nipple, valve assembly, or hose that
disconnects at a specific joint when an excessive force is
applied to it.
Subclass:
68.15
Tensile or sheer pin or bolt:
This subclass is indented under subclass 68.14. Subject
matter where the destructible element is a pin or bolt that
holds the coupling together and destructs when a
perpendicular or axial excessive force is applied to the
coupling.
Subclass:
68.16
Tensile or sheer pin or bolt:
This subclass is indented under subclass 68.11. Subject
matter where the destructible element is a pin or bolt that
destructs when an excessive force is applied.
Subclass:
68.17
Pressure causes pin or bolt to destruct:
This subclass is indented under subclass 68.16. Subject
matter that destructs when the applied excessive force that
fractures the pin or bolt is applied over the surface of the
pin or bolt.
Subclass:
68.18
With alarm or indicator:
This subclass is indented under subclass 68.11. Subject
matter that includes a sensing means that sends a signal when
the element breaks.
Subclass:
68.19
Rupture disc:
This subclass is indented under subclass 68.11. Subject
matter where the destructible element is a diaphragm or seal
that holds fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
72 for a fluid-controlled fusible diaphragm.
SEE OR SEARCH CLASS:
220, Receptacles, 89.2 for a receptacle that is a frangible
diaphragm within a container or vessel.
Subclass:
68.21
Means for holding entire disc after rupture:
This subclass is indented under subclass 68.19. Subject
matter that has a specific means for preventing the rupture
disc from tearing away (e.g., hinge-reinforcing member).
Subclass:
68.22
Disc burst after destruction of additional element:
This subclass is indented under subclass 68.19. Subject
matter that includes a second frangible element in a system
which destructs before the rupture disc.
(1) Note. This subject matter would include a system with
two or more rupture discs in a flow passage.
Subclass:
68.23
Direct pressure causes disc to burst:
This subclass is indented under subclass 68.19. Subject
matter wherein the destructible element is destroyed by
excessive pressure exerted by the fluid flow.
Subclass:
68.24
Two-way rupture disc:
This subclass is indented under subclass 68.23. Subject
matter that is designed to break either in the direction of
or opposite the direction of the fluid flow when an excessive
pressure differential exists.
Subclass:
68.25
Dome shape:
This subclass is indented under subclass 68.23. Subject
matter that is specifically designed to be hemispherical to
enable the disc to more easily rupture as pressure builds.
Subclass:
68.26
Reverse buckling:
This subclass is indented under subclass 68.25. Subject
matter which has excessive pressure at the convex side of the
disc to cause the disc to reverse its concavity and burst.
Subclass:
68.27
Specific weakening point:
This subclass is indented under subclass 68.19. Subject
matter specially modified to have an area of varied thickness
creating a vulnerable section to enable the pressure disc to
more easily break.
Subclass:
68.28
Integral disc assembly:
This subclass is indented under subclass 68.19. Subject
matter including a support member welded or bonded with
adhesive to the rupture disc or the rupture disc is directly
bonded or welded to the assembly.
Subclass:
68.29
Knife or cutter causes disc to break:
This subclass is indented under subclass 68.19. Subject
matter penetrated by a piercing device to enable the disc to
more easily break when the internal pressure in the system
becomes excessive.
Subclass:
68.3
Movable knife or cutter:
This subclass is indented under subclass 68.29. Subject
matter wherein the piercing device is positionable.
Subclass:
69
With counterbalancing element:
This subclass is indented under subclass 68.12. Apparatus
which includes means for applying a force or bias to the
frangible means in a direction opposing the force (usually
fluid pressure) which tends to break the frangible element.
Subclass:
70
Frangible element returns pressure responsive valve:
This subclass is indented under subclass 68.12. Apparatus in
which a valve which opens in response to increased pressure
is retained in closed position by means of a frangible
element, opening of the valve resulting from the breaking of
the frangible element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
455 for line condition responsive valves not opposed by
frangible means.
Subclass:
71
Having pressure responsive valve:
This subclass is indented under subclass 68.12. Apparatus
including a pressure responsive valve controlling the fluid
flow in response to the pressure thereof in addition to the
control in response to the breaking of the frangible
element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
511 for direct pressure responsive valves.
SEE OR SEARCH CLASS:
220, Receptacles, subclass 203.08 for a vent or valve in a
removeable closure, said vent or valve designed to rupture
when exposed to excessive pressure.
Subclass:
72
This subclass is indented under subclass 67. Apparatus in
which the flow is controlled in response to an element which
is fusible or destructible by heat (e.g., combustible).
SEE OR SEARCH THIS CLASS, SUBCLASS:
79 for atmospheric temperature responsive flow control.
457 for safety cut-off valves controlled by a thermal
condition of the line.
468 for other valves controlled by a thermal condition of a
fluid line.
SEE OR SEARCH CLASS:
116, Signals and Indicators, 217 for indicators of the
fusible type.
122, Liquid Heaters and Vaporizers, subclass 504.1 for
safety device for a boiler with fusible control and subclass
504.3 for a fusible type safety device extinguishing a fire
under a boiler.
222, Dispensing, subclass 54 for dispensers having a fusible
controller.
431, Combustion, subclass 21 for a burner assembly
controlled by a combustion destructible element.
Subclass:
73
This subclass is indented under subclass 72. Apparatus which
includes a means for controlling the fluid flow in response
to a change in condition in addition to the control in
response to the fusion or destruction of the heat
destructible element.
(1) Note. See the class definition, section 3 for search
notes on plural automatic controls in fluid handling
devices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
75 for safety cut-offs operated by fusible means but without
responding to a second sensing means.
Subclass:
74
This subclass is indented under subclass 72. Apparatus in
which the fusible or heat destructible element is in the
passage carrying the flow controlled and functions as a
barrier or stop member for such flow.
(1) Note. The fusion of the fusible element may result in
either the opening or closing of the passage carrying the
fluid flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
251 for liquid valves or barriers.
Subclass:
75
This subclass is indented under subclass 72. Apparatus in
which the valve controlling the fluid flow is biased toward a
closed position but is held open by a restraining means, the
fusion or destruction of the heat destructible or fusible
means causing a release of the restraining means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
457 for other cut-offs which are operated in response to a
change in thermal condition in the fluid within the
controlled line.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 66 for biased trip valve
actuators not responsive to a condition change.
Subclass:
76
This subclass is indented under subclass 75. Apparatus which
includes a heating means for the fusible or heat destructible
element.
(1) Note. The heating element is usually for the purpose of
fusing or otherwise destroying the destructible element to
control the operation of the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
468 for line condition responsive valves controlled by
thermal conditions, and see the search notes thereto.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 11 for heat motor
actuators for valves.
Subclass:
77
This subclass is indented under subclass 75. Apparatus
including a means for closing the valve by manual or external
means in addition to the operation in response to the fusible
or heat destructible element.
(1) Note. See the class definition, Automatic Control, and
Subclass References to the Current Class for search notes on
combined automatic and nonautomatic control of a fluid
handling device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
76 for manual or external closing by heating the fusible or
heat destructible element.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 66 for biased trip valve
actuators not responsive to a condition change.
Subclass:
78.1
AMBIENT CONDITION CHANGE RESPONSIVE:
This subclass is indented under the class definition.
Apparatus which controls a flow of a fluid in response to a
variation in a condition of, or in the surrounding
environment.
(1) Note. To be classifiable in this or indented subclasses
the apparatus must include a sensing means responsive to
changes in environmental conditions and there must be a
disclosure that the control is in response to such changes.
Devices which employ a sensing means using environmental
pressure merely as a standard against which some internal
pressure or condition is measured are not classified in this
or indented subclass but are classified elsewhere on a basis
appropriate to the system.
(2) Note. This and indented subclasses include devices
which include means for sensing changes in an environmental
condition and exercising a compensating effect so as to
neutralize any effect the change in environmental condition
would otherwise have on the operation of the device.
(3) Note. See the class definition, section 3, for search
notes on the automatic control of fluid handling systems.
SEE OR SEARCH THIS CLASS, SUBCLASS:
59 for device which sense the existence of freeze condition
in the atmosphere and in response thereto operate to prevent
freezing of liquid in the system.
Subclass:
78.2
For controlling soil irrigation:
This subclass is indented under subclass 78.1. Apparatus in
which flow of water to the ground is controlled by means
responsive to an environmental condition.
Subclass:
78.3
Coil moisture sensing:
This subclass is indented under subclass 78.2. Apparatus in
which flow of water to the ground is controlled in response
to a change in moisture content of the ground.
Subclass:
78.4
Burner gas cutoff:
This subclass is indented under subclass 78.1. Apparatus in
which flow of flammable gas to a burner is stopped in
response to a sensed environmental extinguishing action to
the flame of the burner.
Subclass:
78.5
Atmospheric:
This subclass is indented under subclass 78.1. Apparatus in
which control of a flow of fluid is responsive to a variation
in a condition of, or in surrounding atmosphere.
Subclass:
79
This subclass is indented under subclass 78.5. Apparatus
which controls a fluid flow in response to variations of
temperature in the surrounding atmosphere.
(1) Note. This subclass includes apparatus which sense the
presence of a fire in the atmosphere and exercise a control
in response thereto.
SEE OR SEARCH THIS CLASS, SUBCLASS:
59 for freeze condition responsive safety devices.
67 for systems controlled by a heat destructible or fusible
means.
468 for thermally responsive valves responding to line
condition change, and see the search notes thereto.
SEE OR SEARCH CLASS:
169, Fire Extinguishers, 56 for fire extinguishers including
valves responsive to the occurrence of fire conditions.
Subclass:
80
This subclass is indented under subclass 79. Apparatus which
also includes, in addition to the atmosphere temperature
responsive element, an additional means for operating the
control means.
(1) Note. See the class definition, Section 3 for search
notes on automatic and combined automatic and nonautomatic
control of fluid handling systems.
Subclass:
81.1
Pressure:
This subclass is indented under subclass 78.5. Apparatus in
which a fluid flow is controlled in response to variations of
atmospheric pressure.
(1) Note. See (1) Note and (2) Note to the definition of
subclass 78.1.
SEE OR SEARCH THIS CLASS, SUBCLASS:
455 for valves controlled by changes in line pressure,
especially subclass 482 for suction compensators for
combustion engine induction type line conduction change
responsive valves.
SEE OR SEARCH CLASS:
454, Ventilation, 70, 238, 255, and 340 for apparatus for
maintaining a pressure in enclosure including means
responsive to air conditions either in the atmosphere or in
the enclosure.
Subclass:
81.2
Underwater:
This subclass is indented under subclass 78.1. Apparatus in
which control of a flow of fluid is responsive to a variation
in a condition of, or in an environment beneath the surface
of a body of water.
Subclass:
82
This subclass is indented under the class definition.
Apparatus which continuously varies or modulates a fluid in
response to a varying control condition. The modulation is
usually accompanied by varying a pressure bleed.
(1) Note. Only the subcombination, without a pressure
responsive device, and a main valve controlled thereby is
classified in this subclass; for the combination search
appropriate succeeding subclasses, as indicated below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
102 for pressure regulators which regulate by supply and
exhaust valves to maintain a pre-set pressure.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, appropriate subclasses
for apparatus under this definition combined with the
expansible chamber motor which is operated by the fluid
pressure.
236, Automatic Temperature and Humidity Regulation, 79 for
temperature control systems utilizing pressure modulators to
operate fluid pressure motors.
251, Valves and Valve Actuation, 25 for apparatus which by
means of a pilot valve controls the application of fluid
pressure to an expansible chamber motor which in turn
controls a main line valve.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
Subclass:
83
This subclass is indented under subclass 82. Apparatus which
utilize a fluid jet and one or more jet receiving orifices
with the control condition varying the pressure in the
orifices by varying the amount of jet fluid entering the
orifices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
625.6 for a jet control type pressure modulator combined
with a pilot valve and a supply and exhaust valve.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, subclass 3 for
expansible chamber motors combined with a jet type control
therefor.
239, Fluid Sprinkling, Spraying, and Diffusing, appropriate
subclasses, especially 505, 518+ and 587.1+ for jet producing
discharge members, per se.
Subclass:
84
This subclass is indented under subclass 82. Apparatus
wherein a plurality of modulating relays on followers are
connected in series; the output pressure of one controlling
the modulation in the next.
Subclass:
85
This subclass is indented under subclass 82. Apparatus in
which the modulated pressure is utilized in a feedback
arrangement to counterbalance the modulating control
element.
Subclass:
86
This subclass is indented under subclass 85. Apparatus in
which the modulated pressure is utilized in a second feedback
arrangement to counterbalance the counterbalance of the
modulating control element.
Subclass:
87.01
SELF-PROPORTIONING OR CORRELATING SYSTEMS:
This subclass is indented under the class definition.
Subject matter wherein a fluid flow in a first flow line is
proportioned or correlated with the fluid flow in a second
fluid flow line by a movable means, which is positioned in
one of the fluid flow lines and controlling the fluid flow in
the other fluid flow line in response to a sensor detecting a
variable condition or characteristic of the fluid in the
other fluid flow line.
(1) Note. The flow proportioning or correlating may
constitute plural separate flow lines, branches of the same
flow and a branch thereof.
(2) Note. The proportioning and correlating of the fluid
flows may be continuous or discontinuous and may vary
directly or inversely and according to any ratio or in any
manner.
(3) Note. Systems that rely on static means (e.g., a jet
pump) to produce a correlated flow are excluded.
SEE OR SEARCH THIS CLASS, SUBCLASS:
155 for gas lift devices for wells including a valve between
a gas line and a liquid column responsive to the pressure
differential between the gas and the liquid.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 198.1 for a system
including a chemical feeder and a separating means.
222, Dispensing, subclass 57 for dispensing of one material
controlled by the weight, volume, or pressure of a second
dispensed material.
251, Valves and Valve Actuation, 12 for mere fluid pressure
actuated valves, even though the flow through the valve may
be disclosed as being related or proportioned to the pressure
in the fluid pressure actuator line.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
Subclass:
87.02
Liquid level responsive:
This subclass is indented under subclass 87.01. Subject
matter wherein the sensor is detecting the variation in an
uppermost horizontal surface of the liquid in one of the flow
lines and in response thereto the sensor controls the flow in
the other flow line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
101.25 for a self-proportioning flow system with liquid
level sensing.
386 for a liquid level responsive means without
proportionate or correlated flow.
Subclass:
87.03
Flow rate responsive:
This subclass is indented under subclass 87.01. Subject
matter wherein the sensor is detecting the variation in the
amount of fluid flowing in one of the flow lines in a set
period of time or is detecting the variation in fluid
pressure (i.e., pressure differential) along the flow line
and in response thereto the sensor controls the flow in the
other flow line.
Subclass:
87.04
Pressure differential:
This subclass is indented under subclass 87.03. Subject
matter wherein the sensor is detecting the variation of the
fluid pressures at two distinct points along one of the flow
lines and in response thereto the sensor controls the flow in
the other flow line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
101 for the self-proportioning flow system responsive to
flow comparison or pressure differential.
Subclass:
87.05
Plural sensors:
This subclass is indented under subclass 87.01. Subject
matter including two or more sensors for detecting two
distinct or similar conditions or characteristics of the
fluid in one of the flow lines and in response thereto the
sensors control the flow in the other flow line.
Subclass:
87.06
For single valve:
This subclass is indented under subclass 87.05. Subject
matter comprising one valve element and wherein the sensors
operate only one valve element to control the flow.
Subclass:
88
This subclass is indented under subclass 87.01. Systems in
which a condition of a fluid mixture is maintained by
controlling the flow of at least one of the fluids mixed in
response to a means which sense the condition of the
mixture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3 for the corresponding processes.
Subclass:
89
This subclass is indented under subclass 88. Systems in
which a fluid flow is divided into a plurality of flow paths
which are subsequently recombined, the ratio of the flows
thus divided and recombined being controlled in response to a
means sensing a condition to be maintained.
(1) Note. This subclass includes, for example, systems in
which one of the plurality of flow paths pass through a means
to treat the fluid to restore the property to be maintained,
the amount of fluid passing through the treating means being
controlled by the condition sensing means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
Subclass:
91
This subclass is indented under subclass 88. Systems in
which the condition maintained or sensed is specific
gravity.
SEE OR SEARCH THIS CLASS, SUBCLASS:
403 for systems in which a single flow is controlled by
weight of an accumulated fluid, and see the search notes to
subclass 403.
Subclass:
92
This subclass is indented under subclass 88. Systems in
which the condition maintained or sensed is viscosity or
consistency.
(1) Note. Due to their similarity with systems classified
in this subclass, systems are also included in which the
viscosity or consistency of a stream is sensed and in
response thereto the subsequent addition of water is
controlled in order to produce a predetermined or desired
viscosity or consistency.
SEE OR SEARCH THIS CLASS, SUBCLASS:
4 for the corresponding process.
SEE OR SEARCH CLASS:
162, Paper Making and Fiber Liberation, subclass 258 and 380
for systems for maintaining the consistency or viscosity of
paper making pulp combined with paper making apparatus.
Subclass:
93
This subclass is indented under subclass 88. Systems in
which the condition maintained or sensed is an optical or
chemical property.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5 for processes of controlling flow according to the
conductivity of the mixture.
392 for control of a single fluid flow by sensing electrical
characteristics.
SEE OR SEARCH CLASS:
250, Radiant Energy, 200 for photocell circuits.
356, Optics: Measuring and Testing, for examination of
material by light for optical properties particularly 128
for refraction tests, subclasses 410+ for shade or color
tests involving flowing liquids, and subclasses 432+ for
light transmission tests involving gases or liquids.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, 50 for chemical
analyzers; and subclasses 105+ for apparatus operating in
response to a sensed condition.
Subclass:
94
This subclass is indented under subclass 87.01. Subject
matter in which a condition of the fluid in a boiler or water
heating system controls the flow of fuel used for heating the
boiler or water.
SEE OR SEARCH THIS CLASS, SUBCLASS:
386 for liquid level responsive or maintaining systems.
468 for thermally responsive controllers, and see the search
notes thereto.
SEE OR SEARCH CLASS:
122, Liquid Heaters and Vaporizers, subclass 448.1 and 449
for water heaters and boilers with automatic regulation of
the fuel and water.
Subclass:
98
This subclass is indented under subclass 87.01. Systems in
which the control means maintains a predetermined ratio
between flows in a plurality of flow lines.
(1) Note. The flows may be separate or may subsequently be
combined or may be branches from a single source of a fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
577-579, for systems having a tank with movable or adjustable
outlet or overflow pipe.
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
861-887, for systems having flow control means for branched
passages.
SEE OR SEARCH CLASS:
73, Measuring and Testing, 195 for rate of flow meter
systems employing two or more meters usually for measuring
and comparing a plurality of flows.
210, Liquid Purification or Separation, subclass 101 for
proportionate feed means combined with separating means.
261, Gas and Liquid Contact Apparatus, appropriate subclass
for gas and liquid contact devices including means for
maintaining a proportional flow between a gas and liquid; see
particularly 69.1 for systems in which the flow of liquid is
controlled in response to the rate of flow in the gas line as
measured by means of a venturi in the gas line.
Subclass:
99
This subclass is indented under subclass 98. Systems in
which the proportioning or correlating means includes
mechanically interconnected flow displacement elements.
(1) Note. Flow displacement elements include primarily pump
and meter arrangements and vanes or other elements exposed to
the flow and shifted in response to variations therein, such
shifting elements usually acting both as controlling and
detecting means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
565 for nonautomatic distribution systems including pumps.
Subclass:
99.5
This subclass is indented under subclass 99. Subject matter
wherein the flow displacement element comprises a bodily
movable measuring chamber which provides continuous flow with
increment feeding.
SEE OR SEARCH THIS CLASS, SUBCLASS:
101.31 for a stationary measuring chamber.
SEE OR SEARCH CLASS:
222, Dispensing, 344 for systems wherein the movable
discharge assistant is not related to a continuous flow, and
see the search notes thereunder.
Subclass:
100
This subclass is indented under subclass 98. Systems in
which the sensing means is sensitive to the differences
between the rates of flow or pressure difference along the
line in a plurality of flow lines or at spaced points along
one line.
(1) Note. Means sensing changes in the difference between
the flows may control the flow in a third flow line or may
exercise a control on the flows compared.
SEE OR SEARCH THIS CLASS, SUBCLASS:
497 for line change condition responsive valves controlled
by change in the rate of flow, and see the search notes to
subclass 497.
Subclass:
101
This subclass is indented under subclass 100. Systems in
which a flow is divided into a plurality of flow paths and
the ratio between the flow in each branch maintained in
response to means sensing differences in flow or pressure in
each branch by throttling one branch an amount equal to the
amount the other branch is opened.
(1) Note. Many of the patents in this subclass are for
systems in which a single pressure fluid is employed to
supply a plurality of fluid pressure motors with means to
automatically maintain the amounts of fluid fed to each motor
proportional.
SEE OR SEARCH CLASS:
60, Power Plants, 420 for automatic control of a plurality
of fluid motors.
91, Motors: Expansible Chamber Type, appropriate subclasses
and especially 165 and 508+ for automatic control of a
plurality of expansible chamber motors.
Subclass:
101.11
This subclass is indented under subclass 100. Subject matter
wherein a shunt line having a reservoir therein relies on the
pressure difference between its connection to the main line
to cause flow therethrough to entrain material in the
reservoir, or to displace the reservoir material or an
intermediate distinct fluid layer or expansible chamber
device whereby the reservoir material is forced into the main
line without mixing with the flow while in the shunt.
Subclass:
101.19
This subclass is indented under subclass 100. Subject matter
comprising an electrical controller responsive to the sensing
means.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 129 for an electrical valve
actuator.
Subclass:
101.21
This subclass is indented under subclass 98. Subject matter
comprising an electrical controller responsive to a flow
displacement element.
Subclass:
101.25
This subclass is indented under subclass 98. Subject matter
comprising at least one means which senses the level of a
liquid in means to receive an accumulation thereof and in
response thereto exercises a control of the flow in one or
more of the flow lines.
SEE OR SEARCH THIS CLASS, SUBCLASS:
386 for liquid level responsive means without proportionate
or correlated flow. See the search notes thereunder.
Subclass:
101.27
This subclass is indented under subclass 101.25. Subject
matter wherein a weir or valve is responsive to the level
sensing means.
Subclass:
101.29
This subclass is indented under subclass 101.25. Subject
matter wherein a swinging outlet pipe controls the flow from
an accumulator or tank responsive to the level sensing
means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
577 for a tank with a movable or adjustable outlet or
overflow pipe.
Subclass:
101.31
This subclass is indented under subclass 98. Subject matter
comprising a measuring type discharge assistant in one flow
line responsive to a flow displacement element in another
flow line or by the weight of accumulated fluid of a
proportionate part of the flow in another line to provide
continuous flow through the system with increment feeding.
SEE OR SEARCH CLASS:
222, Dispensing, 261 for dispensing apparatus with discharge
assistants.
Subclass:
102
This subclass is indented under subclass 87.01. Systems in
which an outlet or receiver alternatively receives a fluid
from a source of supply and drains the fluid to an exhaust,
the flow of fluid from the supply or to the exhaust, being
controlled in response to a means sensing a change in
condition.
(1) Note. Many of the patents classified in this subclass
are drawn to distributor valves for fluid motors.
SEE OR SEARCH THIS CLASS, SUBCLASS:
224 for tire inflation apparatus which may have condition
responsive filling and relief valves
596 for distribution systems involving stop and waste
arrangements, and see the search notes thereto.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, appropriate subclasses
for apparatus under this definition combined with an
expansible chamber motor which is controlled thereby.
Subclass:
103
This subclass is indented under subclass 102. Systems in
which an outlet or receiver is alternately connected to a
source of suction or vacuum and a source of fluid under
pressure or vent (usually the atmosphere).
(1) Note. Many of the patents classified in this subclass
are for milking machine pulsators.
SEE OR SEARCH THIS CLASS, SUBCLASS:
526 for vacuum relief valves of the type responding to fluid
pressure exerted directly on the valve face.
SEE OR SEARCH CLASS:
119, Animal Husbandry, 14.01 for milking machines.
Subclass:
104
This subclass is indented under subclass 103. Apparatus
which include a snap acting or trip linkage in the control
system.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 66 for valves with biased
trips, and see the search notes to subclass 66, and subclass
76 for snap action valves, per se, and see the search notes
thereto.
Subclass:
105
This subclass is indented under subclass 103. Apparatus
wherein the flow controlling valve is moved by a fluid servo
under control of a second valve which is itself fluid
operated under control of the first valve, there being no
mechanical linkage between the two valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
488 for line condition change responsive fluid pressure type
servo or pilot controlled valves.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 28 for fluid servo or pilot
actuated valves having fluid actuated pilot valve.
Subclass:
106
This subclass is indented under subclass 102. Systems which
include two outlets or receivers, one outlet or receiver
being connected to the supply while the other is connected to
the exhaust, the connections being reversed or changed in
response to a means sensing a change in condition.
(1) Note. Many of the patents classified in this subclass
are drawn to distributor valves for plural expansible chamber
motors.
SEE OR SEARCH THIS CLASS, SUBCLASS:
625 for multiway valve units and their actuators, and see
the search notes to subclass 625.
Subclass:
107
This subclass is indented under subclass 102. Systems
wherein a waste or drain is opened in response to the
stopping of the fluid flow from the supply to the outlet or
receiver.
SEE OR SEARCH THIS CLASS, SUBCLASS:
61 for stop and waste systems which are responsive to means
sensing freeze conditions.
596 for stop and waste systems not responsive to any change
in a condition, and see the search notes thereto.
Subclass:
109
This subclass is indented under subclass 87.01. Systems in
which a single flow is divided into a plurality of flow paths
or a plurality of flow paths are combined into a single flow
path or in which a single flow path is divided and then
recombined, and in which the flow in one branch or line is
controlled in response to a change in a condition in another
branch or line.
(1) Note. This and indented subclasses takes only those
systems which include some significant branched structure
such as having a valve and/or sensing means in a plurality of
the branches or which require branched flow in order to be
operative. For example, a pressure flow line having a mere
relief valve or pressure relief passage mounted in the side
is not classifiable as a branched system, because the outflow
end of the line is not necessary for the operation of the
pressure relief valve; such valves operate in the same manner
when applied to a tank.
(2) Note. Plural relief valves opening into the atmosphere
or the same tank or source are not branched flow systems, nor
is a valve in which the flow is divided and recombined within
the same valve body a branched flow system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
455 for relief and other condition responsive valves whether
mounted in a flow line or in a container. (See (1) Note.)
561 for branched flow distribution systems in which there is
no control of a flow in response to a change in a sensed
condition.
Subclass:
110
This subclass is indented under subclass 109. Systems in
which a single flow path is divided into a plurality of
branch flow paths which are in turn recombined into a single
flow path and in which at least one branch flow path is
controlled in response to a sensing means which is at least
partially affected by a condition in another branch flow
path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
89 for mixture condition maintaining or sensing systems
involving dividing and recombining the flow.
115.01 for by-pass or relief flows controlled by main line
condition.
599.09 for systems dividing into parallel flow lines, having
a fluid pressure-regulating valve, then recombining.
Subclass:
111
This subclass is indented under subclass 109. Systems in
which a plurality of flows from separate sources are joined,
or are provided with a common outflow, and in which at least
one flow path is controlled in response to a sensed condition
change.
SEE OR SEARCH THIS CLASS, SUBCLASS:
88 for system in which a plurality of fluids are mixed and
the flow of at least one of the fluids is controlled in
response to a change in a sensed condition of the mixture.
98 for self-proportioning systems involving mutual control
features in plural lines.
480 for combustion engine induction type governor valves
controlling one or more auxiliary inlets, the main flow also
being controlled in some instances.
602 for branched flow distribution systems with multiple
inlets and a single outlet in which there is no control of a
flow in response to a change in a sensed condition.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 57 for control of a dispensed
material by the weight, volume or pressure of a second
dispensed material.
Subclass:
112
This subclass is indented under subclass 111. Systems in
which flow in one inlet is alternated with the flow in a
second inlet or is substituted therefor in response to a
sensing of a changed condition.
Subclass:
113
This subclass is indented under subclass 112. Systems in
which the control is in response to a failure or depletion of
the source of the flow in one of the inflow.
(1) Note. Many of the patents in this subclass are drawn to
bottled gas handling devices for substituting a second source
of gas for the first when the pressure in the first drops
below a satisfactory value.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 6 for gas or vapor dispensing of
this type.
Subclass:
114
This subclass is indented under subclass 111. Systems in
which one inflow is added to or supplements the second flow
and is in response to a sensed condition change such as
reduction in pressure or flow in the second inflow or in the
combined flow or in the level of accumulated fluid derived
from the second or combined flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
98 for self proportioning flow systems involving the uniting
of a plurality of inflows with mutual control effects.
Subclass:
115.01
Bypass or relief controlled by main line fluid condition:
This subclass is indented under subclass 109. Subject matter
including a flow line with an inlet and outlet for a main
flow and an outlet branch or bypass in which the flow is
controlled in response to a variation in the fluid condition
(e.g., fluid level, flow rate or pressure, or the like) in
the main flow line detected by a sensor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
223 for inflatable article filling means having a back
pressure cut-off or relief means.
455 for relief and other condition responsive valves whether
mounted in a flow line or container, in which there is no
significantly claimed branched flow structure.
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 96.1 for a liquid
purification or separation responsive to a variation of
constituents in a liquid mixture.
Subclass:
115.02
Liquid level responsive:
This subclass is indented under subclass 115.01. Subject
matter wherein the sensor is detecting the variation in the
levels of the liquid in the main line and in response thereto
the sensor controls the flow in the bypass or relief.
SEE OR SEARCH THIS CLASS, SUBCLASS:
87.02 for a self-proportioning and correlating having a
liquid level sensor.
101.25 for a self-proportioning flow system having a liquid
level sensor.
Subclass:
115.03
Flow rate responsive:
This subclass is indented under subclass 115.01. Subject
matter wherein the sensor is detecting the variation in the
quantity of the fluid flowing in the main flow line in a set
period of time and in response thereto the sensor controls
the flow in the bypass or relief.
(1) Note. This subclass also includes a flow measurement by
a pressure differential along the main line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
87.03 for a self-proportioning and correlating system having
a flow rate sensor.
107 for supply and exhaust-type waste valves opening in
response to the stoppage of the main line flow.
118.04 for flow rate responsive plural outflows.
215 for back flow prevention by vacuum breaking.
455 for line condition responsive valves which respond to a
change in the flow rate.
Subclass:
115.04
Including controlling main line flow:
This subclass is indented under subclass 115.03. Subject
matter wherein the sensor is regulating the flow in the main
line in response to the variation in the flow rate.
SEE OR SEARCH THIS CLASS, SUBCLASS:
596.12 for supply and exhaust system with bypass.
Subclass:
115.05
Relief or bypass closes as main opens:
This subclass is indented under subclass 115.04. Subject
matter wherein the sensor, in response to the change in the
flow rate, is simultaneously opening a main line valve and
closing a relief valve in a branch line or vice versa.
Subclass:
115.06
Bypass or relief valve biased open:
This subclass is indented under subclass 115.03. Subject
matter comprising a valve means for permitting the flow to
the bypass or relief valve is held open in absence of the
flow by a flexibly adjustable device (e.g., a weight of the
valve body itself, or a spring or such similar flexible
means).
SEE OR SEARCH THIS CLASS, SUBCLASS:
115.16 for pressure responsive biased open bypass or relief
valve.
Subclass:
115.07
Pilot valve operated:
This subclass is indented under subclass 115.03. Subject
matter comprising an auxiliary valve control and wherein the
bypass or relief valve is controlled by the auxiliary control
valve in response to the variation of the flow rate in the
main line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
300 for a supplemental valve independent of a main valve for
hydrant-type fluid handling.
Subclass:
115.08
Carried choke:
This subclass is indented under subclass 115.03. Subject
matter wherein the sensor is a fluid flow restricting element
which is an integral part of the bypass or relief valve and
the element is moving with the bypass or relief valve to
restrict the flow.
Subclass:
115.09
Choke:
This subclass is indented under subclass 115.03. Subject
matter wherein the sensor includes a device for restricting
the flow of the fluid in the main flow line.
SEE OR SEARCH CLASS:
166, Wells, 316 for changeable chokes.
Subclass:
115.1
Variable choke resistance:
This subclass is indented under subclass 115.09. Subject
matter wherein the choke is adjustable to provide different
flow resistances without requiring disassembly of the
sensor.
Subclass:
115.11
Venturi:
This subclass is indented under subclass 115.03. Subject
matter wherein the sensor includes a device which is a part
of the main flow passage having a cross section of the part
gradually constricted to a throat between two ends of the
part and gradually expanded from the throat to the cross
section of the passage.
(1) Note. The device is used with a pressure tap at the
throat and another pressure tap at the normal flow passage to
register the pressure differential at the throat relative to
a pressure in the normal passage and signals the sensor which
in turn exercises the control of the flow in the bypass or
relief.
Subclass:
115.12
Flapper:
This subclass is indented under subclass 115.03. Subject
matter wherein the sensor includes a member supported at one
end and moving by the momentum of the fluid in the flow line
to operate the bypass or relief valve.
Subclass:
115.13
Pressure responsive:
This subclass is indented under subclass 115.01. Subject
matter wherein the sensor is detecting the pressure of the
fluid in the main flow line and in response thereto controls
the bypass or relief valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
118.06 and 119.08+, for self-controlled pressure responsive
plural outflows and pressure responsive alternate and
substituted plural outflows respectively.
Subclass:
115.14
Common sensor for both bypass or relief valve and other
branch valve:
This subclass is indented under subclass 115.13. Subject
matter comprising an additional valve in another flow path
and wherein the sensor which controls the bypass or relief
valve also controls the additional valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
488 for fluid pressure-type pilot valves.
Subclass:
115.15
Bypass or relief valve opens as other branch valve closes.
This subclass is indented under subclass 115.14. Subject
matter wherein the sensor opens the bypass or relief valve in
the main line while it closes the additional valve in the
main line or vice versa.
Subclass:
115.16
Bypass or relief valve biased open:
This subclass is indented under subclass 115.13. Subject
matter wherein the bypass or relief passage is held open in
absence of the fluid pressure by a flexibly adjustable device
(e.g., a weight of the valve body itself, or a spring, or
such similar flexible means).
SEE OR SEARCH THIS CLASS, SUBCLASS:
115.06 for flow rate responsive biased open bypass or relief
valve.
Subclass:
115.17
Increasing pressure progressively closes then reopens bypass
or relief valve:
This subclass is indented under subclass 115.16. Subject
matter wherein the increase in the fluid pressure
progressively closes the bypass or relief valve and reopens
at still higher pressure.
Subclass:
115.18
Bypass or relief valve responsive to pressure downstream of
outlet valve:
This subclass is indented under subclass 115.13. Subject
matter wherein the outlet branch includes a valve which is
located before the bypass or relief valve and the bypass or
relief valve is controlled by the fluid pressure between the
outlet valve and the bypass or relief valve.
Subclass:
115.19
Pilot valve:
This subclass is indented under subclass 115.18. Subject
matter comprising an auxiliary control valve and wherein the
bypass or relief valve is controlled by the auxiliary control
valve in response to the pressure in the main flow line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
488 for a fluid pressure-type pilot control.
Subclass:
115.2
Outlet valve carried by bypass or relief valve:
This subclass is indented under subclass 115.18. Subject
matter wherein the outlet valve is an integral part of the
bypass or relief valve and the outlet valve moves with the
bypass or relief valve.
(1) Note. The outlet valve in this subclass is located
between the pressure sensor and the bypass or relief valve.
Subclass:
115.21
Plural sensors for single bypass or relief valve:
This subclass is indented under subclass 115.13. Subject
matter comprising at least two pressure sensors for
controlling either the bypass or relief valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
115.03 for a flow responsive bypass or relief valve.
Subclass:
115.22
Sensors interconnected by timing or restrictive orifice:
This subclass is indented under subclass 115.21. Subject
matter wherein the pressure sensors are connected to each
other directly by means of a restrictive passage in order
that all the sensors react to the same pressure, but with a
different speed of response.
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, 109 for fluid
retarders.
Subclass:
115.23
Pilot valve operated:
This subclass is indented under subclass 115.13. Subject
matter comprising an auxiliary control valve and wherein the
bypass or relief valve is controlled by the auxiliary control
valve in response to the pressure in the main flow line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
115.07 for a pilot valve responsive to a fluid flow rate.
Subclass:
115.24
Mechanical movement between sensor and valve:
This subclass is indented under subclass 115.13. Subject
matter wherein the sensor and the bypass or relief valve are
so interconnected that the sensor is moving at a different
rate and in different direction than the movement of the
bypass or relief.
Subclass:
115.25
Electrical control:
This subclass is indented under subclass 115.13. Subject
matter comprising an electrical element and wherein the
sensor controls the bypass or relief by means of the
electrical element.
Subclass:
115.26
Sensor rigid with valve:
This subclass is indented under subclass 115.13. Subject
matter wherein the sensor is either (a) assembled as an
integral part of the bypass or relief valve, or (b) attached
inflexibly to the bypass or relief valve.
Subclass:
115.27
Flexible sensor:
This subclass is indented under subclass 115.26. Subject
matter wherein the sensor is constructed of a thin pliable or
resilient material such as used in a diaphragm or bellows or
the like.
Subclass:
115.28
Pressure responsive outlet valve:
This subclass is indented under subclass 115.26. Subject
matter comprising a valve on the outlet branch and wherein
the valve is responsive to a pressure being sensed in the
outlet branch.
Subclass:
116.3
This subclass is indented under subclass 115. Devices with a
correlated fluid pressure responsive regulator or pressure
reducing valve controlling the inlet branch.
SEE OR SEARCH THIS CLASS, SUBCLASS:
505.11 for pressure regulators with independently operable
relief valves.
Subclass:
116.5
This subclass is indented under subclass 116.3. Devices in
which a common sensing means for both inlet control and
relief control has a valve controlled outlet or relief
passage.
Subclass:
118.01
Plural outflows:
This subclass is indented under subclass 109. Subject
matter comprising a sensor and wherein the flow is from a
single source and is divided in to a plurality of paths which
the flow may take to separate destinations and the flow is
controlled by the sensor in response to the change in the
condition (e.g., fluid level, flow rate, or pressure, or the
like), or a characteristic of the fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
98 for plural flow systems with mutual control devices.
115.01 for branch flow systems in which a bypass is
controlled in response to a change in condition.
455 for pressure relief valve which may be mounted on the
side of the flow line in which there is no branched flow
characteristics claimed.
861 for nonautomatic distribution systems having a plurality
of controlled outflows.
Subclass:
118.02
Single actuator operates plural outlets simultaneously:
This subclass is indented under subclass 118.01. Subject
matter comprising an outlet valve in each outflow and wherein
the outlet valves are opened or closed at the same time by
only one sensor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
625 for noncorrelated multiway valves.
862 for plural outlet valves controlled by a single operator
without correlation control.
Subclass:
118.03
Biased open isolation valve:
This subclass is indented under subclass 118.01. Subject
matter comprising an outlet valve in each outflow and wherein
each outlet valve is held open in the absence of a fluid
pressure by a flexibly adjustable device (e.g., a weight of
the valve body itself, or a spring) and at least one valve
closes in response to a sudden pressure drop or flow increase
in the outlet line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
458 through 466, for valves on a single line (one inlet and
one outlet) serving the same purpose, but requiring reset.
498 and 517+, for valves on a single line that are biased
open and shut when the downstream line has a sudden pressure
drop.
SEE OR SEARCH CLASS:
303, Fluid-Pressure Brake and Analogous Systems, subclass
84.2 for a flow retarding isolation valves.
Subclass:
118.04
Flow rate responsive:
This subclass is indented under subclass 118.01. Subject
matter wherein the sensor is detecting a change in the
quantity of the fluid flowing in the main line in a set
period of time and in response thereto controls the
outflows.
SEE OR SEARCH THIS CLASS, SUBCLASS:
115.03 for bypass or relief controlled by the flow rate in
self-controlled branch flow system.
Subclass:
118.05
Primer valve:
This subclass is indented under subclass 118.04. Subject
matter wherein the change in the fluid flow rate in the
main line actuates an outlet leading to a liquid trap seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247 for liquid trap seals or liquid valves.
Subclass:
118.06
Pressure responsive:
This subclass is indented under subclass 118.01. Subject
matter wherein the sensor detects a change in the fluid
pressure in the main line and in response thereto controls
the outflows.
SEE OR SEARCH THIS CLASS, SUBCLASS:
115.13 for a similar device controlling a bypass or relief
valve.
119.08 for self-controlled pressure responsive alternately
or successively substituted plural outflows.
Subclass:
118.07
With external control for correlating valve (e.g., manual):
This subclass is indented under subclass 118.06. Subject
matter wherein, in addition to the pressure responsive
sensor, the outflows are controlled by a device independent
of the condition of the flow line.
(1) Note. Modifiers which merely vary the loading are not
deemed to constitute external control means within this
definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
481 for suction controlled valves which are manually
modified or adjusted.
522 for direct response valves in combination with external
means for opposing the closing bias.
613 for system comprising plural valves arranged in series
in the flowline wherein manual or external means operate one
valve to produce a change in the condition in the flowline in
order to utilize such changed condition to effect automatic
operation of the other valve in the flowline.
Subclass:
119.01
Alternately or successively substituted outflow:
This subclass is indented under subclass 118.01. Subject
matter wherein (a) the fluid is flowing first through one
outlet and then changed to another outlet, or (b) more than
two outlets are substituted for each other in sequence; in
response to the change in the condition or characteristic of
the main line flow detected by the sensor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
160 for plural feed traps alternately filled and alternately
discharged by gas pressure.
625 for multiway valve unit actuation which is not
responsive to a change in condition.
Subclass:
119.02
Four port reversing valve:
This subclass is indented under subclass 119.01. Subject
matter including a four way valve having an inlet port, an
outlet port and two intermediate ports, the valve being
selectively movable into two positions, in one position the
inlet port being connected to the first intermediate port and
the second intermediate port being connected to the outlet
port, and in the other position the inlet port being
connected to the second intermediate port and the first
intermediate port being connected to the outlet port.
SEE OR SEARCH THIS CLASS, SUBCLASS:
309 for reversing valves in connection with a regenerative
type of furnace.
625.43 for four port reversing valve not of the correlating
type.
Subclass:
119.03
Responsive to pressure or flow interruption:
This subclass is indented under subclass 119.01. Subject
matter comprising a valve and wherein the alternately or
successively substituted outflow is controlled by the valve
in response to a break in the pressure of the fluid or a
break in the flow of the fluid being detected by the sensor.
Subclass:
119.04
Plural outlets control with automatic reset:
This subclass is indented under subclass 119.03. Subject
matter wherein the valve is regulating more than one outlet;
said valve opens one outlet in response to the pressure or
flow interruption and closes that outlet and opens another
outlet when the pressure or flow is restored.
(1) Note. The valves in this subclass are diverter valves
that operate, for example, when a valve in a rinse sprayer is
manually opened.
Subclass:
119.05
Manually set to a single outflow position:
This subclass is indented under subclass 119.03. Subject
matter wherein the sensor causes the valve to move from a
first position to a second position to open or close one
outlet, but the valve is moved back to the first position by
an application of a force exerted by a living being.
Subclass:
119.06
Flow rate responsive:
This subclass is indented under subclass 119.01. Subject
matter wherein the alternately or successively substituted
outflow is responsive to a change in the amount of fluid
flowing in the flow line in a set period of time being
detected by the sensor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
87.03 for a flow rate responsive bypass or relief.
118.04 for flow rate responsive plural outflows.
Subclass:
119.07
Flow sensing turbine:
This subclass is indented under subclass 119.06. Subject
matter wherein the sensor comprising a member pivoted for
oscillation or rotation, and having blades, vanes or surfaces
which are exposed to the flow and rotating or tending to
rotate the member.
Subclass:
119.08
Pressure responsive:
This subclass is indented under subclass 119.01. Subject
matter wherein the change in the condition is a fluid
pressure detected by the sensor for controlling the
alternately or successively substituted outflow of the fluid
in the main flow line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
87.04 for a pressure differential sensor controlling the
flow.
118.06 for pressure responsive plural outflows.
Subclass:
119.09
Responsive to outlet pressure:
This subclass is indented under subclass 119.08. Subject
matter wherein in response to the change in the fluid
pressure in the outlet branch the sensor controls the outflow
of the fluid.
Subclass:
119.1
Electrical control:
This subclass is indented under subclass 119.01. Subject
matter comprising an electrical element and wherein the
sensor controls the outlet by means of the electrical
element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
596.16 for an electric pilot-actuated supply and exhaust
system.
Subclass:
120
This subclass is indented under subclass 119. Systems in
which the control of the flow is in response to a filling of
a separate or auxiliary tank of the gravitating or float
operating type.
(1) Note. Many of the patents in this subclass are drawn to
rain spouts in which the initial flow is wasted to remove
dirt before the rain water is fed to the cistern or storage
vessel.
SEE OR SEARCH THIS CLASS, SUBCLASS:
386 for other liquid level responsive flow control,
especially subclass 408 for gravitating tank devices and
subclasses 409+ for float operated valves, and see the search
notes to subclasses 386, 403, 408, and 409.
Subclass:
121
This subclass is indented under subclass 119. Systems in
which the control of the flow is in response to a filling of
a tank or receivers receiving fluid from an outflow of the
system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
115.01 for by-pass control in response to a change in main
line condition.
386 for other liquid level responsive flow control.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, 198 for filling devices controlled by the
quantity in a separable receiver.
222, Dispensing, subclass 56 for delivery from a dispenser
controlled by the quantity in a discharging receiver.
Subclass:
122
This subclass is indented under subclass 121. Systems in
which the filling of the tank or receiver is sensed by means
of a float.
SEE OR SEARCH THIS CLASS, SUBCLASS:
386 particularly subclasses 397, 398+ and 409+ for other
flow control responsive to a float, and see the search notes
to subclass 409.
Subclass:
123
This subclass is indented under the class definition.
Apparatus having a flow passage comprising two branches or
legs of unequal effective length by which a liquid can be
transferred to a lower level over an intermediate elevation
by the pressure of the atmosphere in forcing the liquid up
the shorter branch or leg immersed in it while the excess of
weight of the liquid in the longer branch (when once filled)
causes a continuous flow.
(1) Note. This group of subclasses is directed to the
siphon subcombination, i.e., the siphon element, per se, and
this element associated with supply and/or receiver chambers
and/or such other adjuncts as are commonly found in this
class combined with the basic subject matter of the class.
Patents for combinations of siphons with other art devices
are classified with the art device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
591 for tanks with internally extending inverted U passage,
which are not intended to operate as siphons even though of
the proper design for it.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, 368 for water
closet flushing tanks having an outlet siphon and subclasses
421+ for siphon bowls.
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, subclass 230 for siphon tube filling of
separable receivers, and see the search notes thereto.
222, Dispensing, subclass 204 for dispenser type siphons
with external starting means and subclass 416 for dispensing
siphons, per se.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
Subclass:
124
This subclass is indented under subclass 123. Apparatus
including a plurality of siphons.
Subclass:
125
This subclass is indented under subclass 124. Apparatus in
which the siphons are connected to the compartments of a tank
truck to discharge the liquid contained therein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
267 for tank trucks having a plurality of compartments with
manifold or grouped outlets arranged for parallel flow.
899 for vehicle supported fluent material handling systems,
and see the search notes to subclasses 351 and 899.
Subclass:
126
This subclass is indented under subclass 124. Apparatus in
which the plural siphons operate successively to produce
plural discharges from the same or from different supply
chambers. Means are usually provided whereby the termination
of the discharge of one of the siphons initiates the
discharge of a subsequently operated siphon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
627 627.5 and 628+, for sequentially actuated valves, and see
the search notes thereto.
Subclass:
127
This subclass is indented under subclass 126. Apparatus in
which at least some of the siphons are supplied from
different chambers.
SEE OR SEARCH THIS CLASS, SUBCLASS:
256 for sequentially filled and emptied plural tanks in
parallel relation.
Subclass:
128
This subclass is indented under subclass 124. Apparatus
having a main siphon through which the major portion of the
fluid is discharged and an auxiliary siphon which operates to
start or stop fluid flow through the main siphon, or, after
discharge of the main siphon, restores some or all of the
main siphon operating means to a position permitting a
subsequent discharge.
(1) Note. In series arrangements of plural tanks and
siphons wherein one siphon discharges into a tank which is
emptied by a second siphon, the first siphon is not regarded
as a starter for the second when discharge of the second
siphon results merely upon accumulation of sufficient fluid
in the tank to permit such discharge, and patents for this
subject matter are not included in this or the indented
subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
132 for periodic siphons, or those which discharge as often
as a supply sufficient for starting is accumulated.
142 for other siphon starting means.
Subclass:
129
This subclass is indented under subclass 128. Apparatus
having a float which fills with liquid and sinks to initiate
discharge through the main siphon, the auxiliary siphon then
emptying the float.
SEE OR SEARCH THIS CLASS, SUBCLASS:
404 for liquid level responsive control means comprising a
sinking or bucket type float, and see the search notes
thereto.
427 for float controlled valves with float leakage
disposal.
Subclass:
130
This subclass is indented under subclass 123. Apparatus
having a receiver for the discharge of the siphon, the siphon
discharge being controlled by a condition in the receiver.
SEE OR SEARCH THIS CLASS, SUBCLASS:
121 for self correlating systems controlled by a filled
receiver.
453 for liquid level maintaining systems including
barometric control.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, subclass 230 for siphon tube filling of
separable receivers, and see the search notes thereto.
222, Dispensing, subclass 56 for automatic control of
dispensing by the quantity in a receiver which is also
discharging.
Subclass:
131
This subclass is indented under subclass 130. Apparatus in
which a float responsive to a condition in the receiver
controls discharge of the siphon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
135 for siphon discharge controlled by float means
responsive to liquid accumulation in the system.
409 for float operated valves of general utility, and see
the search notes to subclass 409.
Subclass:
132
This subclass is indented under subclass 123. Apparatus
having means responsive to a condition or characteristic of
the fluid in the system whereby the siphon is caused to
discharge at recurrent intervals, i.e., as often as a certain
level of tank contents is reached.
SEE OR SEARCH THIS CLASS, SUBCLASS:
130 for apparatus in which siphon discharge is controlled by
a condition in a receptacle into which the siphon
discharges.
396 for self-emptying tanks of other types which empty in
response to liquid level as often as filled, and see the
search notes to subclass 396.
SEE OR SEARCH CLASS:
73, Measuring and Testing, subclass 222 and 226 for tank
type meters with siphon discharge.
Subclass:
133
This subclass is indented under subclass 132. Apparatus
having means whereby the siphon may be discharged either by
manual operation or by a condition or characteristic of the
fluid in the system, the manual control being either
auxiliary to the automatic or the control being convertible
from one type to the other.
(1) Note. See the class definition, section 3 for search
notes on combined automatic and nonautomatic controls in this
and related classes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
269 for convertible fluid handling systems.
Subclass:
134
This subclass is indented under subclass 132. Apparatus
having an additional accumulation receptacle arranged to
discharge recurrently into the siphon chamber, such recurrent
discharge initiating discharge of the siphon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
142 for other siphon starting means.
Subclass:
135
This subclass is indented under subclass 132. Apparatus
having a float responsive to the accumulation of liquid in
the siphon chamber in which the float actuates means for
admitting liquid to the siphon element to initiate liquid
flow there through.
SEE OR SEARCH THIS CLASS, SUBCLASS:
409 for float controlled valves of general utility, and see
the search notes to subclass 409.
Subclass:
136
This subclass is indented under subclass 132. Apparatus in
which the liquid accumulating in the siphon chamber traps air
in the siphon element and means is provided to release such
trapped air to initiate liquid flow through the siphon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
143 for siphon venting or breaking.
144 for removal of the air which accumulates in siphons
during use.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, 369 for water
closet flush tanks having an outlet siphon which is prevented
from discharging until air is positively release therefrom.
Subclass:
137
This subclass is indented under subclass 136. Apparatus in
which the trapped air releasing means is actuated by a float
responsive to accumulation of liquid in the siphon system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
202 and 213+, for liquid level responsive vents for gas in
diverse fluid containing pressure systems.
409 for float operated valves of general utility and see the
search notes to subclass 409.
583 for distribution systems having a gas vent and other
flow passages, and see the search notes to subclasses 583 and
587.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 69 for float operated vents in
dispensers.
Subclass:
138
This subclass is indented under subclass 136. Apparatus in
which the trapped air releasing means comprises a liquid trap
seal, which may be formed by suitable configuration of the
discharge end of the siphon element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247 for combinations of liquid trap seals with fluid
distribution apparatus other than siphons, and see the search
notes to subclass 247.
Subclass:
139
This subclass is indented under subclass 138. Apparatus in
which the air releasing seal comprises a second liquid trap
seal in addition to the air trapping seal necessarily present
at the discharge end of the siphon element.
Subclass:
140
This subclass is indented under subclass 123. Apparatus
combined with a strainer, filter, separator or sediment
trap.
SEE OR SEARCH THIS CLASS, SUBCLASS:
544 for other fluid distribution apparatus combined with
means for separating solid material from the fluid, and see
the search notes to subclass 544.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 416.1 for filter
means of that class (210) combined with means providing a
suction.
Subclass:
141
This subclass is indented under subclass 123. Apparatus
combined with a recorder, register, signal, indicator or
inspection window.
SEE OR SEARCH THIS CLASS, SUBCLASS:
551 for other fluid distribution apparatus combined with the
listed devices, and see the search notes to subclass 551.
Subclass:
142
This subclass is indented under subclass 123. Apparatus
having means for applying pressure to initiate, stop or
maintain liquid flow, to vent air for starting, stopping or
maintaining siphon flow, or for controlling the flow by
opening, closing or variably restricting the main flow path
of the siphon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
128 for siphons with auxiliary starting siphon.
130 for siphon discharge controlled by the receiver.
132 for periodic discharging or level responsive siphons.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 204 for dispenser siphons with
auxiliary starting means and subclass 416 for dispenser
siphons.
Subclass:
143
This subclass is indented under subclass 142. Apparatus in
which the siphon is provided with means for stopping or
regulating the flow through the siphon by admitting air into
the siphon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
151 for apparatus including siphons having a valve or
closure for controlling the flow of liquid therethrough.
215 for apparatus for preventing reverse flow siphoning
action in apparatus not normally operating by siphon action.
583 for distributing systems including a gas vent and at
least one other flow opening, and see the search notes to
subclasses 583 and 587.
Subclass:
144
This subclass is indented under subclass 142. Apparatus
having means for removing air which accumulates in the siphon
while it is discharging liquid, such means comprising a
positively acting eductor connected at one or more high
points of a siphon and having either a separate or a line jet
operated pumping means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
136 for release of trapped air to start a siphon of the
periodic type.
143 for siphon venting means which operate to reduce or stop
the flow in the siphon.
Subclass:
145
This subclass is indented under subclass 142. Apparatus in
which pressure either of liquid or a displacing gas is
developed in that part of the system which holds the material
into which the inlet end of the siphon dips to fill the
siphon and start the flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
130 for siphons started by controlling the position or
pressure condition of the receiver.
206 for gas pressure displacement of a liquid, and see the
search notes to subclass 206.
565 for distribution systems having a pump as part thereof,
and see the search notes to subclass 565.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, subclass 375 for
water displacer starters for siphons in water closet tanks.
222, Dispensing, subclass 204 for siphons combined with
discharge assistants in dispensers.
Subclass:
146
This subclass is indented under subclass 142. Apparatus in
which a movable siphon is provided with an enlarged entrance
chamber whereby when the chamber end is rapidly introduced
into the supply a surge of fluid through the line results,
which fills the siphon and initiates flow.
Subclass:
147
This subclass is indented under subclass 142. Apparatus in
which the means comprises a pump mounted in or on the
siphon.
SEE OR SEARCH THIS CLASS, SUBCLASS:
565 for distribution systems with pumps, and see the search
notes to subclass 565.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, 42 for siphon
starters for water closet tanks.
222, Dispensing, subclass 204 for siphons with pump or other
discharge assistant type starter.
Subclass:
148
This subclass is indented under subclass 147. Apparatus in
which the pump includes a piston.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, subclass 373 for
water closet flushing tanks having a siphon outlet which is
started by a piston or its equivalent.
Subclass:
149
This subclass is indented under subclass 148. Apparatus in
which the piston is moved in the flow passage of the siphon.
Subclass:
150
This subclass is indented under subclass 147. Apparatus in
which the pump comprises a collapsible bulb.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 209 for collapsible bulb fluid
pressure generators in dispensers.
Subclass:
150.5
This subclass is indented under subclass 142. Apparatus in
which the siphon is movably mounted so that the inlet end
comes into contact with the supply chamber wall when flow is
cut off, the contact either operating a valve or directly
blocking flow through the siphon.
Subclass:
151
This subclass is indented under subclass 142. Apparatus
having a flow controlling stopping means which comprises a
valve or closure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
131 for float-operated valves in receivers controlling the
discharge of siphons.
135 for float-operated valves for inlets to siphons of the
level responsive type.
Subclass:
152
This subclass is indented under subclass 123. Apparatus in
which the siphon is provided with means for mounting and/or
positioning it relative to the chamber from which liquid is
supplied to the siphon.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 416 for dispensing siphons, per
se.
Subclass:
153
This subclass is indented under subclass 123. Apparatus
comprising the siphon passage forming means, per se.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 416 for dispenser siphons, per
se.
Subclass:
154
This subclass is indented under the class definition.
Apparatus which contain under pressure a plurality of fluids
having diverse characteristics such as fluid phase (i.e., gas
and liquid) or specific gravity, and which fluids are in
contact in at least a part of the system.
(1) Note. The pressure need not exist continuously in the
system, but must be present at least some of the time.
(2) Note. This subclass does not include systems in which
diverse fluids as steam and water are utilized merely for
heating purposes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
241 for steam sterilization in fluid handling systems.
246 for liquid supplied at a valve interface, which liquid
may be different from the fluid handled in the system.
334 for gas and liquid containing systems for heating, as by
mixing steam and water. See Note (1) above.
SEE OR SEARCH CLASS:
222, Dispensing, 394 for dispensers with fluid pressure
discharge assistants, and see the search notes to subclass
394.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
Subclass:
155
This subclass is indented under subclass 154. Apparatus
which controls a gas to be injected or introduced into the
liquid column of well to elevate the liquid.
SEE OR SEARCH CLASS:
417, Pumps, subclass 109 for aerated column type pumps
combined with valve means for a controlling a gas inlet.
Subclass:
156
This subclass is indented under subclass 154. Apparatus
which includes a receiving chamber which holds a liquid for
subsequent discharge to a receiver at a higher pressure,
which discharge is controlled or enabled by the controlled
application of a gas pressure over the liquid equal to or
greater than the pressure to which the liquid is discharged.
(1) Note. The discharge may be to a closed receiver at
higher pressure than the trap filling pressure, which may be
at atmospheric pressure, or the discharge may be to
atmosphere or an open receiver from a vacuum system.
(2) Note. A feed or discharge trap in the fluid handling
art is an auxiliary chamber which collects or portions out a
separated quantity of fluid which is to be added to or
removed from the quantity in the container to which it is
auxiliary. It may discharge the separated quantity or merely
make it accessible.
SEE OR SEARCH THIS CLASS, SUBCLASS:
177 for gas traps which may utilize internal uncontrolled
pressure for liquid discharge.
206 for gas pressure discharge of non feed trap type
containers.
571 for plural tanks or compartments connected for serial
flow, and see the search notes to subclass 571.
SEE OR SEARCH CLASS:
122, Liquid Heaters and Vaporizers, 451 for feed-traps of
particular application to boilers.
417, Pumps, 118 for liquid pumping by supplying or
exhausting gaseous motive fluid to or from a liquid pumping
chamber.
Subclass:
157
This subclass is indented under subclass 156. Feed-traps
wherein the application of gas pressure is controlled by the
amount of liquid in the discharge receiving receptacle, as
the boiler.
SEE OR SEARCH THIS CLASS, SUBCLASS:
130 for siphon discharge controlled by the receiver.
205 for liquid filling by evacuating a container and see the
search notes thereto.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, 39 for diverse fluid containing pressure
filling systems wherein the filling means is controlled by
the gas condition in the receiver.
222, Dispensing, subclass 56 for automatic dispensing
controlled by the quantity in a discharging receiver.
Subclass:
158
This subclass is indented under subclass 157. Feed-traps
which include a gas pressure connection at the desired liquid
level in the discharging receiver.
SEE OR SEARCH THIS CLASS, SUBCLASS:
393 for level controlled valves having a control fluid
connection at the desired liquid level in nonpressure
systems.
Subclass:
159
This subclass is indented under subclass 156. Feed-traps
wherein the application of gas pressure is controlled by the
amount of liquid in the feed-trap chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
183 and 199+, for fluid responsive valves in fluid
separating traps in diverse fluid containing pressure
systems.
Subclass:
160
This subclass is indented under subclass 159. Feed-traps
which include a plurality of trap chambers.
(1) Note. The plural trap chambers may be arranged serially
or in parallel, as for alternating use.
Subclass:
161
This subclass is indented under subclass 160. Feed-traps
wherein alternately acting feed traps are moved by gravity to
discharge their contents and the lowering of one trap raises
the other trap.
SEE OR SEARCH THIS CLASS, SUBCLASS:
403 for liquid level responsive or maintaining control
systems operated by the weight of accumulated fluid,
especially subclass 408 for accumulation in the gravitating
tank, and see the search notes to subclasses 403 and 408.
SEE OR SEARCH CLASS:
177, Weighing Scales, subclass 90 for weighing apparatus in
which alternating weight chambers control flow of the
material being weighed.
Subclass:
162
This subclass is indented under subclass 159. Feed-traps
wherein liquid accumulates in a vessel which lowers by
gravity upon the accumulation of a predetermined amount of
liquid therein to control the admission of gas pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
189 for separating traps of the gravitating type in diverse
fluid containing pressure systems.
408 for liquid level responsive devices of the gravitating
tank type, and see the search notes thereto.
Subclass:
163
This subclass is indented under subclass 162. Feed-traps
wherein the vessel is an open-topped float which floats in
liquid and sinks when filled with liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
404 for sinking floats in liquid level responsive or
maintaining systems, and see the search notes thereto.
Subclass:
164
This subclass is indented under subclass 162. Feed-traps
wherein the vessel is pivoted and a fluid passage is provided
through the pivot.
Subclass:
165
This subclass is indented under subclass 159. Feed-traps
wherein the gas pressure application is controlled by a float
in the feed-trap chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
192 and 202, for float responsive fluid separating traps and
vents in diverse fluid containing pressure systems.
409 for float operated valves of general utility, and see
the search notes to subclass 409.
Subclass:
166
This subclass is indented under subclass 165. Feed-traps
wherein a valve in the liquid flow line to or from the trap
is actuated by a distinct positively acting mechanism in
conjunction with the float control of the gas inlet.
(1) Note. Self actuating valves such as check valves are
not "positively" actuated.
(2) Note. See the class definition, section 3 for search
notes on automatic valves combined with other actuating
means.
Subclass:
167
This subclass is indented under subclass 165. Feed-traps
which are not provided with a gas outlet, as the gas applied
to discharge the trap is in the form of a readily condensed
vapor such as steam which condenses to eliminate the gas
pressure after discharge to allow subsequent filling of the
trap.
Subclass:
168
This subclass is indented under subclass 165. Feed-traps
provided with gas inlet and outlet valves which are
integrally mounted on a single actuating stem.
(1) Note. See the class definition, section 4 for search
notes on plural valves in the fluid handling systems of this
and related classes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
411 for liquid level responsive or maintaining systems in
which plural valves are controlled by one float.
Subclass:
169
This subclass is indented under subclass 156. Feed-traps
wherein the gas pressure application to the feed-traps
controlled by manual or cyclic means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
631 for cyclic actuation of valves, and see the search notes
to subclass 631.
Subclass:
170
This subclass is indented under subclass 169. Feed traps
wherein the feed trap is moved into discharge relationship
with the receiver for discharge and the controlling gas
pressure is the pressure in the discharge receiver which may
enable discharge of the liquid by the mere flow connection of
the trap chamber to the receiver.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 636 for fluid flow discharge from
a movable trap chamber and subclasses 344+ for dispensers
with movable trap chambers.
406, Conveyors: Fluid Current, 63 for material intake into
a fluid current conveyor and comprising successively
registering pockets.
Subclass:
170.1
This subclass is indented under subclass 154. Apparatus in
which the fluids comprise a liquid and a gas which has been
intentionally and desirably entrained in the liquid to form a
mixture which is subject to frothing under certain conditions
and having means for preserving or modifying the pressure of
gas in the mixture, thereby controlling the amount of froth
released, retained or formed in the handling of the mixture.
(1) Note. Disclosures of froth or foam control functions
for structures of general utility in the fluid handling arts
does not result in classification in this or the indented
subclasses unless there is a claimed disclosure of a
combination of handling features which specialize the overall
apparatus to a foam controlling function and for which no
suitable general classification exists elsewhere.
SEE OR SEARCH THIS CLASS, SUBCLASS:
12.5 for methods of controlling foam in handling carbonated
liquids.
206 for gas pressure storage over or displacement of liquids
in diverse fluid containing pressure systems, and see the
search notes thereto.
SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 115 for processes of or compositions for or
subcombination compositions for the breaking of or inhibiting
of foam colloid systems, when generically claimed or when
there is no hierarchically superior provision in the USPC for
the specifically claimed art.
Subclass:
170.2
This subclass is indented under subclass 170.1. Apparatus
having means for sensing a force exerted by the mixture or of
either of its component parts, or means for sensing a fluid
level, such means causing operation of a control device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
386 for liquid level responsive or maintaining systems of
general application.
SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 115 for processes of or compositions for or
subcombination compositions for the breaking of or inhibiting
of foam colloid systems, when generically claimed or when
there is no hierarchically superior provision in the USPC for
the specifically claimed art.
Subclass:
170.3
This subclass is indented under subclass 170.1. Apparatus
having means apart from the mixture handling means for
treating or disposing of the froth while it remains in the
frothy state either by discharging said froth, by extracting
liquid from it, or by storing or retaining it in a separate
chamber.
(1) Note. Structures involving foam control within the
meaning of subclass 170.1 have been placed in this subclass
where the claimed structure includes a passageway for the
discharge of foam on the basis of the applicant's disclosure
that foam is so discharged rather than gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
170.4 for similar structures where only liberated gas is
separately handled.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, 155 for degasifying means
for liquid, per se.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 115 for processes of or compositions for or
subcombination compositions for the breaking of or inhibiting
of foam colloid systems, when generically claimed or when
there is no hierarchically superior provision in the USPC for
the specifically claimed art.
Subclass:
170.4
This subclass is indented under subclass 170.1. Apparatus
wherein the means for preserving or modifying the pressure of
the gas includes an enclosed vessel through which such fluids
pass and in which they are retained for a time.
SEE OR SEARCH THIS CLASS, SUBCLASS:
571 for plural tanks or compartments, including traps,
connected for serial flow.
613 for single flow path devices with serial valves which
may comprise alternately seated inlet and outlet valves.
SEE OR SEARCH CLASS:
222, Dispensing, 424.5 for dispensers including stationary
trap chambers, and especially subclass 442 for such
arrangements in which a vent is provided for the trap
chamber. See also Class 222, Class Definition, "Stationary
Traps," for a discussion of the disposition of stationary
trap chamber structures and for a listing of other classes
containing similar structures.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 115 for processes of or compositions for or
subcombination compositions for the breaking of or inhibiting
of foam colloid systems, when generically claimed or when
there is no hierarchically superior provision in the USPC for
the specifically claimed art.
Subclass:
170.5
This subclass is indented under subclass 170.4. Apparatus
having means associated with the vessel for withdrawing
evolved gas from the mixture and means whereby some or all of
such evolved gas may be returned to the mixture for
reentrainment therein before being discharged by the
apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, appropriate subclasses
for devices for contacting liquids and gases, generally.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 115 for processes of or compositions for or
subcombination compositions for the breaking of or inhibiting
of foam colloid systems, when generically claimed or when
there is no hierarchically superior provision in the USPC for
the specifically claimed art.
Subclass:
170.6
This subclass is indented under subclass 170.4. Apparatus
having conduits or passages so connecting portions of the
apparatus that the mixture may be directed to a point of
discharge without passing through the vessel so that it is
possible to discharge either material which has been held or
treated in the vessel, material which has not been so
treated, or a desired combination of such materials.
SEE OR SEARCH THIS CLASS, SUBCLASS:
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 318 for dispensers having means to
by-pass or to otherwise return the material to the source.
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or
Inhibiting, 115 for processes of or compositions for or
subcombination compositions for the breaking of or inhibiting
of foam colloid systems, when generically claimed or when
there is no hierarchically superior provision in the USPC for
the specifically claimed art.
Subclass:
171
This subclass is indented under subclass 154. Apparatus
which separates and provides for the removal of one or more
of the diverse fluids from the system.
(1) Note. The material may be collected in an auxiliary
chamber or trap prior to discharge, or it may be vented
directly through a controlled or restricted outlet in the
system. In either case, a given discharge means is intended
to relieve the system of one fluid but not others.
(2) Note. Mere vents for gas in diverse fluid containing
pressure systems are found in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
213 for venting gas from the supply stored over or used to
displace a liquid.
312 for collection of external condensate or drip.
SEE OR SEARCH CLASS:
34, Drying and Gas or Vapor Contact With Solids, subclass 125
for liquid removal devices for steam drying apparatus.
96, Gas Separation: Apparatus, for apparatus for gas
separation, per se, particularly 155 for degasifying means
for liquid, per se.
210, Liquid Purification or Separation, appropriate
subclasses for separation of liquids from liquids or solids.
236, Automatic Temperature and Humidity Regulation,
appropriate subclasses, especially subclass 41 and 53-60 for
thermally operated or responsive traps or vents in fluid
handling system for automatic temperature regulation.
Subclass:
172
This subclass is indented under subclass 171. Separating
traps wherein the diverse fluids are liquids of different
specific gravity.
(1) Note. Systems containing diverse fluids which are
liquids will be found in subclass 154 of this group where
discrimination is not involved.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 513 for liquid
separating decanters, and see the search notes thereunder.
222, Dispensing, subclass 62 and 395 for dispensers having a
liquid pressure fluid for displacing the material to be
dispensed.
Subclass:
173
This subclass is indented under subclass 171. Separating
traps which are provided with plural discriminating outlets
each of which permits outflow of one fluid and prevents
outflow of other diverse fluids.
SEE OR SEARCH CLASS:
236, Automatic Temperature and Humidity Regulation, subclass
53 for traps having a float controlled liquid outlet and a
thermostatic air valve.
Subclass:
174
This subclass is indented under subclass 173. Separating
traps wherein the outlets are valve controlled and the valves
have a common actuator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
595 for systems having a plural noncommunicating flow paths
with a common valve operator.
601.01-601.12, for systems dividing into parallel flow lines
then recombining including valves having a common operator
therefor.
607 for systems having a multiple inlet with a single
outlet, a flow control valve in each inlet, and a common
valve operator.
862-871, for systems having a flow control means for
branched passages and a common valve operator.
Subclass:
175
This subclass is indented under subclass 173. Separating
traps wherein one of the discriminating outlets is a
restricted gas bleed, which by its small size acts or tends
to act as a discriminating gas outlet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
179 for a discriminating liquid outlet with a
nondiscriminating gas vent in a diverse fluid containing
pressure system.
583 for distribution systems having a gas vent and at least
one other flow passage, and see the search notes to
subclasses 583 and 587.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 117 for valves
having a restrictor in parallel flow relation thereto, and
subclasses 118+ for valves combined with material guides or
restrictors, and see the search notes to subclass 118.
Subclass:
176
This subclass is indented under subclass 175. Separating
traps wherein the gas bleed has its inlet above the normal
maximum liquid level in the trap chamber.
Subclass:
177
This subclass is indented under subclass 171. Separating
traps wherein the separating trap is provided with a
discriminating outlet which permits outflow of liquid but
prevents outflow of gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
159 for traps having discriminating liquid outlets, the
liquid in the trap controlling gas pressure application to
the trap for discharging the liquid.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 66 for empty container cut-offs
for dispensers.
236, Automatic Temperature and Humidity Regulation,
subclasses 53-60 for temperature responsive liquid
separating traps.
Subclass:
178
This subclass is indented under subclass 177. Separating
traps further provided with a valve controlling a trap
chamber inlet which is operated alternately with the outlet
valve.
(1) Note. See the main class definition, Lines With Other
Classes and Within This Class, Plural Valves, and also
Subclass References to the Current Class, for search notes on
plural valves in fluid handling systems.
SEE OR SEARCH THIS CLASS, SUBCLASS:
596 for distribution systems having alternately seated stop
and waste valves, and see the search notes thereto.
602 627.5 and 861+, for other alternately seated valves.
SEE OR SEARCH CLASS:
222, Dispensing, 425, especially subclasses 445+ and 450+ for
dispensers with stationary traps and cut-offs for inlet and
outlet, which are ordinarily alternately seated.
Subclass:
179
This subclass is indented under subclass 177. Separating
traps provided with a nondiscriminating gas vent, an
additional nondiscriminating liquid outlet or an additional
control of the discriminating liquid outlet, the additional
control being such as to give a nondiscriminating action to
the discriminating outlet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
175 for plural discriminating outlet trap devices in which
one outlet is a choked or restricted passage gas bleed.
583 for distribution systems with plural openings, one of
which is a gas vent, and see the search notes to subclasses
583 and 587.
Subclass:
180
This subclass is indented under subclass 179. Separating
traps wherein the additional liquid outlet or additional
control of the liquid outlet responds to a system pressure
either above or below the normal operating pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
493 for line condition change responsive valves operated by
flow in either direction, i.e., high or low pressures on
either side.
Subclass:
181
This subclass is indented under subclass 179. Separating
traps wherein the nondiscriminating fluid discharge is
manually controlled.
(1) Note. See the class definition, Lines With Other
Classes and Within This Class, (3) Manual Control, Resetting,
etc., and also Subclass References to the Current Class, for
search notes on manual valve actuation in this and related
classes.
Subclass:
182
This subclass is indented under subclass 177. Separating
traps further provided with a nondiscriminating valve in the
trap inlet or a valve providing a by-pass of the trap.
SEE OR SEARCH THIS CLASS, SUBCLASS:
597 and 602+, for distribution systems having multiple
inlets with multiple and single outlets respectively, and see
the search notes to subclass 602.
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
Subclass:
183
This subclass is indented under subclass 177. Separating
traps wherein the discrimination is obtained by an outlet
valve which is responsive to a fluid condition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
455 for line condition change responsive valves of the
safety cut-off, pop, pressure regulating, safety or check
types, and see the notes to subclass 455 for search notes on
condition responsive valves in this and related classes.
SEE OR SEARCH CLASS:
236, Automatic Temperature and Humidity Regulation,
subclasses 53-60 for temperature responsive liquid
separating traps in devices for automatic temperature
regulation.
Subclass:
184
This subclass is indented under subclass 183. Separating
traps having a plurality of successively opened liquid outlet
valves.
(1) Note. See the class definition,Lines With Other Classes
and Within This Class, Plural Valves, and also Subclass
References to the Current Class, for search notes on plural
valves in this and related classes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
628 for sequentially progressive actuation of plural valves
to opening or closing position, and see the search notes to
subclass 628.
861 for distribution systems having plural valved branches,
and see the search notes to subclass 861.
Subclass:
185
This subclass is indented under subclass 183. Separating
traps wherein the valve closes in response to the collection
of gas in an open-bottom float.
SEE OR SEARCH THIS CLASS, SUBCLASS:
409 for float operated valves, and see the search notes to
subclass 409.
Subclass:
186
This subclass is indented under subclass 185. Separating
traps wherein the float is located downstream from the
valve.
Subclass:
187
This subclass is indented under subclass 183. Separating
traps wherein the valve is controlled by the level of liquid
in the trap.
SEE OR SEARCH THIS CLASS, SUBCLASS:
159 for liquid level control of gas pressure discharge type
feed-traps.
386 for liquid level responsive valves for other and general
uses, and see the search notes to subclass 386.
SEE OR SEARCH CLASS:
222, Dispensing, 64 for dispensers controlled by material
level.
Subclass:
188
This subclass is indented under subclass 187. Separating
traps wherein the valve is responsive to the weight or
pressure of accumulated liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
403 for control devices responsive to the weight of
accumulated liquid, and see the search notes to subclass
403.
Subclass:
189
This subclass is indented under subclass 188. Separating
traps wherein liquid accumulates in a vessel which lowers in
response to the weight of the liquid which lowering controls
the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
161 and 162+, for similar subject matter with a control for
applying gas pressure to the trap to force the discharge
thereof as to a boiler.
408 for gravitating tank devices responsive to and
controlling liquid level, and see the search notes thereto.
Subclass:
190
This subclass is indented under subclass 189. Separating
traps wherein the vessel is an open-topped float which floats
in liquid and sinks when filled with liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
404 for liquid level responsive or maintaining systems
controlled by a sinking or bucket type float, and see the
search notes thereto.
Subclass:
191
This subclass is indented under subclass 190. Separating
traps wherein the float operates a servo-mechanism or pilot
valve controlled device which in turn operates the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
195 for servo control with level responsive means of the
float type in these devices.
412 for servo relay operation of control in float controlled
valves.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 25 for fluid pressure type
servo-motors for valve actuation, and see the search notes to
subclass 25 and subclasses 129+ for electrical actuators for
valves.
Subclass:
192
This subclass is indented under subclass 187. Separating
traps wherein the level responsive means is a float.
SEE OR SEARCH THIS CLASS, SUBCLASS:
386 for liquid level responsive or maintaining systems,
especially 409+ for float controlled valves, and see the
search notes to subclasses 386 and 409.
SEE OR SEARCH CLASS:
222, Dispensing, 67 for float operated flow controllers in
dispensers.
Subclass:
193
This subclass is indented under subclass 192. Separating
traps wherein the trap chamber is provided with an inlet for
gas and liquid, a discriminating outlet for liquid and a
nondiscriminating outlet for the main flow of the gas to a
gas distribution system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
173 for devices having a gas and liquid inlet and
discriminating outlets for both fluids.
179 for devices having a discriminating outlet for liquid
and a nondiscriminating vent for gases, i.e., one which does
not discharge the main flow of the material being handled.
Subclass:
194
This subclass is indented under subclass 192. Separating
traps wherein the discriminating liquid outlet pipe rises
above the normal liquid level in the trap chamber, thus
requiring the gas pressure in the chamber to discharge the
liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
206 for diverse fluid containing pressure systems in which
gas is used as a liquid displacing means, and see the search
notes to subclass 206.
590 for distribution systems having internally extending
pipes, and see the search notes to subclass 590.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 373 for fluid pressure discharge
of material from a dispenser trap.
Subclass:
195
This subclass is indented under subclass 192. Separating
traps wherein the liquid outlet valve is controlled by a
servo mechanism or pilot valve operated means which is in
turn controlled by the float.
SEE OR SEARCH THIS CLASS, SUBCLASS:
191 for similar devices in which the level responsive means
responds to weight or pressure of the accumulated fluid, and
see the search notes thereto.
SEE OR SEARCH CLASS:
236, Automatic Temperature and Humidity Regulation, subclass
55 for a float controlled pilot with a thermostatically
controlled trap in automatic temperature regulation devices.
251, Valves and Valve Actuation, 25 for fluid pressure
servo-motors for valve actuation, and see the search notes to
subclass 25.
Subclass:
196
This subclass is indented under subclass 192. Separating
traps wherein a plurality of coacting liquid outlet valves
are arranged to act in opposition or a single outlet valve is
provided with opposed surfaces to cancel out the effect of
internal pressure on the valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 281 for balanced valves of
general utility and see the search notes thereto.
Subclass:
197
This subclass is indented under subclass 171. Separating
traps wherein the trap is provided with an outlet through
which outflow of a gas is permitted but outflow of a liquid
or diverse gas therethrough is prevented.
SEE OR SEARCH THIS CLASS, SUBCLASS:
173 for diverse fluid containing pressure systems having
plural discriminating outlets or vents.
175 for traps having a choke or restricted gas bleed.
213 for liquid level responsive gas vents for boilers or
other gas pressure over liquid devices which may also be
utilized as safety or warning devices or whistles.
386 for liquid level responsive or maintaining devices
involving hygroscopic means.
388 for liquid excluding devices for gas inlets or outlets
in systems which are not diverse fluid containing pressure
systems.
583 for distribution systems having plural passages, one of
which is a gas vent, and see the search notes to subclasses
583 and 587.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, for apparatus for gas
separation, per se, particularly 155 for degasifying means
for liquid, per se.
222, Dispensing, subclass 69 for float operated controllers
for dispensing container vents.
Subclass:
198
This subclass is indented under subclass 197. Separating
traps further provided with a pressure responsive valve in
the gas outlet which prevents reverse flow or regulates the
system gas pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
455 for line condition change responsive valves, especially
subclass 496 for those having separate reactor surface and
closing in response to reverse flow, subclass 505 for the
pressure regulating type, and subclasses 511+ for check
valves, especially subclasses 517+ for those biased open.
Subclass:
199
This subclass is indented under subclass 197. Separating
traps wherein the discrimination is obtained by an outlet
valve which is responsive to a fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
183 for fluid responsive valves comprising discriminating
outlets for liquids.
455 for line condition change responsive valves of general
types, and see the search notes to subclass 455.
Subclass:
200
This subclass is indented under subclass 199. Separating
traps wherein the valve or an additional device functions to
stop normally liquid fluid which is vaporized, such as steam,
in the system.
Subclass:
201
This subclass is indented under subclass 200. Separating
traps wherein a separate return path is provided from the
trap to the system for condensed vapor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
156 for devices of this type where the condensed vapor is
returned to a boiler or other receivers under higher
pressure.
Subclass:
202
This subclass is indented under subclass 199. Separating
traps wherein the valve is responsive to a float member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
192 for devices of this type which are discriminating for
liquids.
409 for float controlled valves, and see the search notes to
subclass 409.
Subclass:
203
This subclass is indented under subclass 171. Separating
traps wherein the provision for removal of a fluid from the
system is a nondiscriminating liquid outlet.
(1) Note. Nondiscriminating outlets for gas in systems of
this type have been placed in the subclass under which this
subclass is indented.
SEE OR SEARCH THIS CLASS, SUBCLASS:
179 for systems of this type having both discriminating and
nondiscriminating outlets for liquid.
861 for distribution systems having plural valved outlets,
and see the search notes to subclass 861.
Subclass:
204
This subclass is indented under subclass 203. Separating
traps wherein the outlet empties the system of liquid of its
own volition, as when the system pressure is removed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
183 and 199+, for fluid responsive valves in diverse fluid
containing pressure systems.
396 for self-emptying tanks which are level responsive.
Subclass:
205
This subclass is indented under subclass 154. Apparatus
providing means whereby a container may be filled with a
liquid by evacuating the container either prior to or
simultaneously with the liquid filling.
SEE OR SEARCH THIS CLASS, SUBCLASS:
130 for siphon systems with discharge controlling receiver.
571 for distribution systems comprising plural tanks
connected for series flow.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, 59 for filling devices in which a separable
receiver is placed under vacuum for filling.
166, Wells, subclass 165 and the subclasses there noted for
receptacles used in wells and filled by liquid because the
receptacle has been evacuated or is filled with air at a
pressure lower than the surrounding liquid.
417, Pumps, 118 and particularly subclasses 148+ for means
for pumping a liquid by exhausting a gaseous motive fluid
from the liquid pump chamber.
Subclass:
205.5
This subclass is indented under subclass 154. Apparatus
including a shunt line having a reservoir therein containing
a fluid diverse from that in the main line and wherein the
reservoir material is fed into the main line, without mixing
with main line material in the reservoir, by main line flow
into the shunt due to differential pressure along the main
line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
268 for means to entrain a solid material into a fluid
handling system and see the search notes thereunder.
564.5 for a line responsive follower type feeder in a shunt
line.
Subclass:
206
This subclass is indented under subclass 154. Apparatus
wherein a gas under pressure is provided over a body of
liquid or is utilized to displace a liquid and a definite
coaction exists between the gas and liquid which affects the
system.
(1) Note. The usual purpose for mere storage of gas over
liquid is for an air cushion or surge eliminating means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
145 for application of pressure to liquid in a siphon
chamber to initiate a flow through a siphon connected
thereto.
156 for liquid feed traps utilizing a gas pressure for
discharge.
170.1 for diverse fluid containing pressure systems in which
the fluids are in the form of a liquid impregnated with gas
and there are means for controlling the degree of froth or
foam formed in the handling of such fluids.
SEE OR SEARCH CLASS:
222, Dispensing, 61, 258, 261 to 263 and 396+ for dispensers
with fluid pressure discharge assistants.
417, Pumps, 118 for liquid pumping by supplying or
exhausting gaseous motive fluid to or from a liquid pumping
chamber.
Subclass:
207
This subclass is indented under subclass 206. Apparatus
wherein the gas is trapped in a dome over a liquid from a
liquid distribution system to suppress or absorb pressure
surges in the liquid system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
568 and 593, for surge chambers for distribution systems in
which a head of liquid supplies the cushion or bias in the
system. The chamber may be closed, but air pressure is not
relied on for surge suppression.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, 26 for pressure
compensators for pipes and tubular conduits.
417, Pumps, 543 for expansible chamber type pumps having a
pulsation damping means of the direct contact compressible
fluid type.
Subclass:
207.5
This subclass is indented under subclass 206. Apparatus in
which the liquid in one part of the system is allowed to flow
back, is forced back, or is by-passed back to the source of
supply, in order to empty the system for cleaning, storage,
etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
239 for fluid handling systems of general application having
means for reversing the normal direction of flow of the fluid
for assisting in the cleaning of such systems.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 318 for dispensing devices
embodying discharge assisting means and having a bypass or
return to supply.
Subclass:
208
This subclass is indented under subclass 206. Apparatus
wherein a plurality of similarly functioning gas pressure
over liquid units are provided.
SEE OR SEARCH THIS CLASS, SUBCLASS:
255 for fluid handling systems comprising plural tanks with
parallel outflow, and see the search notes to subclass 225.
Subclass:
209
This subclass is indented under subclass 206. Apparatus
wherein means are provided to maintain or apply the gas
pressure over or to the liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
145 and 147+, for pressure fluid supply for starting
siphons.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, subclass 19 for puncturing gas pressure
reservoirs for filling dispensers.
222, Dispensing, subclass 209 for resilient wall fluid
pressure generating pump or pulsator for dispensers,
subclasses 399 for gas pressure supplying reservoirs and 401+
for container mounted fluid pressure generating pump or
pulsator.
Subclass:
210
This subclass is indented under subclass 209. Apparatus in
which the gas is derived from a liquid not necessarily the
liquid over which the gas acts.
SEE OR SEARCH CLASS:
62, Refrigeration, 45.1 for process and apparatus for
handling liquefied gas as a commodity including steps or
means involving pressure or temperature control special to
liquefied gas and more than required for other liquids under
gas pressure.
Subclass:
211
This subclass is indented under subclass 210. Apparatus with
a device to add or inject gas into the liquid of the system
to replenish the gas over the liquid.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, appropriate subclasses
for carbonators, per se.
Subclass:
211.5
This subclass is indented under subclass 209. Apparatus
including means to apply gas pressure over the liquid said
means utilizing the pressure of flow of the liquid to apply
the gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
211 for gas injectors utilizing the pressure or flow of the
liquid in which the gas is carried into the storage tank by
the liquid.
Subclass:
212
This subclass is indented under subclass 209. Apparatus
wherein the gas pressure inlet and liquid outlet have a
common mounting adapted for manipulation as a unit for
positioning or removal from a gas and liquid container.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317 for devices for tapping a container under pressure which
frequently comprise the liquid outlet subcombination of the
subject matter under this definition.
594 and 625.18+, for fluid distribution systems including
noncommunicating flow paths where one flow path may be for
gas and the other for liquid.
SEE OR SEARCH CLASS:
222, Dispensing, 394 for dispensers having fluid pressure
discharge assistants, especially subclass 399 for those
having a gas reservoir and subclasses 401+ for those having a
pressure generating pump mounted on the supply container, and
see the search notes to subclass 394.
Subclass:
213
This subclass is indented under subclass 206. Apparatus
wherein a gas vent or whistle is opened in response to a
predetermined liquid level.
(1) Note. An example of such apparatus is a low water level
steam exhaust and signal for a boiler.
SEE OR SEARCH THIS CLASS, SUBCLASS:
197 for discriminating gas outlets or vents which may be
liquid level responsive.
386 for liquid level responsive or maintaining systems.
558 for liquid level indicators involving release of a
separate gas for their operation, or of internal gas pressure
when gas is the only fluid in the system. The use of
whistles with gas exhaust devices as found in diverse fluid
containing pressure systems is so common in the art that no
cross reference is made of patents involving such subject
matter to subclass 558. The search note under subclass 558
directs that search be made in subclasses 213+.
SEE OR SEARCH CLASS:
116, Signals and Indicators, 137 for whistles, per se.
222, Dispensing, subclass 39 for audible signals for
dispensers and subclass 69 for float controlled vents for
dispensers.
446, Amusement Device: Toys, 204 for a sounding toy
comprising a whistle.
Subclass:
214
This subclass is indented under subclass 213. Apparatus
wherein the gas vent or whistle is opened in response to a
high and low liquid level.
SEE OR SEARCH THIS CLASS, SUBCLASS:
391 for liquid level control of both inflow and outflow in a
tank.
Subclass:
215
This subclass is indented under the class definition.
Apparatus which stop reverse flow of a liquid in a
distribution system by preventing or eliminating the vacuum
condition which would cause the reverse flow, such as a
condition which would start siphoning.
(1) Note. The normal flow in these systems is not of the
siphon type.
SEE OR SEARCH THIS CLASS, SUBCLASS:
143 for breakers in flow devices which are intended to act
as siphons.
441 for refill pipes which may act as vacuum breakers.
526 for vacuum relief valves, per se.
583 for distribution systems having plural openings, one of
which is a gas vent, and see the search notes to subclasses
583 and 587.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 34 for reverse
flow prevention in choked pressure type servo motors which
actuate valves.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
Subclass:
216
This subclass is indented under subclass 215. Apparatus
wherein the back flow is prevented by an air vent or gap in
the liquid flow line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
143 for vent type breakers in flow devices which are
intended to act as siphons.
583 for distribution systems having plural flow passages,
one of which is a gas vent, and see the search notes to
subclasses 583 and 587.
Subclass:
216.1
This subclass is indented under subclass 216. Apparatus
including a liquid seal means in the liquid flow line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247 for liquid seals.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, subclass 211, 218
and 219 for ventilation of house plumbing or sewers.
Subclass:
216.2
This subclass is indented under subclass 216.1. Subject
matter including an automatic valve in the vent line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
217 for valved vents without a liquid seal means.
Subclass:
217
This subclass is indented under subclass 216. Apparatus
wherein the air vent is provided with a valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
216.2 for valved vents in a flow line of the instant type
including a liquid seal.
526 for vacuum relief valves, per se.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, subclass 426 for
vented siphon bowls.
Subclass:
218
This subclass is indented under subclass 217. Apparatus
wherein a valve is provided in the liquid flow path which
operates in conjunction with the air vent valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
861 for distribution systems having plural valved flow
paths, and see the search notes to subclass 861.
Subclass:
219
This subclass is indented under the class definition. Flow
control devices comprising a flow line having a contracted
portion, a valve seat adjacent said contracted portion and an
internal coaxial valve part comprising telescoping members,
one of which is a movable needle or valve head which engages
said seat.
(1) Note. These valves are commonly known as Johnson or
Larner-Johnson valves, and are used principally in water
conduits providing for very large flow, as in dams and
hydraulic installations associated therewith.
(2) Note. In addition to one or two moving valve heads or
needles the internal part of the device comprises one or more
stationary members around which flow occurs. The stationary
members may be merely guides for the needles or they may
complete a pressure chamber arrangement in cooperation with
the movable member or members, but in either case a flow
channel must be formed around a stationary member and between
it and the wall of the flow line; i.e., the parts of the
internal device must be surrounded by flowing fluid, except
for the supports or connections between the stationary member
and the wall.
(3) Note. The contracted portion of the flow line
constitutes a region of relatively low fluid pressure, and
the usual streamlining of the needle or stationary part, or
both, provides a balanced or easily controlled valve suitable
for controlling large flows.
(4) Note. The inner valve element frequently comprises a
closed top-shaped body having fluid pressure chambers
therein, but may comprise annular members having annular
chambers therebetween, or less streamlined forms. In any
form the valve head always lies in an enlarged portion of the
flow line.
(5) Note. The valve may be operated (1) by fluid pressure
derived either from the line or from an external source, the
expansible chambers comprising (a) the telescoping valve body
(b) a separate motor within the valve body or (c) a
mechanical movement connected fluid pressure motor external
to the line, (2) by mechanical movement or electric motor
means either within or outside of the flow line; or (3) by
combinations of fluid pressure operating means and nonfluid
operated means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
455 for line condition responsive valves of other types.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, appropriate subclasses for
valves and valve actuation generally, especially 12 for
fluid actuated or retarded valves of other types, and
subclasses 123+ for combined valves and restrictors in which
the valve is located at the point of greatest restriction in
the line.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
Subclass:
220
This subclass is indented under subclass 219. Flow control
devices in which the valve is actuated in response to a
change in condition of the fluid handled.
(1) Note. Such devices as pressure regulators and excess or
reverse flow responsive valves, and combinations of the above
with each other or with manual or other external controls,
are included.
SEE OR SEARCH THIS CLASS, SUBCLASS:
455 for line condition responsive valves of other types,
especially subclasses 485+ for pilot or servo-controlled
condition change responsive valves.
Subclass:
221
This subclass is indented under subclass 219. Flow control
devices in which a controlled motor device comprising a pilot
operated or servo-mechanism is involved, the motor device and
its pilot or control valve being located within the internal
part of the valve, i.e., the part comprising the telescoping
support and the needle or movable valve head lying within the
flow passage.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 25 for valve actuation
involving fluid type pilot or servo type motors, and see the
search notes to subclass 25.
Subclass:
222
This subclass is indented under subclass 221. Flow control
devices in which the pilot valve controls a passage through
the needle or movable part of the valve means internal to the
flow line.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 38 for choked pressure type
servo motors for valve actuation in which the pilot valve is
seated in the motor or valve element.
Subclass:
223
This subclass is indented under the class definition.
Apparatus comprising valved inflation stems of the type
attached to pneumatic tires and analogous inflatable
articles, including filling and/or relief extensions of such
stems, valved filling chucks or the type attached to pressure
fluid supplying conduits and employed to inflate such
articles by means of the inflation stems, and combinations of
such inflation stems and filling chucks.
(1) Note. Relief and filling extensions to be attached to
inflation stems have means to hold open the valve normally
present in such stems.
(2) Note. The claiming of a source of supply of inflating
fluid by name only does not exclude patents otherwise
classifiable herein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
320 for means comprising a tap or other attachable flow
conduit which can be applied to a container under pressure to
open a valve therein for transfer of fluids.
455 for line condition change responsive valves, e.g.,
safety and check valves.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, subclasses 89.1-89.4 for
inflation stem closures and caps.
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, subclass 4 for methods of charging separable
receivers with gas, subclass 38 for filling apparatus for
filling tires with gas and liquid, and appropriate subclasses
for charging tires with gas, comprising in addition to the
chuck and/or stem a significantly claimed source of supply,
means for holding or supporting the tire or other Class 141
feature.
152, Resilient Tires and Wheels, 415 for tire inflating
devices combined with vehicle or wheel structure.
222, Dispensing, 3 for gas dispensers.
Subclass:
224
This subclass is indented under subclass 223. Apparatus
having fluid pressure responsive means permanently associated
therewith for controlling the pressure therein or in the
inflatable article during the inflating operation or while
the inflatable article is in use.
(1) Note. If the pressure responsive control device is
associated with the stem and controls the article in use, it
does not interfere with the inflation operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
230 for relief valves adapted to be mounted on the end of a
conventional inflation stem, and not having a filling
passage. See (1) Note.
494 particularly subclasses 505+ and 511+ for pressure
regulators and relief valves of general utility with and
without separate reactor surfaces, respectively.
Subclass:
224.5
This subclass is indented under subclass 224. Devices
wherein the fluid is dispensed in successive charges until
the predetermined pressure is reached.
Subclass:
225
This subclass is indented under subclass 224. Apparatus
having a diaphragm, bellows or expansible tube as the
pressure responsive means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
510 for relief valves of general utility closing in the
direction of fluid flow and having a reactor surface
comprising flexible diaphragm or bellows.
777 for expansible chamber devices, per se, and see the
notes to subclass 777.
793 for diaphragms and bellows, per se, and see the notes to
subclass 793.
Subclass:
226
This subclass is indented under subclass 224. Apparatus
having inflation and relief valves on a common axis.
(1) Note. See the class definition, Section 4 for search
notes on plural valves in this and related classes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
228 and 230, for other relief valves associated with
inflation stems.
493 for line condition responsive valves of the
bi-directional type, including plural valves of which one may
relieve high pressure and another relieve vacuum or reverse
pressure.
505.11 for combined pressure regulators and relief valves of
general utility.
512.2 614.16+, 630+, and 637.2+, for other valves mounted on
a common axis.
Subclass:
227
This subclass is indented under subclass 223. Apparatus
having a fluid pressure gauge or indicator combined
therewith.
SEE OR SEARCH THIS CLASS, SUBCLASS:
224 for inflation devices having fluid pressure responsive
pressure control means in association with a fluid pressure
gauge or indicator or wherein the pressure responsive means
is also a gauge or indicator or part thereof.
557 for combinations of fluid delivery systems other than
inflatable article filling chucks or stems with fluid
pressure responsive gauges or indicators.
524 for check and safety valves having means to adjust and
indicate the setting of the biasing means.
SEE OR SEARCH CLASS:
73, Measuring and Testing, 146.2 for fluid pressure gauges
connected to a tire value stem and mounted on the stem or a
vehicle carrying the stem and subclasses 700+ for fluid
pressure gauges, per se.
116, Signals and Indicators, subclass 34 for signals,
indicators and alarms for indicating when tire pressure is
different from a desired valve.
Subclass:
228
This subclass is indented under subclass 227. Apparatus
having means for releasing fluid from the article being
inflated while the gauge or indicator remains combined with
the filling chuck and/or stem.
SEE OR SEARCH THIS CLASS, SUBCLASS:
230 for stem attached relief valves.
511 for relief valves of general utility in which the
pressure fluid acts directly on the valve head, without
separate reactor surfaces.
Subclass:
229
This subclass is indented under subclass 227. Apparatus
having means whereby the gauge or indicator may be
selectively placed in or out of communication with the
filling passage of the chuck or stem.
Subclass:
230
This subclass is indented under subclass 223. Valved devices
which are adapted to be mounted in the end of a conventional
pneumatic tire inflation stem to relieve excess pressure.
(1) Note. These valves each include a projection which
holds the conventional valve open when it is in place.
(2) Note. Since these valves do not include an inflow
passage, they must be removed during inflation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
224 for tire pressure relief valves integral with tire
inflating stems and/or chucks, and intended to remain in
place during inflation. See (2) Note.
320 for tapping connections to valved containers which are
under pressure, the connection comprising or carrying means
for opening the valve after or during the connecting
operation.
494 and 511+, for relief valves with and without separate
reactor surfaces, respectively some of which are disclosed
for use with inflatable articles.
Subclass:
231
This subclass is indented under subclass 223. Apparatus
having significant structure for connecting a filling chuck
to an inflation stem, or an inflation stem to a second
inflation stem or filling tube, the second stem or tube
usually being permanently associated with a tire.
(1) Note. The mere statement that a chuck or stem is screw
threaded or flanged for coupling is not regarded as
significant coupling structure for this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
614.02 and 614.05, for a valve operated by coupling motion
of the flow path sections.
798 for nonvalved couplings joining two or more flow lines
in fluid connecting relation, and see the search notes to
subclass 798.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, 383 for couplings between a separable
dispenser and receiver, and see the search notes to subclass
223 of this class (137).
251, Valves and Valve Actuation, 142 for a valve associated
with a flow path, particularly subclasses 149+ wherein the
valve is operated by the act of joining flow path sections.
Subclass:
232
This subclass is indented under subclass 223. Apparatus,
usually of the inflation stem type, having a cap or closure
for protecting and/or sealing the end thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
800 for closures associated with devices of this class, and
see the search notes thereto.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, appropriate subclasses,
for closures of the type provided for, and see the search
notes thereto in section IV for the loci of closures in other
classes.
138, Pipes and Tubular Conduits, subclasses 89.1-89.4 for
inflation stem type closures and plugs.
Subclass:
233
This subclass is indented under subclass 232. Apparatus in
which the cap is provided with means for actuating, locking
in place, or assembling a valve located in an inflation
stem.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.01-329.4, for a fluid handling system with repair,
tapping, or assembly means.
613 for a flow path with serial valves and/or closures.
SEE OR SEARCH CLASS:
152, Resilient Tires and Wheels, subclass 431 for combined
valve stem caps and tools, the tool usually being employed to
manipulate a valve in the stem.
Subclass:
234
This subclass is indented under subclass 233. Apparatus in
which the valve which is actuated, locked or assembled is
seated by manual manipulation.
(1) Note. The valve may also be provided with biasing means
tending to seat it.
Subclass:
234.5
This subclass is indented under subclass 223. Devices
comprising one or more valve heads and their cooperating
seats formed in a sleeve or similar structural unit which is
removable as such from a tire stem.
SEE OR SEARCH THIS CLASS, SUBCLASS:
283 and 454.2+, for similar structure removable from other
fluid handling devices.
Subclass:
234.6
This subclass is indented under the class definition. Fluid
handling system combined with means for supporting, guiding
or confining a vehicle relative to fluid handling means which
supples a fluid to the vehicle, e.g., lubricant or fuel.
(1) Note. Included in this subclass are a fluid system
which services vehicles, which system has a defined
relationship to an area or body of land or water or a vehicle
support or guide even though a nozzle or metering device such
as those used in a Class 141, 222 or 239 system is defined.
SEE OR SEARCH THIS CLASS, SUBCLASS:
236 for other fluid handling systems involving geos:graphic
features.
SEE OR SEARCH CLASS:
52, Static Structures (e.g., Buildings), 169.1 for a
building defined as having a specific relationship to the
adjacent terrain, and subclass 174 for a static structure,
combined with a defined traffic confining or directing
feature wherein no fluid handling feature is defined.
62, Refrigeration, subclass 260 for such apparatus related
to the terrain.
184, Lubrication, particularly subclass 1.5 for an
automobile gear and crank case system having means
specifically related to the crank case.
210, Liquid Purification or Separation, subclass 170 for
such a system having defined features related to the
terrain.
222, Dispensing, for a dispensing device with a casing or
support not related to a guide or support for a vehicle being
serviced.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
Subclass:
236.1
DISTRIBUTION SYSTEMS INVOLVING GEOGRAPHIC FEATURES:
This subclass is indented under the class definition. Fluid
handling systems including or specifically related to a
particular geos:graphic feature, e.g., a hill, river, ocean
shore, city street, etc.
(1) Note. Mere location of a fluid handling system or a
portion thereof below the surface of the ground is not
sufficient for inclusion in this subclass.
(2) Note. The geos:graphic feature may be either natural or
artificial, but must be a clearly defined area on or below
the surface of the earth.
SEE OR SEARCH THIS CLASS, SUBCLASS:
272 for hydrant type devices including water cranes, which
usually have a connection to a water main and a valve located
below the surface of the ground. See (1) Note, above.
363 for casings for fluent material handling devices which
separate the device from the ground and support the adjacent
earth, as valve and meter wells and pipe line housings. See
(1) Note, above.
SEE OR SEARCH CLASS:
239, Fluid Sprinkling, Spraying, and Diffusing, 201 for
ground or floor embedded sprinkler systems.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
Subclass:
237
This subclass is indented under the class definition. Fluid
handling systems having (1) devices to render the system or
parts thereof free from undesirable material, or (2) devices
for lubricating the system or parts thereof by adding a
lubricating medium to the stream of fluent material carried
by the system or (3) devices for preventing leakage between
the valve and a solid valve seat by introducing a liquid
between the valve and its seat.
(1) Note. Cleaning means for this group requires the
installation of additional means or connections to treat the
apparatus, not the material being handled, or the
manipulation of the system in some special way to secure the
cleaning effect.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.01-15.26, for a process of cleaning, repairing, or
assembling.
247 for liquid valves, i.e., those having liquid seats.
544 for screens, filters, etc., for physically separating
solid or unwanted materials from the material being handled.
SEE OR SEARCH CLASS:
222, Dispensing, 148 for dispensers with installed cleaning
means.
225, Severing by Tearing or Breaking, 12 for installed beer
pipe cleaners.
251, Valves and Valve Actuation, subclass 355 for
lubrication of actuators or parts of a valve in which the
lubricant does not enter the flow path.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
Subclass:
238
This subclass is indented under subclass 237. Systems
containing a means other than those causing or controlling
the normal or unmodified flow of the fluent material of the
system for removing germs or other undesirable internal or
extraneous material from the system itself or parts thereof,
as distinguished from treating the material being handled to
remove undesirable material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.04-15.06, for a process of fluid cleaning a fluid handling
system.
171 for traps for separating or venting either gas or liquid
from a pressure system containing both materials.
312 for leakage or drip collecting in fluid handling
devices.
387 for washing machine cycle control involving liquid level
response or maintenance.
544 for screens, filters, sediment, traps, etc., for
removing undesired particles from the material being
handled.
SEE OR SEARCH CLASS:
8, Bleaching and Dyeing; Fluid Treatment and Chemical
Modification of Textiles and Fibers, 137 for cleaning and
laundering processes for textiles and fibers. 147+ for
manipulative fluid treatment processes for textiles and
fibers.
15, Brushing, Scrubbing, and General Cleaning, appropriate
subclasses for fluid blast or suction cleaning and mechanical
cleaning with or without the addition of liquid.
62, Refrigeration, subclass 303 for a refrigerator combined
with cleaning means.
68, Textiles: Fluid Treating Apparatus, appropriate
subclasses for fabric cleaning by liquid contact.
134, Cleaning and Liquid Contact With Solids, appropriate
subclasses for cleaning by liquid contact.
Subclass:
239
This subclass is indented under subclass 238. Systems in
which the cleaning device includes a means for causing a
fluid to flow in the reverse direction to the normal flow
path to remove undesirable material from the system or parts
thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
102 for reversing valves in supply and exhaust type
self-regulating systems, especially subclasses 103+ for the
suction pulsator type and 106 for 4-way valve systems.
207.5 for diverse fluid containing pressure systems having
means to return fluid contained in the system to the source
of supply.
249 and 309+, for reversing valves of the regenerative
furnace type.
627 for sequential distributing valves.
Subclass:
240
This subclass is indented under subclass 238. Systems in
which a separate material such as steam, air, water, valve
grinding compounds or other chemical or physical agents are
introduced into the fluent material of the system to clean
parts of the system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
255 for systems having parallel discharge from plural
tanks.
268 for systems with holders for solid, flaky or pulverized
material to be dissolved or entrained, and see the search
notes thereto.
602 for systems having plural inflows and a single outflow,
and see the search notes to subclass 602.
SEE OR SEARCH CLASS:
222, Dispensing, 129 for dispensers in which plural diverse
fluids from plural sources are discharged either separately
or together.
Subclass:
241
This subclass is indented under subclass 238. Systems in
which steam is used as a medium for cleaning germs or other
infective agents from parts of the system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
13 and 565+, for processes and systems using steam as a
propelling fluid.
334 for systems using influent gas or vapor for heating
fluid.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, 316.1 for
cleaning by gas blast only.
Subclass:
242
This subclass is indented under subclass 238. Systems in
which the undesired material is removed from the device or
system or parts thereof by the physical interaction of two or
more parts of the device or system, not including relations
or operations which are part of or necessary for flow
handling.
(1) Note. One or more of the interacting parts may be parts
present solely for cleaning purposes, or all may have utility
as flow handling means provided the two modes of operation
are present.
(2) Note. This and the first indented subclass include
disclosures relating to valve grinding only where the
assembled system is described as having a specific nonvalving
member or motion which produces valve grinding action or
where the system or part when disassembled has a specific
member that facilitates valve grinding.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.01-329.4, for a fluid handling system with repair,
tapping, or assembly means.
330 for systems having nonvalving motion of the valve or
valve seat for purposes other than cleaning or disassembling,
though the motion may prevent fouling or dislodge material
tending to settle on the valve parts.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, 104.31 for
sewer cleaners.
Subclass:
243
This subclass is indented under subclass 242. Systems in
which the fluent material system or a part thereof has means
for giving the valve or its seat a motion which produces
cleaning or grinding of the valve and/or its seat.
(1) Note. This motion must be one not contemplated or
normally occurring in the fluid controlling movement of the
valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
240 for this subject matter wherein a separate material
(e.g., grinding compound) is added at the grinding zone.
330 for other nonvalving motion of valves or valve seats.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 215 for plural motions of
mechanically actuated valves.
451, Abrading, 115 for grinding a valve on a seat by use of
plural workholders, without an abrading tool.
Subclass:
243.1
This subclass is indented under subclass 243. Devices in
which the actuator is made up of an axial rod mounted within
a sleeve.
Subclass:
243.2
This subclass is indented under subclass 243. Devices
provided with a spring which permits regrinding of the valve
head on its seat.
Subclass:
243.3
This subclass is indented under subclass 243. Devices
provided with lost motion which permits the valve to rotate
on its seat before it leaves the seat upon opening.
SEE OR SEARCH THIS CLASS, SUBCLASS:
243.2 for such connections which use a spring.
Subclass:
243.4
This subclass is indented under subclass 243. Devices in
which a normally swiveled connection between the head and
stem is blocked to cause the head to rotate on the seat as
the stem rotates.
Subclass:
243.5
This subclass is indented under subclass 243. Devices
comprising screw actuated valves in which the nut is
disconnected from the body or the stem, or both, to permit
the valve head to rotate without reciprocating.
SEE OR SEARCH THIS CLASS, SUBCLASS:
243.2 for valves in which a spring permits limited movement
between the nut and the body or stem.
Subclass:
243.6
This subclass is indented under subclass 243. Devices which
are provided with means in addition to and independent of the
normal valve actuator for imparting the grinding motion to
the valve.
Subclass:
243.7
This subclass is indented under subclass 243.6. Devices in
which the grinding means is normally removed from the valve.
Subclass:
244
This subclass is indented under subclass 242. Systems in
which the fluent material system has a member which has a
reciprocating movement to enter a restricted passage of the
system to clean either or both parts, either the member, the
passage or the movement being nonworking characteristics of
the system; i.e., not contributing to the fluid flow causing
or controlling function of the system, though the member or
passage may be carried by a working part of the system.
SEE OR SEARCH CLASS:
22, Dispensing, 149 for dispensers in which a cleaning
element enters the container outlet.
Subclass:
245
This subclass is indented under subclass 244. Systems in
which the reciprocating member cleans a branch channel.
(1) Note. The branch channel may comprise a diverting
passage for fluid to be used to operate a valve, pilot valve,
etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
Subclass:
245.5
This subclass is indented under subclass 244. Devices
wherein the means to actuate the cleaning means is
independent of the valve actuator.
Subclass:
246
This subclass is indented under subclass 237. Systems in
which a separate fluid is applied between the valve and its
seats to seal the valve against passage of the fluent
material carried by the system.
(1) Note. The sealing material may be a lubricant.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.06 for a process of cleaning using liquid on a valve or
valve seat.
247 for liquid valves and liquid trap seals.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 355 for
lubrication in which the lubricant does not enter the flow
path.
Subclass:
246.11
This subclass is indented under subclass 246. Valves wherein
plural feed means (other than gravity) are provided for the
sealing liquid to cause flow thereof.
Subclass:
246.12
This subclass is indented under subclass 246. Valves wherein
line pressure is used to feed the sealing liquid.
Subclass:
246.13
This subclass is indented under subclass 246. Valves wherein
the feed means is actuated by the valve actuator or is so
interrelated therewith that feeding of sealing liquid is
dependent on valve actuation.
Subclass:
246.14
This subclass is indented under subclass 246. Valves having
means to control or prevent the loss of sealing means to the
line flow.
Subclass:
246.15
This subclass is indented under subclass 246. Valves having
a screw means (e.g., screw fed plunger) for feeding the
fluid.
Subclass:
246.16
This subclass is indented under subclass 246.15. Valve
having check valve means in the lubrication or sealing
system.
Subclass:
246.17
This subclass is indented under subclass 246.16. Valves
having means to permit escape of the sealing liquid from its
flow system to prevent excessive pressure therein or as an
indication of complete flow therein.
Subclass:
246.18
This subclass is indented under subclass 246.16. Valves
wherein the valve is lifted from its seat to aid actuation by
the pressure of the lubricant.
Subclass:
246.19
This subclass is indented under subclass 246.15. Valves
wherein the lubrication pressure lifts the valve from its
seat.
SEE OR SEARCH THIS CLASS, SUBCLASS:
246.18 for "jacking" with a check valve in the lubrication
system.
Subclass:
246.2
This subclass is indented under subclass 246.15. Valves
wherein the lubrication pressure aids in seating of the
valve.
Subclass:
246.21
This subclass is indented under subclass 246. Valves wherein
the lubricant feed means is a spring biased piston.
Subclass:
246.22
This subclass is indented under subclass 246. Valves wherein
the sealing material is introduced into the valve under
pressure from some means such as a grease gun or oil pump.
Subclass:
246.23
This subclass is indented under subclass 246. Valves wherein
the lubricant flows by gravity or by capillarity.
Subclass:
247
This subclass is indented under the class definition.
Apparatus in which a liquid, maintained at the desired
location by some form of reservoir, is used as a seal or
closure between adjacent parts of a system containing either
a gas or a liquid which is lighter than the sealing liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
138 for periodic siphon discharge by release of trapped air
through a liquid trap seal.
154 for diverse fluid containing pressure systems,
especially subclasses 154 and 172 for those containing plural
liquids and 171+ for fluid separating traps and vents.
246 for liquid sealing at the valve interface by supplying
the sealing liquid to the flow path or directly to the valve
interface.
505.31 and 505.4, for reactor surface of the inverted cup
type having liquid seal.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, appropriate
subclasses for liquid trap seals and valves combined with the
subject matter of the class.
222, Dispensing, subclass 188 for fluid trap seals for
dispenser inlets and outlets, including vents.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
Subclass:
247.11
This subclass is indented under subclass 247. Apparatus
comprising a U-shaped flow passage which retains a portion of
a line flow liquid to provide a gas seal in the said line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
138 for periodic siphon discharge through liquid trap
seals.
171 for diverse fluid containing pressure systems with fluid
separating traps, especially subclasses 177+ for a
discriminating outlet for liquid.
216.1 for a vented siphon breaking system including a liquid
seal.
251 for seals utilizing a diverse liquid.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, appropriate
subclasses for separation apparatus comprising liquid seals,
particularly 163 for grated inlet surface drains, subclasses
295+ for grated inlet catch basins, subclasses 116 and 119
for the same with a backflow preventing float or filtrate
accumulation responsive valve, respectively, and subclasses
532.1+ for catch basins with gravitational separation.
Subclass:
247.13
This subclass is indented under subclass 247.11. Apparatus
having a valve in the liquid flow line in or adjacent to the
seal.
Subclass:
247.15
This subclass is indented under subclass 247.13. Apparatus
in which the valve is responsive to a change in the condition
of the liquid in the flow line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
386 for liquid level responsive valves where no liquid seal
is present, and particularly subclasses 409+ for float
controlled valves.
455 for other line condition change responsive valves.
Subclass:
247.17
This subclass is indented under subclass 247.15. Apparatus
having a plurality of line condition responsive valves or
having such a valve which seats alternatively on one of a
plurality of seats.
SEE OR SEARCH THIS CLASS, SUBCLASS:
512 for plural direct response valves.
516.25 for check valves having serially arranged plural
seats.
613 for systems with plural serial valves in a single flow
path.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 211 for a valve,
per se, having serial alternately closed ports.
Subclass:
247.19
This subclass is indented under subclass 247.15. Apparatus
in which the valve is pivoted.
SEE OR SEARCH THIS CLASS, SUBCLASS:
517 for a biased opened direct response valve.
527 for a pivoted check valve.
Subclass:
247.21
This subclass is indented under subclass 247.15. Apparatus
in which the valve is a substantially spherical element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
409 especially subclasses 433 and 449 for float responsive
ball valves.
519.5 for weight biases open direct response valves of the
ball type.
533.11 for a weight biased ball check valve.
539 for a spring biased ball check valve.
Subclass:
247.23
This subclass is indented under subclass 247.21. Apparatus
having a seat lying in a general horizontal plane above the
valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
519.5 for ball valves which are weight biased open.
Subclass:
247.25
This subclass is indented under subclass 247.11. Devices
having (1) a distinct compartment with a restricted orifice
which stores flow line liquid during flow and discharges it
into the seal after the flow ceases in order to assure a seal
or replace lost seal liquid, or (2) a connection to an
outside source of seal liquid for the same purpose.
SEE OR SEARCH THIS CLASS, SUBCLASS:
114 and 118, for valves providing correlated flow in seal
replenishing apparatus of the (2) type.
240 for means to add a cleaning material to a fluid handling
system.
Subclass:
247.27
This subclass is indented under subclass 247.11. Devices
having connections for a plurality of inlet pipes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
216.1 for liquid seals with plural connections one of which
is for an external vent means.
602 for systems having multiple inlets and a single outlet,
and see the search notes thereunder.
Subclass:
247.29
This subclass is indented under subclass 247.11. Devices
having divided and recombined passage means for flow liquid
and/or air, for preventing seal loss by forward siphonage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247.25 for divided and recombined passages where a seal
replenishing chamber is included.
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
Subclass:
247.31
This subclass is indented under subclass 247.11. Devices
wherein the flow enters a leg of the U-shaped passage
tangentially to the axis of the leg.
Subclass:
247.33
This subclass is indented under subclass 247.11. Seals in
which the U-shaped passage is formed by a chamber having a
downwardly extending partition comprising an inverted cup and
a distinct outlet pipe which projects up into the cup.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 163 and 247 for
grated inlet surface drains with similar liquid seal means
where the inverted cup functions as a filtrate splash plate
or deflector.
Subclass:
247.35
This subclass is indented under subclass 247.11. Seals
comprising a chamber having a distinct inlet pipe projecting
thereinto and an outlet at a higher lever than the inlet pipe
end opening.
Subclass:
247.37
This subclass is indented under subclass 247.35. Seals
wherein the chamber comprises an overflow seal bowl hinged
for movement into and out of seal forming position.
Subclass:
247.39
This subclass is indented under subclass 247.35. Seals
wherein the chamber comprises a distinct overflow seal bowl
within a flow line connected closed casing.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, subclass 247 for
devices of similar structure including separation means.
Subclass:
247.41
This subclass is indented under subclass 247.11. Seals
wherein theU-shaped passage comprises a U-bend of which one
leg thereof is an inlet pipe and constitutes the downflow
column and the other leg is distinct and externally spaced
from the first leg and constitutes the upflow column.
Subclass:
247.43
This subclass is indented under subclass 247.41. Apparatus
installed beneath a surface and having a top side access
means located beneath an opening in the surface, the opening
being provided with a removable cover plate.
Subclass:
247.45
This subclass is indented under subclass 247.41. Seals
wherein the upflow leg or a portion thereof ahead of the
overflow into the outlet is transversely larger than the
downflow (inlet) leg.
Subclass:
247.47
This subclass is indented under subclass 247.45. Seals with
a top side access means located above the liquid seal level.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247.43 for the same apparatus positioned beneath a surface,
such as a floor, having a covered access opening therein.
Subclass:
247.49
This subclass is indented under subclass 247.41. Seals
wherein both legs of the U-bend have substantially uniform
and like internal cross sections.
Subclass:
247.51
This subclass is indented under subclass 247.49. Seals
having access means.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, subclass 92 for lateral
plugs and closures.
Subclass:
248
This subclass is indented under subclass 247. Apparatus in
which the liquid is used to seal a gap between relatively
movable valving parts of a valve in at least one position of
the valve, the liquid pool comprising in effect the seat for
the movable valve element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
246 for liquid sealing at a valve interface where the liquid
is supplied to seal the crack and is washed away when the
valve is opened.
Subclass:
249
This subclass is indented under subclass 248. Apparatus in
which the movement of the valve has a component in a
horizontal plane.
SEE OR SEARCH THIS CLASS, SUBCLASS:
309 for reversing valves of the regenerative furnace type
which do not have a liquid seat.
Subclass:
250
This subclass is indented under subclass 249. Apparatus in
which the movement in a horizontal plane is rotary.
SEE OR SEARCH THIS CLASS, SUBCLASS:
311 for rotary reversing valves of the regenerative furnace
type which do not have a liquid seat.
Subclass:
251.1
Liquid valves:
This subclass is indented under subclass 247. Apparatus in
which the sealing liquid alone performs a valving function in
response to either external control means or to fluid
pressure in the flow path, i.e., no flow conduit is withdrawn
from the liquid to open a flow path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
455 for line condition responsive valve comprising solid
material valve parts.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 188 for fluid trap seals for
dispenser inlets and outlets, including vents.
Subclass:
252
This subclass is indented under subclass 251. Apparatus in
which at least one side of the liquid valve is provided with
a branching path whereby as the sealing liquid rises on that
side beyond a predetermined point it divides into a plurality
of branches.
SEE OR SEARCH THIS CLASS, SUBCLASS:
472 for pop safety valves in which the top pressure reactor
is in a branched released path.
Subclass:
253
This subclass is indented under subclass 251. Apparatus
including auxiliary means independent of the flow path for
adjusting or varying the height of the liquid in the valve.
Subclass:
254
This subclass is indented under subclass 251. Apparatus in
which one or more baffles is provided either in or above the
liquid of the valve, usually to restrict, deflect, or slow up
sudden rising of the valving liquid.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 118 for devices having flow
restrictors, especially subclass 127 for restrictors
comprising baffles, and see the search notes to subclasses
118 and 127.
Subclass:
255
This subclass is indented under the class definition.
Apparatus having two or more tanks or compartments so
connected that (1) fluid from the same or different sources
is separately supplied to different tanks or compartments,
and/or (2) the tanks or compartments discharge separate fluid
flows externally of the system or to parts of the system
other than one another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
87.01 for self proportioning or correlating systems
involving plural fluid sources.
124 for plural siphons, especially subclass 127 for
sequential parallel discharge from plural tanks.
208 for plural units in pressure systems having gas pressure
stored over or displacing liquids.
571 for plural tanks or compartments connected for series
flow, i.e., discharging into one another, and see the search
notes to subclass 571.
SEE OR SEARCH CLASS:
222, Dispensing, 129 for dispensers having plural sources,
compartments and containers.
Subclass:
256
This subclass is indented under subclass 255. Apparatus
having means for successively filling the tanks and means for
subsequently emptying the filled tanks in succession. Many
of the patents in this group of subclasses are directed to
milk pasteurization tank systems, wherein milk at
pasteurization temperatures is retained in a tank for a
period of time before the tank is emptied.
SEE OR SEARCH THIS CLASS, SUBCLASS:
119.01 for alternately substituted outlets of a line, as to
plural tanks, in a self controlled system.
127 for siphon discharge of plural tanks in sequence.
160 and 169+, for plural traps sequentially filled and
emptied by gas pressure into a pressure chamber such as a
boiler.
266 for plural tanks discharging, receiving or vented
through a manifold or through grouped outlets and 263 for
similar devices in which the manifold is a tank.
627 for sequential distributor or collector type valve
actuation.
Subclass:
257
This subclass is indented under subclass 256. Apparatus in
which a group of tanks or compartments and the filling means
therefor are mounted for rotation with respect to one
another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
581 for movable tanks, and see the search notes thereto.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, 129 for apparatus for filling separable
receivers having means to supply and position successive
receivers relative to the filling means.
222, Dispensing, subclass 144 for rotatably mounted
assemblies of plural dispensing containers.
Subclass:
258
This subclass is indented under subclass 257. Apparatus in
which the filling means rotates with respect to the tank
group and the filling means also includes means for emptying
the tanks.
SEE OR SEARCH THIS CLASS, SUBCLASS:
627 for sequential operation of distributing and collecting
valves, and see the search notes thereto.
Subclass:
259
This subclass is indented under subclass 255. Apparatus
having means for enclosing some or all of the tanks or
compartments, means for positioning the tanks or compartments
with respect to a supporting surface or member other than the
tanks or compartments themselves, or constructional features
specially designed to permit stacking one upon another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
264 for parallel discharging tanks positioned one within
another.
356 for static constructional installations of fluid
handling devices, especially subclasses 357+ for buildings.
376 for supported tanks other than those arranged for
parallel flow.
SEE OR SEARCH CLASS:
206, Special Receptacle or Package, 503 for a receptacle
having feature or element intended to facilitate stacking.
222, Dispensing, subclass 143 for packing or stacking
arrangements for plural dispensing containers and subclasses
173+ for dispenser supports and casings.
Subclass:
260
This subclass is indented under subclass 255. Apparatus in
which the tanks or compartments are storage battery or
electrolytic cells and means is provided for supplying liquid
thereto, usually to maintain a constant liquid level in the
cells.
(1) Note. Patents for subcombinations specialized for use
in battery or cell filling apparatus are classified herein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
386 for liquid level responsive or maintaining systems other
than those for storage batteries electrolytic cell,
especially subclasses 453+ for barometric type level
maintenance.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, appropriate subclasses, especially 285 for
battery filling devices which are not continuously associated
with a particular battery.
204, Chemistry: Electrical and Wave Energy, subclass 263 and
see the note thereto for electrolytic cells provided with
means for feeding and/or withdrawing material therefrom.
429, Chemistry: Electrical Current Producing Apparatus,
Product and Process, 72 for battery having means feeding
electrolyte thereto.
Subclass:
261
This subclass is indented under subclass 260. Apparatus in
which the supply means comprises a closed container elevated
with respect to the cells and adapted to be placed in
continuous communication therewith, whereby, upon lowering of
the liquid level in the cell, liquid is supplied thereto.
SEE OR SEARCH THIS CLASS, SUBCLASS:
453 for tank level responsive or maintaining systems of the
barometric type wherein the tank is other than a battery or
an electrolytic cell, and see the search notes to subclass
453.
Subclass:
262
This subclass is indented under subclass 255. Apparatus in
which fluid from a single source is supplied to a plurality
of compartments, each of which has a normally open outlet,
for the purpose of proportionally dividing the single flow
into a plurality of flows.
SEE OR SEARCH THIS CLASS, SUBCLASS:
561 for distribution systems comprising plural flow paths,
and especially subclass 561 for those comprising an inlet and
a plurality of flow dividing outlets which have no valves and
do not accumulate any liquid at the entrance to the flow
path.
861 for fluid distribution systems having a plurality of
branches with means for stopping or controlling fluid flow in
at least one of the branches.
SEE OR SEARCH CLASS:
73, Measuring and Testing, 215 for weir type meters.
222, Dispensing, subclass 330 for dispensers having plural
outlets from a discharge assistant and subclasses 478+ for
supply containers having plural outlets or discharge guides.
Subclass:
263
This subclass is indented under subclass 255. Apparatus in
which one tank or compartment is arranged to supply to and/or
receive from a plurality of additional tanks or compartments,
with or without the intervention of a manifold.
SEE OR SEARCH THIS CLASS, SUBCLASS:
266 for tanks arranged for parallel flow having a filling
and/or emptying manifold which does not supply to or receive
from a tank or compartment in addition to those arranged for
parallel flow, and see the definition of subclass 266 for the
meaning of the term "manifold".
571 for plural tanks arranged for serial flow only.
Subclass:
264
This subclass is indented under subclass 255. Apparatus in
which one tank is positioned within another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
259 for tanks with stacking or superposing means.
340 for jackets forming a flow path in heat-exchange type
fluid handling systems.
375 for jacketed containers in a fluid handling system. The
jacket may be spaced and disclosed for holding fluid, for
storage, heat exchange or any other purpose, but the inlet
and/or outlet is not claimed.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 131 for dispensers comprising a
supply container and a spaced, nondispensing jacket and
subclass 183 for dispenser supply containers with nonspaced
jackets.
Subclass:
265
This subclass is indented under subclass 255. Apparatus
having a connecting passage whereby fluid may flow between
the tanks or compartments.
SEE OR SEARCH THIS CLASS, SUBCLASS:
571 for plural tanks connected for flow only from tank to
tank, and see the search notes on serial tanks and/or traps
collected in the definition of subclass 571.
Subclass:
266
This subclass is indented under subclass 255. Apparatus
having (1) a filling and/or emptying or venting manifold or
(2) separate outlet conduits from plural tanks or
compartments arranged to terminate adjacent one another,
usually for convenience in discharging the contents of the
several compartments.
(1) Note. In this and the indented subclasses, the term
"manifold" includes any arrangement in which flow conduits to
or from two or more tanks or compartments arranged for
parallel flow merge into a common flow passage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
262 for flow dividing compartments.
263 for plural tanks in parallel having a filling and/or
emptying manifold which is itself a tank or for plural tanks
or compartments arranged for parallel flow which discharge
into or are supplied from at least one other tank by means of
a manifold.
561 for distribution systems having branched flow lines,
including manifolds, per se.
597 for systems having a multiple inlet with a multiple
outlet.
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
602-607, for systems having multiple inlets with a single
outlet.
861-877, for systems having a flow control means for
branched passages.
SEE OR SEARCH CLASS:
222, Dispensing, 145.1 for dispensers having plural sources,
compartments or containers and a common discharge.
Subclass:
267
This subclass is indented under subclass 266. Apparatus in
which the plural compartments are of the type commonly
mounted on a truck or other vehicle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
125 for plural compartment tank trucks having siphon
discharge outlets.
899 for other fluid delivery systems combined with vehicles,
especially subclasses 351+ for automobile type vehicles, and
see the search notes to subclasses 351 and 899.
Subclass:
268
This subclass is indented under the class definition. Fluid
handling devices including a member for holding and bringing
a fluent material and a material to be dissolved or entrained
into contact with the fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
101.11 for self proportioning systems comprising
differential response means with means to entrain material
from a reservoir.
205.5 for a diverse fluid containing pressure system
including means for main line flow to displace material from
a shunt reservoir into the main line.
240 for cleaning means involving the supplying for cleaning
purposes of material other than and in addition to the
material handled by the system.
255 for systems having parallel discharge from plural
tanks.
564.5 for a follower type feeder in a shunt line responsive
to mainline flow.
602 for systems having plural inflows and a single outflow,
and see the search notes to subclass 602.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, 222 for chemical
holders in water closets.
15, Brushing, Scrubbing, and General Cleaning, subclass 302
and 320 for air blast or suction cleaners with liquid or
other cleaning material application to the work.
34, Drying and Gas or Vapor Contact With Solids, appropriate
subclasses for material handling in contact with gas or vapor
for drying, and also for such other purposes as are not
otherwise classified.
48, Gas: Heating and Illuminating, 38 for carbide feeders
for acetylene generators.
68, Textiles: Fluid Treating Apparatus, subclass 17 for
soap supply means for significantly included fluid treating
apparatus for textiles.
134, Cleaning and Liquid Contact With Solids, appropriate
subclasses for the application of liquid to solids for
cleaning and also for other miscellaneous purposes.
169, Fire Extinguishers, subclass 15 for fluid systems
having means to add a chemical (e.g., extinguishing agent) to
a flow line.
206, Special Receptacle or Package, subclass 77.1 for a soap
container provided with means to facilitate the lifting or
removal of a piece of soap from the container.
210, Liquid Purification or Separation, 198.1 for a
separating means combined with means to add a treating
material and see the search notes thereunder.
220, Receptacles, appropriate subclasses for shaving cups.
222, Dispensing, subclass 133 for a measuring dispenser for
one supply receiving an indeterminate flow from another, and
subclasses 630+ for fluid flow dispensing of an entrained
material.
239, Fluid Sprinkling, Spraying, and Diffusing, 310 for
spray discharging apparatus with dissolving means.
248, Supports, 200 for a bracket type soap holder,
subclasses 317+ for a suspended type soap holder, and
subclasses 683+ for a holder which supports the soap while in
storage position and remains with the soap while in use.
312, Supports: Cabinet Structure, subclass 351 for a soap
dish provided with means to support the soap in spaced
relation to the bottom wall of the structure.
401, Coating Implements With Material Supply, 88 for a soap
holder which holds the soap in such a manner that a portion
of the soap may be directly rubbed on the user's body or on a
surface; subclass 261 for a porous applicator pad wherein the
soap is retained in a pocket of the pad through which it
seeps when fluidized; and subclass 268 for a device wherein
soap is help in direct contact with and for application to,
an applicator of the brush, broom or mop type.
406, Conveyors: Fluid Current, 108 for material intake
apparatus for fluid current conveyors.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, 261 for dissolvers,
extractors, and leachers including those having a holder for
nonliquid material for making solutions wherein the holder as
disclosed is incapable of retaining a liquid, where
dissolving takes place in the holder and may thereafter be
added to a stream, and the handling of liquids being
restricted to the purpose of dissolving.
Subclass:
269
This subclass is indented under the class definition.
Apparatus so designed that its mode of operation can be
changed by reassembling all or some of its parts in a
different relationship to each other or by the addition or
omission of a part.
(1) Note. Apparatus in which a change in direction of an
outlet nozzle or spout is accomplished by disassembly and
reassembly are classified here.
(2) Note. See the class definition, Lines With Other
Classes and Within This Class, (3) Manual Control, etc. and
also Subclass References to the Current Class, for search
notes on fluid handling systems having adjusting means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
329-329.06, for systems having repair by providing alternate
wear part.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 290 for a valve or
actuator having plural selective neutral positions.
Subclass:
269.5
This subclass is indented under subclass 269. Devices
comprising check valves mounted in alternately positionable
carriers whereby a carried valve may check fluid flow in
either of two directions by repositioning the carrier.
Subclass:
270
This subclass is indented under subclass 269. Apparatus in
which a part or a unitary subassembly of parts may be
assembled with the remainder of the apparatus in only one
location, but plural relative angular positions or
orientations with respect thereto are possible with
corresponding changes in the mode of operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
329 for devices in which parts may be shifted to replace a
worn area, but without any change in the mode of operation.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 290 for a valve or
actuator having plural selective neutral positions.
Subclass:
270.5
This subclass is indented under subclass 270. Devices
comprising stop and vent or waste valve units having means to
associate the waste port with either principal port.
Subclass:
271
This subclass is indented under subclass 269. Apparatus in
which the mode of operation can be changed by interchanging
plural parts or unitary subassemblies. One of the parts
interchanged may be a mere plug or closure.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 290 for valve
parts, handles or actuators which may be applied in different
positions with relation to the devices without any change in
the mode of operation.
Subclass:
272
This subclass is indented under the class definition. Fluid
distributors characterized by a vertical delivery riser with
a valve at the bottom, to avoid freezing when installed below
the frost line, and an extended actuator for the valve,
usually for actuating the valve from a point adjacent the
outlet from the riser or an extension thereof.
(1) Note. The common form of this device is the fire
hydrant, but railway water cranes, outdoor toilet
installations and frost-proof irrigation outlets are
included.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.02 for a process of repairing or assembling a hydrant
(e.g., fireplug, etc.).
364 for valve and meter wells in which an underground pipe
is tapped or controlled, but no flow occurs using the well or
a pipe extending vertically through it as a flow path.
SEE OR SEARCH CLASS:
166, Wells, 72 for a well with an above ground means for
actuating means in the well.
251, Valves and Valve Actuation, 142, especially subclasses
145+ and 148+ for well pipe drain valves, many of which have
an actuator extending vertically along the pipe to be
accessible from the ground level.
Subclass:
273
This subclass is indented under subclass 272. Apparatus
including a laterally extending delivery spout at the top of
the riser for delivery of liquid, usually to movable tanks,
e.g., water to railroad locomotive tenders or gasoline to
tank trucks.
SEE OR SEARCH THIS CLASS, SUBCLASS:
615 for distribution systems having articulated and swinging
flow conduits, and see the search notes to subclass 615.
801 for nozzles and spouts, per se, and see the search notes
thereto.
Subclass:
274
This subclass is indented under subclass 273. Apparatus in
which the valve is actuated by movement of the spout into
delivery position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
616 for distribution systems having valves controlled by
articulated or swinging flow conduits, and see the search
notes thereto.
Subclass:
275
This subclass is indented under subclass 273. Apparatus in
which the riser is rotatable about its axis to position the
spout for delivery of water.
SEE OR SEARCH THIS CLASS, SUBCLASS:
286 for rotating risers in hydrants, i.e., those vertical
discharge pipes which lack lateral extensions.
Subclass:
276
This subclass is indented under subclass 275. Apparatus in
which the spout is attached to the rotatable riser by a
flexible joint providing for movement of the spout in at
least one plane.
SEE OR SEARCH THIS CLASS, SUBCLASS:
279 for water cranes having a spout articulated to a
stationary or movable but nonrotating riser.
615 for articulated or swinging flow conduits in
distribution systems, and see the search notes to subclass
615.
801 for nozzles or spouts, per se, and see the search notes
thereto.
Subclass:
277
This subclass is indented under subclass 275. Apparatus in
which the riser is movable vertically as well as rotatably.
SEE OR SEARCH THIS CLASS, SUBCLASS:
287 for hydrants having vertically reciprocating risers
which may also rotate.
Subclass:
278
This subclass is indented under subclass 273. Apparatus in
which the spout is extensible in a lateral direction from the
riser to vary its length.
SEE OR SEARCH CLASS:
222, Dispensing, 522 for dispensers having axially slidable
tubes or sleeves.
Subclass:
279
This subclass is indented under subclass 273. Apparatus in
which the spout is attached to the riser by a flexible joint
providing for movement of the spout in at least one plane.
SEE OR SEARCH THIS CLASS, SUBCLASS:
276 for similar spouts associated with rotating risers.
615 for articulated or swinging flow conduits in
distribution systems, and see the search notes to subclass
615.
801 for nozzles or spouts, per se, and see the search notes
thereto.
SEE OR SEARCH CLASS:
222, Dispensing, 526 for movable material discharge guides
for dispensers.
Subclass:
280
This subclass is indented under subclass 272. Apparatus in
which at least part of the riser is divided into plural
parallel fluid flow passages.
SEE OR SEARCH THIS CLASS, SUBCLASS:
294 for hydrant risers having a casing or housing which is
not a flow path but merely a support or protector.
Subclass:
281
This subclass is indented under subclass 272. Apparatus
including an expansible chamber near the bottom of the riser
and operated by movement of the riser and/or valve actuator
to evacuate water from the riser as the valve is closed or
receive the drain or waste after the valve is closed, and to
refill the riser as or before the valve is opened.
(1) Note. These are primarily anti-freeze devices for
storing the water trapped in the riser at the lowest point
above the valve, and returning it to the flow path at the
start of the next discharge.
SEE OR SEARCH THIS CLASS, SUBCLASS:
62 for low temperature responsive drains.
301 for other antifreeze protection of hydrants.
568 for reserve or surge receiving means for distribution
systems having pumps.
596 for distribution systems provided with stop and waste
means or drains.
777 for expansible chamber devices, per se.
SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, subclass 41.14 for means
for withdrawing and storing the water from the cooling system
of an internal combustion engine when the engine is not
operating.
138, Pipes and Tubular Conduits, 27 for freeze protecting
expansible chambers for pipes and tubular conduits.
Subclass:
282
This subclass is indented under subclass 272. Apparatus
combined with a pump or ejector.
SEE OR SEARCH THIS CLASS, SUBCLASS:
575 for distribution systems embodying pumps, and see the
search notes to subclass 565.
Subclass:
283
This subclass is indented under subclass 272. Apparatus in
which a valve and its valve seat are so arranged as to
facilitate removal, usually where the valve opens
downwardly.
(1) Note. The valve and valve seat concerned may be either
the main valve or the drain valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
234.5 and 454.2+, for other removable units.
326 for foot valve extraction through a tank.
327 for disassembly tool engaging features in fluent
material handling systems.
439 for float arm operated valves which may be removed by
working from the outside of the tank, leaving the actuating
mechanism in the tank.
Subclass:
284
This subclass is indented under subclass 283. Apparatus in
which the valve seat is provided with an extension
independent of the riser, to facilitate its removal.
Subclass:
285
This subclass is indented under subclass 272. Apparatus in
which the main valve is arranged to be removable, and a
supplemental check valve is provided, biased closed by a
spring or by fluid pressure and normally held open by a
projection on the main valve or its actuator when the main
valve is in place.
SEE OR SEARCH THIS CLASS, SUBCLASS:
223 for inflation stems having a valved extension which
comprises means for opening the valve in the main stem.
283 for hydrants having the valve and valve seat removable.
320 for devices for tapping a system under pressure, the
system having a valve actuated by the separable tapping
device or by means carried thereby.
326 for foot valve extraction through a tank.
327 for systems having means provided for engagement by
tools for assembling and disassembling the system.
329.1 and 329.2+, for repair check type valves held inactive
except at times of repair.
613 for distribution systems having serial valves in a
single flow line.
Subclass:
286
This subclass is indented under subclass 272. Apparatus in
which the riser serves as the actuator for the valve, i.e.,
movement of the riser in a predetermined manner actuates the
valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
274 for spout-operated valves in water cranes.
275 for rotating risers having laterally extending spouts.
616 for distribution systems in which an articulated or
swinging flow conduit actuates the valve, and see the search
notes thereto.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 341 and 349+ for valves
operated by moving the casing or an extension thereof,
including inlets and outlets.
Subclass:
287
This subclass is indented under subclass 286. Apparatus in
which reciprocating movement of the riser actuates the
valve.
(1) Note. This subclass includes those hydrants in which a
combination of reciprocating movement and rotary movement of
the riser actuates the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
277 for water crane risers which reciprocate and rotate.
Subclass:
288
This subclass is indented under subclass 287. Apparatus in
which the valve is a piston cooperating with one or more
ports in a cylindrical valve seat.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 318 for reciprocating
valves of general utility, and see the search notes thereto,
and subclasses 324+ for piston valves, per se.
Subclass:
289
This subclass is indented under subclass 272. Apparatus in
which the valve is balanced, i.e., has opposed surfaces of
equal or nearly equal area exposed to the line fluid
pressure.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 281 for balanced
valves of general application and see the search notes
thereto.
Subclass:
290
This subclass is indented under subclass 272. Apparatus in
which the valve actuator has at least one element projecting
in a generally horizontal direction adjacent the bottom of
the riser, or comprises a linkage such that the resultant
movement of the valve is in a generally horizontal
direction.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 213 for mechanical movement
valve actuators, especially subclass 279 for actuating
linkages.
Subclass:
291
This subclass is indented under subclass 272. Apparatus in
which the extended valve actuator does not extend
longitudinally through the flow path or riser, but is located
entirely outside the riser.
(1) Note. The valve may have a spindle or stem which serves
as a mounting for the valve disk or plug and extends through
the top of the valve body.
SEE OR SEARCH THIS CLASS, SUBCLASS:
364 for valve and meter wells which house an actuator for an
underground valve which has no vertical flow path.
Subclass:
292
This subclass is indented under subclass 291. Apparatus in
which the valve actuator includes a lever.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 231 for valve actuators of
general utility which includes a lever, and see the search
notes thereto.
Subclass:
293
This subclass is indented under subclass 291. Apparatus with
a ground supporting casing for at least the upper end of the
riser whereby the discharge end of the riser can be at or
below the surface of the ground or pavement where it is
installed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
295 for other types of hydrants with a casing flush with
ground or pavement.
363 for apparatus of this class in general combined with a
ground supporting casing, especially subclasses 363+ for
valve and meter wells which house a valve for underground
flow lines and a vertically extending, usually removable,
actuator.
Subclass:
294
This subclass is indented under subclass 272. Apparatus
combined with an external enclosure for the riser, valve
casing or valve actuator or for a part thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
343 particularly subclasses 364+ and 375 for other apparatus
of this class combined with an external enclosure or casing,
and see the search notes on casings generally under subclass
375.
Subclass:
295
This subclass is indented under subclass 294. Apparatus in
which at least a portion of the casing provides a ground
supporting recess for the discharge end of the riser whereby
the discharge opening can be at or below the surface of the
ground or pavement where it is installed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
293 for hydrants with actuator outside riser and with casing
flush with ground or pavement.
364 for ground supporting casings for valves and their
actuators or for meters.
Subclass:
296
This subclass is indented under subclass 294. Apparatus in
which the casing includes a cap, cover or hood for the top or
discharge outlet of the riser.
SEE OR SEARCH THIS CLASS, SUBCLASS:
300 for valves at the outlet of a hydrant.
371 for covers for valve and meter wells.
800 for closures for fluent material handling systems, and
see the search notes thereto.
Subclass:
297
This subclass is indented under subclass 294. Apparatus
which includes a heating means, e.g., a heat exchange device
or a gas or oil burner.
SEE OR SEARCH THIS CLASS, SUBCLASS:
281 and 301+, for other means for protecting hydrants
against freezing.
334 for other apparatus of this class combined with a
heating or cooling means, especially subclass 338 for hydrant
and meter wells having passages for thermal circulation of
air and see the search notes to subclass 334.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, 32 for thawing and freeze
protection of pipes and tubular conduits.
Subclass:
298
This subclass is indented under subclass 272. Apparatus
which includes means for lubricating the valve actuator.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 355 for valve
actuator lubrication of general utility, and see the search
notes thereto.
Subclass:
299
This subclass is indented under subclass 272. Apparatus
which includes one or more valves at outlets from the riser,
either in the riser or in a discharge spout, and provided in
addition to the main or foot valve of the riser.
SEE OR SEARCH THIS CLASS, SUBCLASS:
613 for systems involving a single flow path with plural
serial valves, and see the search notes to subclass 613.
861 for systems involving flow control means for plural
passages, and see the search notes to subclass 861.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 147 for pipe
terminal mountings for valves.
Subclass:
300
This subclass is indented under subclass 272. Apparatus
which includes an additional valve independent of the main
valve and exposed to fluid upstream of the main valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
290 for hydrants having a single main valve which is located
upstream from the base of the riser.
613 for systems including a single flow path with plural
serial valves, and see the search notes to subclass 613.
Subclass:
301
This subclass is indented under subclass 272. Apparatus
which makes some provision for preventing freezing of water
in the riser or around the valve, by providing for its
removal from the hydrant, by arrangement of the connection to
the water main or by means provided inside the flow path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
59 for freeze condition responsive safety systems,
especially subclass 61 for low temperature responsive cut
offs, and 62 for low temperature responsive drains.
68.11 for system control by frangible means.
107 for systems where a waste or drain valve opens in
response to stoppage of flow.
272 for arrangements for getting water out of frozen
hydrants.
281 for prevention of freezing by providing an expansible
chamber for draining water from the riser and retaining it
below the frost line for later use.
297 for hydrant casings with heater.
338 for system installations providing for circulation of
air from below to above ground for freeze protection
purposes.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, 32 for thawing and freeze
protection for pipes and tubular conduits.
Subclass:
302
This subclass is indented under subclass 301. Apparatus in
which freezing of water in the riser is prevented by
providing an auxiliary valve operated in at least one
direction by the actuator of the main valve for draining the
riser when the main valve is closed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
61 for low temperature responsive stop and waste devices.
102 for self correlating systems of the supply and exhaust
type, especially subclass 107 for waste responsive to flow
stoppage.
281 for expansible chambers for draining water from the
riser and retaining it.
596 for stop and waste and drain valves in other types of
fluent material handling apparatus, and see the search notes
thereto.
625.2 for stop and waste valve units.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, subclass 337 and
339 for water closets having antifreeze drain means in riser
pipes.
251, Valves and Valve Actuation, 143 for drains for well
pipes, etc.
Subclass:
303
This subclass is indented under subclass 302. Apparatus
including selective means for preventing operation of the
auxiliary or drain valve.
(1) Note. These devices are usually operative during the
summer.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 89 for means for disabling
or preventing operation of a valve of general utility, and
see the search notes thereto.
Subclass:
304
This subclass is indented under subclass 302. Apparatus in
which the control valve and the drain valve are relatively
movable but are operated by a single actuator.
SEE OR SEARCH CLASS:
222, Dispensing, 445 for nonrigidly connected cut-offs for
stationary measuring traps in dispensers.
251, Valves and Valve Actuation, 631 for cyclic valves, and
see the notes to the definition of subclass 631.
Subclass:
305
This subclass is indented under subclass 304. Apparatus in
which the drain valve is operated in only one direction by
abutment of a part thereof with the control valve or a
projection thereon or on the valve actuator, operation in the
other direction being by weight or spring bias.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 231 for free engagement connection
between successive agitators and discharge assistant and/or
interconnected valve, and subclass 446 for free engagement
interconnection between trap chamber cut-offs in dispensers.
Subclass:
306
This subclass is indented under subclass 304. Apparatus in
which the valve actuator includes a screw or gear interposed
between the main valve and the waste valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 215 and 264+ for valve
actuators of general application involving a screw, and
subclasses 248+ for valve actuators of general application
including a gear.
Subclass:
307
This subclass is indented under subclass 302. Apparatus in
which the control valve and drain valve are relatively fixed
and comprise a reciprocating body. A unitary body, usually
cylindrical, and cooperating with plural ports to accomplish
the stop and waste function is included in this subclass.
(1) Note. Screw actuated valves are considered
reciprocating for the purposes of this subclass when the
rotary component of the valve movement is not necessary to
the valving function.
SEE OR SEARCH CLASS:
222, Dispensing subclass 453 for axially slidable rigidly
connected valves for stationary measuring traps for
dispensers.
Subclass:
308
This subclass is indented under subclass 307. Apparatus in
which the drain passage is through a guide channel for a
valve extension or the valve stem or actuator projection and
below the normal travel limits of the valve.
Subclass:
309
This subclass is indented under the class definition. Fluid
handling devices comprising four-way reversing valves
disclosed for fluid distribution in connection with a
regenerative type of furnace, gas generator, or similar
circuit having two connections to two heat exchangers or
regenerators, a connection for incoming air or fuel or both,
and a connection to the exhaust stack, the valve being
selectively movable into two positions; in one position the
incoming air or fuel is passed through a first heat exchanger
or regenerator to the furnace or gas generator, the exhaust
gases passing through the second heat exchanger or
regenerator to the exhaust stack; and in the other position
of the valve the incoming air or fuel is passed through said
second heat exchanger or regenerator, to the furnace or gas
generator, and the exhaust gases pass through said first heat
exchanger or regenerator to the exhaust stack.
SEE OR SEARCH THIS CLASS, SUBCLASS:
248 for reversing valves of this type having liquid trap
seals.
631 for cyclically actuated valves, and see the search notes
to subclass 631.
Subclass:
310
This subclass is indented under subclass 309. Reversing
valves wherein a coolant, such as air or water, is circulated
in heat exchange relation with the valve, valve seat, or
operating parts thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
334 for fluid handling systems having heating or cooling
means and see the search notes to subclass 334.
Subclass:
311
This subclass is indented under subclass 309. Reversing
valves wherein the valve is mounted for rotating or
oscillating motion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
250 for rotary reversing valves of this type having liquid
trap seals.
Subclass:
312
This subclass is indented under the class definition.
Apparatus in which means are provided to catch or otherwise
dispose of material dripping, leaking or being discharged as
waste material.
(1) Note. By drip, leakage or waste is meant material which
escapes to the exterior of the normal flow path and which is
not caught or received by the intended receiver, including
condensate and water derived from melting ice, for example.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.11 for a process of detecting or repairing a leak in a
pipe, joint, valve, or tank.
144 for siphons having means to remove air leakage.
427 for float leakage disposal.
596 for distribution systems having drain and stop and waste
devices, and see the search notes thereto.
SEE OR SEARCH CLASS:
222, Dispensing, 108 for drip, leakage or waste catching or
disposal in dispensers.
251, Valves and Valve Actuation, subclass 128 for valves
having detachable actuators and means to prevent leakage when
the actuator is detached.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
Subclass:
313
This subclass is indented under subclass 312. Apparatus in
which either a receptacle or a pipe means is provided to
collect the fluid dripping from an outlet after cessation of
normal flow, the collecting means and the outlet being
relatively movable.
Subclass:
314
This subclass is indented under subclass 312. Apparatus in
which a collecting or drain means is provided for a liquid
which is derived from a solid, gas, or vapor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
171 for diverse fluid containing pressure systems providing
for the collection of one of the diverse fluids with
discriminating outlets for said diverse fluids.
SEE OR SEARCH CLASS:
62, Refrigeration, 272 for atmospheric condensate handling,
subclass 391 for a withdrawable liquid receiver, subclasses
420+ for an air cooler utilizing ice, and subclasses 459+ for
an enclosure with ice supports.
Subclass:
315.01
WITH REPAIR, TAPPING, ASSEMBLY, OR DISASSEMBLY MEANS:
This subclass is indented under the class definition.
Subject matter wherein the parts of the fluid handling system
are equipped with means to restore the system to its former
condition, means for piercing or withdrawing a plug in the
system, or means for securing or taking apart parts of the
system. [figure] [caption]Figure 1: A typical example of the
subject matter. REPAIR PATCH FOR RUPTURED FLUID TANK. A -
Patch; B - Fluid tank; C - Rupture; D - Cable (to secure
container to tank); E - Container; F - Peripheral edge; G -
Tubular seal (fluid filled); H - Fluid bypass passage; J, K -
Exterior surface with protruding eyelets; L - Triggering
wire. [figure] [caption]Figure 2: A typical example of the
subject matter. DIVERSION BLIND FITTING FOR PIPELINE REPAIR.
A,B - Pipe sections; C, D - Flanges; E - Diversion blind
fitting; F - Circular body section; G, H - Bolt holes with
bolts; J - Threaded pipe section; K - Pipe coupling; L -
Fluid duct.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.01-15.26, for a process of cleaning, repairing, or
assembling.
270-270.5, for a convertible unit orientable in a single
location between plural positions.
271 for convertible units interchangeable between alternate
locations.
524 for a valve (i.e., check valve, etc.) that directly
responds to a change in line condition having a bias
adjustment indicator.
530 for a reciprocating valve (i.e., check valve, etc.) that
directly responds to a change in line condition having a bias
fixed or adjusted by a cam.
531 for a reciprocating valve (i.e., check valve, etc.) that
directly responds to a change in line condition having a bias
fixed or adjusted by varying its lever.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, subclasses 97-99 for
repairing a pipe or tubular conduit.
166, Wells, subclasses 85.1-85.5 for above ground well
assembly or disassembly means (e.g., handling, guiding, tool
feature, etc.).
251, Valves and Valve Actuation, subclass 35 for a fluid
actuated or retarded variable valve position choke passage
pressure type servomotor for valve actuation, subclass 42 for
a fluid actuated or retarded valve having choke passage
pressure type servomotor including an adjustable opening
limit for a main valve, subclass 60 for a fluid actuated or
retarded valve having an adjustable limit stop, subclasses
84-88 for valve heads movable connected for accommodation to
seat, subclasses 120-122 for a valve having a movable or
resilient material guide or restrictor, subclasses 148-152
for a pipe coupling or union with a correlated flow line,
subclass 233 for a valve having a variable leverage lever
actuator that is adjustable during operation, subclass 234
for a valve having an adjustable leverage lever, or subclass
367 for a sectional valve body.
Subclass:
315.02
Blowout preventer or choke valve device (e.g., oil well flow
controlling device, etc.):
This subclass is indented under subclass 315.01. Subject
matter comprising a plurality of relatively movable flow
obstruction members controlling an annular fluid flow passage
about an axial rod or pipe, such as between a well casing and
drill stem or a fluid flow regulating device, in combination
with a means for stopping the abrupt escape of fluid in the
annular space between a casing supported enclosure and pipe,
rod, tubing, or wireline. [figure] [caption]Figure 1: A
typical example of the subject matter. A - Blowout preventer;
B - Main body; C - Vertical bore; D - Guideways; E - Upper
and lower flanges; F - Bonnet; G - Ram (recriprocates during
normal preventer operation); H - Bonnet body; J - Cylinder; K
- Bonnet head.
SEE OR SEARCH THIS CLASS, SUBCLASS:
382-382.5, for a casing for a valve.
SEE OR SEARCH CLASS:
166, Wells, subclasses 86.1-88.1 for an above ground
apparatus having blowout preventing means and a valve,
subclasses 88.1-88.4 for an above ground apparatus having
blowout preventing means and a lateral port, or subclasses
179-203 for a packer or plug insertable from the top of a
well or into a well conduit.
251, Valves and Valve Actuation, subclasses 1.1-1.3 for a
blowout preventer or subclasses 118-127 for a material guide
or restrictor.
Subclass:
315.03
Solenoid or electromagnetically actuated valve:
This subclass is indented under subclass 315.01. Subject
matter wherein the valve is controlled by electricity such as
an electrically energized coil of insulated wire producing a
magnetic field within the coil.
(1) Note. A solenoid usually acts as a switch or control for
a mechanical device (e.g., valve, etc.) and has a coil of
wire, usually in cylindrical form, that acts like a magnet
when carrying a current to draw a movable core into the coil.
[figure] [caption]Figure 1: A typical example of the subject
matter. A - Valve casing; B - Valve sleeve; C - Valve cover;
D - Guiding member; E - Valve body; F - Spool; G - Armature;
H - Plunger; J - Valve element; K - Valve chamber; L - Valve
seats.
SEE OR SEARCH THIS CLASS, SUBCLASS:
66 for a safety valve retained in its set or open position
under the action of a solenoid which is energized by the
electric current generated by a thermoelectric element.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 30.01-30.05 for
a fluid actuated or retarded valve controlled by an
electrically actuated pilot valve or subclasses 129.15-129.22
for an electrically actuated valve including a solenoid.
Subclass:
315.04
Pressure regulating type valve:
This subclass is indented under subclass 315.01. Subject
matter comprising a valve adapted to be connected in a fluid
line or fluid system for shutting off flow in response to a
fluid force in the nature of a thrust distributed over an
area in excess of a predetermined thrust.
(1) Note. Included in this subclass are "pressure
regulators" and "reducing valves" in which a main valve which
regulates the supply of fluid from an inlet to an outlet
passage is actuated as to its opening movements by a piston
which is operated by fluid from the inlet passage, the supply
and exhaust of which to and from the actuating piston are
controlled by a secondary or controlling valve, the movements
of which are in turn regulated by a movable abutment
subjected on one side to pressure from the outlet-passage and
on the other side to the pressure of a spring or weight.
[figure] [caption]Figure 1: A typical example of the subject
matter. SELF CENTERING VALVE FOR CONTROLLING LIQUID PRESSURE.
Nozzle "A" and valve shutter plate "B" form seating
components of the valve, locking ring "C" mounted on flange
"D" and the upper end of pipe "E" to which valve is fitted.
SEE OR SEARCH THIS CLASS, SUBCLASS:
224-226, for an inflatable article (e.g., tire filling chuck
or stem, etc.) having a pressure-responsive pressure-control
means.
517-521, for a biased open line condition responsive check
valve.
599.09 for systems dividing into parallel flow lines, then
recombining having a fluid pressure-regulating valve.
[figure] [caption]Figure 1: A typical example of the subject
matter. A - Valve body; B - Central cavity; C -
Circumferential rim defining opening to "B"; D - Fluid inlet
passage; E - Fluid outlet passage; F - Bonnet or casing; G -
Flexible diaphragm defining closed pressure chamber within
"B"; H - Thin metallic gasket; J - Valve stem; K - Valved
passage; L - Backup plate.
Subclass:
315.05
Diaphragm type:
This subclass is indented under subclass 315.04. Subject
matter wherein the valve has a thin flexible member (e.g.,
disk shaped, etc.) secured at its periphery to the valve body
and deformable by fluid pressure to act as an open and close
member for the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.07 for a fluid handling system with means to assemble or
disassemble a compressible tube or diaphragm type valve.
456-466, for a line condition change responsive valve with
safety cutoff requiring reset.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 281-283 for a
valve proportioned so that forces exerted by line pressure on
both sides of the valve are balanced, subclass 331 for a
diaphragm type reciprocating valve, subclass 335.2 for a
diaphragm type hermetic flexible wall seal for a valve
actuator, or subclass 901 for a curtain type valve.
Subclass:
315.06
Gas or water meter replacing:
This subclass is indented under subclass 315.01. Subject
matter wherein means for restoring to a serviceable condition
or fitting together various parts so as to make into an
operative whole is directed to an instrument for measuring
and recording the quantity of a combustible mixture used for
commercial or industrial heating or for measuring and
recording the quantity of water supplied for commercial or
industrial use. [figure] [caption]Figure 1: A typical example
of the subject matter. A - Riser pipe; B - Shutoff valve; C -
Nipples; D - Union; E - Regulator; F - Nipples; G - Elbow; H
- Union fittings; J - Gas meter.
SEE OR SEARCH CLASS:
73, Measuring and Testing, subclass 201 for a meter combined
with the housing boxes or means for connecting the meter into
a pipeline or meter box; this subclass also includes the
structure of the meter or meter box; subclass 272 for a meter
subcombination or elements of the meter used for volume or
rate of flow; subclass 276 for a check valve combined with a
meter structure
Subclass:
315.07
Assembling or disassembling flexible tube or sleeve type
valve:
This subclass is indented under subclass 315.01. Subject
matter wherein means comprises a flow regulating clamp for
regulating the flow of fluid through a resilient or pliable
hollow elongated, usually cylindrical body or a flexible,
resilient elastomeric tubular part designed to fit over
another part together with means to constrict the tubular
part so as to regulate, throttle, or terminate the flow of
fluid. [figure] [caption]Figure 1: A typical example of the
subject matter. A - Tubing clamp assembly; B - Clamp body; C
- Passage; D - Parallel side walls; E - End wall; F -
Restricted opening; G - Threaded shank; H - Threaded nut.
[figure] [caption]Figure 2: A typical example of the subject
matter. A - Hollow housing; B - Sleeve portion; C - Process
fluid containing pipeline. Motive fluid fills actuating space
between housing "A" and sleeve "B".
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.05 for a fluid handling system with repair, tapping,
assembly, or disassembly means for a diaphragm type pressure
regulator, pressure-regulating valve, or reducing valve.
SEE OR SEARCH CLASS:
24, Buckles, Buttons, Clasps etc., subclass 115 for a ball
or roller cord or rope holder, or subclasses 459-462 for a
clasp having dissociable gripping members.
92, Expansible Chamber Devices, subclasses 96-104 for a
diaphragm type collapsible chamber.
251, Valves and Valve Actuation, subclasses 4-10 for a
means to control flow by compressing a flexible fluid
conveying tube, or subclass 331 for a diaphragm type
reciprocating valve.
411, Expanded, Threaded, Driven, Headed, Tool-Deformed, or
Locked-Threaded Fastener, subclass 907 for an elastomeric
fastener or fastener element.
Subclass:
315.08
Assembling or disassembling float or float valve:
This subclass is indented under subclass 315.01. Subject
matter comprising a hollow buoyant element usually attached
at the end of a lever and providing positive buoyancy while
resting on the surface of the fluid. [figure] [caption]Figure
1: A typical example of the subject matter. A - Tank; B -
Valve body; C - Bung hole; D - Mounting flange; E - Float
arm; F - Float.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.26 for a process of assembling, disassembling, or
repairing a float valve.
165-168, for a float responsive to liquid in a trap (e.g.,
boiler, etc.) to control gas pressure within the trap.
409-451, for a liquid level responsive or maintaining system
by a float controlled valve.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, subclass 70 for a
float controlled fluid distribution valve.
431, Combustion, subclass 64 for a level responsive means to
control fuel level in a wick pot or pot type burner.
Subclass:
315.09
Assembling or disassembling multi way valve:
This subclass is indented under subclass 315.01. Subject
matter comprising a device wherein a single flow regulating
element regulates a plurality of flow lines. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Valve body; B, C, D - Radial ports; E - Cylindrical bore; F
- Spindle (mandrel); G, H, J, K, - O-rings; L - Thin
protective sleeve; M - Spindle cap. In operation, "G" and "H"
seal the valve against loss of fluid; "J" and "K" divide the
space between spindle and bore into three discrete flow
passages.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.21 for a process of assembling, disassembling, or
repairing a multi way valve.
625-625.5, for a multi way valve device.
Subclass:
315.11
Assembling, disassembling, or mounting cartridge type valve
(e.g., insertable or removable as a unit, etc.)
This subclass is indented under subclass 315.01. Subject
matter comprising means, usually replaceable and designed to
permit ready insertion or removal, and usually consists of a
single, self-contained assembly. [figure] [caption]Figure 1:
A typical example of the subject matter. A - Valve assembly;
B - Support box; C - Valve module or cartridge; D - Valve
operating means; E - Flow passageway.
Subclass:
315.12
Faucet type (e.g, domestic water use, etc.):
This subclass is indented under subclass 315.11. Subject
matter comprising a fixture for drawing a liquid from a pipe,
cask, or other vessel for household use. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Faucet assembly; B - Inlet nipples; C - Support deck; D -
Base plate; E - Cover plate; F - Spout (outlet); G - Operator
(knob) ; H - Readily removable plate.
SEE OR SEARCH THIS CLASS, SUBCLASS:
603 for systems having multiple inlets with a single outlet
including a faucet attachment.
SEE OR SEARCH CLASS:
285, Pipe Joints and Couplings, subclasses 18-40 for joint
or coupling with assembly means or feature or subclass 921
for a snap-fit type of joint or coupling.
403, Joints and Connections, subclass 361 for socket type
interfitted members.
Subclass:
315.13
Including removable valve head and seat unit:
This subclass is indented under subclass 315.12. Subject
matter wherein the disk part of the faucet and the ring on
which the disk part rests are adapted to be assembled into a
unitary construction and can be replaced as one single
assembly. [figure] [caption]Figure 1: A typical example of
the subject matter. A - Valve stem assembly; C - Valve seat;
D - Sleeve opening; F - Valve stem; G - Washers; H - Packing
nut; J - Packing; K - Fluid inlet; L - Fluid outlet. [figure]
[caption]Figure 2: A typical example of the subject matter. A
- Valve stem assembly; B - Sleeve; C - Valve seat; D - Sleeve
Opening; E - Valve member controls fluid; F - Valve stem; G -
Washers.
SEE OR SEARCH THIS CLASS, SUBCLASS:
329.02-329.04, for repair by means where a valve head or seat
having oppositely disposed duplicate surfaces forming a
unitary structure is replaceable or having an unworn surface
movable into an operative position.
454.2-454.6, for a removable valve head and seat unit.
Subclass:
315.14
Including mechanical movement actuator:
This subclass is indented under subclass 315.12. Subject
matter wherein the significance is attributed to moving parts
of the mechanism that transmit definite motion to the
component of the valve or to the valve itself, such that the
motion provided at the input (actuator) end of the mechanism
is different in direction or distance traveled than the
motion at the output (valve) end of the mechanism. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Faucet body; B - Valve stem; C - Upper sleeve with internal
threads; D - Lower rod with external threads; E - Valve head;
F - Valve seat; G - Direction of water flow; H - Gland nut; J
- Threaded lock nut; K - Compression spring to urge "E"
against "F"; L - Annular friction ring; M - Deformable "O"
ring; N - Packing material; P - Common conduit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.35-315.4, for a particular mechanical actuator of a
valve with repair, tapping, assembly, or disassembly means.
SEE OR SEARCH CLASS:
220, Receptacles, subclasses 288-304 for a removable screw
type closure guided in rotary and reciprocatory movement.
251, Valves and Valve Actuation, subclasses 213-280 for a
mechanical movement actuator.
Subclass:
315.15
Particular handle or handle fastening means:
This subclass is indented under subclass 315.12. Subject
matter wherein the significance is attributed to a faucet
adapter for adapting a part that is designed especially to be
grasped by hand for mounting on the valve stem of various
configurations. [figure] [caption]Figure 1: A typical example
of the subject matter. A - Spout; B - Valve stem; C -
Adaptor; D - Faucet handle; E - Skirt.
SEE OR SEARCH CLASS:
16, Miscellaneous Hardware, subclass 114 for a detachable
handle, subclass 121 for a knob type handle, digest 24 for
handle fastening means, or digest 30 for a knob or control
lever.
74, Machine Element or Mechanism, subclasses 527-542 for a
control lever and linkage system having a detent element,
subclasses 548-551 for a control lever and linkage system
having a handle shaft connection element or subclass 553 for
a control lever and linkage system having a knob or dial
shaft connection element.
403, Joints and Connections, subclass 359 for interfitted
members having a longitudinally splined or fluted rod.
Subclass:
315.16
Assembling or disassembling pivoted valve:
This subclass is indented under subclass 315.01. Subject
matter comprising flow regulating means wherein the disk or
plug unit of the regulating means swings around the means by
which it is mounted with respect to the seat or casing of the
regulating means. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Valve housing; B -
Mounting flanges; C - Pivot shaft; D - Valve seat; E - Valve
flapper; F - Deflector; G - Inlet port; H - Outlet port; J -
Clevis and pin assembly; K - Lever arm; L - Wear surface; M -
Centering lugs.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 58 for a fluid
actuated or retarded valve with a mechanical movement between
actuator and valve, subclass 228 for a pivoted valve having a
mechanical movement actuator, or subclasses 298-303 for a
pivoted valve.
Subclass:
315.17
Assembling or disassembling rotary valve:
This subclass is indented under subclass 315.01. Subject
matter comprising flow regulating means wherein the head of
the regulating means turns or revolves about its axis.
[figure] [caption]Figure 1: A typical example of the subject
matter. A - Valve casing; B - Fluid inlet; C - Fluid outlet;
D - Fluid passage through valve; E - Valve seat; F - Rotary
valve head; G - Valve head openings; H - Valve head hub; J -
Valve stem; K - Valve handle; L- Spring to hold valve seat.
SEE OR SEARCH THIS CLASS, SUBCLASS:
56 for a centrifugal mass type, exclusive of liquid, speed
responsive control for a rotating valve.
250 for a seal for a valve that rotates in a horizontal
plane.
625.15-625.16, for a fluid handling system having a rotary
multi way valve unit including sequentially progressive
opening or closing of plural ports with subsequent closing of
the first port.
625.21-625.24, for a fluid handling system having a rotary
multi way valve unit including a supply and exhaust.
625.34 for a fluid handling system dividing into parallel
flow lines with recombining having multi way valve using a
reciprocating spool.
625.41 for a fluid handling system having a multiple inlet
with single outlet using a multi way valve.
625.46-625.47, for a fluid handling system having a rotary
multi way valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 149.2 for a
correlated flow path where a valve is rotatably or hingedly
mounted and includes a linear valve operating component to
the flow path sections, subclasses 160-166 for rotary valves
having means to increase the head and seat contact pressure,
subclass 283 for a rotary valve that uses differing opposing
surface areas to balance forces exerted on the valve by
differing pressures, or subclasses 286-288 for a limit stop
for a rotary valve.
Subclass:
315.18
Rotary ball valve:
This subclass is indented under subclass 315.17. Subject
matter wherein the flow regulating means comprises a housing
having a flow passage therethrough and a seat for the
regulating means and a spherical plug type closure member
that contacts the seat and can be rotated about an axis
passing generally through its geometrical center by an
actuating means. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Bar stock type ball valve;
B - Ball type valve member; C - Elongated valve bore; D -Ball
rotation axis; E - Valve stem; F - Valve handle; G, H - Valve
seats; J - Housing axis; K, L - Valve open ends connected to
pipelines. In operation, fluid flows through the housing when
bore "C" is in alignment with axis "J" and fluid flow is
blocked when ball "B" is rotated 90 degrees so that bore "C"
is transverse to axis "J".
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.22 for a process of assembling, disassembling, or
repairing a ball valve or rotary ball valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 315.01-329.4
for a rotary ball valve.
Subclass:
315.19
Particular valve seat or interface seal:
This subclass is indented under subclass 315.18. Subject
matter wherein the significance is attributed to a usually
circular ring on which the valve head rests or to a tight,
perfect enclosure or joint that is formed by resting of the
valve head on the ring. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Valve body; B - Intake
port; C - Outlet port; D - Ball element; E - Fluid passage; F
- Seal seat assembly; G - Seal seat assembly; H - Seal seat;
J - "O" rings. Note: Ball "D" is engaged (inlet side) by seal
seat assembly "F" and (outlet side) by seal seat assembly
"G".
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 314-317.01 for
a seat or interface seal for a rotary valve.
384, Bearings, subclasses 416-419 for a plain bearing for a
rotary member.
Subclass:
315.2
Replaceable:
This subclass is indented under subclass 315.19. Subject
matter comprising seat or sealing element so constructed or
arranged as to be readily removed and restored to its former
condition. [figure] [caption]Figure 1: A typical example of
the subject matter. A - Valve body; B - Inlet; C - Outlet; D
- Valve opening to provide access; E - Valve stem; F - Valve
seating surface; G - Annular valve seat; H - Cylindrical
recess to support "G"; J - Hole in valve body intersects
recess "H" to receive rod "L"; K - Plug to close hole "J"; L
- Rod facilitates seat removal.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 316-317.01 for
a replaceable seat or interface seal for a rotary valve or
subclasses 360-363 for a removable valve seat, especially
subclass 363 for a removable valve seat with a seal.
Subclass:
315.21
With top entry valve:
This subclass is indented under subclass 315.2. Subject
matter wherein the upper part of the flow regulating means
can be dismounted by being withdrawn vertically up from the
housing of the regulating means while the lower part remains
inside the housing so that the seat and the seal adapter of
the regulating means can be inspected, overhauled, or
replaced without the regulating means being discontinued from
the flow passageway. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Valve body; B - Fluid
passages; C - Valve element; D - Trunion; E - Socket; F -
Plate removable from top; G - Trunion; H - Valve seats; J -
Valve seat shoulder.
SEE OR SEARCH THIS CLASS, SUBCLASS:
327-328, for a disassembly tool engaging feature.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 315.12 for a ball
valve having a housing construction that allows head
removable from actuator side (i.e., top entry).
Subclass:
315.22
Butterfly valve:
This subclass is indented under subclass 315.17. Subject
matter wherein the significance is attributed to a valve
comprising a substantially flat and coplanar wing depending
from a central axis of rotation. [figure] [caption]Figure 1:
A typical example of the subject matter. A - Pipe, duct, or
conduit; B - Throttle or butterfly valve; C - Adjustable
drive motor; D - Valve stem or rod.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.25 for a process of assembling, disassembling, or
repairing a butterfly valve.
601.17 for systems dividing into parallel flow lines then
recombining including a butterfly valve.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, subclasses 74.1-92.1 for
a louver-type closure (e.g., slats, panels, etc.).
123, Internal Combustion Engines, subclass 337 for a
specific throttle valve structure (e.g., butterfly, etc.).
220, Receptacles, subclasses 810-849 for a hinged closure.
251, Valves and Valve Actuation, subclasses 305-308 for a
rotary butterfly valve.
454, Ventilation, subclasses 333-336 for an inlet air way
having an adjustable valve (e.g., damper, etc.) or subclass
369 for a fire damper.
Subclass:
315.23
Having valve head or seat packing:
This subclass is indented under subclass 315.22. Subject
matter comprising a sealing material or element carried by
the disk part of the valve or the circular ring on which the
disk part rests. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Valve seat; B - Valve
stem; C - Butterfly leaf; D - Ring packing.
SEE OR SEARCH CLASS:
228, Metal Fusion Bonding, subclasses 165-169 for a process
of forming a channel, groove, or an aperture for the
reception of a filler material prior to bonding.
251, Valves and Valve Actuation, subclass 171 with means to
press the seat to the valve to increase contact pressure and
packing pressed by a gland or subclasses 306-307 for a head
or seat packing for a rotary butterfly valve.
285, Pipe Joints or Couplings, subclasses 364-368 for a
packed, clamped, or flanged pipe joint or coupling.
Subclass:
315.24
With head and stem connections:
This subclass is indented under subclass 315.22. Subject
matter comprising means for attaching the disk part of the
valve and the rod element by means of which the disk part is
moved to open and close the valve. [figure] [caption]Figure
1: A typical example of the subject matter. A - Valve closure
member; B - Valve shaft; C - Joint connections for valve; D -
Boss; E - First valve passage receives shaft end "F"; G -
Second valve passage; H - Shaft end driven by hand or power
driven means; J - Tapered key; K - Groove on shaft "B" to
engage key "J"
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 308 for head and
stem connections of the rotary butterfly valve.
384, Bearings, subclasses 202-204 for a self-adjusting or
self-aligning resilient plain bearing.
Subclass:
315.25
Plug valve:
This subclass is indented under subclass 315.17. Subject
matter comprising a cylindrical or conical element that can
be turned to rotate on its own axis and has a flow passage
through it and at least the inlet or outlet of that passage
is transverse to the axis of rotation. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Valve body; B - Tapered bore to receive plug valve; C -
Plug valve; D - Inlet passage; E - Outlet passage; F -
Through port in valve open position; G - Valve chamber cover;
H - Valve stem; J - Biasing spring; K - Seal ring.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.24 for a process of assembling, disassembling, or
repairing a plug valve.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 554 for a rotary plug type flow
controller.
251, Valves and Valve Actuation, subclasses 309-312 for a
plug valve or subclass 904 for a snap-fit plug valve.
Subclass:
315.26
Having retainer at actuator end:
This subclass is indented under subclass 315.25. Subject
matter wherein means for holding the plug valve head in the
body is one the same side of the head as the valve mechanism
that is being used for opening or closing the valve. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Valve body; B - Valve chamber; C - Valve plug or element;
D - Valve stem; E - Valve handle; F - Inlet passageway; G -
Outlet passageway; H - Hollow open end of "C"; J - Inner end
of "D" is disposed without "J".
Subclass:
315.27
Assembling or disassembling reciprocating valve:
This subclass is indented under subclass 315.01. Subject
matter wherein the flow regulating means has a linear motion
to and from the flow obstructing position. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Valve body; B - Valve seat; C - Valve element; D - Inlet
fluid conduit; E - Outlet fluid conduit; F - Lower fluid
chamber; G - Upper fluid chamber; H - Internal wall; J -
Valve stem; K - Valve handle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
625.48-625.5, for a multi way reciprocating valve unit.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 282 for a
reciprocating valve that uses differing opposing surface
areas to balance forces exerted by differing pressures or
subclasses 318-334 for a reciprocating valve.
Subclass:
315.28
Having particularly packed or sealed mechanical movement
actuator:
This subclass is indented under subclass 315.27. Subject
matter wherein the valve stem that transmits motion to the
valve is specifically associated with means which is being
assembled into a compact group or is being firmly secured to
prevent fluid leakage. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Face stem; B - Bonnet; C,
D - Bonnet peripheral surfaces connect to face stem "A"; E -
Packing sleeve engages bonnet "B"; F - Outer "O" ring
provides seal between "E" and "B"; G - Packing assembly made
of plurality of packing rings "H"; H - Packing rings; J -
Packing bushing.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 214 for a
particularly packed or sealed mechanical movement actuator or
subclass 330 for a reciprocating valve having an actuator
controlled stem seal.
277, Joints and Packing, subclass 511 for a circumferential
contact seal for other than a piston between relatively
movable parts (i.e., dynamic seal) contained or compressed by
gland member in packing box having installation, removal,
assembly, disassembly, or repair feature or subclass 630 for
a contact seal for other than internal combustion engine, or
pipe, conduit, or cable between fixed parts or static contact
against relatively movable parts having installation,
removal, assembly, disassembly, or repair feature.
Subclass:
315.29
Gate valve:
This subclass is indented under subclass 315.27. Subject
matter wherein the valve comprises essentially a flat or
wedge-shaped sliding barrier that can be lowered into a seat
to seal off the flow or raised into an external recess for a
partial or full flow condition. [figure] [caption]Figure 1: A
typical example of the subject matter. A - Valve body; B -
Bonnet; C - Valve stem mechanism; D - Gate valve; E, F - Seal
assemblies; G, H - Flow passages; J - Valve stem; K - Valve
operator; L - Valve hand wheel.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.23 for a process of assembling, disassembling, or
repairing a reciprocating gate valve.
625.49 for systems having a multi way valve unit that uses a
reciprocating combined disk or plug for closing one port and
a gate or piston valve for closing another port.
SEE OR SEARCH CLASS:
251, Valves and Valves Actuation, subclasses 326-329 for a
reciprocating gate valve.
Subclass:
315.3
Bifaced:
This subclass is indented under subclass 315.29. Subject
matter wherein the valve head has two seating or sealing
surfaces. [figure] [caption]Figure 1: A typical example of
the subject matter. A - Valve assembly; B - Blind valve
plates; C - Blind valve apertures; D - Resilient seats; E -
Metal inserts; F - Apertured body liners; G - Apertured gate;
H - Gate aperture; J - Hand wheel (rotation of "J" causes "G"
to rise or descend between "F"; K - Sealing plates; L -
Gasket; M - Packing or seal; N - Packing gland.
Subclass:
315.31
Having particular valve seat:
This subclass is indented under subclass 315.29. Subject
matter wherein the significance is attributed to a normally
stationary and usually circular element which cooperates with
the valve. [figure] [caption]Figure 1: A typical example of
the subject matter. A - Valve body; B - Valve bonnet or
cover; C - Wedge-type slide valve; D - Valve seats; E - Flow
passages; F - Valve stem; G - Stuffing box; H - Internal
valve stop; J - Drain.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 359-365 for a
valve seat of general utility.
Subclass:
315.32
Including seal:
This subclass is indented under subclass 315.31. Subject
matter wherein a separate element is being disposed between
the valve seat and the seat supporting body structure to
prevent leakage. [figure] [caption]Figure 1: A typical
example of the subject matter. A, B - Seal members; C -
Through conduit gate valve; D - Valve body; E, F - Aligned
flow passages; G, H - Flanges to connect flow system; J -
Valve chamber; K - Gate having passage "L"; L - Gate valve
open portion; M - Gate valve solid portion; N - Valve stem.
SEE OR SEARCH CLASS:
277, Joints and Packing, subclass 630 for a contact seal for
other than internal combustion engine, or pipe, conduit, or
cable between fixed parts or static contact against
relatively movable parts having installation, removal,
assembly, disassembly, or repair feature.
Subclass:
315.33
Assembling or disassembling check valve:
This subclass is indented under subclass 315.01. Subject
matter comprising flow regulating means which automatically
limits the fluid flow to a single direction and is sensitive
to the fluid pressure.
(1) Note. Since the check valve has not other actuator, its
movement from a normal, neutral, or biased position is caused
solely by a change in the fluid flow or pressure in the
pipeline, and the valve returns to its original position when
the original condition is restored. [figure] [caption]Figure
1: A typical example of the subject matter. A - Check valve;
B - Valve cradle; C, D - Opposed valve counterbores; E -
Inlet head main bore; F - Head member; G - Internal
passageway; H - Valve closure member or disk; J - Interior
valve bore; K, L - Locknuts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
329.1-329.4, for fluid handling with repair, tapping, or
assembly means for a removable valve with a normally disabled
supplemental check valve.
511-543.23, for a line condition direct response valve (i.e.,
check valve type).
904 for a cushion check valve.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 490 for a slitted resilient
diaphragm or nipple or subclasses 491-497 for an outlet
element operated by pressure of contents.
251, Valves and Valve Actuation, subclasses 336-338 for a
biased valve.
Subclass:
315.35
With mechanical movement between actuator and valve:
This subclass is indented under subclass 315.01. Subject
matter wherein the significance is attributed to repair,
assembly, or disassembly of moving parts of the mechanism
that transmit a definite motion to the valve or valve
component. [figure] [caption]Figure 1: A typical example of
the subject matter. A, B, C, D - Constitute valve assembly; E
- Flanged orifice of the container; F - Valve seat; G -
Movable valve member; H - Valve head; J - Valve stem; K -
Valve operating mechanism or mechanical movement actuator; L
- Connecting rod; M - Crank; N - Shaft; P - Operating lever
secured to "N" (not shown); Connecting rod "L" cooperates
with "G" for positive opening of valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.14 for a particular mechanical actuator of a domestic
faucet with assembling or disassembling, or mounting or
removing means.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 129.03 for an
electrically actuated valve with a nonelectrical actuator,
subclass 129.2 for an electrical valve actuator having
mechanical movement between valve and solenoid, or subclasses
213-280 for a mechanical movement actuator.
Subclass:
315.36
Plural motions of valve:
This subclass is indented under subclass 315.35. Subject
matter wherein the mechanical movement actuator provides more
than one movement of the valve or valve component which
movements are concurrent or consecutive.
(1) Note. An example of a mechanical movement that produces
plural concurrent motions of a valve is one in which the
valve member is mounted on a screw device. Actuation of the
screw both rotates and reciprocates the valve member.
[figure] [caption]Figure 1: A typical example of the subject
matter. A - Discharge valve; B - Tubular extension; C - Ringe
flange; D - Threaded extension serves to clamp the operative
position within the container (not shown); E - Hollow body
forming a discharge chamber "F"; G - Discharge outlet; H -
Valve seat; J - Valve closure; K - Washer valve; L - Valve
stem; M - Lug; N - Threaded outer surface; P - Locking disc;
Q - Opening of the hollow body "E". In operation, lug "M",
when turned, causes its threaded outer surface "N" to feed
through the opening "Q" of the hollow body "E", which forms a
discharge chamber "F" and thus moves the washer valve "K"
toward and away from the valve seat "H".
SEE OR SEARCH THIS CLASS, SUBCLASS:
330-333, for a non-valving motion of a valve or valve seat.
616.3 for plural motions of a valve actuated by an
articulated or swinging flow conduit.
SEE OR SEARCH CLASS:
123, Internal Combustion Engines, subclasses 90.28-90.3 for
a poppet valve operating mechanism that provides for
nonvalving movement of the valve (e.g., about the valve,
etc.).
251, Valves and Valve Actuation, subclass 56 for a fluid
actuated or retarded valve having plural operations (e.g.,
lifting and rotating rotary valve, etc.), subclasses 215-227
for a mechanical movement actuator having plural motions of a
valve, subclass 296 for plural motions of an actuator,
subclass 346 for a valve actuator in a valve casing or
extension of it having plural motions of valve, or subclass
351 for a valve actuator in an inlet or outlet having plural
motions of valve.
Subclass:
315.37
Lever type:
This subclass is indented under subclass 315.35. Subject
matter wherein the mechanical movement actuator comprises an
elongated rigid means pivoted at one point to a support and
having the actuating power and the valve connection at at
least two other points. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Hollow valve body; B, C -
Inlet and outlet channels; D, E - Valve flanges; F - Rotary
plug; G - Plug passageway; H - Valve seal; J - Valve operator
mechanism; K - Lever arm; L - Outer tubular handle; M -
Operator housing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
434-451, for a float arm operated valve.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, appropriate subclasses for
a mechanical movement actuator including a lever.
251, Valves and Valve Actuation, subclasses 231-247 for a
lever actuated mechanical movement actuator.
Subclass:
315.38
Gear type:
This subclass is indented under subclass 315.35. Subject
matter wherein the mechanical movement actuator comprises (1)
relatively movable toothed members, round, linear, or
irregular, which transmit motion by meshing of the teeth
during travel of the members, and (2) friction gearing in
which the members lack teeth, and the force is transmitted by
pressing one moving surface against the other, including
those have one endless flexible member or belt. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Body of the gauge cock or valve; B - Connection to wate
gauge or other article; C - Disc closure or cutoff; D - Valve
operating handle; E - Valve stem; F - Valve plug coacts with
valve seat "G"; G - Valve seat. [figure] [caption]Figure 2: A
typical example of the subject matter. A - Body of the gauge
cock or valve; B - Connection to water gauge or other
article; C - Disc closure or cutoff. Notes (1) Rotation of
the collar "H" (see Figure 1) causes the rotation of the
cutoff or disc closure "C"; this motion is being transmitted
through the gear or gear element "M" (Figure 1), through gear
"J" (see Figure 1), the gear shaft "K" (see Figure 1), pinion
"L", and the gear or gear element "N". (2) The pinion "L"
that meshes with the gear or gear element "N" is formed on
the disc closure or cutoff "C" and is segmental type located
on the arcuate slot "P" formed in cutoff "C".
SEE OR SEARCH THIS CLASS, SUBCLASS:
446 for a float arm actuated valve with interposed cam,
gear, or threaded connection.
SEE OR SEARCH CLASS:
74, Machine Element and Mechanism, subclasses 640-468 for
gearing.
475, Planetary Gear Transmission Systems or Components,
appropriate subclasses for planetary gearing.
Subclass:
315.39
Cam type:
This subclass is indented under subclass 315.35. Subject
matter wherein the mechanical movement actuator comprises an
eccentrically mounted rotating or swinging member or members,
the varying radii of which produce varying positions of the
valve. [figure] [caption]Figure 1: A typical example of the
subject matter. A - Actuator knob; B - Actuator handle; C -
Bearing portion; D - Cylinder bore; E - Valve stem; F - Pin;
G - Slot; H - Valve; J - Actuator. Note: The bearing portion
"C" is rotatable in bore "D" and axis of bore "D" is offset
from axis of valve stem "E"; Pin "F" or slot "G" provide a
connection between actuator "J" and valve "H"; pin "F" is
eccentric to axis of bore "D".
SEE OR SEARCH THIS CLASS, SUBCLASS:
446 for a float arm actuated valve with interposed cam,
gear, or threaded connection.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, appropriate subclasses
under mechanical movements for cam type movements, and
subclasses 567-569 for a cam element.
251, Valves and Valve Actuation, subclasses 251-263 for a
cam type mechanical movement actuator.
Subclass:
315.4
Screw type:
This subclass is indented under subclass 315.35. Subject
matter wherein the mechanical movement actuator comprises a
simple machine consisting of a spirally grooved solid
cylinder and a correspondingly grooved hollow cylinder of
equal dimension which is operable to reciprocate the movable
valve member through connecting means but does not impart the
rotary motion of the machine to the valve member. [figure]
[caption]Figure 1: A typical example of the subject matter.
A, B - Valve end portions; C - Cylinder externally threaded
at "D"; E - Elongated needle valve; F - Hollow cap type
actuator internally threaded at "G".
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.36 for a particular mechanical actuator having plural
motions of a valve flow control member with repair, tapping,
assembly, or disassembly means.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 264-278 for a
screw type mechanical movement actuator.
Subclass:
315.41
Tool for applying or removing valve or valve member:
This subclass is indented under subclass 315.01. Subject
matter wherein the significance is attributed to the specific
features of the instrument that is being used for
manipulating the flow regulating means or its component.
[figure] [caption]Figure 1: A typical example of the subject
matter. A - Valve spring compression tool; B - "C" frame; C -
Fixed pad; D - Aperture; E - Movable pad; F - Structure to
move "E" toward or away from "C"; G - Valve; H - Valve
washer; J - Valve spring; K - Valve stem; L - Engine block.
Note: When "G" bears against "E" and "H" against "C", "J" is
compressed and valve "G" is disassembled.
SEE OR SEARCH CLASS:
29, Metal Working, subclasses 213.1-221.6 for a valve
applying or removing means, especially subclass 214 for an
engine valve unit puller or applier and subclass 221.6 for a
valve removal tool.
30, Cutlery, subclasses 93-108 for a rotary pipe or rod
cutter.
81, Tools, subclasses 15.2-15.7 for a repair tool for a
resilient tire.
220, Receptacles, subclasses 284-286 for a closure having
special tool or tool engaging means for opening.
251, Valves and Valve Actuation, subclasses 157-204 for
means to increase head and seat contact pressure.
Subclass:
315.42
Including sealing feature:
This subclass is indented under subclass 315.41. Subject
matter wherein the significance is attributed to a tool which
is being used for temporarily sealing a valve connection to a
conduit or a tool for blocking or precluding flow of fluid
through a conduit means, from a tank, or from a similar fluid
containing vessel. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Opening to be sealed; B -
Hollow support; C - Actuating rod; D - Flanged collar; E -
Annular seal; F - Washer; G - Series of links; H - Nut; J -
Clamp block.
SEE OR SEARCH CLASS:
29, Metal Working, subclass 890.11 for a method of
mechanical manufacture for a tapping device making.
Subclass:
316
This subclass is indented under subclass 315.01. Devices
having combined with a part of the device a fixture,
attachment, support, or stop, which is inoperative in the
assembled operating device, for (1) supporting and/or
aligning parts of the device during assembly or disassembly,
or (2) for immobilizing a moving part of the device other
than an actuator or taking the pressure off a wear surface to
permit transportation or safe storage.
SEE OR SEARCH CLASS:
29, Metal Working, 700 for assembling or disassembling
apparatus of general application.
251, Valves and Valve Actuation, 89 for devices having means
to hold an actuator in a desired position to prevent
accidental or unwanted movement of the valve or controller.
269, Work Holders, appropriate subclasses for workholders of
general application.
Subclass:
317
This subclass is indented under subclass 315.01. Devices in
which access is gained to a closed container or system by
means of a connectable device or tap which comprises a flow
passage to receive material from the system and means to form
an opening in or open a closed passage of the system, either
by removing a plug or by opening a valve which has no other
actuating means, the connection being made in a manner which
prevents loss of material from the system and/or admission of
extraneous matter to it.
(1) Note. The connectable flow passage forming element is
usually a tap for a beer keg, but irrigation system couplings
and other analogous devices are included, the source being a
stationary type and the tap being portable or in the nature
of an attachment.
(2) Note. Antisplash guards comprising baffles or packing
means around the entering portion of the tap are included in
this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.12-15.15, for a process of tapping a pipe or tank (e.g.,
gas main, water main, keg, etc.).
209 for means for supplying gas to pressure systems
containing gas and another fluid, especially subclass 212 for
beer taps with gas pressure inlets.
453 for barometric liquid level maintaining systems,
especially subclass 454 for those having a removable font
provided with a cut-off operable by engagement with the
support-receiver, and see the search notes to subclass 454.
614.02 and 614.05, for separable, valved, flow path
sections, at least one of the valves being operated by the
joining of the sections.
SEE OR SEARCH CLASS:
29, Metal Working, 213.1, for structure for assembling valve
parts, including assembling by use of a pressurized
container.
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, 329 for puncturing type connecting means
and, subclasses 346+ for filling devices for receivers having
keyed or other special coupling means.
217, Wooden Receptacles, 98 for barrel bungs, especially
subclasses 99+ for valved bungs.
251, Valves and Valve Actuation, subclass 89.5 and
subclasses 149+ for a valved flow path section joined to
another section, the act of joining causing the valve to
open, subclass 89.5 also including features of the joint
which may block or disable the valve actuator.
Subclass:
318
This subclass is indented under subclass 317. Devices in
which the connectable means carries a cutter or punch for
making the opening in the closed system through which flow
will occur. The aperture may be formed at the time the
connection is placed, or subsequently by operation of means
carried by the connectable means.
SEE OR SEARCH CLASS:
222, Dispensing, 80 for dispensers having means to form an
aperture in the supply container or receiver, and see section
19 of the main class definition for collected notes on this
subject matter.
408, Cutting by Use of Rotating Axially Moving Tool,
appropriate subclasses for cutting in that class manner in
the absence of fluid handling structure, except when fluid
handling is ancillary to the cutting operation. For cutting
of Class 408 combined with ancillary fluid handling, search
56 of Class 408.
Subclass:
319
This subclass is indented under subclass 317. Devices in
which the system has an opening closed by a plug, cap, cork
or other imperforate closure, and the connectable part has
means to engage, completely remove and hold the closure,
which may or may not be replaced in closing position upon
disconnection of the parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
320 for screw or friction held closures which have flow
passages therein, so that when partially displaced they serve
as valves.
324 for taps and related devices which merely push the bung
or cork out of the opening, allowing it to fall inside the
keg or container.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, subclass 38 for devices for removing and
holding tire valve cores while water is forced into the
tire.
Subclass:
320
This subclass is indented under subclass 317. Devices in
which the system is provided with a valved opening, the valve
having no externally operable actuator, and the connectable
means either opens the system valve as the coupling is made
or carries an actuator which engages the valve as a result of
the coupling, being manipulated subsequently to open and
close the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
223 for inflatable article filling chuck and/or stem.
454 for removable barometric reservoirs having valves which
are operated by engagement with the receiving and supporting
receptacle and see the search notes thereto.
614 for disconnectable flow pipe sections with plural serial
valves.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, subclass 346 for filling devices for
receivers having keyed or other special coupling means.
217, Wooden Receptacles, 99 for barrel bungs of the valved
type.
Subclass:
321
This subclass is indented under subclass 320. Devices in
which the valve means of the system comprises a head which
moves axially and rotationally with respect to its seat,
usually as a result of being engaged with a screw type
actuator or tap.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 215 for valves of general
utility operated by a mechanical movement which imparts
plural movements to the valve head.
Subclass:
322
This subclass is indented under subclass 320. Devices in
which the valve opens with a straight line motion with
reference to the axis or the outlet when engaged by the
connectable device or the actuator carried thereby.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 318 for reciprocating
valves and their actuators, and see the search note thereto.
Subclass:
323
This subclass is indented under subclass 320. Devices in
which the valve rotates around the axis of the flow path when
actuated by engagement with the connecting means at the
attached flow device or by the actuator carried thereon.
Subclass:
324
This subclass is indented under subclass 317. Devices in
which the system is closed by a bung or cork or other
frictionally held closure and the connectable part has a
portion, usually tapered, which enters the opening so closed
and pushes or drives out the closure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
319 for similar devices in which the closure though driven
entirely from the opening, remains impaled on or secured to
the tapping device.
SEE OR SEARCH CLASS:
222, Dispensing, 80 for similar devices comprising
dispensers.
Subclass:
325
This subclass is indented under subclass 324. Devices in
which the connectable or tapping member is forced into the
opening by blows delivered by a means which is ordinarily not
part of the system, the member being provided merely with a
surface designed to receive the blow.
Subclass:
326
This subclass is indented under subclass 315.01. Devices
comprising a container having an access opening at the top
and a valve located in a part of the container remote from
the access opening usually at the bottom, with means for
disassembling and removing the valve and/or its seat through
the access opening.
SEE OR SEARCH THIS CLASS, SUBCLASS:
283 for hydrants having a removable valve and valve seat.
584 for dispensing systems comprising a tank having an
access opening and a fluid inlet or outlet, and see the
search notes to subclass 584.
Subclass:
327
This subclass is indented under subclass 315.01. Devices one
or more parts of which have a member for interlocking with a
tool for disassembling the part or disengaging the part from
the device.
(1) Note. The member must be something in addition to the
configuration of the part or of means used to secure parts
together.
Subclass:
328
This subclass is indented under subclass 327. Devices in
which the interlocking means are projections or ears for
engaging the jaws of a wrench.
Subclass:
329
This subclass is indented under subclass 315.01. Devices
having a part or parts made in attached duplicate form or of
extensive area movably mounted in such a manner the worn or
injured part may be replaced by a duplicate part or another
unworn surface to restore the device to its former
condition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
269 for devices which by movement of a part to a different
orientation change the mode of operation of the device.
Subclass:
329.01
This subclass is indented under subclass 329. Devices
relating to valve heads and/or seats.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.18-15.26, for a process of assembling, disassembling, or
repairing a valve or valve member.
Subclass:
329.02
This subclass is indented under subclass 329.01. Devices
having oppositely disposed duplicate surfaces forming a
unitary structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.13 for assembling, disassembling, mounting, or removing
a domestic faucet having a unitized valve head and seat.
Subclass:
329.03
This subclass is indented under subclass 329.02. Devices
relating to an homogeneous material forming the surfaces and
their intermediate support.
Subclass:
329.04
This subclass is indented under subclass 329.03. Devices
relating to valve heads.
Subclass:
329.05
This subclass is indented under subclass 329.01. Devices in
which different portions of the same surface are adjusted to
a certain position to form a valve interface.
Subclass:
329.06
This subclass is indented under subclass 329.01. Devices in
which are stored adjacently a plurality of separate elements
forming duplicate surfaces successively used.
Subclass:
329.1
This subclass is indented under subclass 315.01. Apparatus
in which the main valve is arranged to be removable and a
supplemental check valve is provided upstream, biased to
close by fluid pressure and/or a spring; the check-valve
being maintained inoperative in normal use of the main
valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
285 for a hydrant having a removable valve with a
supplemental check valve.
300 for a hydrant having a supplemental valve.
301 for a hydrant having protection against freezing.
315.33 for a check valve (e.g., non-return valve, etc.) with
assembling or disassembling means.
512-513, for plural line condition direct response valves
(i.e., check valve type).
613-614.21, for system shaving a flow line with serial valves
or closures.
Subclass:
329.2
This subclass is indented under subclass 329.1. Devices in
which the check valve is biased opened by a part of the main
valve which is movable in normal usage of the main valve.
Usually a spacer or projection between the check valve and
main valve is provided.
Subclass:
329.3
This subclass is indented under subclass 329.2. Devices in
which the check valve is of the ball-check type.
Subclass:
329.4
This subclass is indented under subclass 329.2. Devices
having a spring bias to close the check valve or to
supplement the bias of the fluid.
Subclass:
330
This subclass is indented under the class definition.
Apparatus in which means is provided for moving either a
valve or a valve seat with respect to its cooperating member
independently of opening or closing movement in such a
direction or between such limits as to be ineffective to open
or close the valve, usually to reduce friction or to prevent
sticking or to equalize wear.
(1) Note. This subclass does not include a rotation of a
reciprocating valve after it is seated merely for the purpose
of perfecting the seating of the valve or any other movement
which is performed as a part of the normal actuation of the
valve. Such patents are classified on the basis of the
actuator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
242 for movements of valves in mechanical cleaning.
329-329.06, for systems having repair by providing alternate
wear part.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 56 for pressure
actuated valves with plural motions of the valve, and
subclasses 215+ for mechanical movement actuated valves with
plural motions of the valve, and see the search notes
thereto.
Subclass:
331
This subclass is indented under subclass 330. Apparatus
which provides means for imparting rotary motion to a
reciprocating valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
56 for reciprocating valves which continuously rotate with a
speed responsive actuator.
243 for valve grinding movement of a reciprocating valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 215 for valves and their
actuators in which the valves have plural diverse motions, as
rotating and reciprocating.
Subclass:
332
This subclass is indented under subclass 331. Apparatus in
which the rotating means is a turbine mounted on the valve or
valve stem.
SEE OR SEARCH THIS CLASS, SUBCLASS:
499 for condition responsive valve actuation by a turbine
reactor connected to the valve, and see the search notes
thereto.
Subclass:
333
This subclass is indented under subclass 331. Apparatus in
which a manual actuator is provided for rotating the valve.
Subclass:
334
This subclass is indented under the class definition. Fluent
material device to which has been added means for heating or
cooling the device or the fluent material.
(1) Note. This subclass does not include heating or cooling
of the system by the transfer of heat between the fluent
material and the device or from one part of the fluent
material to another except where a part of the fluent
material is diverted to heat or cool the device or where part
of the fluent material in a separate channel is placed in
heat exchange relationship with respect to other parts of the
fluent material under conditions of difference in
temperature.
(2) Note. This subclass does not include heating or cooling
to cause actuation of a valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
13 for processes of affecting flow by the use of heat.
241 for steam sterilizing in flow handling systems.
297 for hydrants with heaters.
468 for thermally responsive valves, and see the search
notes thereto.
564 for thermal type closed circulating systems.
599.14-599.15, for systems dividing into parallel flow lines
then recombining having a bypass including a cleaning,
treating, or heat transfer feature.
SEE OR SEARCH CLASS:
62, Refrigeration, appropriate subclasses for refrigeration
processes and apparatus for cooling a material, particularly
45.1 for process and apparatus for handling liquefied gas as
a commodity including steps or means involving pressure or
temperature control special to liquefied gas and more than
required for other liquids, and subclasses 389+ for a
withdrawable liquid cooler and subclass 404 for a gas (air)
cooler.
123, Internal-Combustion Engines, subclass 142.5 for
internal combustion engines with heating means.
138, Pipes and Tubular Conduits, 32 for devices for thawing
pipes and tubular conduits.
165, Heat Exchange, appropriate subclasses for means for
handling fluid for heat exchange purposes.
222, Dispensing, subclass 113 for dispensers with burners
and subclass 146 for dispensers with other heating and
cooling means.
251, Valves and Valve Actuation, subclass 11 for heat motor
actuated valves.
Subclass:
335
This subclass is indented under subclass 334. Apparatus in
which the source of heat for the device includes a burner.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 113 for dispensers with burners.
Subclass:
336
This subclass is indented under subclass 335. Apparatus in
which an enclosed passageway for gases and flames from the
burner extends through the fluid.
Subclass:
337
This subclass is indented under subclass 334. Fluid handling
systems comprising hot and cold water systems having a cross
connection from the hot water channel to the cold water
channel to permit flow of hot water to the cold water
channel.
(1) Note. This subclass includes antifreeze thermosiphons
and no-drain devices for hot water tanks.
SEE OR SEARCH THIS CLASS, SUBCLASS:
59 and 118+, for flow diverting means responsive to freezing
or other temperature variations.
563 for distribution systems providing continuous
circulation of fluid therein, especially subclass 564 for
thermal circulating systems.
602 for systems comprising multiple inlets with a single
outlet, especially subclasses 888+ and 896+ for mixing
valves; and see the search notes to subclasses 888 and 896.
Subclass:
338
This subclass is indented under subclass 334. Fluid handling
systems in which (1) air as a heating or cooling fluid for
the system has a thermally caused movement through channels
whereby it is warmed by contact with the earth and/or an
object buried in the earth, such as a pipe line; or (2) the
fluent material system or a part thereof is equipped with a
fan or fins to aid in the heating or cooling of the device or
the fluid by heat exchange with the air.
SEE OR SEARCH THIS CLASS, SUBCLASS:
564 for distribution systems involving closed circulating
systems of the thermal type.
SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, subclass 41 and 52.1+ for
air cooled internal combustion engines.
Subclass:
339
This subclass is indented under subclass 334. Apparatus in
which a part of the fluid is diverted in a separate channel
to heat or cool the device or a part thereof, or to heat or
cool another part of the fluid that has assumed a different
temperature.
(1) Note. See the definition of subclass 334, (1) Note.
Subclass:
340
This subclass is indented under subclass 334. Apparatus in
which a heating or cooling medium circulates in a channel
which is in heat exchange relationship with the fluent
material device or part thereof.
(1) Note. This subclass includes only devices in which the
heating or cooling medium is maintained separate from the
fluent material normally operated on by the device. There is
no mixing of the medium and the fluent material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
375 for jacketed flow devices in which the jacket may
contain heating or cooling means or fluid, but in which there
is no means for causing or directing circulation within the
jacket.
SEE OR SEARCH CLASS:
165, Heat Exchange, appropriate subclasses for fluid handling
means as an adjunct to heat exchange means.
Subclass:
341
This subclass is indented under subclass 334. Apparatus in
which an electric heating element is used to heat the fluid
or the device or a part thereof.
(1) Note. Electric elements used to actuate parts of the
fluent material device, such as a valve, and which are in the
flow path of the fluent material, are not included in this
subclass even though they incidentally may heat the fluent
material as an inherent part of their mode of operation,
since they are not effective as heat exchange means except
during valve actuation. Such devices have been classified as
valve actuators.
SEE OR SEARCH THIS CLASS, SUBCLASS:
66 for thermoelectric combustion failure responsive fuel
safety cut-offs for burners.
76 for heaters for destructible or fusible elements in
safety cut-offs.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, subclass 33 for electric
thawing and freeze protection for pipes and tubular
conduits.
219, Electric Heating, 628 for inductive fluid heating,
subclasses 687+ for microwave fluid heating, and subclass 772
for the capacitive dielectric heating of fluent materials,
and subclasses 280+ for other electric fluid heating
apparatus.
251, Valves and Valve Actuation, subclass 11 for electrical
heat motor valve actuators, and subclasses 139 and 140 for
solenoid operated valves where the solenoid is within or
surrounds the flow path. See (1) Note above.
Subclass:
342
This subclass is indented under the class definition.
Apparatus comprising a fluent material handling device
combined with a fixture or attachment carried by the device
or a part thereof exterior of the flow path for supporting
material or articles that may be used in conjunction with the
device or its contents or for supporting persons, usually
workmen who are tending the fluent material handling device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
268 where the material is held within the flow to be
dissolved or entrained.
374 for fluid handling systems combined with articles of
furniture where no specific support for other articles or
material, such as a shelf, is claimed.
SEE OR SEARCH CLASS:
182, Fire Escape, Ladder, or Scaffold, subclass 52 for a
fluid conduit serving as a support for a ladder or scaffold.
222, Dispensing, subclass 192 for dispensers combined with
supports for additional articles, as tools, oil cans,
mirrors, or advertising material.
Subclass:
343
This subclass is indented under the class definition.
Apparatus comprising (1) fluid handling devices combined with
means for supporting the device or a part thereof relative to
means external to the device; (2) the combination of such
devices or parts thereof with an enclosing member, fixture,
or attachment to (a) protect the device or part thereof from
soil, contamination, injury, theft or loss; or (b) protect
persons or things from injury through contact with the system
or a part thereof.
(1) Note. This subclass does not include supports or
connectors between parts of the same fluent material system.
The combination of such supports with elements of the system
may be found in the subclass involving the pertinent elements
of the fluid distributing system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
342 for systems having supporting means for material or
things external to the system, including workmen's supports.
SEE OR SEARCH CLASS:
73, Measuring and Testing, subclass 201 for meter boxes.
222, Dispensing, subclass 102, 131, 142.2, 142.3, 144, 160+,
and 173+ for dispensers having casings and/or external
supports, and see the notes to subclass 173.
239, Fluid Sprinkling, Spraying, and Diffusing, 130 and 146+
for spray apparatus having mobile supply and discharge,
subclasses 722+ for sprayers having ambulant discharge and
stationary supply, subclasses 200+, 225.1+ and 273+ for
devices having nonambulant supply and discharge, subclass 168
for fluid sprinklers having hose holders and a fluid supply,
and subclasses 288+ for guards and/or protectors for the
apparatus or for the operator.
248, Supports, 49 for pipe and cable supports, 75+ for hose
and nozzle supports, 102+ for nursing bottle supports, 108+
for past tube supports, 128+ for movable receptacle supports
and 146+ for supports for stationary receptacles.
251, Valves and Valve Actuation, 143 for the mounting of
valves on other parts of a fluid handling device.
285, Pipe Joints or Couplings, subclass 19, 131.1 and 136.1+
for pipe and plate or box couplings, 149.1+ for pipe and box
couplings, and 189+ for pipe and plate couplings.
Subclass:
345
This subclass is indented under subclass 899. Apparatus in
which the casing, support or protector is a locomotive or a
part thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
156 for gas pressure discharge of liquid feed-traps to
boilers.
SEE OR SEARCH CLASS:
105, Railway Rolling Stock, 26 for locomotives, especially
subclasses 37+ for steam locomotives.
239, Fluid Sprinkling, Spraying, and Diffusing, subclass 173
and 174 for sprayers attached to track guided cars and
locomotive cabs.
291, Track Sanders, 3 for fluid delivery in track sanders.
454, Ventilation, 84 for locomotive cab ventilation.
Subclass:
346
This subclass is indented under subclass 345. Apparatus in
which the casing or protector is the boiler or steam dome of
a locomotive.
Subclass:
347
This subclass is indented under subclass 899. Apparatus in
which the casing support or protector is a railroad car or a
part thereof.
SEE OR SEARCH CLASS:
62, Refrigeration, appropriate subclasses, particularly 239
for a refrigerated vehicle.
105, Railway Rolling Stock, 238.1 for a special railway car
body, especially subclasses 358+ for tank cars.
213, Railway Draft Appliances, subclass 76 for the
combination of a car coupling and a train line (fluid
conduit) coupling.
454, Ventilation, 83 for ventilation of railway cars.
Subclass:
348
This subclass is indented under subclass 347. Apparatus in
which the supports, casing or protector is the car frame or a
part thereof.
SEE OR SEARCH CLASS:
105, Railway Rolling Stock, 396 for car framing.
Subclass:
349
This subclass is indented under subclass 347. Apparatus in
which the support casing or protector is the end or end wall
of car.
Subclass:
350
This subclass is indented under subclass 347. Apparatus in
which the support, casing or protector is the roof, wall or
floor of a railroad car.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247.11 especially subclasses 247.33, 247.35, 247.37, and
247.39 for liquid sealed refrigeration car drain
installations.
354 for fluid handling devices installed in the floor of a
vehicle.
360 and 362, for fluid handling devices installed in the
wall or floor of a building.
Subclass:
351
This subclass is indented under subclass 899. Apparatus in
which the casing, support or protector is a self propelled
land vehicle that contains within itself means of motion and
direction control.
SEE OR SEARCH THIS CLASS, SUBCLASS:
38 for fluent material handling devices controlled by the
position or inertia of the system, especially subclass 43 for
safety oventurn valves.
47 for speed responsive valve control.
345 and 347+, for fluid handling means installed in railway
rolling stock.
479 for combustion engine type valves responsive to suction
in the intake system.
598 for hill holders in fluid pressure braking systems.
SEE OR SEARCH CLASS:
105, Railway Rolling Stock, 239 for dump type car bodies and
subclasses 358+ for tank cars.
114, Ships, subclass 74 for tankers and subclasses 232+ for
oil distributors for ships.
222, Dispensers, 608 for ambulant dispensers, and see the
search notes to subclass 608.
239, Fluid Sprinkling, Spraying, and Diffusing, 130 and 146
for sprayers having ambulant supply and discharge, and
subclasses 722+ for spraying devices having ambulant
discharge and stationary supply.
244, Aeronautics, subclass 136 for material discharging and
diffusing from aircraft.
258, Railway Mail Delivery, appropriate subclasses,
especially 1.2 for refueling aircraft in flight.
280, Land Vehicles, 830 for tank type land vehicles.
291, Track Sanders, appropriate subclasses, especially 3 for
the fluid delivery type.
Subclass:
352
This subclass is indented under subclass 351. Apparatus in
which a fluid control means or fluid delivery device is
mounted on or associated with the steering post or steering
wheel of the vehicle.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, 491 for hand controlled
lever and linkage systems, and 552+ for hand wheels.
180, Motor Vehicles, subclass 78 for a motor vehicle having
a controlling device which is mounted on the steering post or
handle.
Subclass:
353
This subclass is indented under subclass 351. Apparatus in
which the fluid handling device is mounted on or associated
with the dashboard of automobile.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 289 and 295 for
valves provided with actuating means operable from stations
more or less remote from the valve, and see the search notes
to these subclasses.
Subclass:
354
This subclass is indented under subclass 351. Apparatus in
which the fluid handling device is mounted on or associated
with the floor or frame of the vehicle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
348 and 350, for fluid handling devices associated with the
frame or floor of a railway car.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 295 for pedal
operated valve devices, and see the search notes thereto.
Subclass:
355
This subclass is indented under subclass 351. Apparatus in
which the fluid handling device is mounted on or associated
with the fender or running board of the vehicle.
SEE OR SEARCH CLASS:
224, Package and Article Carriers, 42.32 for vehicle fender
attached package and article carriers.
251, Valves and Valve Actuation, subclass 289 and 295 for
valves provided with actuators having extensions or remote or
plural terminals which might extend from a valve mounted on a
vehicle to a fender or running board, and see the search
notes to these subclasses.
Subclass:
355.12
This subclass is indented under subclass 899. Apparatus
having a revolvable means for storing a flexible flow line
mounted on the vehicle or on a part thereof.
SEE OR SEARCH CLASS:
239, Fluid Sprinkling, Spraying, and Diffusing, subclass 199
for ambulant reel and ground supported frame for flexible
flow line storage including nozzle detail.
Subclass:
355.16
This subclass is indented under subclass 343. Apparatus
comprising a storage type, use and nonuse holding and
supporting means, and/or rewind or retracting means for a
flexible conduit combined with some element or elements of
the fluid supply means.
(1) Note. Included herein are hose brackets adapted to be
released by distension or inflation of the hose under
pressure of fluid contents.
(2) Note. See Class 239, Fluid Sprinkling, Spraying, and
Diffusing, Miscellaneous Class Notes and Lines, Flexible Flow
LIne Storage or Retrieval of the class definition for a
statement regarding various subcombinations of the above
subject matter as related to various classes.
SEE OR SEARCH CLASS:
239, Fluid Sprinkling, Spraying, and Diffusing, 195 for
combinations of this subject matter and specific nozzle or
outlet arrangement at the terminus of the fluid handling
elements.
242, Winding, Tensioning, or Guiding, 370 for a reeling
device for handling elongated material including a hose
without a specified coupling between a fluid supply and
hose.
Subclass:
355.17
This subclass is indented under subclass 355.16. Apparatus
provided with means for accommodating a plurality of flow
line conduits.
Subclass:
355.18
This subclass is indented under subclass 355.16. Apparatus
provided with a connection between the flow control means for
the fluid and the flow conduit or the storing means therefor
whereby movement of the conduit or its storing means to flow
discharging position actuates the flow control means to fluid
transmitting position.
(1) Note. Flow regulation does not include valves operated
by the jettisoning or uncoupling of the flow line from the
storage or fluid handling system.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 149.8 for a valve
operated by motion of the flow path.
Subclass:
355.19
This subclass is indented under subclass 355.18. Apparatus
in which the flow line storing means is a spool or drum and
movement of the storing means as a consequence of flow line
movement actuates the flow regulating means.
Subclass:
355.2
This subclass is indented under subclass 355.16. Apparatus
provided with means in addition to the hose support or
storage means and its associated support against gravity
means whereby the flow line conduit is returned to its nonuse
or stored position.
(1) Note. A crank mechanism which is connected to the
storing means by a force of speed varying mechanism is
considered to be a return means for this subclass. A mere
crank fixedly attached to a spool or reeling mechanism is
considered as no different from direct contact with such
retrieval mechanism and does not qualify as the additional
means required in this subclass.
SEE OR SEARCH CLASS:
239, Fluid Sprinkling, Spraying, and Diffusing, subclass 197
for a corresponding field of search involving a specific
terminal member.
Subclass:
355.21
This subclass is indented under subclass 355.2. Apparatus
provided with an arresting or checking means acting on the
return mechanism.
(1) Note. A dashpot which slows down the final movement of
the return means is considered to be a power stop or brake
for this subclass.
Subclass:
355.22
This subclass is indented under subclass 355.21. Apparatus
in which the actuation of the arresting or checking element
for the return mechanism responds to the position of the
flexible flow line conduit in its housing, or storage
encasing means.
Subclass:
355.23
This subclass is indented under subclass 355.2. Apparatus
provided with additional means which tends to return the
flexible conduit to its nonuse or stored position.
Subclass:
355.24
This subclass is indented under subclass 355.23. Apparatus
having a relatively long spar or beam to which at least a
portion of the flexible conduit is attached and which is
mounted for movement relative to its support.
Subclass:
355.25
This subclass is indented under subclass 355.23. Apparatus
in which the means tending to return the flexible flow line
to nonuse or stored position is a weight.
Subclass:
355.26
This subclass is indented under subclass 355.16. Apparatus
having a spool or drum on which the flow line is wound or
coiled and provided with structure to support the spool or
drum.
(1) Note. The flow conduit which is ultimately connected to
the flexible flow line conduit may also serve as part of or
all the bearing or support surface for the spool or drum.
Subclass:
355.27
This subclass is indented under subclass 355.26. Apparatus
in which the spool or drum is carried by a frame in contact
with and supported by the ground or floor or other similar
substantially horizontal surface.
Subclass:
355.28
This subclass is indented under subclass 355.16. Apparatus
in which the means for storing the flexible conduit comprises
a frame having a bottom and sides whereby the conduit may be
looped back and forth or convoluted on itself, in both cases
each loop or convolution being contiguous to the next
adjacent.
(1) Note. For classification herein, the hose must not be
suspended but must be in a housing having a bottom on which
the first loop or coil is laid and must have upstanding walls
or elements to retain the folded or coiled hose within the
confines of the holder.
SEE OR SEARCH THIS CLASS, SUBCLASS:
335.16 where the hose is folded and suspended from a single
peg or link.
Subclass:
356
This subclass is indented under subclass 343. Apparatus in
which the support is a structural member immovably joined to
the ground, or in which the casing or protector is immovably
joined to and partially or wholly embedded in the ground.
SEE OR SEARCH THIS CLASS, SUBCLASS:
219 for Larner-Johnson valves, which are commonly used in
underground water systems.
236 for distribution systems involving geos:graphic
features.
272 for hydrants and railway water cranes.
SEE OR SEARCH CLASS:
222, Dispensing, 173 for dispenser supports and subclass 192
for dispensers combined with buildings.
Subclass:
357
This subclass is indented under subclass 356. Apparatus in
which the fluid handling device is mounted in or associated
with a building.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, 301 for
installed systems for air blast and suction cleaning.
52, Static Structures (e.g., Buildings), 11 for a cover with
an eave or valley gutter, subclasses 131+ for a burial vault
with fluid guiding feature, subclass 168 for a building with
a protective liquid supply, subclasses 192+ for a liquid or
fluent material container with a single port, subclasses 198+
for an enclosure with fluid guiding port to a usable space,
subclass 218 for a flue with a fluid directing feature,
subclass 219 for a flue connected to a building structure,
subclasses 220.1+ for a service duct within a barrier of a
building construction, and subclasses 302.1+ for a residual
building construction or component with a plugged vent or
passage between its interior and the ambient.
169, Fire Extinguishers, appropriate subclasses, especially
16 for fluid distributing systems.
222, Dispensing, subclass 192 for dispensers combined with
building structures.
239, Fluid Sprinkling, Spraying, and Diffusing, 200, 225.1+
and 273+ for installed systems of that class, especially
subclasses 209+ for vehicle washers with overhead fixed
supply pipes.
Subclass:
358
This subclass is indented under subclass 357. Apparatus in
which the building has an external casing or pit connected to
the building serving as a housing or a support for part or
all of the fluent material device, and having an opening
exterior of the building providing admittance to portions of
the system.
Subclass:
359
This subclass is indented under subclass 357. Apparatus in
which the fluid handling system includes a member which
surrounds a pipe or pipes and covers the opening through
which the pipe or pipes pass through a wall or floor.
(1) Note. The supports, casings, or protectors found in
this subclass close the opening around the pipe and provide
an ornamental appearance for the arrangement, as well as
supporting and/or centering the pipe in the opening.
SEE OR SEARCH THIS CLASS, SUBCLASS:
296 for caps or covers for hydrant casings.
371 for closures for valve and meter wells.
380 for covers for beer cooler faucet apertures.
SEE OR SEARCH CLASS:
220, Receptacles, 241 for closures of the face plate type.
248, Supports, 49 for pipe and cable supports, especially
subclasses 56+ for the through-plate type.
292, Closure Fasteners, subclass 357 for escutcheon plates
applied to closure latch devices.
Subclass:
360
This subclass is indented under subclass 357. Apparatus in
which the fluid handling device is mounted on or associated
with the wall of a building.
SEE OR SEARCH THIS CLASS, SUBCLASS:
350 for fluid handling devices associated with the wall of a
railway car.
359 for escutcheon type supports for pipes, etc.
Subclass:
361
This subclass is indented under subclass 360. Apparatus in
which the support, casing or protector is a covered space in
the wall of building used for concealing the outlet of a gas
main.
Subclass:
362
This subclass is indented under subclass 357. Apparatus in
which the floor of the building or a part thereof acts as a
support, casing or protector, the relation being other than
that involved in merely setting the device on the floor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247.43 for floor installed liquid seal traps.
350 and 354, for fluid handling systems mounted on or
associated with the floor of a vehicle.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 295 for pedal type
valve actuators passing through the floor of a building.
Subclass:
363
This subclass is indented under subclass 356. Apparatus in
which the support, casing or protector is a means covering at
least a portion of a fluent material system and acting as a
support for the ground around the part.
SEE OR SEARCH THIS CLASS, SUBCLASS:
219 for Larner-Johnson valves.
236 for distribution systems involving geos:graphic
features.
272 for hydrants and railway water cranes, especially
subclasses 291+ and 294+, for vertical casings enclosing a
water column and/or a valve.
SEE OR SEARCH CLASS:
166, Wells, appropriate subclasses for wells comprising
casings enclosing valves and/or tubing.
239, Fluid Sprinkling, Spraying, and Diffusing, 201 for
ground installed or embedded spray systems.
404, Road Structure, Process, or Apparatus, 2 for a drain
associated with road structure and subclasses 25+ for a vault
cover-closure associated with pavement structure.
405, Hydraulic and Earth Engineering, 36 for below ground
irrigation systems; subclasses 132+ for tunnels and methods
and apparatus for constructing the same; subclasses 154+ for
pipe and cable laying apparatus and methods; and subclass 272
for earth shoring structures.
Subclass:
364
This subclass is indented under subclass 363. Apparatus in
which the support, casing or protector is an apertured
vertical casing partially or wholly surrounding and providing
access to a valve or meter connected to a buried pipe line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
291-293, for a hydrant having a valve actuator outside its
riser.
294-297, for a hydrant having a casing.
SEE OR SEARCH CLASS:
73, Measuring and Testing, subclass 201 for meter casings or
supports, and subclass 277 for frostproof meter
constructions.
Subclass:
365
This subclass is indented under subclass 364. Apparatus in
which the apertured vertical casing, valve or pipe line has a
means to cause coincidence of the axis of the valve actuator
and the casing, to enable a person applying a removable
actuator to locate the valve connection easily.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 291 for detachable
actuators for valves, and see the search notes thereto.
Subclass:
366
This subclass is indented under subclass 365. Apparatus in
which the vertical well-forming casing or tube rests on a
base plate or section which lies beneath the valve in the
pipe, the pipe being held in place between the base plate and
the upper section of the casing with the valve centered in
the well.
Subclass:
367
This subclass is indented under subclass 365. Apparatus in
which the top of the valve casing has means engaging the
well-forming casing to insure assembly in proper alignment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
277 and 287, for vertical fluid channels of the hydrant type
with telescopic casings.
315.01-329.4, for a fluid handling system with repair,
tapping, or assembly means, other than means to hold the
system together or in alignment when in operative condition.
369 and 370, for telescoping valve and meter wells.
Subclass:
368
This subclass is indented under subclass 364. Valve wells in
which an operating member for the valve extends through the
vertical column and terminates at or near the surface of the
ground.
SEE OR SEARCH THIS CLASS, SUBCLASS:
272 for hydrants, most of which have a vertically extending
actuator.
570 596+ and 625.2+, for drain valves which have vertically
extending actuators, especially pump drains and stop and
waste devices located in inaccessible places.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 291 for valves provided
with detachable actuators and subclass 293 for valves with
extensible actuators.
Subclass:
369
This subclass is indented under subclass 368. Valve wells in
which the vertical column is divided into sections slidable
one within the other, which sections may be locked together
to fix the height of the column.
SEE OR SEARCH THIS CLASS, SUBCLASS:
287 for vertically mounted fluid channels of the hydrant
type having telescopic casings, movement of the conduit
actuating the valve.
370 for telescopic casings comprising valve and meter wells,
no valve actuator being claimed.
Subclass:
370
This subclass is indented under subclass 364. Valve wells in
which the vertical column is divided into movable sections
slidable one within the other, which sections may be locked
together to fix the height of the casing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
277 for a rotatable water crane having a vertically movable
riser.
369 for telescoping casing combined with valve actuator.
SEE OR SEARCH CLASS:
220, Receptacles, subclass 3.92, 3.94, and 4.01+ for
sectional and telescoping containers of general application.
Subclass:
371
This subclass is indented under subclass 364. Devices
comprising closures for the upper ends of the valve or meter
wells.
SEE OR SEARCH THIS CLASS, SUBCLASS:
295 and 296, for hydrant casings flush with ground and/or
covers or caps for hydrants.
800 for closures in fluid handling devices, and see the
search notes thereto.
SEE OR SEARCH CLASS:
220, Receptacles, 200 for receptacle closures of general
application.
Subclass:
372
This subclass is indented under subclass 363. Apparatus in
which the fluent material system is a pipe line.
(1) Note. Pipe systems having means or arrangements to
compensate for thermal expansion are found here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
1 for processes relating to pipe line flow.
236 for distribution systems including pipe lines where
special accommodation to geos:graphical features is
involved.
317 for pipe line repair involving tapping a line under
pressure.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, subclass 105 for pipes in a
trench; subclass 108 for underground conduits for supporting
cables therein; subclass 113 for underground conduits for
supporting pipes therein; and subclasses 124+, 131, 137+, and
140+ for composite pipes and conduits.
Subclass:
373
This subclass is indented under subclass 356. Apparatus in
which the longitudinal dimension of the support, casing or
protector extends upwardly and is reduced in cross-section at
successively higher levels; or in which the support, casing
or protector is designed primarily with a view to elevation
by making its height greater than its diameter or making its
height relatively great by positioning the support on another
structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
376 for tank supports of other types.
SEE OR SEARCH CLASS:
52, Static Structures (e.g., Buildings), subclass 40 for a
specific tower or shaft supporting another device, e.g., a
tank.
222, Dispensing, 173 for dispenser supports.
Subclass:
374
This subclass is indented under subclass 343. Apparatus in
which the support, casing or protector is the whole or a part
of one of the articles of convenience or decoration used to
furnish a house or apartment.
(1) Note. The term furniture refers to the movable articles
such as chairs, tables, beds, desks, cabinets, stoves, used
in a house or apartment as distinguished from the permanent
fixtures such as plumbing, and the term house furnishings
means small articles such as kitchen utensils or lamps.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247.11 especially subclasses 247.33, 247.35, 247.37, and
247.39 for liquid sealed refrigerator drains.
312 for fluid handling systems comprising refrigerator drip
catchers.
342 for fluid handling devices associated with items of
furniture which claim article supporting surfaces other than
a mere top surface, as a shelf.
562 for distribution systems comprising faucet connected,
sink drained devices.
SEE OR SEARCH CLASS:
62, Refrigeration, subclass 261 for a refrigerator combined
with furniture.
Subclass:
375
This subclass is indented under subclass 343. Apparatus in
which the fluent material device is completely or partially
surrounded by a layer of heat exchange or non conducting
material to promote or prevent heat radiation or absorption,
or by a protective cover or layer which may be either outside
the fluid confining member or inside it, being in fact a
liner in the latter case, the layer or cover being more or
less similar in shape or proportions to the enclosed device.
(1) Note. This subclass includes fluent material devices
enclosed in a casing to confine air or a vacuum as a heat
insulating material means for the fluent material device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
264 for plural tanks having outlets which provide for flow
other than from one tank to another, one of which tanks may
be a cooling or insulating jacket for another, but which must
have a claimed outlet or inlet for fluent material.
334 for heat exchange means involving jackets and casings,
especially subclass 336 for flues extending through a casing
for heating the contents and subclass 340 for jacket-type
heat exchangers with means to cause or direct flow in the
fluid heat exchange material.
SEE OR SEARCH CLASS:
150, Purses, Wallets, and Protective Covers, subclass 156
for a flaccid protective cover for a faucet.
220, Receptacles, appropriate subclasses, especially 560.12,
592.01+, and 903 for a container having an insulated wall or
jacket and 495.01+, 23.9, 23.91, and 908.1+ for a container
having a lining or jacket.
222, Dispensing, subclass 131 for dispensers having a
spaced, nondispensing jacket and subclass 183 for other
jacketed dispensers.
229, Envelopes, Wrappers, and Paperboard Boxes, 117.27 and
164.2 for a paperboard box having a lining and 103.11 for a
thermally insulated paperboard box.
Subclass:
376
This subclass is indented under subclass 343. Apparatus in
which the fluent material device includes a tank and the
support, casing, or protector holds the tank in position with
reference to an external area or point of reference.
SEE OR SEARCH THIS CLASS, SUBCLASS:
373 for tapering or tower type supports.
374 for systems which are associated with furniture or other
house furnishings.
453 for barometric type systems.
899 for vehicular supports, and see the search notes to
subclasses 899 and 351 respectively.
SEE OR SEARCH CLASS:
222, Dispensing, 160 for dispensers which are movably
mounted with respect to their supports, and subclasses 173+
for other dispenser supports.
Subclass:
377
This subclass is indented under subclass 343. Devices in
which the fluent material handling device or a part thereof
is totally or partially surrounded by a casing (1) to prevent
damage to an object external to the device, (2) to seal the
device against leakage to or from the device outside the
normal fluid path, (3) to protect the device or parts thereof
or the contents against damage or contamination by contact
with external objects, dirt or germs, or (4) to prevent
unauthorized use.
(1) Note. The guard or protector must be external to the
system, so that it does not serve to confine or control the
material in the system nor to close the flow openings of the
system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
294 for hydrant casings, especially subclass 296 for a cap,
cover or hood used as a guard on a hydrant.
317 for antisplash shields used to prevent escape of fluid
when a pressure system is tapped.
375 for casings which are close fittings or of a shape
generally corresponding to that of the device, and
substantially complete, and see the search notes thereto.
383 for locks or seals to prevent unauthorized use.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 182 for covers for the operating
parts of dispensers; subclass 192 for bumpers and guards for
dispensers.
251, Valves and Valve Actuation, 89 for valves provided with
actuator disabling means to prevent unintentional operation.
Subclass:
378
This subclass is indented under subclass 377. Guards or
shields in which a spigot or faucet of a fluent material
device is provided with a shock absorbing fixture or
attachment which will be struck by a container when moved
into position for filling from the spigot or faucet.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, subclass 149 for receiver lift means with
additional cushioning means, subclass 289 for laterally
shiftable vent tubes, and subclasses 351+ for receiver
actuated discharge means.
251, Valves and Valve Actuation, subclass 156 for receptacle
operated nonstop valves.
Subclass:
379
This subclass is indented under subclass 377. Guards or
shields in which a nozzle of a fluent material device is
provided with an attachment or fixture to prevent scratching
of the surface of a container into which the nozzle is
inserted.
SEE OR SEARCH THIS CLASS, SUBCLASS:
801 for nozzles and spouts in fluid handling systems, and
see the search notes thereto.
SEE OR SEARCH CLASS:
222, Dispensers, subclass 566 for nozzles, spouts and
pouring devices for dispensers.
Subclass:
380
This subclass is indented under subclass 377. Guards or
shields in which a closure member seals the opening between
the spigot and refrigerator casing of a beer cooler.
SEE OR SEARCH THIS CLASS, SUBCLASS:
317 for shields for sealing the opening between a beer keg
and spigot of the tapping type.
359 for escutcheon type supports for pipes passing through
the walls of buildings.
SEE OR SEARCH CLASS:
292, Closure Fasteners, subclass 357 for escutcheons for
closure fastener elements.
Subclass:
381
This subclass is indented under subclass 377. Guards and
shields which comprise (1) a cylindrical or conical member
attached to the spout of the fluent material device to
prevent contamination of the spout either during or after the
flow of fluent material; or (2) a movable shield that covers
the outlet area or spout when not in use.
(1) Note. Where the movable guard covers only the outlet
end of the spout and actually closes it against flow, it is
considered to be a valve or closure and classification is on
that basis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
800 for closures in fluid handling systems, and see the
search notes thereto.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 182 for guards or covers for
operating parts of a dispenser.
251, Valves and Valve Actuation, subclass 155 for
arrangements wherein a valve or closure covers a spout.
Subclass:
382
This subclass is indented under subclass 377. Guards and
shields in which the valve member of a fluent material device
(1) is enclosed in a casing which is locked against
unauthorized use of the valve; or (2) has an internal key
which is fastened to another object to prevent movement of
the valve to an unauthorized position; or (3) in which the
valve is totally or partially enclosed in a casing or shield
or has casings covering all or part of the operating handle
or stem or a valve to protect the stem or operating handle
against damage or unintentional movement to or from a desired
position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
312 for valves combined with casings which act as drip
catchers.
383 for valves with locks but without casings totally or
partially enclosing the valve.
586 for distribution systems in which there is an interlock
between a valve actuator and a closure for an access
opening.
613 for closures used in series with a valve in distribution
systems.
SEE OR SEARCH CLASS:
222, Dispensing, 173 for dispenser guards in the nature of
casings.
251, Valves and Valve Actuation, 89 for valve actuator
holding means and subclass 297 for detents which are not
enclosing devices.
Subclass:
382.5
This subclass is indented under subclass 382. Devices
wherein there is a particularly shaped aperture in the casing
to accommodate a detachable actuator having a particular
shape and being adapted to engage the valve stem inside the
casing.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 291 for other valves with
detachable actuators.
Subclass:
383
This subclass is indented under the class definition.
Apparatus including a lock means which prevents unauthorized
use or adjustment or a sealing means the breaking of which
indicates unauthorized use or adjustment.
(1) Note. To be classified here the lock means must be a
lock as defined in Class 70 and not merely a latch or
detent.
SEE OR SEARCH THIS CLASS, SUBCLASS:
382 for valve guards and shields, including boxes which are
locked.
SEE OR SEARCH CLASS:
70, Locks, appropriate subclasses for locks, per se.
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, 346 for combined filling devices and
receivers having interlocked discharge means, support or
coupling, and subclasses 348+ for supply means carried
receiver flow control opening means.
222, Dispensing, 153.01 for dispenser locks or fastening
seals.
292, Closure Fasteners, 307, 327 and 328+ for seals of the
closure fastening type.
Subclass:
384
This subclass is indented under subclass 383. Apparatus
which uses a seal as a means for preventing and/or indicating
unauthorized use or adjustment.
SEE OR SEARCH CLASS:
222, Dispensing, 153.05 for dispenser fastening seals.
292, Closure Fasteners, 307 for seals of the closure
fastener type, subclass 327 for seal bolts and subclasses
328+ for shackles for seals.
Subclass:
384.2
This subclass is indented under subclass 383. Devices in
which the structure which is employed to actuate the lock
also actuates the valve.
Subclass:
384.4
This subclass is indented under subclass 384.2. Devices in
which the lock comprises an element which is, or a plurality
of elements which are, manually manipulable in a
predetermined sequence, or to a predetermined position to
effect the operation of the lock.
Subclass:
384.6
This subclass is indented under subclass 384.2. Devices in
which the valve head is biased to or from the open position.
Subclass:
384.8
This subclass is indented under subclass 384.2. Devices in
which the valve head is connected to the lock and actuated
therewith by means comprising two or more fixed and movable
parts so combined that the motion of one compels or
completely controls or constrains motion of the other
according to a law of operation inherent in and depending on
the nature of the combination.
Subclass:
385
This subclass is indented under subclass 383. Apparatus with
a lock means the proximate effect of which is to prevent
rotation of a rotatable element.
Subclass:
386
This subclass is indented under the class definition.
Apparatus which includes an element which senses the level of
a liquid in means to receive an accumulation thereof and in
response thereto exercises a control of the flow of fluid or
acts to maintain that level of the liquid.
(1) Note. Apparatus which maintains the liquid level by
means of overflow pipes or arrangements only is excluded from
this and indented subclasses, since there is not change in
the operation or relative position of any of the parts of the
system which is caused by or related to the maintenance of or
failure to maintain the level.
(2) Note. Valve actuating means operated by diverting a
part of the flow into a metering device have been classified
as valve actuators, even though the metering device is a
level responsive type.
SEE OR SEARCH THIS CLASS, SUBCLASS:
101.25 for a self-proportioning system with liquid level
sensing.
132 for periodic siphons, i.e., those which discharge as
often as a certain level is reached in the supply container
or receiver.
154 for pressure systems containing diverse fluids which
include a control of fluid in response to a liquid level,
especially subclasses 197+ for the hygroscopic type of
discriminating outlet for gas.
213 for diverse fluid containing pressure systems having
level responsive gas vents or whistles.
262 for flow dividing compartments, the outlet from one of
which may be a level maintaining overflow.
561 for apparatus which maintains a desired level in a
container by a continuous over-supply, especially subclasses
563+ for such systems which return the overflow to the supply
and 577+ for tanks with movable or adjustable overflow
including float supported tank outlets in subclass 578. See
(1) Note.
624.14 for repeating cycle valves actuated by line fluid
only.
SEE OR SEARCH CLASS:
62, Refrigeration, subclass 188 and 218+ for refrigeration
means having liquid level control.
222, Dispensing, 52 for automatic dispensers, especially
subclass 62 for those having a float controlled pressure
liquid and subclasses 64+ for material level control.
251, Valves and Valve Actuation, 12 for valves actuated by
flow metering arrangements, and subclasses 15+ for valves
having compulsory cutoff after a flow period. See (2) Note,
above.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
417, Pumps, 36 for control of a pump drive motor in response
to liquid accumulation of pump fluid.
Subclass:
387
This subclass is indented under subclass 386. Apparatus in
which the cycle of operation of a washing machine is
controlled in response to a change in liquid level.
SEE OR SEARCH THIS CLASS, SUBCLASS:
240 for the addition of separate material in an installed
cleaning system.
268 for the addition of nonfluid material to a flow system.
331 for cyclic or program type actuation of valves.
SEE OR SEARCH CLASS:
68, Textiles: Fluid Treating Apparatus, appropriate
subclasses for automatic washing machines, especially 12.01
for single tub machines with automatic sequential operation.
Subclass:
388
This subclass is indented under subclass 386. Apparatus
wherein a liquid level responsive device is provided to
exclude an external liquid from a gas inlet or outlet such as
a shipboard ventilator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
40 for marine governors, i.e., control by position of a
device relative to a body of water.
45 for control by a pendulum or swinging member responsive
to position or inertia of a system.
197 for discriminating outlets for gas in fluid separating
traps or vents for diverse fluid containing pressure
systems.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, 21 for a closure
responsive to or directly actuated by ambient fluid.
114, Ships, subclass 212 for ship ventilating valves.
160, Flexible or Portable Closure, Partition, or Panel,
subclass 5 for weather initiated automatic control of
flexible closures and panels, e.g., screens, awnings, etc.
Subclass:
389
This subclass is indented under subclass 386. Apparatus
wherein the level responding or maintaining flow is increased
or diminished by an external means or in response to a change
in condition other than liquid level, either by a means
acting upon the liquid level responsive control means or by a
second means in series or parallel therewith.
(1) Note. See the class definition, section 3 for collected
search notes on automatic and combined automatic and
nonautomatic controls in this class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
410 for valves which are opened by external means and closed
by float means.
Subclass:
390
This subclass is indented under subclass 389. Apparatus in
which the second control is a manual control.
SEE OR SEARCH THIS CLASS, SUBCLASS:
181 for traps in diverse fluid containing pressure systems
having automatic liquid discharge control with an auxiliary
manual control.
Subclass:
391
This subclass is indented under subclass 386. Apparatus
which includes means responsive to variations of the level of
the accumulated liquid to control both the inflow to and
outflow from an accumulation of liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
214 for high and low level response associated with gas
vents or whistles in diverse fluid containing pressure
systems.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 68 for plural float operated flow
controllers in dispensers.
Subclass:
392
This subclass is indented under subclass 386. Apparatus in
which the liquid level is sensed by sensing an electrical
characteristic of a liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5 for processes of fluid mixing controlled by the
conductivity of the mixture.
93 for self correlating systems controlled by optical or
chemical properties of the ingredients.
Subclass:
393
This subclass is indented under subclass 386. Apparatus
wherein the level to be controlled is in a pressure tank, as
a boiler, and a separate control chamber is provided to
control a liquid inflow or outflow line of the tank. The
control chamber is provided with a connection to the tank at
the desired liquid level so that when the liquid is above
this level the chamber is filled with liquid by the tank
pressure and when the liquid is below the desired level the
liquid in the control chamber is drained to the pressure
tank. The presence or absence of liquid in the control
chamber causes the control of the liquid inflow or outflow
line of the tank.
SEE OR SEARCH THIS CLASS, SUBCLASS:
158 for other liquid level devices of this type which
further control the application of a gas pressure to a feed
trap to discharge the same to a boiler.
Subclass:
395
This subclass is indented under subclass 386. Apparatus
which include means to control the outflow from the
accumulation thereof in response to an element sensing the
level of the accumulated liquid.
(1) Note. A patent to be classified in this or indented
subclass must claim control of the outflow. Level responsive
valve control which may control either an inflow or outflow
and claimed broadly is classified in later subclasses of this
group.
SEE OR SEARCH THIS CLASS, SUBCLASS:
165 for float operated discharge of liquid feed traps to
boilers.
192 for float operated discriminating outlets for liquids in
diverse fluid containing pressure systems.
202 for float operated discriminating outlets for gas in
diverse fluid containing pressure systems.
Subclass:
396
This subclass is indented under subclass 395. Apparatus in
which a means sensing a predetermined, usually high, liquid
level or a full condition of a tank which is accumulating
liquid controls the opening of the tank outlet, allowing the
liquid to discharge, and the closing of the outlet at a low
level or when the tank is empty, the cycle being repeated as
long as liquid is supplied to the tank.
SEE OR SEARCH THIS CLASS, SUBCLASS:
102 for the supply and exhaust type of self-controlling
system, e.g., hydraulic cycle devices and pulsators.
132 for tanks which are periodically discharged by means of
a siphon.
156 for self emptying tanks, usually comprising boiler feed
traps, emptied by gas pressure, especially subclasses 165+
for those controlled by floats.
391 for tanks with liquid level responsive control of both
inflow and outflow.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 12 for fluid actuated or
retarded device receiving liquid diverted from the main line
and controlling a valve in the main line in accordance with
the quantity of diverted liquid accumulated.
Subclass:
397
This subclass is indented under subclass 396. Apparatus in
which the means sensing the liquid level floats in the liquid
and is buoyed up thereby.
SEE OR SEARCH THIS CLASS, SUBCLASS:
398 for float control of the outlet to an accumulation of
liquid in tanks which are not self-emptying.
409 for float control of valves not necessarily outlet
valves, and see the search notes thereto.
Subclass:
398
This subclass is indented under subclass 395. Apparatus
which includes one or more floats responsive to a change in
the level of the accumulated liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
391 for level responsive control of both inflow and outflow
of a tank.
409 for similar devices in which the valve is not
necessarily an outlet valve, and see the search notes to
subclass 409.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, 9 for water closet
tanks and bowls having float control means, especially
subclasses 331 and 353+.
222, Dispensing, 64 for level responsive control of
dispensers.
Subclass:
399
This subclass is indented under subclass 398. Apparatus
wherein the outflow is closed in response to the presence of
a low level in the liquid accumulation.
(1) Note. The float control in patents placed in this
subclass is not intended to regulate liquid level but is
designed to function as a safety control to prevent an
undesired occurrence in the outlet pipe, such as entrance of
air or sediment.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 66 for dispenser type material
level control comprising an empty container cut-off.
Subclass:
400
This subclass is indented under subclass 386. Apparatus
which (1) includes the application of a supplemental force or
bias that will insure the closing of the valve controlled by
the liquid level responsive means, or (2) is combined with
means to insure that the flow is stopped, in case the valve
fails to close properly when urged in closing position by the
liquid level sensing means.
Subclass:
401
This subclass is indented under subclass 400. Apparatus in
which the means sensing the liquid level is an open or bucket
type float which floats to urge the valve closed, and in the
event that the valve controlled thereby does not properly
close the continued rise of liquid level will cause the float
to fill with liquid and sink in the liquid to apply the
supplemental safety closing bias or means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
404 for other open or bucket type floats, and see the search
notes thereto.
Subclass:
402
This subclass is indented under subclass 400. Apparatus
wherein the supplemental closing bias or means responds to or
is actuated by a gravitating tank.
SEE OR SEARCH THIS CLASS, SUBCLASS:
403 for level control by means of the weight of accumulated
liquid, and see especially the search notes to subclass 408.
Subclass:
403
This subclass is indented under subclass 386. Apparatus in
which the liquid level is sensed by means responsive to the
weight or pressure head of the accumulated liquid.
(1) Note. The receptacle which accumulates the pressure
head to be sensed must be specifically related to the
particular sensing means. A general statement that the
sensing means is responsive or is merely connected to some
receptacle, e.g., a tank, is insufficient basis for
classification here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
129 and 134, for weight or fluid operated devices associated
with siphons.
161 162+, 189+, and 204, for weight of fluid operated devices
associated with diverse fluid containing pressure systems.
188 for fluid separating traps with discriminating outlet
for liquid controlled by weight or pressure of the
accumulated liquid.
396 for apparatus controlling the outflow from a
self-emptying tank by weight of accumulated liquid.
402 for gravitating tank as a supplemental or safety closing
means or bias.
455 for line pressure responsive valves not specifically
related to a particular accumulating receptacle.
SEE OR SEARCH CLASS:
177, Weighing Scales, 60 for weigher responsive material
control of general application.
222, Dispensing, 52 especially subclasses 56-58 for similar
arrangements in dispensers.
251, Valves and Valve Actuation, 12 for fluid pressure
actuated valves which are not condition responsive.
417, Pumps, subclass 38 for a liquid pressure sensor for
sensing liquid accumulation to control a pump drive motor.
Subclass:
404
This subclass is indented under subclass 403. Apparatus in
which the liquid level is sensed by an open or bucket type
element which floats on the liquid accumulation when empty
and subsequently is filled with the liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
129 for plural siphons with the main siphon operated by a
sinking or bucket type float.
163 for gas pressure discharge of liquid feed traps with the
gas pressure controlled by sinking or bucket type float.
185 for an inverted bucket or gas collecting float
controlling a discriminating outlet for liquid in a diverse
fluid containing pressure system.
190 for fluid separating traps with discriminating outlets
with fluid responsive valve with sinking or bucket type float
control.
401 for tank outflow control comprising supplemental or
safety closing bias or means and a sinking float.
Subclass:
405
This subclass is indented under subclass 403. Apparatus
including a valve arranged to cut off the fuel supply to an
oil burner or the like in response to a predetermined
accumulation of unburned liquid fuel.
SEE OR SEARCH THIS CLASS, SUBCLASS:
120 for control of branched flow by filling auxiliary tank.
121 for control of branched flow by filling outlet tank or
receiver.
456 for line condition responsive safety cut-offs requiring
resetting.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, 198 for filling devices having feed cut-off
responsive to accumulation in the receptacle being filled.
431, Combustion, subclass 65 for a burner assembly having a
control responsive to collected fuel overflow cutting off
feed to the burner head.
Subclass:
406
This subclass is indented under subclass 403. Apparatus in
which the weight or pressure head of the liquid is sensed in
a vessel which is separate from the liquid accumulation but
is in communication therewith.
(1) Note. Both auxiliary gravitating tanks and stationary
devices for measuring a static head are included.
SEE OR SEARCH THIS CLASS, SUBCLASS:
120 for alternate or successively substituted flows from a
source with control by filling an auxiliary gravitating
tank.
134 for an auxiliary receptacle accumulator for starting a
siphon.
154 for diverse fluid containing pressure system traps,
which are in effect communicating measuring vessels, though
not necessarily concerned with level.
393 for level responsive devices including a liquid weight
or pressure sensing chamber connected to a tank at the
desired liquid level.
Subclass:
407
This subclass is indented under subclass 406. Apparatus in
which the separate measuring vessel is provided with
connections with the liquid accumulation at both the top and
bottom of the measuring vessel.
SEE OR SEARCH THIS CLASS, SUBCLASS:
563 for distribution systems of the closed circulation
type.
Subclass:
408
This subclass is indented under subclass 403. Apparatus in
which a single gravitating tank, with or without its mounting
means, constitutes both the liquid accumulating means and the
liquid level sensing means.
(1) Note. This subclass also takes the subcombination in
which the valve or flow controlling means operated by the
gravitating tank is not claimed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
120 for control of branched flow by filling of an auxiliary
gravity tank.
161 and 162+, for gas pressure discharge of liquid
feed-traps with gas pressure controlled by amount of liquid
in trap by gravitating vessel, and 189 for valves in diverse
fluid containing pressure systems controlled by gravitating
vessels.
189 for fluid separating traps with discriminating outlet
for liquid controlled by gravitating vessel.
402 for gravitating tank controlled tank outflow when
supplemental or safety closing bias or means is involved.
404 for sinking or bucket float type gravitating tanks, and
see the search notes thereto.
406 for level response control means comprising an auxiliary
gravitating tank.
SEE OR SEARCH CLASS:
177, Weighing Scales, 60 for a gravitating tank in an
automatic weigher.
222, Dispensing, 52 especially subclasses 56-58 for
dispensing controlled by quantity or weight.
417, Pumps, subclass 37, for a movable liquid receptacle for
sensing liquid accumulation to control a pump drive motor.
Subclass:
409
This subclass is indented under subclass 386. Apparatus
wherein the element which senses the liquid level floats on
the liquid and is buoyed up thereby.
SEE OR SEARCH THIS CLASS, SUBCLASS:
41 for float controlled marine governors.
131 for siphon discharge receiver with float control for
siphon.
135 for float operated inlets to siphons.
137 for float operated vents in periodic siphons.
165 192+ and 202, for float controlled traps and valves in
diverse fluid containing pressure systems.
247.21 for a ball-type float in combination with a liquid
seal means.
397 for float control in self emptying tanks.
398 for control of the outflow from the liquid accumulation
in response to a float.
404 for bucket type floats, and see the search notes
thereto.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, appropriate
subclasses for float operated devices of that class.
73, Measuring and Testing, subclass 322.5 for floats, per
se.
166, Wells, subclass 54 for automatically operated well
apparatus comprising float controlled valves.
222, Dispensing, subclass 62, 66 and 67+ for float controlled
dispensers.
417, Pumps, 40 for a float which senses liquid accumulation
to control a drive motor.
Subclass:
410
This subclass is indented under subclass 409. Apparatus
wherein the flow controlling valve is opened by external
means and its closing is in response to or is controlled by a
float.
SEE OR SEARCH THIS CLASS, SUBCLASS:
389 for float controlled valves having external means either
assisting or substituted for the float operation.
456 for condition change responsive valves which must be
reset by external means.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, 381 for tank outlet
valves which are latched open and released by a float.
251, Valves and Valve Actuation, 15 for apparatus for flush
type valves which are opened by external means, the closing
being delayed or controlled by fluid pressure operated
member, and subclasses 66+ for biased trip valves which are
not released or reset by condition responsive means.
Subclass:
411
This subclass is indented under subclass 409. Apparatus in
which a single float controls a plurality flow controlling
means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
168 for float responsive unitary inlet and outlet valves in
gas pressure discharge of liquid feed traps to boilers.
391 for the control of both the inflow and outflow from the
liquid accumulation.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 67 for plural float operated flow
controllers in dispensers.
Subclass:
412
This subclass is indented under subclass 409. Apparatus in
which the float controls the application of another source of
power for operating the flow controlling means rather than
acting directly through a mechanical connection.
SEE OR SEARCH THIS CLASS, SUBCLASS:
191 and 195, for servo control with sinking type floats in
pressure systems containing diverse fluids.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, appropriate subclasses
for fluid servo-motors.
251, Valves and Valve Actuation, 25 for fluid pressure
servo-motor operation of valves (and see the search notes to
subclass 25), subclasses 68+ for electrical actuation of
biased trip type valves, and subclasses 129+ for electrical
actuation of valves, especially subclass 131 for remote
control of such actuators.
Subclass:
413
This subclass is indented under subclass 412. Apparatus in
which the float controls the application of fluid pressure
for operating the flow control means.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, appropriate subclasses
for fluid servo-motors.
251, Valves and Valve Actuation, 25 for fluid pressure servo
valve actuation which are operated by external means or in
which the operating means is not specifically claimed, and
see the search notes to subclass 25.
Subclass:
414
This subclass is indented under subclass 413. Apparatus in
which the flow control means is a valve comprising a flexible
diaphragm.
SEE OR SEARCH THIS CLASS, SUBCLASS:
777 for expansible chamber devices, especially subclasses
784+ for the flexible wall type, and subclasses 793+ for
diaphragms, per se.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 25 for fluid servo-motor
actuation of valves, and especially subclasses 45 and 46 for
those involving diaphragm valves and/or motors.
Subclass:
415
This subclass is indented under subclass 413. Apparatus in
which the source of fluid pressure is the tank holding the
liquid accumulation to the level of which the float
responds.
(1) Note. Many of the patents in this subclass utilize the
steam pressure in a boiler for operating a valve controlling
the flow of water into the boiler.
SEE OR SEARCH THIS CLASS, SUBCLASS:
156 for gas pressure discharge of liquid feed traps to a
boiler.
192 and 202, for float controlled discriminating outlets for
liquid and gas in diverse fluid containing pressure systems.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 33 for valves actuated by
fluid servo-motors deriving working fluid from the line
controlled by the valve.
Subclass:
416
This subclass is indented under subclass 409. Apparatus in
which the float and/or the flow control means is operated
during a shorter length of time than would be the case if the
float and valve were free to respond continuously to the
change in liquid level.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 75 for valve
actuation of the snap action type, and see the search notes
thereto, subclass 76 for valve actuators of the impact type,
and see the search notes thereto, and subclasses 77+ for
valve actuation involving lost motion, and see the search
notes thereto.
Subclass:
417
This subclass is indented under subclass 416. Apparatus in
which the float operating the flow controlling means is
restrained from freely responding to the changing liquid
level and is released from restraint by a second or auxiliary
float.
SEE OR SEARCH THIS CLASS, SUBCLASS:
420 for other trip mechanisms for float controlled valves.
Subclass:
418
This subclass is indented under subclass 416. Apparatus in
which the quick action of the flow controlling means is
obtained by use of a mechanism which has a faster or
accelerated rate of motion after it passes a center position
than its rate of motion before attaining the center
position.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 75 for snap acting
valves not of level or condition responsive types, and see
the search notes thereto.
Subclass:
419
This subclass is indented under subclass 418. Apparatus
wherein the change in rate of motion is obtained by the use
of a shifting weight.
SEE OR SEARCH THIS CLASS, SUBCLASS:
424 for float controlled valves with counterbalance means.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 338 for weight
biased valves, and see the search notes thereto.
Subclass:
420
This subclass is indented under subclass 416. Apparatus in
which the flow control means is provided with a biasing means
urging it in one direction which means is restrained by a
latch or similar element, which latch is released by means of
the float.
SEE OR SEARCH THIS CLASS, SUBCLASS:
463 for safety cut-offs responsive to a line condition and
employing fluid released trips.
467 for fluid released latches responsive to a line
condition to allow the valve to open.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 66 for biased trips
controlling valves and operated at will, and see the search
notes to subclass 66.
Subclass:
421
This subclass is indented under subclass 420. Apparatus
which includes a weight or spring as the biasing means.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 66 for biased trip actuated
valves, especially subclass 72 for weight biased trips, and
see the search notes to subclass 66.
Subclass:
422
This subclass is indented under subclass 416. Apparatus in
which during a part of its travel the float moves without
producing a corresponding movement of the flow control
means.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 77 for valve actuators
including a lost motion mechanism, and see the search notes
to subclass 77.
Subclass:
423
This subclass is indented under subclass 409. Apparatus
which includes a plurality of floats.
SEE OR SEARCH THIS CLASS, SUBCLASS:
391 for apparatus including plural floats which control the
inlet to and outlet from a tank.
411 for a single float controlling plural valves.
417 for apparatus including a pilot or auxiliary float for
releasing a float controlling the flow control means to
provide a quick acting mechanism.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 68 for plural float actuated
valves in dispensers.
Subclass:
424
This subclass is indented under subclass 409. Apparatus in
which the float is provided with means to apply a force which
at least partially counterbalances the weight of the float
and valve assembly or which partially counterbalances the
buoyancy of the float.
SEE OR SEARCH THIS CLASS, SUBCLASS:
419 for quick acting float valves having an over center
mechanism with a shifting weight.
Subclass:
425
This subclass is indented under subclass 424. Apparatus in
which the counterbalancing means is within the tank holding
the liquid accumulation.
Subclass:
426
This subclass is indented under subclass 409. Apparatus in
which the valve operating mechanism can be preset to respond
at any one of a plurality of levels, by making appropriate
changes in the connections between the valve and the float or
any intermediate linkage or mechanism.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 234 for adjustable
lever type actuators for valves, and see the search notes
thereto.
Subclass:
427
This subclass is indented under subclass 409. Apparatus in
which means is provided for removing from the interior of a
float material which may leak into it.
SEE OR SEARCH THIS CLASS, SUBCLASS:
312 for means for collecting material which escapes from the
desired flow path and either returning it to the system or
disposing of it, and see the search notes to subclass 312.
Subclass:
428
This subclass is indented under subclass 409. Apparatus
where the float is in a chamber separate from the holder for
the liquid accumulation, but which chamber is connected
therewith so that the variation in liquid level in the
chamber corresponds to that in the holder.
SEE OR SEARCH THIS CLASS, SUBCLASS:
406 for communicating measuring vessels responding to weight
or head of accumulated fluid.
571 for plural tanks connected for serial flow, and see the
search notes to subclass 571.
Subclass:
429
This subclass is indented under subclass 409. Apparatus in
which the float is guided or so constructed and mounted that
its path of movement will necessarily be along a straight
line.
Subclass:
430
This subclass is indented under subclass 429. Apparatus in
which the path of travel of the float is co-axial with the
valve or part controlled in response to the float.
Subclass:
431
This subclass is indented under subclass 430. Apparatus in
which the float acts as spreading, distributing or antisplash
means for the liquid flow controlled thereby.
SEE OR SEARCH THIS CLASS, SUBCLASS:
436 for flow guides or restrictors for float arm operated
valves.
582 for distribution systems having anti splash means not in
the flow passage.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 118 for valves combined
with material guides or restrictors in the flow passage which
may function to reduce turbulence or splashing.
Subclass:
432
This subclass is indented under subclass 430. Apparatus in
which the float surrounds the inlet pipe for the fluid the
flow of which is controlled by the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
431 for similar arrangements in which the float comprises a
spreader or anti-splash means.
Subclass:
433
This subclass is indented under subclass 430. Apparatus in
which the float and valve controlled thereby are rigidly
connected together.
Subclass:
434
This subclass is indented under subclass 409. Apparatus in
which the float responding to variations in liquid level is
connected to the flow control means by means of a rod or arm
which is pivoted at an end thereof and the arm turns about
the pivot during operation.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, appropriate
subclasses for water closet tanks and bowls with float
controlled valves.
222, Dispensing, 64 for dispensers with float arm operated
valves.
251, Valves and Valve Actuation, 213 for mechanical movement
valve actuators, especially subclasses 231+ for lever type
mechanical movements.
Subclass:
435
This subclass is indented under subclass 434. Apparatus
which includes in addition to the float mechanism, means to
retard or cushion the rate of closing or opening of the flow
controlling valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
470 for line pressure responsive valves which have a reactor
component tending to close them as soon as they open.
624.11 for a time controlled valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 12 for fluid retarded
valves, subclass 64 for valves with nonfluid retarders, and
subclasses 118+ for valves with material guides or
restrictors which retard the operation of a valve to which
they are connected.
Subclass:
436
This subclass is indented under subclass 434. Apparatus
including means to restrict or act as a guide for the flow of
liquid to or from the valve controlled by the float.
(1) Note. Many of these restrictors have the effect of
silencing the fluid flow.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 117 and 118+ for
other valves combined with flow guides or restrictors, and
see the search notes to subclass 118.
Subclass:
437
This subclass is indented under subclass 436. Apparatus in
which the restrictor or flow guide is an external hood or
deflector or annular outlet surrounding the inlet pipe.
SEE OR SEARCH THIS CLASS, SUBCLASS:
431 and 432, for floats surrounding the flow pipe and acting
as spreaders or deflectors.
Subclass:
438
This subclass is indented under subclass 434. Apparatus
wherein the float means moves the nozzle or inlet terminal
for controlling the flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
578 for float supported movable outlet elements.
592 for internally extending inlet pipes in distribution
systems, and see the search notes thereto.
615 for articulated or swinging flow conduits in
distribution systems, and see the search notes to subclass
615.
Subclass:
439
This subclass is indented under subclass 434. Apparatus in
which the valve controlled by the float is removable from
outside the container holding the liquid accumulation.
(1) Note. In the arrangements classifiable in this subclass
the valve is usually removable for replacement or repair
purposes, the float means and linkage remaining in the tank.
SEE OR SEARCH THIS CLASS, SUBCLASS:
326 for a fluid handling system with repair, tapping, or
assembly means to extract a foot valve from top of an
enclosure.
Subclass:
440
This subclass is indented under subclass 434. Apparatus in
which the inlet pipe is reversed upon itself in substantially
a "U" shape and is provided with the float operated valve on
the terminal thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
123 for siphons.
215 for back flow prevention in flow lines of inverted U
shape which are not primarily intended to operate as
siphons.
442 for other inlet terminal float arm operated valves.
591 for tanks having internally extending flow pipes of
inverted U shape.
Subclass:
441
This subclass is indented under subclass 434. Apparatus
which includes a pipe carrying a part of the flow through the
float arm controlled valve out of the tank holding the liquid
accumulation the level of which controls the float.
(1) Note. Many of the patents in this subclass are for
refilling a toilet trap.
SEE OR SEARCH THIS CLASS, SUBCLASS:
561 for distribution systems involving branch flow,
especially subclasses 608+ for those having a single inlet
and plural outlets.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, 300 for water
closets of the tank type.
Subclass:
442
This subclass is indented under subclass 434. Apparatus in
which the float arm, the valve operated thereby and the
connections therebetween comprise an assembly which is
mounted on the inlet pipe and in which the valve element
reciprocates co-axially with respect to the inlet pipe.
SEE OR SEARCH THIS CLASS, SUBCLASS:
440 for U-shaped inlet pipes having terminal valves of this
type.
592 for distribution systems having internally extending
inlet pipes, and see the search notes thereto.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 147 for valve
mountings of the terminal type, and subclasses 318+ for
reciprocating valves of this class, and see the search notes
thereto.
Subclass:
443
This subclass is indented under subclass 442. Apparatus in
which the inlet pipe is horizontal or enters the tank holding
the liquid accumulation laterally.
Subclass:
444
This subclass is indented under subclass 442. Apparatus in
which the inlet pipe is vertical and enters the tank holding
the liquid accumulation from the bottom thereof.
Subclass:
445
This subclass is indented under subclass 434. Apparatus in
which there is a second lever or toggle connecting the float
arm with the valve controlled thereby.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 75 for valve
actuators of the toggle or snap acting type, and subclasses
279+ for valve actuators comprising linkage.
Subclass:
446
This subclass is indented under subclass 434. Apparatus in
which the connection between the float arm and the valve
controlled thereby comprises a cam or gear or a screw thread
type mechanical motion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
447 for a rotary valve element screw threaded to the float
arm, no motion of the valve relative to the valve casing
resulting from the screw arrangement.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 213 for mechanical movement
valve actuators.
Subclass:
447
This subclass is indented under subclass 434. Apparatus
including a valve which rotates on its axis to control the
valve part or parts and is connected to the float arm for
operation thereby.
SEE OR SEARCH THIS CLASS, SUBCLASS:
446 for valves which rotate only as a means to secure
longitudinal valving motion of the valve as by a screw type
mechanical movement.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 304 for rotary valves, per
se.
Subclass:
448
This subclass is indented under subclass 434. Apparatus in
which the valve controlled by the float arm is pivoted to
swing about an axis for controlling the fluid flow.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 84 for valve heads
which are movably connected to their stem or actuator for
accommodation to their seats, and subclasses 298+ for pivoted
valves.
Subclass:
449
This subclass is indented under subclass 434. Apparatus in
which the valve controlled by the float arm is spherical in
shape.
SEE OR SEARCH THIS CLASS, SUBCLASS:
539 for spring biased ball valves which yield to direct
pressure, e.g., check or safety valves.
Subclass:
450
This subclass is indented under subclass 434. Apparatus in
which the valve controlled by the float arm is designed in
such a manner that fluid pressure is exerted on opposing
surfaces of the valve so that the forces acting on the valve
as a result of flow or pressure in the line are neutralized
or balanced, and thus a smaller force is necessary to actuate
the valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 281 for balanced
valves with or without actuators therefor, and see the search
notes thereto.
Subclass:
451
This subclass is indented under subclass 434. Apparatus in
which the valve controlled by the float arm is made of or
includes material which flexes during the closing action.
SEE OR SEARCH THIS CLASS, SUBCLASS:
525 for resilient material valves of the line condition
responsive type.
793 for diaphragms, per se, some of which constitute valve
elements, and see the search notes to subclass 793.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 490 for dispenser outlets
comprising slitted resilient diaphragms or nipples, and see
the search notes thereto.
251, Valves and Valve Actuation, 4 for valves comprising
flexible tubes and collapsing means therefor.
Subclass:
453
This subclass is indented under subclass 386. Apparatus in
which atmospheric pressure is utilized for maintaining a
liquid level by balancing such pressure against a hydrostatic
head.
SEE OR SEARCH THIS CLASS, SUBCLASS:
81 for apparatus intended to exercise a control of fluid
flow in response to variations in atmospheric pressure.
261 for replenishment of liquid in a plurality of battery or
electrolytic cells by barometric supply.
571 for plural tanks or compartments connected for serial
flow, and see the search notes to subclass 571.
SEE OR SEARCH CLASS:
62, Refrigeration, subclass 397 for a withdrawable liquid
cooler with a barometric feed type container.
222, Dispensing, subclass 437 and 457 for dispensers
comprising a barometric trap chamber, and see the search
notes to subclass 457.
Subclass:
454
This subclass is indented under subclass 453. Apparatus
which includes means for closing the fluid connection between
a supply container and a receiving vessel.
(1) Note. Many of the devices classified in this subclass
are provided with cut-offs which close where the connection
between the supply and receiver is disassembled.
SEE OR SEARCH THIS CLASS, SUBCLASS:
320 for attached flow devices for tapping a source under
pressure where the attachment comprises or carries means for
opening a valve in the source container, which valve has no
other actuator.
614.02 614.05, for separable, valved, flow path sections
wherein at least one of the valves is operated by the act of
joining or disconnecting the sections.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, subclass 335, 336, 348+, and 351+ for a
valved joint between a supply and a receiver, the valve being
operated by the act of connecting or disconnecting them.
222, Dispensing, subclass 165 for dispensers which have the
supply container removable for refilling, and subclasses 437
and 457 for barometric type trap chamber dispensers and see
the search notes to subclass 457.
251, Valves and Valve Actuation, subclass 89.5 and 149+ for
valved pipe joints wherein the valve is operated by the
coupling act.
Subclass:
454.2
This subclass is indented under the class definition.
Devices comprising one or more valve heads and their
cooperating seats, with or without actuating means, formed in
a sleeve, bonnet or similar structural unit which is
removable as such from a valve body or housing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
223 particularly subclass 234.5 for inflatable article
valves having a removable core unit provided with a head and
seat.
283 for removable units in hydrant valves.
315.13 for a fluid handling system with assembling,
disassembling, mounting, or removing a domestic faucet having
a unitized valve head and seat.
493.1 512.2 and 614.19, for one valve head and seat carried
by, and therefore removable with, another valve head.
515 for removable head and seat units in valve couplings or
unions.
525.1 for combined lip-like heads and seats.
Subclass:
454.4
This subclass is indented under subclass 454.2. Devices
which are designed to be used as inlet or outlet valves, or
both, of fluid compressors or pumps.
SEE OR SEARCH CLASS:
417, Pumps, subclass 454 for an expansible chamber type pump
having means for facilitating assembly or disassembly of a
pump valve to or from the pump.
Subclass:
454.5
This subclass is indented under subclass 454.2. Devices in
which the seat carrying portion is threadably secured in the
valve casing.
Subclass:
454.6
This subclass is indented under subclass 454.2. Devices in
which the unit is retained in position by a valve bonnet or
access-opening closure.
Subclass:
455
This subclass is indented under the class definition.
Apparatus in which a valve is controlled in response to a
change in the fluid condition, occurring within the system or
line including the valve, which change has not been effected
by external means for the express purpose of controlling the
operation of the valve.
(1) Note. The ultimate function of these devices is to
control the flow by its own characteristics. Where the
ultimate purpose of the system goes beyond this field,
classification is in the subclass appropriate to the system,
even though one or more line condition change responsive
valves are included in it. For example, a closed circulating
distribution system is classified in subclasses 563+ even if
it has check valves in one of more flow passages.
SEE OR SEARCH THIS CLASS, SUBCLASS:
38 for gravity or inertia operated flow controllers.
47 for speed responsive valve control, and see the search
notes to subclass 47.
59 for freeze condition responsive valves.
67 for fusible, frangible or soluble flow controllers.
78 for atmospheric condition change responsive valves.
154 for condition change responsive valves in diverse fluid
containing pressure systems.
220 for condition responsive valves of the large streamlined
co-axial needle type used in hydraulic engineering, i.e.,
Larner-Johnson.
386 for liquid level responsive or maintaining systems.
SEE OR SEARCH CLASS:
181, Acoustics, subclass 212 and 237 for general fluid
conducting and pressure relief valves.
222, Dispensing, 491 for dispenser outlet valves operated by
pressure of the material, and see the search notes thereto.
251, Valves and Valve Actuation, 15 for flush type valves
the closing of which is delayed by means of a pressure
chamber in the line, and subclasses 25+ for fluid pressure
pilot or servo operation of a valve.
Subclass:
456
This subclass is indented under subclass 455. Apparatus in
which a valve closes in response to a change in internal
condition of the line fluid but does not open when the line
condition returns to its previous state, the necessary
reopening or resetting operation being performed by an
external operator, usually manually.
SEE OR SEARCH THIS CLASS, SUBCLASS:
50 and 57, for excess speed responsive cut-offs.
65 for fuel safety cut-offs responsive to combustion failure
in a burner.
405 for oil burner fuel overflow preventing safety
cut-offs.
467 for line condition change opened valves which require
resetting.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, 198 for cut-off valves operated by means
responsive to level in a receptacle being filled, said means
not including mere increase in line pressure.
251, Valves and Valve Actuation, 15 for valves which are
opened by manual or mechanical means and closed by line fluid
reaction after a predetermined flow period.
Subclass:
457
This subclass is indented under subclass 456. Apparatus in
which the valve is closed in response to a change in
temperature in the line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
59 for freeze condition responsive valves.
65 for fuel safety cut-offs responsive to combustion failure
in a burner.
72 for flow control devices which includes a heat fusible or
destructible element for sensing the thermal condition.
79 for valves controlled in response to variations in
atmospheric temperature.
468 for valves operated in response to changes in thermal
condition in the line but not requiring reset, and see the
search notes thereto.
SEE OR SEARCH CLASS:
236, Automatic Temperature and Humidity Regulation,
appropriate subclasses, especially subclass 21 for safety
cut-outs and subclass 89 for motor safety cut-outs in
automatic temperature regulation.
Subclass:
458
This subclass is indented under subclass 456. Apparatus in
which the valve member is provided with a means to close the
valve in response to a predetermined low pressure or velocity
of line fluid at a point in the line, and also with means to
close the valve in response to a predetermined high internal
pressure or velocity occurring in the line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
180 for diverse fluid containing pressure systems in which a
liquid drain is provided responsive to abnormal pressures.
493 for bi-directional flow responsive valves.
Subclass:
459
This subclass is indented under subclass 456. Apparatus
which includes a mechanism which senses and is responsive to
variations in the velocity of the fluid flowing through the
line.
(1) Note. This subclass includes apparatus in which the
sensing means is inherently responsive to fluid velocity
regardless of how the sensing means is described or claimed
by the inventor.
(2) Note. If a device is described as flow responsive but
is equally responsive to static pressure, it is classified on
the latter basis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
483 for suction flow governors with reactors sensing changes
in flow or pressure differential in the line.
486 for pilot or servo controlled valves which sense changes
in flow or pressure differential in the line.
497 for valves having a separate fluid reactor surface which
responds to changes in flow or pressure differential in the
line.
Subclass:
460
This subclass is indented under subclass 459. Apparatus in
which the valve closes in response to an increased velocity
beyond a predetermined value.
(1) Note. Many of the patents classified in this subclass
close in response to excess velocity occasioned by a break in
the line beyond the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
57 for excess speed responsive valve control, and see the
search notes thereto.
498 for valves having separate reactor surfaces and closing
in response to excess velocity but not requiring reset.
Subclass:
461
This subclass is indented under subclass 456. Apparatus in
which the valve is closed in response to an increase in
pressure beyond a maximum.
SEE OR SEARCH THIS CLASS, SUBCLASS:
505 for line condition responsive valves which have separate
connected reactor surfaces and are biased open.
517 for line condition responsive valves of the direct
acting type which are biased open.
Subclass:
462
This subclass is indented under subclass 456. Apparatus in
which the valve is reopened or reset by use of by-passes
and/or valves which equalize the pressure on both sides of
the main or cut-off valve, thereby permitting or causing the
cut-off valve to open by fluid pressure alone.
SEE OR SEARCH THIS CLASS, SUBCLASS:
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
629 for plural valve organizations of the pressure
equalization type.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 281 for balanced valves of
general utility, and see the search notes thereto.
Subclass:
463
This subclass is indented under subclass 456. Apparatus in
which the valve is biased toward the closed or cut-off
condition but is restrained from closing by a latch or
similar means, which latch will release the valve for closing
in response to a change in fluid condition within the
apparatus.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 73 for fluid
pressure trip actuation wherein the source of fluid for
actuating the trip is not necessarily the line which is
controlled, and see the search notes thereto.
Subclass:
464
This subclass is indented under subclass 456. Apparatus in
which the valve is urged or biased, as by gravity or a spring
means, toward a closed or cut-off position and this bias is
opposed by the fluid pressure within the apparatus, a
lowering in the fluid pressure permitting the valve to seat
or close, the arrangement being such that the valve does not
return to open position on subsequent increase of fluid
pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
511 especially subclasses 522 to 543 for direct response
valves opened by line flow and biased to closed position,
where the valve shifts freely to and from closed position on
change of fluid pressure condition.
Subclass:
465
This subclass is indented under subclass 464. Apparatus
including a mechanical means which prevents the valve from
reopening after seating or closing in the event the fluid
pressure is reestablished.
(1) Note. In the valves classified herein the resetting
operation must include the removal of the mechanical means
from the stop position.
(2) Note. Magnetic detent is included herein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
522 for direct response valves with external means for
opposing the bias.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 89 for means for blocking
or disabling an actuator for a valve which is not condition
responsive.
Subclass:
466
This subclass is indented under subclass 464. Apparatus in
which the incoming pressure urges the cut-off valve toward
its seat or holds it closed after the valve has closed in
response to the decrease in pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
462 for this type of safety cut-off valves including
pressure equalization valves or by-passes or venting valves
for resetting the valve.
Subclass:
467
This subclass is indented under subclass 455. Apparatus in
which a valve opens in response to a change in internal fluid
condition and will not return to its closed operative
position on removal of the change in condition until a
closing or resetting of the valve and/or a trip device is
performed by an external operator, usually manually.
SEE OR SEARCH THIS CLASS, SUBCLASS:
62 for valve in which the valve is opened in response to a
freeze condition and remains open until reset.
456 for valves which close in response to condition change
and require resetting, and see the search notes to subclass
456.
Subclass:
467.5
This subclass is indented under subclass 455. Apparatus
which responds to a change in consistency of the fluent
material in the line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
2 for processes of this type.
92 for similar sensing means in mixture control.
109 particularly subclasses 115.01+ and 118.01+, for line
consistency responsive control in a system which includes a
constant level overflow.
Subclass:
468
This subclass is indented under subclass 455. Apparatus
within ... in which a valve is controlled in response to a
change in the thermal condition of the fluid within the
apparatus.
(1) Note. This subclass includes devices which sense changes
in thermal conditions of the fluid and exercise a
compensating effect so as to neutralize any effect the change
in thermal condition of the fluid would otherwise have on the
operation of the device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
6 for processes of mixing controlled by heat of combustion
of the mixture.
59 for freeze condition responsive controls.
65 for fuel safety cut-offs responsive to combustion
failure.
72 for similar apparatus which includes a heat fusible or
destructible element for sensing the thermal condition.
79 for valves controlled in response to variations in
atmospheric temperature.
90 118 and other appropriate subclasses of this group for
self-proportioning systems having temperature responsive or
maintaining aspects.
334 for systems involving heating, heat exchange and
cooling, and see the search notes to subclass 334.
457 for safety cut-off valves which respond to temperature
changes in the line and require external reset.
SEE OR SEARCH CLASS:
236, Automatic Temperature and Humidity Regulation,
appropriate subclasses for thermally controlled valves, per
se, especially subclasses 53-60 for temperature responsive
liquid separating traps.
Subclass:
469
This subclass is indented under subclass 455. Valves which
are biased closed and are forced open by fluid pressure, the
fluid flowing through the valve after the initial opening
movement thereof acting on an auxiliary reactor surface to
affect the valve opening and/or closing motion.
(1) Note. The auxiliary reactor surface may be either (a) a
surface configuration of the valve sensitive to fluid flow,
(b) a distinct surface affected by fluid which has passed
through the valve or (c) a distinct surface located upstream
of the relieved fluid flow and affected by the pressure
condition created by the flow.
(2) Note. Pop relief valves are classified in this and
indented subclasses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
494 for condition responsive valves in which the initial
opening movement of the valve is caused or assisted by
pressure on a separate but connected reactor surface.
511 for condition responsive valves of the check valve type,
i.e., directly responsive.
Subclass:
470
This subclass is indented under subclass 469. Valves in
which the auxiliary reactor surface aids in valve closing.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 15 for valves opened by
external means with compulsory cut-off after a flow period by
the effect of the flowing liquid on an auxiliary surface, and
subclasses 48+ for valve actuators with dashpot or fluid
controlled retarders or timers.
Subclass:
471
This subclass is indented under subclass 469. Valves in
which the reactor is in the inlet to the valve seat.
Subclass:
472
This subclass is indented under subclass 469. Valves in
which the fluid is released in a plurality of paths, the
reactor surfaces being located in one or more of the
branches.
Subclass:
473
This subclass is indented under subclass 472. Valves in
which the flow in each path is initiated or controlled by a
separate valve or valve area, at least one of which is of the
pop reactor and/or huddling chamber type.
Subclass:
474
This subclass is indented under subclass 469. Valves in
which the reactor moves relative to the valve parts and is
capable of motion in some part of its range without causing
movement of the valve.
(1) Note. The movable reactor usually imparts a "hammer
blow" to free the valve parts.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 76 for impact type
valve actuators of general application, and see the search
notes thereto, and subclasses 77+ for valves with lost motion
between actuator and valve, and see the search notes to
subclass 77.
Subclass:
475
This subclass is indented under subclass 469. Valves in
which the flow path giving access to the auxiliary reactor is
controlled by an adjustable choke.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 118 for flow restrictors or
chokes in combination with valves of general application,
especially subclass 121 for the adjustable type; and see the
search notes to subclass 119.
Subclass:
476
This subclass is indented under subclass 475. Valves in
which the adjustable member is an annular lip or baffle
concentric with the valve inlet passage.
Subclass:
477
This subclass is indented under subclass 476. Valves in
which the annular adjustable lip is on a movable valve part.
Subclass:
478
This subclass is indented under subclass 476. Valves in
which the annular adjustable lip is screw threaded for axial
adjustment along the valve inlet passage.
Subclass:
479
This subclass is indented under subclass 455. Apparatus
comprising governor valves or induction controlled inlets
associated with internal combustion engines, in which a valve
responds to a pressure differential proportional to changes
to an outlet at sub-atmospheric pressure, i.e., the induction
manifold of the engine.
SEE OR SEARCH THIS CLASS, SUBCLASS:
494 for reactor surface controlled valves of this type
controlled by super-atmospheric pressure rather than
sub-atmospheric pressure.
511 for condition responsive valves of the direct response
type, especially subclasses 517+ for direct response valves
which are biased open and subclass 526 for vacuum relief
type, and see the search notes to subclass 517.
Subclass:
480
This subclass is indented under subclass 479. Apparatus in
which the valve controlled is a second or auxiliary inlet to
the line-carrying the suction induced flow.
(1) Note. Many of patents classified in this subclass
include valves for supplying additional fuel, air or other
fluid to the flow through the intake passage of an internal
combustion engine.
SEE OR SEARCH THIS CLASS, SUBCLASS:
111 for self-correlating branched flow systems having plural
inflows, especially subclass 114 for those in which one flow
supplements another.
Subclass:
481
This subclass is indented under subclass 479. Apparatus
which includes a manual means which modifies the action of
the valve responsive to the flow of fluid.
(1) Note. This does not include devices in which the manual
or external means are mere setting or adjusting means. See
section 5, of the class definition for search notes on manual
actuation, resetting and adjustment of valves and valve
actuators.
(2) Note. See the class definition, section 3 for search
notes on plural actuators including at least one automatic
actuator and section 4, for plural valves and plural
nonautomatic actuators.
Subclass:
482
This subclass is indented under subclass 479. Apparatus
which includes means to compensate for atmospheric pressure
differential in addition to flow responsive means within the
flow line.
(1) Note. The valves are usually an unbalanced butterfly
with a pressure reactor in the wall of the flow line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
81 for system control responsive to changes in atmospheric
pressure.
111 for self-controlled branched flow systems having plural
inflows.
484 for unbalanced butterfly valves without suction
compensation means.
Subclass:
483
This subclass is indented under subclass 479. Apparatus
which includes a separate reactor surface which is responsive
to the pressure differential between the interior and
exterior of the inlet manifold.
(1) Note. See notes to subclass 494 for definition of
"separate reactor surface".
SEE OR SEARCH THIS CLASS, SUBCLASS:
494 for condition responsive reactor surface controlled
valves of general utility. See (1 Note).
Subclass:
484
This subclass is indented under subclass 479. Apparatus in
which a biased valve having at least a flat center area is
mounted in the fluid flow path and moves about a pivot
located between its edges, said valve having a dynamic
unbalance to fluid flow causing a torque which proportionally
governs the position of the valve.
(1) Note. This subject matter comprises some modification
of or addition to the conventional butterfly valve mounted at
its center, designed to control or extend its quality of
unbalance throughout its range of movement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
482 for similar valves with means for compensating for
atmospheric pressure differential.
Subclass:
484.2
This subclass is indented under subclass 455. Devices in
which the valve controlling forces are altered by a force
resulting from a fluid pressure derived for variations in the
flow of fluid in the line acting on a reactor surface other
than the valve head.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 24 for similar
structure in valves not responsive to line condition.
Subclass:
484.4
This subclass is indented under subclass 484.2. Devices in
which the reactor surface is normal to the line flow of fluid
and is in a chamber off-set from co-axial inlet and outlet
flow ports so that the reactor movement is parallel to the
line flow.
Subclass:
484.6
This subclass is indented under subclass 484.2. Devices in
which the reactor surface is in a chamber distinct from the
outlet chamber and in direct fluid communication therewith by
means of an aperture through a partition or wall through the
chambers.
SEE OR SEARCH THIS CLASS, SUBCLASS:
505.26 for similar structure in reactor surface operated
valves unassisted by additional line flow effect.
Subclass:
484.8
This subclass is indented under subclass 484.6. Devices
having an additional aperture for the accommodation of the
valve stem.
Subclass:
485
This subclass is indented under subclass 455. Apparatus
within ... in which the means sensing a change in fluid
condition within the apparatus controls the application of
another source of power for operating the flow control valve
rather than acting directly through a mechanical connection.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 25 for fluid servo-motors
for nonautomatic valve operation, and see the search notes to
subclass 25.
Subclass:
486
This subclass is indented under subclass 485. Apparatus in
which the valve is operated in response to the sensing of the
velocity of the fluid flow or to the pressure differential
along the flow line under flow condition.
(1) Note. This sensing may occur after the valve opens in
response to line pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
458 and 459+, for flow responsive valves of the safety
cut-off type.
483 for suction flow governor valves of the combustion
engine type with a reactor responsive to flow or pressure
differential along the line.
497 for valves with separate connected fluid reactor surface
sensing flow either directly or by determining pressure
differential or drop along the line.
Subclass:
487
This subclass is indented under subclass 486. Apparatus in
which the flow pressure drop across the flow line valve is
used to control the flow line valve pilot or servo system.
(1) Note. The main line valve serves as a variable flow
line restrictor for deriving a pressure difference
proportional to rate of flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
503 for similar flow responsive means in line condition
responsive valves having a reactor surface.
Subclass:
487.5
This subclass is indented under subclass 485. Devices in
which the valve is electrically actuated.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 129 for electrically
actuated valves.
Subclass:
488
This subclass is indented under subclass 485. Apparatus in
which the means sensing a change in fluid condition controls
the effectiveness of a fluid pressure which is employed for
controlling the operation of the flow controlling valve.
(1) Note. The source of fluid pressure for operating the
flow controlling valve may be external or may be the main
flow line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
105 for suction operated pilot controlled valves where the
pilot valve is itself responsive to line suction. These are
mainly milker pulsators.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 25 for fluid pressure servo
type valve actuators which are operated by external means or
do not include means sensing a change in fluid condition, and
see the search notes to subclass 25.
Subclass:
489
This subclass is indented under subclass 488. Apparatus
which includes a pressure chamber having both a valved
passage and an unvalved passage for ingress and egress of
fluid, the relative sizes of the passages being such that a
different pressure may be maintained in the chamber when the
valve passage is open than is the case when it is closed.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 33 for choked or throttled
pressure type servo actuated valves which do not include
means sensing a change in fluid condition in the line, and
see the search notes to subclass 33.
Subclass:
489.3
This subclass is indented under subclass 489. Devices in
which the unvalved passage is between the piston and the
cylinder walls.
Subclass:
489.5
This subclass is indented under subclass 489. Devices in
which the valved passage is so positioned that the pilot
valve controls the ingress of the pressure fluid to the
pressure chamber.
Subclass:
490
This subclass is indented under subclass 489. Apparatus in
which the valve controlling the servo fluid pressure is
physically located within the main or flow controlling
valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 38 for this
subject matter wherein the valve actuation is not responsive
to line condition.
Subclass:
491
This subclass is indented under subclass 489. Apparatus in
which the restricted and unvalved passage passes through the
main or flow controlling valve.
Subclass:
492
This subclass is indented under subclass 488. Apparatus in
which the fluid pressure servo-motor operates the flow
controlling valve in one direction only, the valve being
operated the other direction by a constantly acting pressure
or bias.
Subclass:
492.5
This subclass is indented under subclass 492. Devices in
which the constantly acting pressure or bias is a spring.
Subclass:
493
This subclass is indented under subclass 455. Apparatus in
which a valve means opens in response to excess pressure over
a selected maximum and also opens in response to pressure
below a selected minimum, usually to admit atmospheric air,
or opens in response to a pressure applied to either side of
the valve means.
(1) Note. The valve means may comprise a simple valve to
relieve both pressure and vacuum or reverse pressure or the
combination of both a valve for relieving high pressure and a
valve for relieving a vacuum, or pressure on the opposite
side.
SEE OR SEARCH THIS CLASS, SUBCLASS:
180 for diverse fluid containing pressure systems having a
discriminating and an abnormal pressure responsive liquid
outlet.
226 for tire inflation stems and/or chucks having plural
pressure responsive valves arranged on a common axis, one
opening to admit inflation fluid under pressure and the other
opening to relieve excess pressure in the chuck, stem or
tire.
458 for safety cut-off valves requiring reset which are
responsive to both high and low pressures or velocities.
512 for other plural direct response valves, especially
subclass 513 for those mechanically interconnected.
Subclass:
493.1
This subclass is indented under subclass 493. Apparatus
wherein one valve head carries the head and seat of a second
valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
512.2 for other plural direct response valves having this
relationship.
599.16-599.18, for systems dividing into parallel flow lines
then recombining where the valve flow control member has a
valve or valve member.
614.17 for similar structure in serial flow valves.
Subclass:
493.2
This subclass is indented under subclass 493.1. Apparatus
wherein only the carrying valve is provided with spring
biasing means.
Subclass:
493.3
This subclass is indented under subclass 493.1. Apparatus
wherein the spring for the carried valve is mounted on the
supporting valve.
Subclass:
493.4
This subclass is indented under subclass 493.3. Apparatus
wherein the spring of the carried valve abuts a stop (e.g., a
collar) on the carried valve stem.
Subclass:
493.5
This subclass is indented under subclass 493.3. Apparatus
wherein the spring of the carried valve abuts the guide for
the stem of the carried valve.
Subclass:
493.6
This subclass is indented under subclass 493.1. Apparatus
wherein both the carried and carrying valves are spring
biased.
Subclass:
493.7
This subclass is indented under subclass 493. Apparatus
wherein the axis of one valve port is perpendicular to the
axis of the second valve port. Port as used herein is the
inlet or outlet provided with the valve seat.
Subclass:
493.8
This subclass is indented under subclass 493. Apparatus
wherein the axis of one valve port is parallel to the axis of
the second valve port. See the definition of valve port
under subclass 493.7.
Subclass:
493.9
This subclass is indented under subclass 493. Apparatus
wherein the axis of one valve port is co-axial with that of
the second valve port.
SEE OR SEARCH THIS CLASS, SUBCLASS:
493.1 for coaxial ports where one valve assembly is carried
by the head of another.
Subclass:
494
This subclass is indented under subclass 455. Apparatus in
which a flow controlling valve is connected to a separate
movable nonvalving surface so as to be operated thereby, the
fluid flowing in the apparatus and being controlled by the
valve reacting on said surface, which moves in response to
variations in fluid condition in the apparatus, the motion
being transmitted to the valve.
(1) Note. The separate reactor surface may be integral with
the valving surface, as for example, in a valve with a
surface greater than that necessary to provide its valving
function, where the excess surface is subject to the pressure
of the flowing material and acts as a reactor surface to
operate or to assist in the operation of the valve.
(2) Note. Surfaces which are subject to the line fluid for
the purpose of retarding the operation of a valve (e.g.,
dashpots) are not treated as separate reactor surfaces. See
search notes below to subclass 514.
SEE OR SEARCH THIS CLASS, SUBCLASS:
458 for safety cut-off valves requiring reset which are
responsive to both high and low pressure or velocity.
461 for safety cut-off valves requiring reset which are
beyond a maximum.
469 for pop valves in which the initial flow of fluid after
opening in response to fluid pressure reacts against a
surface to effect the further opening or the closing
operation.
479 for governor valves which respond proportionally to
induction pressures in internal combustion engines.
511 for valves which respond to variations in fluid
conditions acting directly on the valves, per se, especially
subclass 513 for plural direct responsive valves mechanically
connected, in which one valve may have an actuating effect on
another, and subclass 514 for line condition direct
responsive valves having dashpots using line fluid.
613 for distribution systems comprising plural valves
arranged in series in the flow line wherein manual or
external means operate one valve which causes a change in the
condition in the flow line in order to utilize such changed
condition to effect automatic operation of the other valve in
the flow line, i.e., for systems not primarily condition
change responsive, which involve such response means
incidentally.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 15 for valves which are
closed by fluid flow reacting means after an interval having
been opened by other external means.
Subclass:
495
This subclass is indented under subclass 494. Apparatus
which include in addition to the fluid actuated reactor
surface, a manual or other external means for operating or
for causing the operation of the same valve.
(1) Note. Modifiers, which merely vary the loading or
response of the reactor surface, are not deemed to constitute
manual or other external means within this definition. For
such modifiers search should be made in the subclass
receiving the particular type of fluid actuator. See the
class definition, section 3 for search notes on plural
actuators including at least one automatic actuator and
section 5 for search notes on manual actuators and adjusting
and resetting devices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
115.01 for systems having a valve controlled surge relief
by-pass operated by a means to sense a change in pressure
(surge) in the main flow line such as may be caused by the
operation of a controlling valve.
481 for suction controlled valves which are manually
modified or adjusted.
522 for direct response valves in combination with external
means for opposing the closing bias.
613 for systems comprising plural valves arranged in series
in the flow line wherein manual or external means operate one
valve to produce a change in the condition in the flow line
in order to utilize such changed condition to effect
automatic operation of the other valve in the flow line.
Subclass:
496
This subclass is indented under subclass 494. Apparatus in
which the flow controlling valve is disclosed or claimed as
being closed in response to the reversal of the fluid flow or
to its tendency toward reversal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
106 for self-controlled branched flow systems having
reversing valves.
198 for reverse flow stops in discriminating outlets for gas
in diverse fluid containing pressure systems.
215 for back flow prevention by vacuum breaking, especially
subclasses 217+ for valved air vents.
239 for cleaning by reversing fluid flow.
Subclass:
497
This subclass is indented under subclass 494. Apparatus in
which the separate reactive surface which controls the valve
is responsive to variations in the rate of flow of fluid
through the apparatus or to variations in the pressure
differential along the line under flow conditions.
(1) Note. If a valve is described as flow responsive but is
equally responsive to static pressure, it is classified on
the latter basis. Typical examples of control means
responsive to changes in the rate of fluid flow are: (a) a
swinging vane or turbine subject to fluid flow, (b)
comparison of the pressures or pressure differences across a
fixed choke in the flow line or across the throttle valve
which regulates the flow; (c) comparison of the pressures or
pressure differences at the throat of a Venturi and at a
point upstream or downstream from such throat, (d) a
deflector subject to fluid flow and movable in a straight
line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
10 for processes of fluid handling control by the speed of
the flow.
115.03 for self-controlled branch flow systems in which a
by-pass or relief path is controlled by change in rate of
main line flow.
220 for Larner-Johnson type valves which are condition
responsive.
459 for safety cut-offs responsive to changes in rate of
flow and which require an external reset.
483 for suction flow governor valves of the internal
combustion engine type with a reactor responsive to changes
in rate of flow or pressure differential along the line as
determined under flow conditions.
486 for pilot or servo controlled valves responsive to
variations in rate of flow or pressure differential along the
line as determined under flow conditions, the pilot valves
being the flow responsive member.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 15 for valves which
compulsorily close after a predetermined time or quantity of
flow of fluid, which flow was initiated by other means.
Subclass:
498
This subclass is indented under subclass 497. Apparatus in
which the flow controlling valve is closed in response to an
increase in the rate of flow beyond a predetermined maximum.
(1) Note. The excessive flow is usually caused by a break
in the flow line.
(2) Note. The control mechanism herein, in addition to
acting to close the valve in response to an excessive flow
may also provide a pressure regulation in which the valve is
moved toward closed position at fluid flows above normal but
less than the maximum.
SEE OR SEARCH THIS CLASS, SUBCLASS:
460 for safety cut-off valves which are responsive to
excessive flow and require resetting.
499 through 504, for fluid flow regulators in which there is
not disclosure that the control valve closes in response to
an excessive flow.
Subclass:
499
This subclass is indented under subclass 497. Apparatus
wherein the separate reactor surface is a member pivoted for
oscillation or rotation, having blades, vanes or surfaces
which are exposed to the fluid flow and rotating or tending
to rotate the member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
47 for speed responsive governors for valves having, as
driving means for the governor, a turbine exposed to the
fluid flow in a conduit, in which the turbine is not a prime
mover.
332 for valves having a nonvalving motion imparted by a
turbine on the valve, as for friction reducing or antifouling
purposes.
SEE OR SEARCH CLASS:
222, Dispensing, 59 for dispensers having cut-offs operated
by rate of flow responsive means.
251, Valves and Valve Actuation, 15 for valves which are
closed after a flow period by fluid actuated means, and
subclasses 48+ for valve retarders or timers of the fluid
controlled type.
Subclass:
500
This subclass is indented under subclass 497. Apparatus in
which the valve is operated by a movable reaction member such
as a piston or diaphragm working in an expansible chamber
under the influence of two pressures taken at spaced points
in the flow line which vary as a function of the rate of
fluid flow through the line.
(1) Note. The movable reaction member mentioned above may
be integral with the controlling valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
777 for expansible chamber devices, per se.
SEE OR SEARCH CLASS:
73, Measuring and Testing, 861.42 for pressure differential
type meters.
Subclass:
501
This subclass is indented under subclass 500. Apparatus in
which the pressures to which the movable reaction member is
subject are taken on opposite sides of a fixed choke or flow
restrictor placed in the flow line.
(1) Note. The fixed choke or flow restrictor may be
adjustable, either manually or by a condition unrelated to
flow in the line.
Subclass:
502
This subclass is indented under subclass 500. Apparatus in
which the pressures to which the movable reaction member is
subject are taken at the throat of a Venturi placed in the
flow line and at another point upstream or downstream of said
throat.
SEE OR SEARCH THIS CLASS, SUBCLASS:
219 for Larner-Johnson hydraulic valves, which are located
at a point of line restriction.
SEE OR SEARCH CLASS:
73, Measuring and Testing, 861.63 for meters of the Venturi
type.
251, Valves and Valve Actuation, subclass 24 for fluid
actuated or retarded valves with Venturi assisting means, and
subclasses 123+ for a valve located at a point of restriction
in the line.
Subclass:
503
This subclass is indented under subclass 500. Apparatus in
which the pressures to which the movable reaction member is
subject are taken on opposite sides of the throttle valve
which is operated by the reaction member and which valve
regulates the fluid flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
487 for pilot or servo-controlled line condition responsive
valves in which control is by differential pressures across
the flow line valve.
Subclass:
504
This subclass is indented under subclass 497. Apparatus in
which the separate reactive surface which controls the valve
includes a choke, restriction, or deflector, in the fluid
flow line and subject to the flow of fluid, such choke,
restriction, or deflector being mounted as to be moved by the
fluid proportionally to the rate of fluid flow.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, 40 for flow restrictors in
pipes, especially subclasses 43, 45 and 46 for variable
restrictors.
251, Valves and Valve Actuation, 120 for movable or
resilient guides or deflectors combined with valves.
Subclass:
505
This subclass is indented under subclass 494. Apparatus in
which the flow controlling valve is biased toward an open
position and a change in fluid condition tends to close the
valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
224 for pressure regulators of the tire inflation type.
479 for biased open valves responsive to pressure
differential caused by suction in a combustion engine flow
line.
517 for biased open valves responsive to variations of the
fluid pressure acting directly on the valves, and see the
search notes to subclass 517.
Subclass:
505.11
This subclass is indented under subclass 505. Devices having
a port leading from the low pressure side of the valve to
waste and controlled by a normally closed pressure responsive
valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
102 for correlated supply and exhaust valves.
116.3 for correlated supply and by-pass or relief valves.
Subclass:
505.12
This subclass is indented under subclass 505. Devices in
series with another line pressure responsive valve to produce
plural stage reduction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
512 for plural serial direct response, reducing valves.
Subclass:
505.13
This subclass is indented under subclass 505. Devices in
which the fluid reactor surface, in communication with tie
inlet side of the valve, responds to changes in inlet fluid
pressure.
Subclass:
505.14
This subclass is indented under subclass 505. Devices with
means for automatically varying the opening bias on the
valve, so that a variation of fluid condition through the
valve (without closing the valve) may be obtained, (e.g., gas
supply regulators which permit a greater flow during the high
demand period).
SEE OR SEARCH THIS CLASS, SUBCLASS:
468 for similar devices which vary the bias in response to
change in thermal conditions of the fluid.
484.2 for similar devices which vary the bias by variation
of flow.
Subclass:
505.15
This subclass is indented under subclass 505.14. Devices in
which the bias is varied by an ancillary reactor surface
which responds to fluid pressure at the inlet.
Subclass:
505.16
This subclass is indented under subclass 505.14. Devices in
which the pressure of the fluid is exerted upon the surface
of a liquid free to move in such manner that fluctuations in
the pressure of the fluid will transfer the liquid from one
receptacle to another or from one portion of a receptacle to
another portion thereof, and thereby operate the regulating
valve.
Subclass:
505.17
This subclass is indented under subclass 505.14. Devices in
which the means comprises a weight varied in accordance with
the pressure of the line fluid.
Subclass:
505.18
This subclass is indented under subclass 505. Devices in
which the valve is so related to the fluid controlled that
the pressure bias imparted by the line pressure is balanced
by means connected to but not forming a portion of the valve
itself, so that the effect of line pressure tending to open
or close the valve is cancelled out at least in part.
Subclass:
505.19
This subclass is indented under subclass 505. Devices in
which the reactor surface is a liquid transferable between
plural chambers and in which the valve is actuated by means
responsive to the variation of liquid level in one chamber.
Subclass:
505.2
This subclass is indented under subclass 505. Devices
relating to the control of gas or vapor and having a distinct
reactor surface chamber and connecting passage to the flow
line whereby a liquid seal is provided which prevents line
gas or vapor from directly contacting the reactor surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
505.19 for liquid level type reactor surfaces which
inherently protect the valve actuator.
Subclass:
505.21
This subclass is indented under subclass 505. Devices
wherein the flow line comprises sequentially, the valve
chamber, a flow line or passage distinct from the outlet of
the valve chamber, and a remote isolated reactor surface
chamber the reactor surface of which is mechanically
connected to the valve.
Subclass:
505.22
This subclass is indented under subclass 505. Devices in
which the pressure fluid is communicated to a chamber
enclosing the reactor surface through a pipe external of the
chamber.
Subclass:
505.23
This subclass is indented under subclass 505.22. Devices in
which the valve casing is modified to receive the external
pipe.
Subclass:
505.24
This subclass is indented under subclass 505.22. Device in
which a lever extending out of the casing provides the means
of connecting the reactor and valve head, and also provides
an adjustable biasing means.
Subclass:
505.25
This subclass is indented under subclass 505. Devices in
which the flow line passes through the reactor surface.
Subclass:
505.26
This subclass is indented under subclass 505. Devices in
which the reactor surface is in a chamber distinct from the
outlet chamber and in direct fluid communication therewith by
means of an aperture through a partition or wall between the
chambers.
SEE OR SEARCH THIS CLASS, SUBCLASS:
484.6 for similar devices, when combined with reactor
chamber aspirating means.
Subclass:
505.27
This subclass is indented under subclass 505.26. Devices in
which the passage to the reactor surface chamber is through
the valve stem.
Subclass:
505.28
This subclass is indented under subclass 505.27. Devices in
which said passage further extends through the reactor
surface so as to apply pressure to the rear of the reactor
surface.
Subclass:
505.29
This subclass is indented under subclass 505.26. Devices in
which the valve stem passes through the communicating
aperture.
Subclass:
505.3
This subclass is indented under subclass 505.29. Devices
wherein the reactor surface is in the form of an expansible
chamber having at least two flexible walls.
Subclass:
505.31
This subclass is indented under subclass 505.29. Devices
wherein the reactor surface is in the form of a bell or
inverted cup floating in a liquid which forms a liquid seal
for the reactor surface chamber.
Subclass:
505.32
This subclass is indented under subclass 505.31. Devices in
which the inverted cup has additional members, or is
purposefully shaped, to dampen or retard its movement.
Subclass:
505.33
This subclass is indented under subclass 505.31. Devices in
which the valve head is in the inlet chamber.
Subclass:
505.34
This subclass is indented under subclass 505.29. Devices in
which the valve head is in the inlet chamber.
Subclass:
505.35
This subclass is indented under subclass 505.34. Devices in
which the valve stem through the aperture is straight and
rigidly joins the reactor to the valve which has at least one
head in the inlet chamber.
Subclass:
505.36
This subclass is indented under subclass 505.26. Devices in
which the reactor surface is in the form of a flexible
diaphragm.
Subclass:
505.37
This subclass is indented under subclass 505.36. Devices in
which the valve head is provided with a bias which opposes
the opening bias but is of less strength.
Subclass:
505.38
This subclass is indented under subclass 505. Devices in
which the reactor surface is in the outlet chamber and forms
an imperforate wall thereof.
Subclass:
505.39
This subclass is indented under subclass 505.38. Devices in
which the valve head is in the inlet chamber and has a stem,
or connector, passing through the valve part and connected
with and usually attached to, the reactor surface.
Subclass:
505.4
This subclass is indented under subclass 505.39. Devices in
which the reactor surface is a bell or inverted cup floating
in a liquid seal.
Subclass:
505.41
This subclass is indented under subclass 505.39. Devices in
which the valve stem comprises a rectilinear rod rigidly
connected to the reactor surface.
Subclass:
505.42
This subclass is indented under subclass 505.39. Devices in
which the valve is urged towards its seat in opposition to
the opening bias.
(1) Note. The stem is usually not attached to the reactor
surface, hence a valve returning force is required when fluid
pressure moves the reactor surface from the stem.
Subclass:
505.43
This subclass is indented under subclass 505.42. Devices in
which the bias tending to close the valve is located in the
reactor surface, or outlet, chamber.
Subclass:
505.44
This subclass is indented under subclass 505.38. Devices in
which the valve head is connected to the reactor surface by a
yoke.
Subclass:
505.45
This subclass is indented under subclass 505.44. Devices
wherein the valve is urged toward its seat in opposition to
the opening bias by a force of less strength.
Subclass:
505.46
This subclass is indented under subclass 505.38. Devices
wherein a mechanical movement is interposed between the fluid
pressure reactor and the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
685 for similar mechanical movements, and see the search
notes therewith.
Subclass:
505.47
This subclass is indented under subclass 505. Devices
wherein a mechanical movement is interposed between the
actuator and the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
685 for similar mechanical movements, and see the search
notes therewith.
Subclass:
506
This subclass is indented under subclass 494. Apparatus
which include a plurality of biased closed valves responsive
to variations in fluid condition, at least one of which
utilizes a separate connected reactor surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
512 for plural line condition responsive valves of the
direct response type.
631 for cyclic valves or closures and their actuators, and
see the search notes to subclass 631.
Subclass:
507
This subclass is indented under subclass 494. Apparatus
combined with means for mounting the apparatus on or
connecting it with the system from which the apparatus
derives its fluid.
(1) Note. Merely naming a conventional coupling such as an
internally threaded collar is insufficient for classification
in this subclass. There must be a recitation of the
relationship of the mounting or connecting means to the
system which is the fluid source.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 143 for mountings or
supports for valves, and see the search notes to subclass
143.
Subclass:
508
This subclass is indented under subclass 494. Apparatus in
which the separate reactor surface comprises a movable member
in which is located an orifice to be controlled, the closure
for which is either fixed with respect to the valve casing,
or has movement which is different from or less than the
possible movement of the orifice member, whereby the
controlled orifice is opened by movement of the orifice
member beyond a predetermined point.
(1) Note. Certain valves included herein have a movable
flow passage forming tubular member or sleeve, the end
surface of which comprises a seat or passage closing part to
control fluid entering the sleeve flow path, and also
comprises the surface exposed to and reacting to the fluid
pressure. Since these sleeves may or may not have the end
surface extended by a flange or diaphragm without changing
their other characteristics, all such devices have been
classified together herein, regardless of the presence or
absence of means to increase the exposed end area.
SEE OR SEARCH THIS CLASS, SUBCLASS:
511 for annular type pressure responsive valves which have
an annular cooperating seat or flow passage, but which do not
meet the requirements of (1) Note as to reactor surface
components; i.e., the exposed surface could not be extended
by enlarging the casing and increasing the area of the
exposed part of the movable member.
Subclass:
509
This subclass is indented under subclass 494. Apparatus
wherein the valve controlling the fluid flow is seated by
moving in the direction of flow of the fluid.
Subclass:
510
This subclass is indented under subclass 509. Apparatus in
which the reactor includes a member having a flexible wall
which is subject to the pressure of the fluid in the line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
784 for flexible wall expansible chambers, and see the
search notes thereto.
793 for diaphragms or bellows, per se, and see the search
notes thereto.
Subclass:
511
This subclass is indented under subclass 455. Valves which
are responsive to pressure of the line fluid on the face of
the valve disc or plug itself.
(1) Note. Since they have no other actuator, their movement
from a normal or neutral or biased position is caused solely
by change in the fluid flow or pressure in the line, and they
return to their original position when the original condition
is restored.
(2) Note. Mere check valves are included in this group of
subclasses, but a system which is not primarily condition
change responsive is not classified herein merely because it
includes one or more check valves. Instead, it is placed in
a subclass appropriate to the system claimed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.33 for a check valve (e.g., non-return valve, etc.) with
assembling or disassembling means.
508 for valves in which a tubular passage forming member
moves in response to pressure of the line fluid and is biased
closed, the tubular member having an exposed end comprising a
separate reactor surface.
599.18 for systems dividing into parallel flow lines then
recombining having a direct response valve (i.e., check
valve).
SEE OR SEARCH CLASS:
222, Dispensing, subclass 490 and 491+ for dispenser outlet
elements operated by pressure of the contents.
251, Valves and Valve Actuation, appropriate subclasses for
valves which have motor, mechanical, fluid pressure or manual
means for opening or closing, but are biased to the other
position by springs, weights, internal fluid pressure, etc.,
particularly. See (1) Note above. See also 336 for biased
valves, per se, and see the search notes to subclass 336.
Subclass:
512
This subclass is indented under subclass 511. Apparatus
including more than one valve of the type.
(1) Note. See the class definition, section 3 for search
notes on plural automatic valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247.17 for plural direct response valves combined with
liquid seal means.
506 for plural line condition responsive valves including at
least one valve which has a separate connected fluid reactor
surface.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 631 for cyclic valves and
their actuators, and see the search notes to subclass 631.
Subclass:
512.1
This subclass is indented under subclass 512. Devices in
which the valves are arranged in a single flow path and
divide the flow into parallel paths which recombine after
passing through the valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
516.11 for dividing and recombining effected by plural ports
in a seat and a single valve head.
599.11-599.15, for systems dividing into parallel flow lines
then recombining having a bypass.
Subclass:
512.15
This subclass is indented under subclass 512.1. Valves
controlled by an integral resilient member mounted so that
portions of the said member provide separate valve heads.
SEE OR SEARCH THIS CLASS, SUBCLASS:
512.4 for other plural direct response valves provided by an
integral resilient member.
Subclass:
512.2
This subclass is indented under subclass 512. Devices in
which one of the valves carries the seat for at least one
other valve and also serves as the support for the other
valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
493.1 for bi-directional flow valves of this type.
599.16-599.18, for systems dividing into parallel flow lines
then recombining where the valve flow control member having a
valve or valve member.
Subclass:
512.3
This subclass is indented under subclass 512. Devices in
which the valves are of different types, e.g., disc valves
and ball valves, or are of different size so that they
operate at different pressures.
Subclass:
512.4
This subclass is indented under subclass 512. Devices in
which the valves are integral resilient members which are
attached to the valve body in such a manner as to provide
separately operating resilient portions which control
separate ports in the valve body.
SEE OR SEARCH THIS CLASS, SUBCLASS:
512.15 for plural direct response valves provided by an
integral resilient member characterized by dividing and
recombining in a single flow path.
525 for single valves of this type.
Subclass:
512.5
This subclass is indented under subclass 512. Devices in
which the valves are urged toward or away from their seats by
the same biasing means.
Subclass:
513
This subclass is indented under subclass 512. Apparatus in
which there is a mechanical interconnection between two of
the valves such that the movement of one valve relative to
its seat in response to variation in the line condition is
transmitted to the other thereby to move it relative to its
seat.
SEE OR SEARCH THIS CLASS, SUBCLASS:
493 for valve means oppositely acting to open for either
excessive pressures or pressures below standard.
494 for condition responsive valves having a reactor surface
which is not primarily a valve, though it may have the effect
of a variable restrictor.
Subclass:
513.3
This subclass is indented under subclass 511. Devices in
which means are provided to permit limited flow through the
valve when the valve is closed, or nominally closed.
Subclass:
513.5
This subclass is indented under subclass 513.3. Devices in
which the nominally engaging surfaces of the head and/or seat
elements are so constructed or arranged that when the valve
is closed, a limited flow passage exists between said
surfaces.
Subclass:
513.7
This subclass is indented under subclass 513.3. Devices in
which a passage permitting limited flow around the head and
seat elements is provided in the valve body structure.
Subclass:
514
This subclass is indented under subclass 511. Valves
provided with a dashpot or other retarding means to prevent
or reduce chattering or hunting of the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
494 for valves having separate connected reacting surfaces
which have a positive relation to the operation of the valve,
i.e., assist in or cause either the opening or closing
movement of the valve.
SEE OR SEARCH CLASS:
188, Brakes, 297 for a dashpot of general utility.
251, Valves and Valve Actuation, 15 for flow responsive
valves having a timing retarding chamber to cut off flow
after a predetermined flow period, subclasses 48+ for valves
with fluid operated retarding means, and see the search notes
to subclass 48, and subclass 64 for valve actuators with
retarding means other than the fluid type.
Subclass:
514.3
This subclass is indented under subclass 514. Devices
wherein the end of the valve has a dashpot chamber therein.
Subclass:
514.5
This subclass is indented under subclass 514. Devices in
which the end of the valve reciprocates in a dashpot
chamber.
Subclass:
514.7
This subclass is indented under subclass 514.5. Devices
wherein an enlarged member on the end of a valve stem
reciprocates in a dashpot chamber.
Subclass:
515
This subclass is indented under subclass 511. Valves in
which the valve is associated with or mounted in a housing
provided with means for joining it with pipe at both ends,
the three elements being longitudinally aligned when
connected.
(1) Note. Many of the patents classified in this subclass
are for use in a drill string.
SEE OR SEARCH THIS CLASS, SUBCLASS:
155 for gas lift valves for wells.
SEE OR SEARCH CLASS:
166, Wells, 86.1 for a well pipe having an anchor or seal
with a valve, subclass 97.1 for a well cap or head with a
valve, and subclasses 316+ for valves, closures, or
changeable restrictors down in a well
251, Valves and Valve Actuation, 148 for valves contained in
a pipe line or coupling, and see the search notes to subclass
148.
Subclass:
515.3
This subclass is indented under subclass 515. Devices in
which a separate valve seat element is threaded into one of
the coupling elements
(1) Note. The valve head may be carried by the removable
seat element or may be attached elsewhere in the coupling.
Subclass:
515.5
This subclass is indented under subclass 515. Devices in
which the valve seat element is formed as an integral part of
one of the coupling elements or is separate but carried by
one of the coupling elements.
Subclass:
515.7
This subclass is indented under subclass 515. Devices in
which the valve seat element is clamped between separable
elements of the coupling means.
Subclass:
516
This subclass is indented under subclass 511. Valves
provided with means for selecting one of a plurality of
diverse effective areas for the valve by selecting from a
plurality of preselected valve elements, i.e., from a
plurality of valves or from a plurality of valve seats to
vary the responsiveness of the valve.
(1) Note. The plurality of elements are usually present in
the system at all times.
SEE OR SEARCH THIS CLASS, SUBCLASS:
329 for devices embodying a plurality of alternate wear
parts, one of which may be substituted for another when
required by wear or injury.
512 for means for varying the responsiveness of the
condition response device by selecting one of plural valves
of different responsiveness.
529 for selectively usable diverse biasing means for a
single condition responsive valve.
Subclass:
516.11
This subclass is indented under subclass 511. Valves wherein
a single valve head controls a plurality of ports in a single
seat, whereby the flow is subjected to an action of dividing
and recombining by its flow through the seat member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
512.1 for plural direct response valves providing dividing
and recombining a single flow line.
Subclass:
516.13
This subclass is indented under subclass 516.11. Valves
wherein the ports are arranged concentrically.
Subclass:
516.15
This subclass is indented under subclass 516.11. Valves
wherein the valve head is annular in form.
Subclass:
516.17
This subclass is indented under subclass 516.15. Valves
wherein the seat supports a post, the said post being
substantially concentric with the annular head.
Subclass:
516.19
This subclass is indented under subclass 516.17. Valves
wherein the post provides a valve stop or support such a
stop.
Subclass:
516.21
This subclass is indented under subclass 516.19. Valves
wherein the post also provides guide means for the valve.
Subclass:
516.23
This subclass is indented under subclass 516.17. Valves
wherein the post provides guide means for the valve head.
SEE OR SEARCH THIS CLASS, SUBCLASS:
516.21 for guides in combination with valve stops.
Subclass:
516.25
This subclass is indented under subclass 511. Valves
comprising a single flow path provided with a plurality of
serially arranged sealing surfaces which cooperate with a
single head element.
(1) Note. A single sealing surface or head and seat
interface comprises a single surface which is either planar
or the resulting surface formed by the rotation of either a
straight line or a smoothly curved line about the axis of the
valved port.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247.17 for a plural seating valve combined with liquid seal
means.
Subclass:
516.27
This subclass is indented under subclass 516.25. Valves
wherein the seating is sequential.
Subclass:
516.29
This subclass is indented under subclass 516.27. Valves
wherein a resilient gasket is provided at the seating surface
and the deformation of the gasket provides one seating.
Subclass:
517
This subclass is indented under subclass 511. Valves in
which a bias means is provided to maintain the valve normally
open against fluid pressure on the valve itself tending to
close or partly close the valve. The bias means may be the
weight of the valve body itself.
SEE OR SEARCH THIS CLASS, SUBCLASS:
409 for normally open float valves.
479 for governor valves biased normally open to control the
flow in a combustion engine suction line.
505 for valves with a separate connected fluid reactor
surface in which the bias tends to open the valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 336 for biased valves, per
se, and see the search notes to subclass 336.
Subclass:
518
This subclass is indented under subclass 517. Valves
comprising a pair of edge-pivoted vanes biased in opposite
directions, the pivot means comprising closely adjacent
parallel axes or both vanes being pivoted on the same axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
499 for line condition change responsive valve with a
swinging vane reactor.
Subclass:
519
This subclass is indented under subclass 517. Valves in
which the bias means is a weight which may be the weight of
the valve body itself.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 338 for weight
biases valves, per se, and see the search notes thereto.
Subclass:
519.5
This subclass is indented under subclass 519. Valves wherein
the moving element is substantially spherical.
SEE OR SEARCH THIS CLASS, SUBCLASS:
533.11 for normally closed ball valves.
Subclass:
520
This subclass is indented under subclass 519. Valves in
which the valve body is pivoted about an axis at or closely
adjacent one of its edges.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247.19 for a liquid seal combined with a pivoted valve.
521 for other direct response pivoted valves which are
biased to open position.
527 for pivoted condition responsive valves which are biased
closed.
Subclass:
521
This subclass is indented under subclass 517. Valves in
which the valve body is pivotally mounted.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247.19 for a pivoted valve combined with liquid seal means.
518 for oppositely swinging vanes comprising valve bodies.
520 for weight biased, edge pivoted condition responsive
valves.
527 for pivoted condition responsive valves which are biased
closed.
Subclass:
522
This subclass is indented under subclass 511. Valves
provided with means external to and independent of the flow
path of the fluid controlled for opening the valve against
its bias or for relieving the valve of the effect of the bias
so that normal fluid pressure will open the valve.
(1) Note. The relief of bias classifiable herein is for the
purpose of permitting the valve to blow off a normal pressure
which the valve would otherwise contain.
(2) Note. Where a bias adjusting means positively opens the
valve, classification is in this subclass.
(3) Note. See the class definition, Lines With Other
Classes and Within this Class, (1) Automatic Control, and
Subclass References to the Current Class, for search notes on
plural valves, at least one of which is automatic.
SEE OR SEARCH THIS CLASS, SUBCLASS:
456 for safety cut-off valves requiring the use of external
means to open them.
481 for suction flow governor valves with manual modifier
for the valve.
495 for line condition responsive valves with separate
connected fluid reactor surface and having manual or external
control means.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, appropriate subclasses for
valves which are regularly operated by means other then the
pressure of fluid in the line, but where the fluid in the
line may cause return to the original position, especially 12
for fluid pressure actuators and retarders.
Subclass:
523
This subclass is indented under subclass 522. Valves
provided with means for maintaining the bias relieving or
valve opening means in the bias relieving or valve opening
position.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 89 for valves with means
for blocking or disabling the valve actuator, which means may
hold the valve open, and see the search notes thereto.
Subclass:
524
This subclass is indented under subclass 511. Valves
provided with means for indicating the adjustment of the
biasing means, usually in terms of the pressure at which the
valve will open.
SEE OR SEARCH THIS CLASS, SUBCLASS:
227 for inflation valve combinations or subcombinations
provided with indicators.
551 for valves provided with indicating means, especially
subclass 556 for indicator elements rigidly carried by the
element position of which is indicated.
SEE OR SEARCH CLASS:
116, Signals and Indicators, subclass 227 for valve position
indicators where the valve is not significantly claimed.
Subclass:
526
This subclass is indented under subclass 511. Valves which
open in response to an excessive decrease in pressure, e.g.,
to admit atmospheric air.
SEE OR SEARCH THIS CLASS, SUBCLASS:
217 for back-flow prevention by vacuum breaking.
479 for suction flow governor valves associated with
internal combustion engines.
493 for plural valves, one of which opens in response to
excessive decrease in pressure.
Subclass:
527
This subclass is indented under subclass 511. Valves in
which the valve disc or plug swings around the means by which
it is mounted in the valve seat or casing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247.19 for a pivoted valve and liquid seal means combined.
448 for pivoted valves operated by float drains.
484 for unbalanced pivoted valves of the combustion engine
induction type.
520 and 521, for pivoted direct response valves which are
biased open.
Subclass:
527.2
This subclass is indented under subclass 527. Devices in
which the valve casing is provided with a removable closure
element which retains the valve head in assembled relation
with its seat.
Subclass:
527.4
This subclass is indented under subclass 527. Devices in
which the mounting of the valve permits motion of the valve
head, in addition to pivoting, in order to allow the head to
adjust itself to the valve seat.
Subclass:
527.6
This subclass is indented under subclass 527. Devices which
provide means for mounting the valve on the end of a pipe.
Subclass:
527.8
This subclass is indented under subclass 527. Devices which
are provided with means having sufficient mass to maintain
the valve in the desired position in response to gravity.
Subclass:
528
This subclass is indented under subclass 511. Valves in
which the movable member of the valve moves substantially
rectilinearly between its extreme positions. Ball valves are
included although their motion may not be strictly
rectilinear.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 318 for reciprocating
valves of general utility, and see the search notes thereto.
Subclass:
529
This subclass is indented under subclass 528. Valves in
which the biasing means comprises more than one bias force
providing element exclusive of the weight of the valve body
itself.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 336 for biased valves, and
see the search notes to subclass 336.
Subclass:
530
This subclass is indented under subclass 528. Valves having
a cam member associated with a biasing means to determine the
effect of the bias.
SEE OR SEARCH THIS CLASS, SUBCLASS:
524 for bias adjustment means and indicator for condition
responsive valves.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 336 for biased valves, and
see the search notes thereto.
Subclass:
531
This subclass is indented under subclass 528. Valves in
which the bias is applied through a lever the effective
length of which varies as the valve opens or closes.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 233 for lever
actuated valves in which the leverage varies during
actuation.
Subclass:
532
This subclass is indented under subclass 528. Valves in
which the force of gravity is utilized to bias the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
519 for valves of the check valve type which are weight
biased to an open position.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 338 for valves
having a mechanical actuator and weight biasing means for
maintaining the valve in position.
Subclass:
533
This subclass is indented under subclass 532. Valves in
which the weight of the valve itself is utilized as the
biasing means.
Subclass:
533.11
This subclass is indented under subclass 533. Valves in
which the moving element is substantially spherical.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247.21 for a ball valve combined with liquid seal means.
519.5 for normally open ball valves.
Subclass:
533.13
This subclass is indented under subclass 533.11. Valves in
which the means for controlling the movement of the valve
element is separable from the valve body.
Subclass:
533.15
This subclass is indented under subclass 533.11. Valves in
which the valve seat is separable from the valve body.
SEE OR SEARCH THIS CLASS, SUBCLASS:
533.13 for separable seats combined with separable ball
valve cages.
Subclass:
533.17
This subclass is indented under subclass 533. Devices in
which means are provided to guide the head to or from its
seat.
Subclass:
533.19
This subclass is indented under subclass 533.17. Devices in
which the valve head is guided by means stationary with
respect to the seat and engagable with the outer periphery of
the valve head.
Subclass:
533.21
This subclass is indented under subclass 533.17. Devices in
which there is provided a rod-like guiding element usually
substantially smaller in diameter than the head.
Subclass:
533.23
This subclass is indented under subclass 533.21. Devices in
which nonvalving structure carried by the head engages a stop
or abutment when the valve closes.
(1) Note. Pump valves having a resilient or deformable head
or seat sealing member are found here. Valves in which the
stop structure is also a nonresilient valving structure which
seats in sequence with a valve having a resilient seat are
found elsewhere. See Search This Class, Subclass, below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
516.29 for valves in which the stop structure is also a
nonresilient valving structure which seats in sequence with a
valve having a resilient seat.
Subclass:
533.25
This subclass is indented under subclass 533.21. Devices in
which there are a plurality of rodlike elements projecting
from opposite faces of the valve head.
Subclass:
533.27
This subclass is indented under subclass 533.21. Devices in
which the valve head is apertured and slides on the
stationary rod-like element extending through the aperture.
Subclass:
533.29
This subclass is indented under subclass 533.21. Devices in
which the valve seat and the guide for the rod-like element
constitute a unit.
Subclass:
533.31
This subclass is indented under subclass 533.21. Devices in
which the casing closure and the guide for the rod-like
element constitute a unit.
Subclass:
534
This subclass is indented under subclass 532. Valves in
which the weight is coaxial with the valve disc or plug.
Subclass:
535
This subclass is indented under subclass 528. Valves in
which the elasticity of a resilient element is used to
provide the biasing force.
SEE OR SEARCH THIS CLASS, SUBCLASS:
525 for resilient material valves of the direct response
type and see the search notes thereto.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 336 for spring biased
valves of this class, and see the search notes thereto.
Subclass:
536
This subclass is indented under subclass 535. Valves
provided with means preventing or reducing the impingement of
the pressure fluid on the spring, usually a flexible wall,
deflecting baffles or a telescoping enclosure for the
spring.
SEE OR SEARCH THIS CLASS, SUBCLASS:
790 for expansible chamber devices with additional biasing
means.
793 for diaphragms and bellows, per se.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 335.1 for valves
provided with a hermetic flexible wall seal which separates
the valve actuator from the controlled fluid.
Subclass:
537
This subclass is indented under subclass 535. Valves in
which the resilient member is placed under tension to hold
the valve normally closed.
SEE OR SEARCH CLASS:
267, Spring Devices, 69 for elastic extension devices, per
se, especially subclasses 73+ for tension springs.
Subclass:
538
This subclass is indented under subclass 535. Valves in
which the valve is a cylindrical plug cooperating with a
hollow cylindrical valve seat, there being ports in the
cylindrical wall of either piston or seat which are opened
and closed by reciprocating movement of the piston in the
cylindrical seat.
SEE OR SEARCH THIS CLASS, SUBCLASS:
792 for piston type expansible chamber devices.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 62 for piston type fluid
pressure actuators for valves, and subclasses 318+ for
reciprocating valves of this class, and see the search notes
thereto.
Subclass:
539
This subclass is indented under subclass 535. Valves in
which the moving element is substantially spherical.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247.21 for a ball valve combined with liquid seal means.
449 for float arm operated ball valves.
519.5 for normally open ball valves.
Subclass:
539.5
This subclass is indented under subclass 539. Valves wherein
a follower (e.g., reciprocating rod) is interposed between
the spring and the ball.
Subclass:
540
This subclass is indented under subclass 535. Valves in
which the spring is coaxial with the valve.
Subclass:
540.11
This subclass is indented under subclass 540. Valves having
retaining means for broken valve parts, e.g., an auxiliary
chamber or stop on the valve stem by means of which broken
valve parts are prevented from entering the cylinder of
compressors, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
343 for means to protect a person or thing from injury
through contact with the system or parts thereof.
Subclass:
541
This subclass is indented under subclass 540. Valves in
which the spring is located on the side of the valve which is
exposed to the fluid pressure to which the valve is to be
responsive, i.e., the spring and valve are on opposite sides
of the valve seat and the spring is in the fluid conduit or
container.
Subclass:
542
This subclass is indented under subclass 540. Valves in
which the valve has a stem which passes through the biasing
spring, which is mounted between abutments one of which is
fixed and comprises a guide for the stem and the other of
which is carried by or comprised in the valve head and/or
stem.
SEE OR SEARCH THIS CLASS, SUBCLASS:
541 for valves of this type in which the spring is in
contact with the pressure fluid, the spring and valve head
being on opposite sides of the valve seat.
Subclass:
543
This subclass is indented under subclass 542. Valves which
provide a transverse support for the valve stem, spaced from
the valve and supported in its location by a plurality of
elongated, circumferentially spaced members parallel to the
valve stem, the support usually comprising a spring
abutment.
Subclass:
543.13
This subclass is indented under subclass 540. Valves wherein
the head and spring are on the same side of the seat and the
spring abuts a removable guide for the valve stem.
Subclass:
543.15
This subclass is indented under subclass 540. Valves wherein
the head slides on a guide-rod which is concentric with the
spring.
Subclass:
543.17
This subclass is indented under subclass 540. Valves wherein
the spring guides the head to its seat.
Subclass:
543.19
This subclass is indented under subclass 540. Valves wherein
the guide is cage-like and guides a stemless valve by sliding
contact with the outer periphery thereof.
Subclass:
543.21
This subclass is indented under subclass 540. Valves wherein
a guide means integral and coplanar is provided on the
stemless valve disk, said guide means contacting the walls of
the valve casing.
Subclass:
543.23
This subclass is indented under subclass 540. Valves wherein
the head is provided with a guide and the spring is on the
side of the head opposite the guide.
Subclass:
544
This subclass is indented under the class definition.
Apparatus having means for separating one or more materials
from a fluid mixture either by providing a physical barrier
to the passage of particles over a given size or by providing
a trap where heavier material may be deposited.
(1) Note. Means for separating solid material from fluid in
pressure fluid valve actuating means or in servo-motor supply
lines are excluded from this subclass. Patents which include
such separating means in pressure fluid valve actuation or
servo-motor operating systems are classified on the basis of
those other features, for which classification has been
provided, but cross referenced here when useful disclosures
are present.
SEE OR SEARCH THIS CLASS, SUBCLASS:
140 for siphons with strainers, filters, separators or
sediment traps.
237 for distribution systems having positively acting
cleaning means.
583 for distribution systems with cleanout openings.
599.14-599.15, for systems dividing into parallel flow lines
then recombining having a bypass including a cleaning,
treating, or heat transfer feature.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, appropriate subclasses for
screens in pipes and conduits, especially subclass 41 for
restrictors combined with screens.
210, Liquid Purification or Separation, 418 for means to
filter a liquid combined with a flow controller for the
material being treated and see the search notes thereunder.
222, Dispensing, 189.06 for dispensers combined with
screens, strainers and foraminous guards.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
Subclass:
545
This subclass is indented under subclass 544. Apparatus in
which the separating means includes plural elements.
(1) Note. The separating means may be of similar or
dissimilar types, and may be positioned in the same or in
different flow passages.
Subclass:
546
This subclass is indented under subclass 544. Apparatus in
which the separating means includes a chamber for trapping
sediment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
237 for distribution systems embodying positively acting
cleaning means.
583 for distribution systems in which there is an access
opening for cleaning purposes.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 294 for fluid
handling means combined with diverse means for liquid
separation, especially subclasses 302 and 313; and subclasses
513+ for flow controller combined with a gravitational
separator, especially subclasses 533+.
Subclass:
547
This subclass is indented under subclass 544. Apparatus in
which the separating means is a strainer which is movable
with respect to the flow path without being removed from the
apparatus.
(1) Note. This subclass includes strainers which may be
moved from one position to another in the system, e.g., may
be selectively positioned in one flow path or in another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
861 for spouts, valves or deflectors at the junction of
three flow paths, shiftable from one to another of two
outlets.
Subclass:
549
This subclass is indented under subclass 544. Apparatus in
which the separating means is a foraminated or porous body or
hollow strainer arranged with the fluid inlet in an axial
direction and the outlet in a generally radial direction or
vice versa.
Subclass:
550
This subclass is indented under subclass 544. Apparatus in
which the separating means is a strainer defining a
substantially plane surface and disposed perpendicular to
flow path.
Subclass:
551
This subclass is indented under the class definition.
Apparatus comprising fluid handling means combined (1) with
an indicator, register, recorder, or alarm responsive to a
condition or position of a part of the apparatus or of the
fluid in the apparatus or (2) with means which permits
inspection of normally hidden parts of the apparatus or of
the fluid inside the apparatus.
(1) Note. A movable element performing a blocking,
disabling or actuating function is not considered to be an
indicator unless it or a cooperating member has some indicia
with position indicating significance.
SEE OR SEARCH THIS CLASS, SUBCLASS:
213 for liquid level responsive whistles in diverse fluid
containing pressure systems.
227 for inflating stems and/or chucks with gauge or
indicator.
524 for direct responsive valves biased closed with bias
adjustment indicator.
586 for telltales which have no indicia associated therewith
and which also serve as blocking means for access opening
covers.
SEE OR SEARCH CLASS:
73, Measuring and Testing, appropriate subclasses for
pressure, level, temperature, etc., measuring and indicating
means, per se.
116, Signals and Indicators, appropriate subclasses for
mechanical signals and indicators.
222, Dispensing, 23 for recorders, signals indicators, etc.,
in dispensers and subclasses 154+ for inspection devices in
dispensers.
251, Valves and Valve Actuation, subclass 297 for detents
that inherently give an audible signal or click.
340, Communications: Electrical, 870.01 for quantitative
electric telemetering systems of general application, and
subclasses 603+ for nonquantitative electric alarms
responsive to fluent material condition, such as level.
Subclass:
552
This subclass is indented under subclass 551. Apparatus
comprising more than one indicator, register, recorder, alarm
or inspection means or more than one of the beforementioned
types of subcombinations.
SEE OR SEARCH CLASS:
222, Dispensing, 25 for plural indicators, etc., in
dispensers.
Subclass:
552.5
This subclass is indented under subclass 552. Apparatus
wherein the information conveyed by the indicators is in some
code not obvious to an uninformed operator, whereby the
operation is similar to that required by combination locks in
that the indicators must be positioned in a predetermined
relationship to allow flow through the system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
383 for apparatus including a lock or seal.
613 for mere serial valves in a single flow path.
Subclass:
552.7
This subclass is indented under subclass 551. Apparatus
calibrated in time.
SEE OR SEARCH CLASS:
368, Horology: Time Measuring Systems or Devices,
appropriate subclasses for time indicators, per se.
Subclass:
553
This subclass is indented under subclass 551. Apparatus
comprising an indicator which gives information as to the
position or range of motion of a movable or adjustable part
of the apparatus, e.g., a valve or adjustable wall.
(1) Note. Usually the indicator is a scale and pointer but
an edge or other distinct line on an element of the apparatus
may serve as the pointer.
SEE OR SEARCH THIS CLASS, SUBCLASS:
227 for gauge or indicator with means for inflating or
deflating inflatable articles.
524 for bias adjustment indicators for safety valves.
SEE OR SEARCH CLASS:
116, Signals and Indicators, 200 for scale and pointer
subcombinations, especially subclass 277 for valve position
indicators.
222, Dispensing, 41 for means for indicating position and/or
extent of motion in dispensers.
Subclass:
554
This subclass is indented under subclass 553. Apparatus in
which electrical signal system means are used to sense and/or
indicate the position or extent of motion in valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
392 for electrical characteristic sensing in level
responsive or maintaining systems.
SEE OR SEARCH CLASS:
340, Communications: Electrical, 870.01 for quantitative
electric telemetering systems of general application.
Subclass:
555
This subclass is indented under subclass 553. Apparatus in
which the indicator shows the position or selection for use
of one of a plurality of paths.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 42 for indicators showing
selection from plural dispenser outlets.
Subclass:
556
This subclass is indented under subclass 553. Apparatus in
which an element of the indicator is an integral part of, or
is rigidly carried by, the movable or adjustable part.
SEE OR SEARCH CLASS:
222, Dispensing, 47 for similar indicators in dispensers.
Subclass:
556.3
This subclass is indented under subclass 556. Devices
wherein the movable indicator element comprises a pointer.
Subclass:
556.6
This subclass is indented under subclass 556.3. Devices
wherein the pointer is an integral part of the valve handle.
Subclass:
557
This subclass is indented under subclass 551. Apparatus
provided with a visual indicator, audible alarm or recorder
which is responsive to the pressure of the fluid in the flow
path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
213 for liquid level responsive whistles in diverse fluid
containing pressure systems.
227 for pressure gauges or indicators combined with
inflatable article (e.g., tire) filling chucks and/or stems.
524 for means for indicating the bias adjustment of a safety
valve.
SEE OR SEARCH CLASS:
73, Measuring and Testing, 700 for fluid pressure gauges,
per se.
116, Signals and Indicators, 264 for fluid flow indicators.
222, Dispensing, 23 for dispensers having pressure
responsive indicators, especially subclass 39 for audible
signals.
Subclass:
558
This subclass is indented under subclass 551. Apparatus
provided with a visual indicator, audible alarm or recorder
which is responsive to the level of the liquid in some part
of the apparatus.
(1) Note. An indicator comprises means which has at least
an indicating and a nonindicating position, or a plurality of
indicating positions, and does not require inspection of the
material in the system to establish the distinction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
213 for whistles used as liquid level responsive indicators
in systems involving gas pressure storage over or
displacement of liquid.
559 for sight glasses. See (1) Note.
SEE OR SEARCH CLASS:
73, Measuring and Testing, 290 for liquid level and depth
gauges, particularly subclass 322.5 for floats, per se.
116, Signals and Indicators, 227 for liquid level
indicators.
222, Dispensing, subclass 51 for float level indicators for
dispensers.
Subclass:
559
This subclass is indented under subclass 551. Apparatus
which provides means which permit or facilitate observation
or inspection of the fluid inside the apparatus or of
normally invisible parts of the apparatus.
SEE OR SEARCH CLASS:
73, Measuring and Testing, subclass 323 for sight glasses,
per se.
222, Dispensing, 154 for dispenser combined inspection
devices comprising gauge tubes, sight openings, transparent
flow line sections or graduated transparent containers.
Subclass:
560
This subclass is indented under the class definition.
Apparatus which comprises devices or parts in addition to or
combined with distribution systems and (1) having functions
other than material handling or (2) which serve to perfect
the material handling apparatus for its intended purpose.
(1) Note. For a definition of a distribution system, see
subclass 561.
(2) Note. Subcombinations otherwise classifiable in Class
251, Valves and Valve Actuation, have been included herein if
combined with subject matter of the types defined in (1) and
(2) of the subclass definition above.
(3) Note. This subclass includes for example, Fluid supply
or valve actuation to or from diving bells, drinking troughs
or cups not part of the flow system, carburetor mount
protection, testing devices, anti-freeze liquid chambers and
control means for devices or operations not a part of the
material handling system.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 192 for dispensers with
miscellaneous combined features and the preceding subclasses
for particular combinations provided for therein.
Subclass:
561
This subclass is indented under the class definition.
Systems comprising means for confining flowable material
during its flow or making it available for flow and either
causing or controlling its flow or potential flow, which
means is (1) a combination of material containing or
confining means, such as tanks or conduits, in flow relation
with flow causing means, such as pumps, (2) combinations of
two or more material confining devices in flow relation,
including branched flow lines and hydrostatic devices, such
as standpipes or vertically adjustable outlet and overflow
conduits in open communication with the confined body of
flowable material; and (3) combinations of material confining
devices with flow controlling means when more of the material
confining device is claimed than is necessary to mount the
flow controlling means.
(1) Note. Flow controlling means comprise valves with or
without actuating means, closures for flow passages, flow
restrictors, baffles and guides.
(2) Note. Passages which divert material from the flow
system for the purpose of actuating or controlling a pump or
valve or similar part which is solely concerned with the
mechanics of handling the main flow of the material are not
considered flow confining means.
(3) Note. This subclass provides for flow dividers of the
nonautomatic nonvalved, nonaccumulating type.
SEE OR SEARCH THIS CLASS, SUBCLASS:
115.01 and 118.01+, for self controlled branching systems
having plural outflows. See (3) Note.
262 for flow dividing by passage through or overflow from
plural compartments. See (3) Note.
597 for systems having a multiple inlet with a multiple
outlet.
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
631 for cyclically actuated valves. Lines With Other
Classes and Within This Class, (2) Plural Valves, and
Subclass References to the Current Class, for search notes on
plural nonautomatic valves.
861-877, for systems having a flow control means for
branched passages.
SEE OR SEARCH CLASS:
73, Measuring and Testing, 863 for a sampling system which
obtains a predetermined portion of a mass of material to be
tested.
222, Dispensing, appropriate subclasses, for subject matter
which comprises distribution systems as defined above, but
which has in most instances particular application to the
problems of vending or handling fluent solids.
251, Valves and Valve Actuation, 12 for valve actuators
which divert and use a part of the material being handled in
the system to actuate or retard valves controlling the fluid
flow in such systems. See (2) Note, above.
399, Electrophotography, 237 for liquid developer applied to
a latent image within an electrophotos:graphic device.
Subclass:
562
This subclass is indented under subclass 561. Systems
including means whereby a tank may be filled from a faucet
and drained into a sink or basin associated with the faucet.
(1) Note. The tank is usually a dish or clothes washer or
some equivalent device which receives and discharges a
quantity of water, which may be used either in the tank or
during the process of discharge.
SEE OR SEARCH THIS CLASS, SUBCLASS:
357 for static structural installations of fluent material
handling means in buildings.
374 for fluent material handling means combined with house
furnishings.
603 for distribution systems comprising attachments of the
mixing type for two conventional faucets.
Subclass:
563
This subclass is indented under subclass 561. Systems
including a flow path in which at least a portion of the
fluent material is continuously circulated in a closed
circuit. Such system may comprise (1) one or more return
by-passes in which a portion of the fluent material in a flow
line is diverted from and returned to the flow line at a
point upstream from the point of diversion, or (2) a system
in which the main portion of a flow continuously returns to
the starting point, and one or more branches are provided for
tapping and removing from the circuit a portion of the fluent
material or one or more branches are provided for admitting
fluent material from an outside source into the circuit, or
(3) all the material circulates in a confined path without
addition or removal of material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
115.01 for by-passes controlled by condition change in the
main line.
407 for level responsive systems in which an auxiliary
measuring chamber is connected at its top and bottom to the
accumulation chamber the level in which is to be controlled
or sensed.
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 318 for dispenser systems
involving return of material to the supply.
Subclass:
564
This subclass is indented under subclass 563. Systems
comprising a circulating system in which the thermal
characteristics of the system are such that temperature
differences exist at spaced points in the device and cause
flow of the fluent material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
334 especially subclasses 337 and 340 for similar structure
in which heat exchange is the primary consideration, and see
the definition of subclass 334 for collected search notes on
fluent material handling systems involving heat or heating
means.
Subclass:
564.5
This subclass is indented under subclass 561. System
including an additive reservoir in a shunt on a main line,
the reservoir including noncommunicating compartments defined
by a blind follower actuated by main line pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
205.5 for an intermediate fluid layer as a follower in a
similar shunt feeder system.
SEE OR SEARCH CLASS:
222, Dispensing, 386 for a dispenser having a discharge
assistant comprising a container with a follower. See the
notes thereunder.
Subclass:
565.01
With pump:
This subclass is indented under subclass 561. Subject matter
wherein the system includes a pump that supplies energy to a
fluid by suction or pressure or both. [figure]
[caption]Figure 1: A typical example of the subject matter.
A - Automatic washing machine system; B - Pump; C - Drain
pipe; D - Drain hose.
(1) Note. The combination of a pump and a tank generally
will be classified in this class (137). However, a single
nominally recited tank reservoir, chamber, pump, or other
similar fluid holding means will be classified elsewhere.
See SEARCH CLASS notes below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
13 for a process wherein the addition of material or energy
effects the flowing fluid.
147 for a pump or liquid displacement device for starting a
siphon-type fluid handling system.
206 for a gas and liquid containing system wherein the gas
under pressure is employed to displace liquid.
282 for a hydrant-type fluid handling system having a pump
or an ejector.
SEE OR SEARCH CLASS:
222, Dispensing, Class Definition, (9) Note for other
pump-tank relationships; and 372 for a material supply
container and a discharge assistant with casing including a
pump.
417, Pumps, for a single nominally recited tank reservoir,
chamber, pump, or other similar fluid holding means; see
Class Definition, (3) Note; 46 for a condition responsive
pump drive motor by controlling drive motor motive fluid; and
subclasses 279+ for condition responsive control of pumped
fluid.
418, Rotary Expansible Chamber Devices, appropriate
subclasses for a rotary expansible chamber pump, per se.
Subclass:
565.11
Pumped fluid control:
This subclass is indented under subclass 565.01. Subject
matter including regulating means for varying the flow of a
gas or liquid. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Gas pump; B - Conduit; C
- Barrier or restriction; D - Materially reduced opening; E -
Branch pipe to burner.
(1) Note. Patents for pump motor control are classified
elsewhere. See SEARCH CLASS notes below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
109 for a self-controlled branched flow system.
SEE OR SEARCH CLASS:
415, Rotary Kinetic Fluid Motors or Pumps, 110 for an
internal fluid biased seal or packing.
417, Pumps, for pump motor control; subclass 270 for
condition responsive fluid control; and subclasses 279+ for
condition responsive control of pumped fluid.
Subclass:
565.12
Manual:
This subclass is indented under subclass 565.11. Subject
matter including a nonautomatic valve mechanism for
selectively regulating the fluid flow. [figure]
[caption]Figure 1: A typical example of the subject matter.
A - Manual control; B - Connecting pipe; C - Hydraulic pump;
D - Electric motor; E - Reservoir or tank; F - Normally open
switch; G - Actuating lever.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 213 for manually actuated
mechanical movement actuator, subclasses 231+ for a
lever-type mechanical movement actuator, and subclass 294 for
a flexible actuator (e.g., Bowden cable or wire, chain).
Subclass:
565.13
Fluid pressure responsive:
This subclass is indented under subclass 565.11. Subject
matter wherein means sensing the change in fluid force
controls the effectiveness of pumped fluid flow. [figure]
[caption]Figure 1: A typical example of the subject matter.
A - Pump; B - Fluid pressure responsive valve; C - Pilot
line; D - Fluid system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
455 for a valve controlled in response to a change in the
fluid condition occurring within the system or the line
including the valve and list for a self-controlled branched
flow system including a bypass relief controlled by a main
line condition.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 28 for a fluid
actuated pilot valve, subclasses 61+ for a flexible wall
expansible chamber valve actuator, and subclasses 62+ for a
piston-type expansible valve actuator.
417, Pumps, subclass 295 for condition responsive pumped
fluid control including inlet throttle or stop valve and
subclasses 307+ for a pressure responsive relief or bypass
valve.
Subclass:
565.14
And pilot valve:
This subclass is indented under subclass 565.13. Subject
matter comprising an auxiliary controlling operation of a
fluid pressure operator valve. [figure] [caption]Figure 1: A
typical example of the subject matter. A - Reservoir; B -
Fluid; C - Main flowline; D - Pump; E - Discharge; F - Pilot
valve; G - Control circuit.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 25 for a pilot or servotype
with an alternative pressure source or pilot valve,
subclasses 28+ for a fluid actuated pilot valve, subclasses
30.01+ for an electrically actuated valve, and subclasses
118+ for a material guide or restrictor.
417, Pumps, subclass 252 for a pressure responsive
interstage discharge and subclass 428 for a bypass control.
Subclass:
565.15
Direct response valve:
This subclass is indented under subclass 565.13. Subject
matter including (a) a valve head having a face and (b) a
nonreturn element wherein the nonreturn element is responsive
to pressure of a line fluid. [figure] [caption]Figure 1: A
typical example of the subject matter. A - Discharge; B -
Tank or reservoir; C - Outlet hose assembly; D - Inlet; E -
Inlet valve; F - Flexible hose; G - Check valve; P - Pump.
SEE OR SEARCH THIS CLASS, SUBCLASS:
511 for a direct response check valve.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, subclass 136 for a
fluid pressure or material level responsive flow control
system including a check valve.
Subclass:
565.16
Electric:
This subclass is indented under subclass 565.11. Subject
matter wherein the regulating means is an electrically
operated valve.
SEE OR SEARCH CLASS:
222, Dispensing, 59 for automatic control wherein the cutoff
is operated by rate of flow responsive mechanism.
251, Valves and Valve Actuation, 129.01 for an electrically
actuated control valve.
Subclass:
565.17
Combined with fluid receiver:
This subclass is indented under subclass 565.01. Subject
matter wherein the system includes a receptacle or container
for accepting gas or liquid. [figure] [caption]Figure 1: A
typical example of the subject matter. A - Reservoir; B -
Sump; C, D - Pumps; M - Motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
577 for a system with a tank or reservoir with a movable or
adjustable outlet or overflow pipe; subclasses 590+ for a
system with a tank or reservoir having internally extending
flow guide, pipe or conduit; and subclasses 896+ for a
multiple inlet, single outlet system including means to
promote mixing or combining of plural fluids.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 318 for a discharge assistant such
as an impeller or a pump with a bypass or supply to a
container and subclasses 333+ for a fluid motor operated
discharge assistant.
261, Gas and Liquid Contact Apparatus, subclass 70 for a
float controlled, valved fluid distribution system; and
subclasses 72.1+ for a fluid distribution system including a
liquid supply tank.
Subclass:
565.18
Compressed air supply unit:
This subclass is indented under subclass 565.17. Subject
matter comprising means for supplying fluid at a pressure
higher than the atmospheric pressure. [figure]
[caption]Figure 1: A typical example of the subject matter.
A - Compressor unit; B - Storage reservoir; C - Unloader
governor; D - Pipe supplies fluid under pressure from
compressor to reservoir; E - Valve body; F - Operating handle
(valve).
SEE OR SEARCH THIS CLASS, SUBCLASS:
571 for a system wherein plural tanks or compartments are
connected for a serial flow.
899.4 for a wheeled fluid compressor and fluid storage
tank.
SEE OR SEARCH CLASS:
222, Dispensing, 3 for gas or vapor dispensing and
subclasses 401+ for a container-mounted fluid pressure
generating pump or pulsator.
417, Pumps, 44.2 for pressure responsive motor controls
responsive to pumped fluid pressure.
Subclass:
565.19
Hydraulic power unit:
This subclass is indented under subclass 565.17. Subject
matter comprising a fluid reservoir, a pump for withdrawing
fluid from the reservoir, or further including one or more
selector valves together with a fluid motor to supply high
pressure fluid to another device. [figure] [caption]Figure
1: A typical example of the subject matter. A - Well
casing; B - Impulse actuated pump; C - Hydraulic cylinder; D
- Accumulator (load compensating reservoir); E - Housing; F -
Liquid storage tank; G - One-way valve.
SEE OR SEARCH CLASS:
60, Power Plants, 413 for controlling the structure storing
the work driving energy such as an accumulator.
91, Motors: Expansible Chamber Type, 418 for a hydraulic
motor with a motive fluid valve.
222, Dispensing, 383.1 for a container mounted pump or
pulsator.
417, Pumps, subclass 287 for controlling the pumped fluid of
the plural diverse capacity pump units and subclasses 440+
for an expansible chamber-type pump including a bypass valve
for control of pumped fluid.
Subclass:
565.22
And jet-aspiration type pump:
This subclass is indented under subclass 565.01. Subject
matter including a pump wherein a motive fluid and a driven
fluid are brought into intimate contact in an enclosed flow
path, the motive fluid having a higher velocity than the
driven fluid and imparting energy to the driven fluid by the
action of entrainment contact. [figure] [caption]Figure 1:
A typical example of the subject matter. A - Pump; B - Tank
or reservoir; C - Jet-aspiration pump; D - Diffuser; E -
Vent; F - Drain valve.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, 76 for an
injector-type gas and liquid contact apparatus where there is
a mutual exchange of properties between the fluids.
417, Pumps, 65 wherein one fluid is pumped by contact or
entrainment with the other, subclasses 76+ for a jet pump
having a motive fluid generating pump, subclasses 87+ for
diverse pumps including a jet pump, and subclasses 151+ for a
jet pump.
Subclass:
565.23
Vacuum pump:
This subclass is indented under subclass 565.01. Subject
matter wherein the device or machine creates a system
pressure lower than the ambient pressure. [figure]
[caption]Figure 1: A typical example of the subject matter.
A - Vacuum chamber; B - Movable member in chamber; C - Casing
with sealing liquid; E - Preliminary pump; F - Final pump.
SEE OR SEARCH CLASS:
417, Pumps, 148 for a vacuum generator.
Subclass:
565.24
Resiliently mounted pump:
This subclass is indented under subclass 565.01. Subject
matter wherein the device or machine is supported on a
vibration dampening element. [figure] [caption]A - Tank; B -
Motor; C - Pump; D - Outlet manifold; E - Resilient washer; F
- Tank pipe; G - Moulded resilient rings; H - Rubber plugs.
SEE OR SEARCH CLASS:
417, Pumps, subclass 363 for a resiliently mounted pump or
motor.
Subclass:
565.25
Hand pump:
This subclass is indented under subclass 565.01. Subject
matter wherein the device or machine for supplying energy is
operated manually. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Pump chamber; B -
Plunger; C - Handle.
SEE OR SEARCH CLASS:
417, Pumps, subclass 374 for a manual actuation of pump with
an additional motor drive and subclass 425 for a separate
manual and motor driven pumping member.
Subclass:
565.26
Multiple inlet with multiple outlet:
This subclass is indented under subclass 565.01. Subject
matter including a fluent material branched flow line having
two or more admission passages and two or more exhaust
passages, wherein the admission passages and the exhaust
passages are joined by one or more fluent material flow
lines. [figure] [caption]Figure 1: A typical example of the
subject matter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
597 for a fluid handling system with multiple inlets,
multiple outlets; and subclasses 861+ for a system with
individual flow control means for branched passages.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 340 for plural
distinct separators having parallel filters with a flow
controller.
Subclass:
565.27
Downstream cyclic distributor:
This subclass is indented under subclass 565.01. Subject
matter including a distributing device receiving the
discharge of the pump for sequentially establishing the
communication with the pump fluid and operating to divide the
fluid discharged by the pump into at least two separate flow
paths leading to points of fluid utilization. [figure]
[caption]Figure 1: A typical example of the subject matter.
A - Supply tank; B - Feed pump; C - Fuel injection pump; D -
Pump casing; E, F - Plungers; G - Cyclic cam; H - Pump drive
shaft; J - Relief valve.
SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, 448 for a fuel injection
system with a fuel pump flow regulation including a
sequential distributor.
Subclass:
565.28
Distributor part unitary with movable pump part:
This subclass is indented under subclass 565.27. Subject
matter wherein an element of the distributing device is
integral with a member of the device or machine which is in
motion.
Subclass:
565.29
Plural:
This subclass is indented under subclass 565.01. Subject
matter having at least two or more pumps. [figure]
[caption]Figure 1: A typical example of the subject matter.
A[subscrpt]1[end subscrpt]- Pump one; A[subscrpt]2 [end
subscrpt]- Pump two.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 255 for dispensers having plural
discharge assistants all of which are pumps.
417, Pumps, 2 for plural motor driven pumps having control
of a pump drive motor in response to a condition of the pump
or pump fluid.
Subclass:
565.3
Serial:
This subclass is indented under subclass 565.29. Subject
matter wherein two or more pumps are arranged in regular
succession for fluid communication with each other. [figure]
[caption]Figure 1: A typical example of the subject matter.
A - First housing; B - Second housing; C - First pump; D -
Second pump; E - Booster pump; F - Spray gun.
SEE OR SEARCH THIS CLASS, SUBCLASS:
571 for plural tanks or compartments which are connected for
serial flow.
SEE OR SEARCH CLASS:
417, Pumps, 201 for a rotary nonexpansible pump in series
with another diverse pump, subclasses 205+ for diverse pumps
in series, subclasses 244+ for pumps with successive stages,
subclasses 515+ for plural pumping chambers with mechanically
actuated distributor, and subclasses 521+ for plural pumping
chambers.
Subclass:
565.31
With single motive input:
This subclass is indented under subclass 565.3. Subject
matter wherein two or more pumps are driven by one prime
mover. [figure] [caption]Figure 1: A typical example of the
subject matter. A - Motor; B - Drive shaft; C, D, E, F, G -
Series of pumps; H, J, K, L, M - Vessels in series.
SEE OR SEARCH CLASS:
417, Pumps, subclass 350 for pumping members oppositely
disposed from a single motor.
Subclass:
565.32
One pump driven by motive fluid from the other:
This subclass is indented under subclass 565.31. Subject
matter wherein one pump additionally supplies gas or liquid
as a power source for a motor to drive another device.
[figure] [caption]Figure 1: A typical example of the subject
matter. A - Reservoir; B - Pressure pump; C - Supply motor
pump; D - Supply inlet; E - Pressure outlet; F - Intake of
pressure pump; G - Outlet of pressure pump; H - Fluid
pressure user; J - Pressure inlet of supply motor pump.
SEE OR SEARCH CLASS:
417, Pumps, subclass 382 for plural pumping members with one
additionally supplying motive fluid for the second.
Subclass:
565.33
Parallel:
This subclass is indented under subclass 565.29. Subject
matter wherein the pumps discharge separate fluid flows to
parts of the system other than one another. [figure]
[caption]Figure 1: A typical example of the subject matter.
A - Beginning of pipeline; B, C - Inlet piece; D - Central
supply pipe for oil; E - Oil pump; F - Annular water supply
channel; G - Water pump.
(1) Note. This subclass takes plural parallel pump systems
regardless of whether the pump outputs are supplied to
separate devices or are combined.
SEE OR SEARCH THIS CLASS, SUBCLASS:
255 for plural tanks or compartments with parallel flow.
SEE OR SEARCH CLASS:
415, Rotary Kinetic Fluid Motors or Pumps, subclass 155 for
plural, independently adjustable vane or working fluid
control means; and subclasses 198.1+ for plural rigidly
related blade sets.
Subclass:
565.34
Reserve or surge receiver:
This subclass is indented under subclass 565.17. Subject
matter including a pump and (a) a reservoir or a holding tank
under atmospheric pressure usually at an elevation above the
pump, and in open or check controlled communication with the
pump outlet line to receive surplus fluid for storage or to
absorb sudden rise of pressure, or (b) a parallel supply from
a different line or from a container supplied from a source
other than the pump.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, 26 for a pressure
compensator for a pipe or conduit.
222, Dispensing, 129 for a dispenser having plural sources
or supply containers.
417, Pumps, 540 for an expansible chamber-type pump having a
pulsation dampening fluid receiving space.
Subclass:
565.35
With pump bypass:
This subclass is indented under subclass 565.01. Subject
matter having means whereby fluid in the system may either
pass through the pump or be caused to flow around the pump.
[figure] [caption]Figure 1: A typical example of the subject
matter. A - Inlet conduit; B - Discharge conduit; C - Bypass
connecting inlet conduit to outlet conduit; P - Motor driven
pump; T - Timer.
SEE OR SEARCH THIS CLASS, SUBCLASS:
115.01 for a self-controlled branched flow system including
bypass or relief controlled by a main line condition.
563 for a closed circulating system including one or more
return bypasses wherein a portion of the fluent material in a
flow line is diverted from and returned to the flow line at a
point upstream from the point of diversion and subclass 599.1
for a flow passage with a bypass connection.
599 for bypasses in distributing systems, and see the search
notes to subclass 599.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 318 for a discharge assistant with
a bypass or return to the supply.
417, Pumps, subclass 283 and 284 for a condition responsive
pumped fluid control with a bypass or relief valve and
subclass 440 for an expansible chamber-type pump having a
separate noncyclic bypass valve.
Subclass:
565.36
Drain valve actuator mounted on pump:
This subclass is indented under subclass 565.01. Subject
matter having a pump associated with fluid delivery tubing,
usually vertically positioned in a well, the tubing being
provided with a drain valve which has an actuator mounted on
or supported by the pump housing, the pump mounting, or a
part thereof. [figure] [caption]Figure 1: A typical example
of the subject matter. Note: Drain valve for pump: Valve is
attached to pump tube. The operating rod for valve extends
through platform, and handle on the rod engages the housing
on the platform.
SEE OR SEARCH THIS CLASS, SUBCLASS:
206 for a gas pressure storage for displacement of liquid
and subclass 593 for a head-establishing standpipe or
expansion chamber (e.g., surge tanks).
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 145 for an apparatus
including a pipe having a valve mounted on the side thereof,
including a structure disclosed for use as a well tube drain,
and wherein an actuator for the valve is mounted on the
tube.
417, Pumps, subclass 434 for a pump provided with a separate
port on a noncyclic valve for draining the pump portion.
Subclass:
565.37
Fluid sump:
This subclass is indented under subclass 565.17. Subject
matter including pit, depression, or reservoir serving as (a)
a drain or (b) a receptacle for liquid to be stored for a
later use. [figure] [caption]Figure 1: A typical example of
the subject matter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
563 for a closed circulating system having a similar pump.
SEE OR SEARCH CLASS:
60, Power Plants, 477 for a pressure fluid source as a motor
including a ram driven by fluid which is pumped from the
reservoir and having means for pressurizing, vacuumizing, or
venting the reservoir.
222, Dispensing, 383.1 for a discharge assistant such as a
supply container and a pump including container mounted pump
or pulsator.
Subclass:
571
This subclass is indented under subclass 561. Systems in
which two or more tanks or compartments are connected in such
manner that all tanks except the last in the flow sequence
deliver fluid only to one other tank and to no other type of
receiver.
(1) Note. The containers other than the last in the series
may have plural outlets but all the outflow of one must be to
one other container, and all may have additional inflow from
sources other than a tank.
SEE OR SEARCH THIS CLASS, SUBCLASS:
130 for siphons with discharge controlling receivers.
255 for plural tanks of which two or more have outflows to
receivers other than to successive tanks, and see subclasses
263 and 265 for plural tanks connected for series-parallel
flow.
406 for communicating measuring vessels for sensing weight
of accumulated fluid.
428 for float valves in separate communicating float
chambers.
453 for series flow by barometric feed between a supply tank
and a receiver.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 133 for dispensers having a
separate inflow line connected to a tank and measuring trap
system, and subclasses 424.5+ for dispensers having plural
series connected compartments where the second one is a trap,
i.e., a measuring or separating means receiving or
segregating material from the first.
Subclass:
572
This subclass is indented under subclass 571. Systems in
which the plural tanks are so constructed that they may be
separated from one another and in which the passage by which
the tanks are connected contains a valve or closure.
(1) Note. The separation is not in the normal use of the
apparatus, but is usually for cleaning or replacement of
parts of a system without loss of the main body of fluid, as
in a transformer radiator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
320 for devices for tapping a pipe, keg or apertured tank
under pressure, wherein the pipe, etc., has a valved outlet,
the valve being actuated by the tapping device.
454 for series tanks of the barometric type with a shut-off
between the supply tank and receiver.
614 for a flow device having serial valves and/or closures
and a disconnectable coupling.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, 22 and 110+ for receivers removably
associated with a filling supply for discharge.
Subclass:
573
This subclass is indented under subclass 571. Systems in
which fluid passes through the tanks or compartments in a
zigzag path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
334 for heating exchange systems having convoluted flow
paths.
SEE OR SEARCH CLASS:
193, Conveyors, Chutes, Skids, Guides, and Ways, 27 for
zigzag conveyor chutes.
251, Valves and Valve Actuation, subclass 127 for flow paths
with valves and zigzag type flow restrictors.
Subclass:
574
This subclass is indented under subclass 571. Systems
comprising a container having plural compartments formed by
plates or walls in the flow path but only partially closing
it.
SEE OR SEARCH THIS CLASS, SUBCLASS:
262 for plural flow dividing compartments formed by weirs,
baffles, etc.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 127 for baffles in
a valve inlet or outlet for restricting flow through the
valve.
Subclass:
575
This subclass is indented under subclass 571. Systems in
which a flow passage leads from the top of one tank to the
bottom of the next tank in the series.
Subclass:
576
This subclass is indented under subclass 571. Systems in
which the tanks or compartments are connected by an opening
in a wall common thereto.
SEE OR SEARCH THIS CLASS, SUBCLASS:
406 for systems controlled by the weight of accumulated
fluid which is sensed in a communicating chamber.
428 for liquid level responsive or maintaining systems
having a control float in a separate communicating float
chamber.
Subclass:
577
This subclass is indented under subclass 561. Systems
comprising a tank having a discharge passage which may be
moved or adjusted with respect to the tank to (1) remove
material from a particular part of the tank, or (2) determine
the level of material retained in the tank and/or the amount
withdrawn from the tank.
SEE OR SEARCH THIS CLASS, SUBCLASS:
101.29 for a swinging outlet pipe controller in a self
proportioning system.
152 for means for mounting siphons.
395 for apparatus for controlling outflow from a tank which
is liquid level responsive or liquid level maintaining.
438 for float arm operated valves associated with a movable
nozzle or inlet terminal.
590 for tanks with internally extending flow guides or pipes
which are not movable.
615 for articulated or swinging spouts or discharge outlets
for distributing systems where the flow conduit is not
mounted on a tank.
SEE OR SEARCH CLASS:
222, Dispensing, 434 for adjustable overflow and/or outlet
pipes for varying trap chamber volume in dispensers.
Subclass:
577.5
This subclass is indented under subclass 577. Systems
including a conduit placed or adapted to be placed within a
receptacle, e.g., tank, reservoir or swimming pool, and means
arranged to traverse the inlet end of the conduit in a
generally horizontal direction, usually to remove sediment
from the receptacle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
565 for similar systems including pumps.
590.5 for nondraining overflow type liquid removers which
have inlet conduits extending to the bottom of the
receptacle.
899 for vehicle mounted fluid handling means.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclass 1.7
for submerged devices having cleaning means for that class,
and subclass 246.5 for tanks with attached cleaners for that
class.
210, Liquid Purification or Separation, 523 for
gravitational separators and mechanical liquid removers.
294, Handling: Hand and Hoist-Line Implements, 68.22 for
hoisting buckets or bailers.
Subclass:
578
This subclass is indented under subclass 577. Systems in
which the intake end of the movable outlet is supported by a
float.
SEE OR SEARCH THIS CLASS, SUBCLASS:
152 for siphons in which the intake end is supported by a
float in the supply tank.
386 especially subclasses 409+ for float controlled valves
in liquid level responsive or maintaining systems.
Subclass:
579
This subclass is indented under subclass 577. Systems in
which the movable outlet comprises a pipe or spout which is
mounted to swing with respect to the tank to control the
level within the tank.
(1) Note. The outlet pipe may be external or internal with
respect to the tank, but control of fluid flow depends on
movement of the pipe rather than on valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
615 for articulated or swinging flow conduits, and see the
search notes to subclasses 615 and 616.
Subclass:
580
This subclass is indented under subclass 561. Systems
comprising a relatively movable fluid supply and fluid
receiver normally joined by rotating or longitudinally
sliding or telescoping elements forming a shifting flow
passage at right angles to the direction of movement of the
elements to allow fluid flow between the supply and receiver
during relative movement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
257 for the combination of a relatively rotatable tank group
and filling head in which the tank group and filling head are
connected by a running joint.
277 for hydrants of the water crane type having a rotatable
riser which is also vertically movable the connection between
the riser and its supply frequently including a running
joint.
355.16 for running joints between parts of the system,
usually between the inlet and discharge portions of a hose
wound on a reel and permitting fluid flow during relative
movement.
581 for distribution systems comprising a movable tank, and
see the search notes thereto.
SEE OR SEARCH CLASS:
239, Fluid Sprinkling, Spraying, and Diffusing, 195 for
sprinkler devices having a hose holder or reel and a running
joint between parts of the system to permit fluid flow during
relative movement.
Subclass:
581
This subclass is indented under subclass 561. Systems,
including a tank mounted for movement with respect to
supporting means, the supporting means not being positively
recited in the claims, but movement of the tank being
inherent in the operation of the device or required in
causing or controlling flow of material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
38 for systems with flow control by inertia or change of
position of the system.
170 for feed traps movable into discharge relationship with
a pressurized receiver.
257 for rotatable tank groups for sequential filling and
discharge.
313 for leakage or drip collectors comprising a relatively
movable receptacle and drain pipe or outlet.
376 for tanks with supports.
408 for gravitating tanks in liquid level responsive
systems, and see the search notes thereto.
899 for systems with vehicular supports, and see the search
notes to subclasses 351 and 899.
SEE OR SEARCH CLASS:
222, Dispensing, 160 for dispensers having a movably mounted
supply container, and subclasses 608+ for ambulant dispensing
systems.
Subclass:
582
This subclass is indented under subclass 561. Systems having
means for preventing splashing of a liquid stream located in
the path of flow of the liquid but not located in the conduit
which carries the liquid, i.e., usually mounted in the tank
receiving the liquid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
592 for tanks having internally extending inlet pipes, and
see the search notes thereto.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 118 for valves combined
with a material guide or restrictor in the flow passage which
may reduce turbulence of the liquid, and see the search notes
to subclass 118.
Subclass:
583
This subclass is indented under subclass 561. Systems having
two or more openings at least one of which functions to vent
gases to or from the system or serves as an opening
permitting access thereto of persons or of tools other than
those contributing to the intended fluid handling operation
of the system.
(1) Note. An opening through which a valve actuator extends
is not considered an opening in the system.
SEE OR SEARCH THIS CLASS, SUBCLASS:
43 for vent opening or closing on tipping container.
136 143 and 144, for vents and air release means for
siphons.
154 especially subclasses 173+, 179+ and 197+, for gas
release from diverse fluid containing pressure systems, and
213+ for liquid level responsive gas vents or whistles in
systems having gas pressure stored or maintained over
liquid.
216 for back flow prevention by provision of air vents in
liquid flow lines.
223 for means to relieve excess pressure in tires,
especially in connection with inflation means.
237 for devices having openings for the introduction of
cleaning fluids or claimed cleaning tools.
283 for hydrants having removable valves and valve seats.
326 for containers in which a valve in the bottom can be
removed through an opening in the top of the container.
327 for devices having disassembly tool engaging features.
364 for valve and meter wells.
597 for apparatus having a plurality of inlets with a
plurality of outlets.
602 for apparatus including tanks having a plurality of
inlets and a single outlet.
613 for tanks having an inlet and an outlet.
SEE OR SEARCH CLASS:
4, Baths, Closets, Sinks, and Spittoons, 209, especially
subclasses 211, 218 and 219+ for ventilation means for house
plumbing or sewers.
222, Dispensing, subclass 442 for dispenser supply container
and measuring trap combinations having a vent passage for the
trap; subclasses 478+ for dispensers having plural fluid flow
openings, including vents.
Subclass:
584
This subclass is indented under subclass 583. Systems in
which one of the openings is an access opening and another is
an outlet for fluid contents of the system.
(1) Note. The access opening admits tools other than those
contributing to the intended operation of the device, as for
cleaning or removal of parts, or allows workmen to reach into
or enter the container.
(2) Note. Openings to admit an actuator or drain an
actuator housing are not considered openings in the system
nor access openings for this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
237 for devices having openings for the introduction of
cleaning fluids or claimed cleaning tools.
283 for hydrants having removable valves and valve seats.
326 for containers having means by which a valve in the
bottom can be removed through an opening in the top of the
container or by which such removal is facilitated.
327 for devices having disassembly tool engaging features.
342 for systems providing support for a workman.
364 for valve and meter wells.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 291 for detachable valve
actuators, and see the search notes thereto and (2) Note,
above.
Subclass:
585
This subclass is indented under subclass 584. Systems in
which the access opening is formed in a tank, such as a tank
car, usually comprising a manhole, and in which the outlet is
at the bottom of the tank.
(1) Note. The patents herein are directed for the most part
to structures comprising a tank car having a valved outlet in
the bottom therein and a dome having a manhole at the top of
the tank which allows manual access to the valve actuator
and/or removal of valve parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
283 for hydrants having the valve and valve seat removable
through the casing.
326 for containers having means by which a valve at the
bottom of a tank can be removed through an opening in the top
or by which such removal is facilitated. See (1) Note.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 510 for tanks having an outlet
element in the bottom and a controller therefor extending
through the tank and operated from the top.
251, Valves and Valve Actuation, 144 for tanks having the
valve actuator passing through the tank, but not emerging
through an inlet or manhole.
Subclass:
586
This subclass is indented under subclass 585. Systems in
which the actuator for the valved outlet performs an
additional function in the system by interengaging with or
extending into the access opening in one position of the
valve thereby preventing the application of a closure to the
access opening while the bottom valve is open and/or
indicating the open condition of the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
553 for indicators for fluid delivery systems comprising
means having indicia or attention attracting means other than
the mere position of the part for indicating the position or
extent of motion of valves or other system parts.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 483 for plural interlocked
controllers and/or closures for plural openings in a
dispensing system.
Subclass:
587
This subclass is indented under subclass 583. Systems in
which one of the openings is a gas vent for a tank and
another is a liquid inlet and/or outlet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
136 143 and 144, for vents and air release means for
siphons.
154 for gas release from diverse fluid containing pressure
systems, especially subclasses 197+ for discriminating
outlets for gas in diverse fluid containing pressure
systems.
213 for gas vents in systems utilizing a gas pressure over a
liquid in which the vent opens or closes in response to
liquid level, the gas escape frequently producing a signal
whistle.
215 for air vents in liquid lines comprising vacuum breakers
for back flow prevention.
469 and 511+, for safety valves, and see the search notes
thereto.
SEE OR SEARCH CLASS:
220, Receptacles, subclass 366.1 for vents in metallic and
other receptacles, subclass 86.1+ for filling attachments for
receptacles.
222, Dispensing, subclass 39 for audible signals in
dispensers, subclasses 478+ for gas vents combined with other
openings in dispensing systems, especially subclass 479 for
vent pipes substantially coterminous with an outlet pipe, as
in barometric devices, and subclass 481.5 for dispensing
systems having movable, flexible or remotely connected vent
pipes.
Subclass:
588
This subclass is indented under subclass 587. Systems in
which the vent and the liquid passage are formed in a common
mounting adapted to be attached to or removed from the supply
container as a unit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
212 for unitary mountings for gas and liquid fluid flow
passages where the liquid passage is an outlet and the vent
is an inlet for gas under pressure.
SEE OR SEARCH CLASS:
222, Dispensing, 400.7 for unitary mountings applied to
dispensers, the vent being a gas inlet for a displacing
fluid, and subclasses 478+, especially subclass 479 for vents
combined with dispensed material inlets or outlets.
Subclass:
589
This subclass is indented under subclass 583. Systems having
a valved discharge conduit and means connecting such conduit
with the atmosphere downstream of the valve, whereby the
conduit may be drained of liquid after the valve has been
closed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
215 for air vents in liquid lines comprising siphon breakers
for back flow prevention.
312 for apparatus for collecting leakage or drip.
596 for apparatus comprising stop and waste valves, and see
the search notes thereto.
Subclass:
590
This subclass is indented under subclass 561. Systems
comprising a tank having a material guide or flow pipe
extending into the interior of the tank.
(1) Note. Valved flow conduits which extend into the tank
only far enough to provide for lateral flow passages and/or
receive fastening or mounting means are not included in this
group of subclasses, but are classified on the basis of the
valve and/or actuator in succeeding subclasses.
(2) Note. Interiorly extending flow pipes and conduits are
included when in addition to the fact of interior extension
some result or function of the extension is expressed or is
inherent, as (1) to prevent or minimize freezing, (2) for the
purpose of decanting the liquid contained in the tank, (3)
for deriving a representative sample of the fluid in the
tank, (4) to admit fluid below the liquid level, (5) to
provide an outlet for pump or fluid displacement discharge,
etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
434 especially subclasses 437, 438, 440, and 442+ for float
arm operated inlet valves at the inlet end of an internally
extending inlet pipe.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, 308 for filters with
upwardly extending internal flow guides.
222, Dispensing, subclass 382 and 464.1+ for dispensers
having an internally extending outlet pipe, and subclasses
547 and 564 for dispensers having a flow guide or restrictor
within the supply container.
251, Valves and Valve Actuation, 118 for valves with
material guides in the flow line, subclass 144 for a tank
comprising a single flow path device provided with a single
valve, and subclass 339 for valved devices wherein the valve
actuator extends through a fluid inlet or outlet.
Subclass:
590.5
This subclass is indented under subclass 590. Systems in
which the material flow or guide means has laterally spaced
inlet and outlet portions with (1) the end of the outlet
portion positioned above the end of the inlet portion, (2)
means, such as a vent, positioned relative to the end of the
outlet portion so as to cut-off flow at an upper level.
(1) Note. These devices are intended to withdraw sediment
and liquid from the bottom of the tank but to stop discharge
when the liquid level drops to the outlet of the external
portion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
123 for siphons.
577.5 for pipes having positioning means for a traversing
inlet.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclass 1.7
for submerged cleaners there provided for, and subclass 246.5
for tanks and attached cleaners there provided for.
210, Liquid Purification or Separation, 523 for
gravitational separators and mechanical constituents movers,
and subclasses 532.1+ for gravitational separators having
heavier constituent traps.
Subclass:
591
This subclass is indented under subclass 590. Systems in
which the internally extending pipe comprises a conduit of
inverted U-shape.
(1) Note. In order that the conduit be considered U-shaped,
the shorter leg must be of substantial length.
SEE OR SEARCH THIS CLASS, SUBCLASS:
123 for siphon type fluid handling devices.
216 for antisiphon devices wherein an inverted U-shaped pipe
is provided with a vent at the highest point to prevent back
flow, the normal use of the device not being as a siphon.
440 for float arm operated valve associated with a U-shaped
inlet, usually mounted in a tank.
Subclass:
592
This subclass is indented under subclass 590. Systems in
which the internally extending pipe is a fluid inlet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
434 for float arm operated valves mounted on flush tank
inlets, especially subclasses 437, 438, 440, and 442+.
SEE OR SEARCH CLASS:
220, Receptacles, 86.1 for inlet attachments for
receptacles.
Subclass:
593
This subclass is indented under subclass 561. Systems
comprising an expansion chamber or a vertically extending
pipe or tank adapted to be placed in open communication with
a source of liquid and functioning as a storage or
pressure-maintaining reservoir or to increase the head
against which liquid from the source must exert pressure.
(1) Note. This subclass includes patents for extensions
attached to the vertical outlets of irrigation pipelines
whereby a greater head of water to be discharged may be
maintained without overflow, and risers to be attached to
basement drains whereby the overflow level of water backing
into the drain may be raised.
SEE OR SEARCH THIS CLASS, SUBCLASS:
207 for apparatus for suppressing surges in a liquid in
which gas is trapped in a dome over the liquid.
272 for valved vertically extending delivery risers of the
hydrant type.
568 for distribution systems comprising pumps combined with
means for reducing surge or pulsations in the liquid being
pumped.
777 for expansible chamber devices, per se.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, 26 for conduits combined
with pressure compensators.
417, Pumps, 540, for an expansible chamber type pump having
fluid pulsation dampening means associated therewith.
Subclass:
594
This subclass is indented under subclass 561. Systems
involving two or more fluent material flow lines which do not
unite within the scope of the combination of elements
claimed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
87.01 for systems involving plural noncommunicating flow
paths with automatic control of one flow path in accordance
with a condition in the other flow path.
127 for plural siphons discharging in parallel from plural
tanks.
255 for plural tanks with parallel outflows.
625.18 for valve units having noncommunicating flow paths.
SEE OR SEARCH CLASS:
222, Dispensing, 129 for dispensers having plural sources.
239, Fluid Sprinkling, Spraying, and Diffusing, 418 for
fluid distributors having separately supplied plural flow
paths, the fluids combining downstream of the outlet, and
subclass 549 for a distributor having plural outlet, each
supplied by a separate fluid, the distributor being of
general utility even though disclosed as a burner.
Subclass:
595
This subclass is indented under subclass 594. Systems having
at least one valve in each of two or more noncommunicating
flow lines, the valves in the noncommunicating flow lines
being connected to a single operating means so as to be
operated thereby.
SEE OR SEARCH THIS CLASS, SUBCLASS:
601.01-601.12, for systems dividing into parallel flow lines
then recombining including valves having a common operator
therefor.
607 for systems having a multiple inlet having a flow
control valve in each inlet having a common valve operator.
627 for systems having a sequential distributor or collector
type.
627.5 for systems having a sequentially closing and opening
alternately seating flow controllers.
628-630.22, for systems having a sequentially progressive
opening or closing of plural valves.
862-871, for systems having flow control means for branched
passages including a common valve operator.
Subclass:
596
This subclass is indented under subclass 561. Device
comprising a valve controlled flow line and valve controlled
exhaust passage connected to the line downstream of the flow
control valve, whereby the supply through the flow line may
be cut off and the downstream portion of the line may be
drained through the exhaust passage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
61 for low temperature responsive supply and exhaust.
62 for low temperature responsive drains.
74 for drain outlets with heat fusible closures.
102 for supply and exhaust type self-correlating systems,
especially subclass 107 for waste valves responsive to flow
stoppage.
143 for vent type siphon breakers.
216 for air vents in liquid flow line for back flow
prevention.
226 for coaxial inflation and relief valves for pressure
controlled tire inflation.
281 and 302+, for supply and exhaust valves associated with
hydrants.
312 for apparatus for collecting leakage or drip.
570 and 733+, especially subclasses 735+ and 738+ for drain
valves mounted on well pipes and similar valve mountings.
589 for outlet lines extending downwardly from a valve and
vented for draining.
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
625.2 for valve units of the supply and exhaust stop and
vent or drain types.
627.5 for supply and exhaust valves having an intermediate
position in which both valves are closed.
631 for valves with cyclic action or actuators, and see the
search notes to subclass 631.
SEE OR SEARCH CLASS:
222, Dispensing, 424.5 for measuring traps of the stationary
type which are filled and drained through multiple or
multiway valves.
251, Valves and Valve Actuation, appropriate subclasses,
especially subclasses, 23, 89, 94, 110 for valves of the stop
and waste, stop and vent, or drain types.
Subclass:
596.1
This subclass is indented under subclass 596. Devices in
which the exhaust valve is biased toward one of its
positions.
Subclass:
596.12
This subclass is indented under subclass 596. Device
including an additional valve to connect the upstream side of
the main valve directly to exhaust so that the fluid does not
pass through a downstream port of the main valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
Subclass:
596.13
This subclass is indented under subclass 596.12. Device
wherein the supply and exhaust valve controls the fluid flow
to or through the by-pass valve.
Subclass:
596.14
This subclass is indented under subclass 596. Device in
which the valves are actuated by fluid pressure motive means
controlled by an auxiliary or pilot valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 25 for pilot valve
controlled fluid actuated valves.
Subclass:
596.15
This subclass is indented under subclass 596.14. Device in
which a single pilot valve controls a plurality of valve
actuating motor chambers.
Subclass:
596.16
This subclass is indented under subclass 596.14. Device in
which the pilot valve is operated by electric motive means.
Subclass:
596.17
This subclass is indented under subclass 596. Device in
which a valve is operated by a power driven actuating means.
Subclass:
596.18
This subclass is indented under subclass 596.17. Device in
which the motor is actuated by a fluid.
Subclass:
596.2
This subclass is indented under subclass 596.1. Devices in
which the exhaust valve is biased to closed position.
Subclass:
597
This subclass is indented under subclass 561. Systems
comprising a fluent material branched flow line having two or
more inlets or admission passages and two or more outlets or
exhaust passages, such admission passages and exhaust
passages being joined by one or more fluent material flow
lines, i.e., flow combining followed by flow dividing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
563 for closed circulating systems which may be comprised of
plural inlets, outlets and connecting flow lines.
599.03-599.04, for systems having inlets where one or more
flow lines divide into parallel flow lines then recombine.
625 for valve units having similar passages.
Subclass:
598
This subclass is indented under subclass 561. Systems
comprising a liquid flow passage between the master cylinder
and the brake or slave cylinder, including means in the line
to control the flow of fluid between said cylinders.
(1) Note. This is essentially a residual subclass for
systems not provided for in Class 303, Fluid-Pressure and
Analogous Brake Systems, and Class 60, Power Plants,
subclasses 54.5+, and consists principally of flow control
means, generally termed "hill holders", which trap a column
of liquid in the brake line to maintain the brake cylinder in
its expanded position with the brakes engaged, together with
means to permit an increase in the volume of the trapped
liquid to intensify the braking effort.
SEE OR SEARCH CLASS:
303, Fluid-Pressure and Analogous Brake Systems, appropriate
subclasses for braking systems of the fluid pressure type.
See (1) Note.
Subclass:
599.01
Dividing into parallel flow paths with recombining:
This subclass is indented under subclass 561. Subject
matter comprising a fluent material branched flow line having
a single inlet or admission passage and a single outlet or
exhaust passage, wherein the admission and the exhaust
passages are being joined by two or more flow lines or valved
controlled flow passages.
(1) Note. All the parallel flow passages may not be open
simultaneously. One may even be broken or severed for a
repair purpose.
(2) Note. Bypasses established for power or control purposes
in the system are not considered to form a parallel flow line
within the flow system. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Feed pipe with free end
"B"; C - Discharge pipe with free end "D"; E - Joint for
connecting pipe "A" and "C"; F - Connecting flange (feed
pipe); G - Connecting flange (discharge pipe); H - Branch
pipes (feed); J - Branch pipes (discharge).
SEE OR SEARCH THIS CLASS, SUBCLASS:
89 for mixture condition maintenance or sensing,
self-correlating, or correlating system where flow is divided
and recombined.
110 for a self proportioning or correlating system for a
self-controlled branched flow system dividing and
recombining.
115.01-115.28, for a self-correlating or correlating system
having a bypass controlled by a main line condition.
170.5 for a diverse fluid containing pressure systems having
a foam control in gas liquid having a conditioning trap or
chamber for recarbonization.
170.6 for a diverse fluid containing pressure systems having
a foam control in gas liquid having a conditioning trap or
chamber including a bypass.
171-204, for a diverse fluid containing pressure systems
having fluid separating traps or vents.
247.29 for a liquid seal in liquid flow line where flow
liquid forms a seal in divided and recombined passages.
462 for a line condition change responsive valve having a
safety cutoff reset by a pressure equalizing valve or
bypass.
563-564.5, for systems having a closed circulating system.
569 for systems having a pump and a bypass for it.
596.12-596.13, for systems involving a pump bypass controlled
by supply and exhaust valves.
625.28-625.39, for systems dividing into parallel flow lines
then recombining having a multi way valve unit.
629-630.15, for systems having sequentially opening or
closing of plural valves for pressure equalizing or auxiliary
shunt flow.
801 for nozzles, spouts and terminal deflectors the mounting
of which may involve a spider or bar in the flow line.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Products, subclasses 40-46 for a
flow line restrictor that may involve dividing the line
longitudinally.
166, Wells, subclass 148 for a well conduit with a
controllable passage between central chamber and space below
a packer having an upwardly biased check valve and means for
opening or bypassing it.
222, Dispensing, subclass 318 for a discharge assistant
having a bypass or return to supply or subclass 443 for a
discharge assistant having a trap chamber cut off and a
bypass or free flow adjustment.
251, Valves and Valve Actuation, subclasses 12-63.6 for a
valve actuated or retarded by fluid, especially subclass 51
for a retarder or timer controlled by a line pressure
connected dashpot or choke chamber having a choke bypass or
relief means, or subclass 55 for a retarder or timer
controlled dashpot or choke chamber having a choke bypass or
relief means.
Subclass:
599.02
With fluid coupling (e.g., railway car hose coupling,
truck-trailer oil system coupling, etc.)
This subclass is indented under subclass 599.01. Subject
matter comprising a self-sealing device or a separable flow
joint wherein steam or air intervenes between moving members
to transmit pressure and torque or a joint for a conduit
adapted to carry steam or air under pressure such that the
escape of steam or air from the conduit is prevented when the
joint is made or broken.
(1) Note. It is a device to couple or uncouple section of
the conduit without loss of the fluid.
(2) Note. Included in this subclass are patents wherein
steam or air is used between cars of a train comprising a
receiving portion and an inserting portion, wherein the
inserting portion operates the means for opening or closing a
valve of cooperating coupling as the inserting portion is
received by the receiving portion of the cooperating
coupling. [figure] [caption]Figure 1: A typical example of
the subject matter. A - Pair of complimentary members; B -
Coupler heads; C - Fastening bolts; D - Stems; E - Steam
pipes or hose connections; F - Passage with branches "G" and
"H"; G, H - Branches; J - Head seats snugly in socket "L"; K
- Expansion springs; L - Socket; M - Valve; N - Valve seat.
SEE OR SEARCH THIS CLASS, SUBCLASS:
614-614.06, for couplings having a valve in each of
separable flow sections.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 149-149.7 for a
valve operated by joining flow path sections or subclass
149.8 for a valve operated by the motion of a flow path.
285, Pipe Joints or Coupling, subclasses 65-79 for a
coupling having identical halves (e.g., railway car hose
coupling, etc.) or subclass 99 for a coupling with a fluid
pressure seal having a coacting opposing duplicate.
Subclass:
599.03
System having plural inlets:
This subclass is indented under subclass 599.01. Subject
matter comprising a system having two or more entrance flow
lines wherein at least one entrance flow passage is divided
and recombined. [figure] [caption]Figure 1: A typical example
of the subject matter. A - Shower valve system; B - Selector
valve; C, D - Inlets; E - Outlet; F, G - Flow control valves;
H - Flow inlet; J - Bypass inlet; K - Valve disc element; L -
Valve body; M, N - Pair of opposite ports; P, Q - Pair of
opposite ports; R - Valve operating handle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
597 for systems having a multiple inlet with a multiple
outlet.
602 for systems having a multiple inlet with a single
outlet.
SEE OR SEARCH CLASS:
366, Agitating, subclasses 177.1-181.8 for plural related
feeders having separate outlets to a mixing chamber.
454, Ventilation, subclasses 261-269 for a ventilation
system having an inlet airway including a structure for
mixing plural air streams together.
Subclass:
599.04
Having digital flow controller:
This subclass is indented under subclass 599.03. Subject
matter wherein at least one of the parallel flow paths
provide a specific flow rate controlled by a valve which is
completely open or closed (the valve itself provides no
adjustable metering). d (1) d ( ) Note. This subclass
includes a flow controller that can be manually set to a
numerical value. d (2) d ( ) Note. The flow rate
determining means can be a serial restrictor or restricting
means in the valve itself. [figure] [caption]Figure 1: A
typical example of the subject matter. A, B - Two sources of
binary gas mixtures; C, D - Pressure reducing valves; E -
Stabilizing unit; F - Unit for setting proportion between gas
mixture from unit "E"; G - Main mixer; H - Controller; J, K -
Orifice plates; L - Additional mixer; M - Controller to
effect stabilization of gas pressure upstream of final
control element; N - Distributor; P, Q - Two sets of
capillary tubes "R"; R - Capillary tubes.
SEE OR SEARCH THIS CLASS, SUBCLASS:
556-556.6, for a position or extent of a motion indicator
element rigidly carried by the movable element whose position
is indicated.
625.3 for systems having a multi way valve unit where flow
is divided into parallel flow lines then recombined including
a metering feature.
886 for systems having flow control means for branched
passages including a threaded actuator.
SEE OR SEARCH CLASS:
91, Motors, Expansible Chamber Type, subclass 31 wherein the
fluid is supplied through diverse paths to a single
expansible chamber and wherein one path includes
restriction.
128, Surgery, subclass 205.24 for a respiratory means or
method having a mixing treating agent with a respiratory gas
having a valve or valve control structure.
166, Wells, subclass 91.1 for an above-ground apparatus with
flow restrictors (e.g., chokes, beans, etc.).
251, Valves and Valve Actuation, subclass 117 for a valve
with restrictor in parallel to a main valve or subclass 118
for a material guide or restrictor.
Subclass:
599.05
Having digital flow controller:
This subclass is indented under subclass 599.01. Subject
matter wherein at least one of the parallel flow paths
provide a specific flow rate controlled by a valve which is
completely open or closed (the valve itself provides no
adjustable metering).
(1) Note. The flow rate determining means can be a serial
restrictor or restricting means in the valve itself.
(2) Note. This includes a flow controller that can be
manually set to a numerical value.
SEE OR SEARCH CLASS:
91, Motors, Expansible Chamber Type, subclass 31 wherein the
fluid is supplied through diverse paths to a single
expansible chamber and wherein one path includes
restriction.
128, Surgery, subclass 205.24 for a respiratory means or
method having a mixing treating agent with a respiratory gas
having a valve or valve control structure.
166, Wells, subclass 91.1 for an above ground apparatus with
flow restrictors (e.g., chokes, beans, etc.).
251, Valves and Valve Actuation, subclass 117 for a valve
with restrictor in parallel to main valve or subclass 118 for
a material guide or restrictor.
Subclass:
599.06
Having plural branches under common control for separate
valve actuators:
This subclass is indented under subclass 599.05. Subject
matter comprising two or more unique flow restriction
passageways, a valve associated with each passageway, and a
single control for selectively opening any one of the valves
and maintaining each additional valve closed.
(1) Note. The single control can be a single actuator
physically connected to separate valves or a central control
means connected to physically independent valve actuators.
[figure] [caption]Figure 1: A typical example of the subject
matter. A - Main header; B - Supply pipe; C - Filter; D -
First riser; E - Pipe coupling; F - Meter or indicator; G -
Pipe coupling; H - Discharge pipe; J - Second riser. Note:
Main header "A" is connected to risers "D" and "J" by various
orifices and shutoff valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
636.1 for systems having selective motion for plural valve
actuator having oppositely movable cam surfaces.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, subclass 46 for a flow
regulator or baffle having variable restriction.
251, Valves and Valve Actuation, subclasses 121-122 for an
adjustable material guide or restrictor.
604, Surgery, subclass 246 means for controlling or metering
a predetermined dose or amount of treating material
introduced or removed through a conduit, holder, or
implantable reservoir inserted in a body from a body orifice,
or inserted or removed subcutaneously, other than by
diffusing through skin, for therapeutic purposes (e.g.,
medicating, irrigating, aspirating, etc.).
Subclass:
599.07
Electromagnetic or electric control (e.g., digital control,
bistable electro control, etc.):
This subclass is indented under subclass 599.06. Subject
matter wherein at least one valve is operated by
electricity.
(1) Note. The electric signals can be direct to solenoid
actuators or indirect, such as through solenoid pilot valves.
[figure] [caption]Figure 1: A typical example of the subject
matter. Valve housing formed of recessed parts "B" and "C";
B, C -Recessed parts sealed by bolts "M"; D - Electromagnets
composed of "E", "F", and "G"; E - Coil body; F - Armatures;
G - Coil windings; H - Flow channels; J - Sub-chambers; K -
Inlet; L - Outlet; M - Sealing bolts; N - Planner plates for
passages "P"; P - Passages; Q - Tubular stems; R - Spaced
recessed circular plates.
SEE OR SEARCH THIS CLASS, SUBCLASS:
601.14 for systems dividing into parallel flow lines then
recombining having an electrical valve actuator.
883 for systems having a single inlet and flow control means
for branched passages having multiple distinctly valved
outlets.
884 for systems having a flow control means for branched
passages in a sectional block structure.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 30.01-30.05 for
a fluid actuated or retarded valve controlled by an
electrically actuated pilot valve, subclass 65 for a
permanent or constantly energized magnet actuator, subclass
129.05 for an electrically actuated valve having means to
produce digital pulses, or subclasses 129.15-129.22 for an
electrically actuated valve including a solenoid.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets, subclass 234 for a magneto mechanical
motive device (e.g., electromagnet having an armature, etc.)
having a permanent magnet, a polarized electromagnet, and a
reversible magnetic flux-type movement (e.g., bistable type,
etc.).
Subclass:
599.08
With multi way valve having serial valve in at least one
branch:
This subclass is indented under subclass 599.01. Subject
matter comprising a single flow regulating or controlling
element at a point where plural lines divide or recombine and
further includes additional flow regulating or controlling
elements in at least one of the parallel flow paths.
[figure] [caption]Figure 1: A typical example of the subject
matter. A - Spool element; B, C - Lands slidably mounted in
"D" of housing "E"; F - Inlet passage with branches "T" and
"S"; G - Outlet passage; H, J - Parallet main orifices; K -
Variable secondary orifice in series with "L"; L - Passage; M
- Serial valve with lands "N" and "P"; N, P - Lands; Q, R -
Valve bores; S - Branch leading to valve bore "D".
SEE OR SEARCH THIS CLASS, SUBCLASS:
613-614.21, for system shaving a flow path having serial
valves or closures.
625.12-625.16, for a multi way valve with sequentially
progressive opening or closing of plural lines.
625.28-625.39, for systems dividing into parallel flow lines
then recombining having a multi way valve unit.
SEE OR SEARCH CLASS:
91, Motors, Expansible Chamber Type, subclasses 32-33 for
fluid supplied through diverse paths to a single expansible
chamber where activation of one path disables a second path.
Subclass:
599.09
Fluid pressure regulator in at least one branch:
This subclass is indented under subclass 599.01. Subject
matter wherein at least one flow passageway includes a biased
open valve that is responsive to its outlet pressure in a
manner that tends to maintain a constant outlet pressure.
[figure] [caption]Figure 1: A typical example of the subject
matter. A - Valve casing; B - Inlet; C - Outlet; D - Passage
(communicates with "B" and "C"; E - Valve body; F -Pressure
governor valve; G - Control rod; H - Valve seat; J - Piston;
K - Chamber for sliding "J"; L - Spring (acts on valve body
"E" through piston "J" and rod "G"; N - Pressure governing
screw; P - Flow control valve; Q - Valve body; R - Valve
seat; S - Pressure source; T - Direction switch valve; V -
Check valve; W - Throttle valve with pressure compensator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.04-315.05, for a fluid handling system with repair,
tapping, assembly, or disassembly means for a pressure
regulator, pressure-regulating valve, or reducing valve.
488-492.5, for a line condition change responsive fluid
pressure type pilot or servo controlled valves.
505-505.47, for a line condition change responsive valve
having a separate connected fluid reactor surface with an
opening bias (e.g., pressure regulator, etc.).
510 for a line condition change responsive valves with
separate connected fluid reactor surface valve seating in
direction of flow having a flexible diaphragm or bellows
reactor.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclass 285 for a flow of one heat
exchange material controlled by the pressure of another,
subclass 286 for flow of one heat exchange material
controlled by its own pressure, subclass 299 for flow of one
heat exchange material controlled by temperature of another,
or subclass 300 for flow of one heat exchange material
controlled by its own temperature.
237, Heating Systems, subclass 65 for a water heating system
having a pressure regulator.
Subclass:
599.11
Flow passage with bypass connection:
This subclass is indented under subclass 599.01. Subject
matter comprising a pipe or conduit, in addition to those for
inlet and outlet, for diverting the flow to a device other
than a valve and a connection for returning the flow to the
main pipe or conduit. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Support base; B - Chamber;
C - Nipple carries valve housing "D"; D - Housing for valve
mechanism; E - Hollow stem connected to chamber "F"; F -
Cleaning agent chamber (other device) with pervious
receptacle "T"; G - Fluid inlet; H - Nozzle with discharge
orifice "J"; J - Discharge orifice; K - Mixing chamber; L -
Ball check valve; M - Container outlet; N - Valve controlled
conduit; P - Dispensing nozzle; Q - Flexible hose; R - Nozzle
"P" perforations; S - Manually operated restrictor; T -
Pervious receptacle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
565.01-565.36, for a fluid system having a pump.
625.28-625.39, for systems having multi way valve unit
having divided parallel flow paths with recombining.
SEE OR SEARCH CLASS:
73, Measuring and Testing, subclass 204.21 for a thermal
type volume or rate of flow measuring with fluid flow
deflector or restrictor (e.g., baffle, constriction, etc.).
138, Pipes and Tubular Conduits, subclasses 40-46 for flow
regulators or baffles with restrictors.
165, Heat Exchange, subclass 103 for an adjuster for a
branched flow for heat or exchange material having a bypass
of heating or cooling means.
210, Liquid Purification or Separation, subclass 434 for
divided filtered and unfiltered liquid passages including
recombining.
Subclass:
599.12
Including mixing feature:
This subclass is indented under subclass 599.11. Subject
matter wherein at least one branch includes a device or
arrangement for adding another fluid to the branch fluid.
[figure] [caption]Figure 1: A typical example of the subject
matter. The fluid flows from right to left through main
conduit "A" and out of a nozzle "B". A by-pass conduit "D"
is connected to inlet "C" and the main conduit "A". A
chemical mixture "E" is disposed in the by-pass conduit "D".
A conduit "F" is connected between mixing solution tank "G"
and the mixture "E". "H" (a power mixture) together with the
control valve "J" further regulates amount of liquid
by-passed.
Subclass:
599.13
Including flowmeter:
This subclass is indented under subclass 599.11. Subject
matter wherein at least one branch includes an instrument for
measuring the rate of fluid passing through the branch.
[figure] [caption]Figure 1: A typical example of the subject
matter. A - Manifold; B - Inlet; C - Outlet; D - Gas meter; E
- Junction stop cocks; F - Stop cock (by-pass); G - To gas
service pipe; H - Gas by-pass junction. Note: The gas by-pass
junction "H" fitted with a stop cock "F" interconnects with
manifold "A" and this, together with the junction stop cocks
"E", enables the meter to be by-passed.
Subclass:
599.14
Including cleaning, treating, or heat transfer feature:
This subclass is indented under subclass 599.11. Subject
matter comprising a porous article or mass that serves as a
medium for separating from a fluid passed through it, matter
held in suspension, dissolved impurities or coloring matter,
or means for subjecting the fluid to an agent or process, or
means for moving energy in transit due to a temperature
difference between the source and the sink. [figure]
[caption]Figure 1: A typical example of the subject matter.
CLEANING DEVICE. A - Strainer body portion; B - Fluid inlet;
C - Connection flanges; D - Strainer cartridges; E -
Passageway connects "F" with inlet "B"; F - Upper chamber; G
- Plug valve (controls fluid to strainer); H - Plug valve
lateral passageway; J - Upper support yoke; K - Lower support
yoke. [figure] [caption]Figure 2: A typical example of the
subject matter. HEAT TRANSFER DEVICE. A - Main conduit; B -
Radiator (heat transfer device); C - Inlet for radiator; D -
Outlet for radiator; E - Control valve; F - Electromagnetic
control device; G - Thermostat.
SEE OR SEARCH THIS CLASS, SUBCLASS:
334-341, for systems with heating or cooling of the system.
544-550, for systems with means for separating solid
material from the fluid.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, subclasses 323.1-347
for a filter or subclass 424 for a multi way valve flow that
selectively directs flow relative to the filter for the
material being treated.
237, Heating Systems, subclass 12.3 for a vehicle heat and
power plant.
Subclass:
599.15
Water treatment feature:
This subclass is indented under subclass 599.14. Subject
matter comprising means for subjecting water supplied for
commercial and domestic use to the action of an agent or
process to make it safely potable. [figure] [caption]Figure
1: A typical example of the subject matter. A - Water under
pressure; B - Treatment device inlet tubing; C - Inlet to
treatment device; D - Treatment device (holds chemical); E -
Flow rate valve; F - Inlet shutoff valve; G - Treatment
device outlet tubing; H - Outlet from treatment device; J -
Outlet shutoff valve.
SEE OR SEARCH CLASS:
122, Liquid Heaters and Vaporizers, subclasses 379-405 for
cleaning.
210, Liquid Purification and Separation, subclasses
198.1-221.2 with means to add treating material, or
subclass 444 for a system with a filter within a flow line
and the filter being suspended from a head of a casing.
422, Chemical Apparatus and Process Disinfecting,
Deodorizing, Preserving, or Sterilizing, subclass 256 for a
physical type apparatus for liquid-liquid contact means for
separating or dissolving a material constituent.
Subclass:
599.16
Second valve assembly carried by first valve head:
This subclass is indented under subclass 599.01. Subject
matter wherein a valve head carries the head and seat of
another valve. [figure] [caption]Figure 1: A typical example
of the subject matter. A - Fluid inlet; B - Fluid outlet; C -
Movable accumulator rod; D - Yieldable foot engages lever
"E"; E - Lever; F - Valve lever pivot; G - Accumulator
control valve; H - Control valve pivot; J, K - Control valve
ports; L - Control valve hollow interior; M - Self contained
check valve (built within valve "G"); N - Spring seated upon
plug "Q"; P - Series of ports in check valve; Q - Plug; R -
Packing gland.
SEE OR SEARCH THIS CLASS, SUBCLASS:
493.1-493.6, for a line condition change responsive
bi-directional flow valves where one head and seat carried by
head of another.
512.2 for plural direct response valves (i.e., check valves)
where one valve carries the head and seat for the second
valve.
Subclass:
599.17
With rotary plug having variable restrictor:
This subclass is indented under subclass 599.16. Subject
matter wherein the first valve head revolves about its own
axis and includes means to adjust parallel flow path.
[figure] [caption]Figure 1: A typical example of the subject
matter. A - First valve body; B - Tapered valve chamber; C -
Tapered plug valve element; D - Hollow valved stem; E - Valve
cap; F - Coiled spring acts upon the valve member to keep it
seated; G, H - Threaded valve body extension with inlet
passage; J, K - Thread valved body extension with outlet
passage; L, M, N, - Second orifice valve assembly; P - Axial
passage in plug element to provide flow to "K"; Q - Axial
passage in registry with "H"; R, S - Variable restrictor.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 117 for a
restrictor in parallel to a main valve or subclasses 118-127
for a material guide or restrictor.
Subclass:
599.18
Carried valve is direct response valve (e.g., check valve,
etc.):
This subclass is indented under subclass 599.16. Subject
matter wherein the other flow regulating means comprises a
device which automatically limits the flow to a single
direction and is sensitive to the pressure of the fluid. d
(1) d ( ) Note. Since the check valve has no other
actuator, its movement from a normal, neutral, or biased
position is caused solely by a change in the fluid flow or
pressure in the line, and the valve returns to its original
position when the original condition is restored. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Valve body; B - Valve sleeve; C - Lock nut; D - Passageway;
E - Annular valve seat; F - Check valve element held against
by "G"; H - Boss; J - Spring retainer; K - Valve port
(upstream side); L - Valve ports (downstream side); M -
Annular passageway cocentric with "D"; N, P - Shoulders serve
as cooperating valve elements.
SEE OR SEARCH THIS CLASS, SUBCLASS:
511-543.23, for a direct response valve (i.e., check valve
type).
SEE OR SEARCH CLASS:
222, Dispensing, subclasses 402.1-402.25 for a fluid
pressure type discharge assistant wherein the valve is
actuated by a nozzle or through an outlet of the valve.
417, Pumps, subclass 296 for a condition responsive pumped
fluid control where the bypass or relief valve part is
carried by or carries a distributor part.
Subclass:
600
This subclass is indented under subclass 599.01. Subject
matter having a dividing and obstructing member in the flow
path to cause and/or control foaming of the fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
896 for foam controlling devices having plural inlet
passages.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, 40 for flow restrictors in
pipes.
239, Fluid Sprinkling, Spraying, and Diffusing, 463 and 552
for sprayer devices having an obstructing element inserted in
the fluid line for the purpose of inducing or minimizing
rotation of the fluid.
251, Valves and Valve Actuation, 118 for valved flow
passages having a restrictor in the flow passage.
Subclass:
601.01
With common operator:
This subclass is indented under subclass 599.01. Subject
matter having at least one valve in each parallel flow path
and wherein both valves are controlled by a single operating
means. d (1) d ( ) Note. The common operator can be a
single actuator physically connected to separate valves or
central control means connected to physically independent
valve actuators. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Housing; B - Yoke; C -
Input chamber connected to "H" by passages "M", "Q", and "S";
D - Filter; E - Cylinder bore for piston "F"; F - Piston; G -
Groove for "O"-ring "J"; H - Expansible chamber; J -
Resilient "O"-ring for sealing chamber "C"; K - Piston rod; L
- Spring disposed around "F"; M - First passage; N - Valve; P
- Valve actuator; Q - Second passage; R - Spring controlled
valve; S - Third passage; T, V - Valves with actuators "X"
and "Y"; W - Hand Wheel; X, Y - Valve actuators; Z - Wall for
locating "X" and "Y"; AA - Common valve operator. Note (1):
Valve "V" is behind valve "T". Note (2): Common valve
operator "AA" selectively operates actuators "X" and "Y".
SEE OR SEARCH THIS CLASS, SUBCLASS:
599.06-599.07, for systems having separately actuated valves
operated in common by a digital flow controller and their
flow lines.
595 for systems having plurally noncommunicating flow paths
having a common valve operator.
607 for systems having a multiple inlet having a flow
control valve in each inlet having a common valve operator.
614.11-614.15, for systems having a flow path having serial
valves or closures and a common actuator.
627 for systems having a sequential distributor or collector
type.
627.5 for systems having a sequentially closing and opening
alternately seating flow controllers.
628-630.22, for systems having a sequentially progressive
opening or closing of plural valves.
636 for systems having a selective motion for a plural valve
actuator.
862-871, for systems having flow control means for branched
passages including a common valve operator.
SEE OR SEARCH CLASS:
236, Automatic Temperature and Humidity Regulation, subclass
80 for a fluid-operated motor controlled by a relay
including a shunt for plural pilots having a single
actuator.
431, Combustion, subclass 90 for a timer, programmer,
retarder, or condition responsive control by condition of
burner feed or feed means where a sensor of one feed controls
another feed.
Subclass:
601.02
Balanced valve:
This subclass is indented under subclass 601.01. Subject
matter wherein the flow regulating means in each branch is so
related to the fluid controlled that the pressure bias
imparted by the line pressure is in equilibrium with respect
to opposing surfaces of the regulating means. [figure]
[caption]Figure 1: A typical example of the subject matter.
In operation, fluid is permitted to pass through the valve by
operating lever "H" to rock the shaft "D", thereby lifting
each valve n n' simultaneously from its seat allowing the
fluid to flow through passages o o'; since the fluid pressure
acts on one valve to force it against its seat and to the
other valve to force it from its seat, valves are balanced
between opposing pressures.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 281-283 for a
balanced valve.
Subclass:
601.03
Single resilient member actuates or forms plural passages:
This subclass is indented under subclass 601.01. Subject
matter wherein a device consisting of an element capable of
returning freely to a previous position, shape, or condition
operates valves in response to the control pressure in
parallel flow paths or the element is a valve means for
parallel flow paths. [figure] [caption]Figure 1: A typical
example of the subject matter. IN GENERAL. A - First conduit;
B - Second conduit; C - Third conduit; D - Clamping
mechanism; E - Interior passage whose wall defines a
plurality of serrations. [figure] [caption]Figures 2, 3, and
4: Typical examples of the subject matter. F - "V"-shaped
grooves; G - Projections; H - Flat surfaces (wall of "E" (see
Figure 1) defines serrations consisting of "V"-shaped grooves
("F") having projections ("G") and inner flat surfaces
("H")); J - Clamp body; K - Bottom wall; L - Shaft; M - Cam;
N - Passages; P - Passages (Passages "N" and "P" formed due
to clamping action until the fluid is completely stopped); Q
- Passages formed due to clamping action for flow of fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
512.15 for plural direct response valves provided by an
integral resilient member characterized by dividing and
recombining in a single flow path.
SEE OR SEARCH CLASS:
91, Motors, Expansible Chambers Type, subclasses 514-516
wherein the pressure responsive valve divides motive fluid
between motors.
251, Valves and Valve Actuation, subclasses 4-10 for tube
compressors.
Subclass:
601.04
Valves deform to close passage:
This subclass is indented under subclass 601.01. Subject
matter wherein the flow regulating means with the help of the
increased external pressure alters the shape of the
collapsible and expansible flow paths or conduits by varying
degrees to complete closure. [figure] [caption]Figure 1: A
typical example of the subject matter. A - Valve housing
(exterior); B, C - Pair of flanged ends; D - Fluid line inlet
end; E, F - Fluid line flanged ends; G - Plurality of fluid
tight tubes; H - tube sheets; J - Space for control fluid; K
- Control fluid inlet; L - Valve with a pump; M - Control
fluid line; N- Tube wall (uniform); P - Elastomer. [figure]
[caption]Figures 2, 3a, 3b, and 3c: Typical examples of the
subject matter. G - Plurality of fluid type tubes; N - Tube
wall (uniform); P - Elastomer.
SEE OR SEARCH THIS CLASS, SUBCLASS:
489-489.5, for a line condition responsive pilot or servo
controlled valve choked or throttled fluid pressure type.
SEE OR SEARCH CLASS:
160, Flexible or Portable Closure, Partition, or Panel,
subclasses 220-221 for movable plural strips, slats, or
panels interconnected for plural relative motions.
251, Valves and Valve Actuation, subclass 5 for fluid
pressure actuated tube compressor or subclass 212 for
relatively movable valve elements forming single port closure
(e.g., an iris diaphragm, etc.).
454, Ventilation, subclasses 333-336 for an inlet airway
having an adjustable valve or damper or subclasses 358-364
for an outlet airway having a readily movable air regulating
louver, damper, or cover.
Subclass:
601.05
Rotary valve:
This subclass is indented under subclass 601.01. Subject
matter wherein at least one flow regulating means includes
the head which turns or revolves about its axis to open and
close the regulating means. d (1) d ( ) Note. Valves
having rotary actuator motion to reciprocate a valve or
compound rotary and reciprocal motions (helical or screw
thread) are found in other appropriate subclasses under
601.01. [figure] [caption]Figure 1: A typical example of the
subject matter. A - Measuring vessel; B, C - Opposite glass
walls; D - Vertical partition forming chambers "E" and "F";
G - Cock; H - Tapping-cock; M - Handle which operates both
"G" and "H". Note: Handle "M" is fixed to the key "I" and
passes through slot "K" in the key "L".
SEE OR SEARCH THIS CLASS, SUBCLASS:
625.31 for systems characterized by dividing into parallel
flow paths with recombining having a rotary multi way valve.
865 for flow control means for branched passages with a gear
operated common valve operator that may be rotary.
Subclass:
601.06
Including rigid plate with flexible or resilient seal:
This subclass is indented under subclass 601.05. Subject
matter wherein the valve head is made of a substantially flat
plate and having an element which is intended to stop leakage
between the plate and an adjacent plate or the housing of the
valve and wherein the element comprises material that
deflects under pressure or under force exerted during the
operation of the valve, but returns to its original state
when the pressure or force is removed. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Damper blades; B - Linkage mechanism to operate "A"; C -
Seals.
Subclass:
601.07
Axes of rotation of valves intersect at point:
This subclass is indented under subclass 601.05. Subject
matter wherein a straight line about which each flow
regulating means of a plurality of flow means is conceived to
revolve, cut into one another to share a narrow, localized
spot. [figure] [caption]Figure 1: A typical example of the
subject matter. A - Valve housing; B - Mounting holes; C -
Outer peripheral surface; D - Inner peripheral surface; E, F,
G, H - Rotatable shims, each occupies a space between
corresponding vanes J, K, L, and M; J, K, L, M - Connected
vanes; N, P - Vane tips rotate within hub "Q"; Q - Hub; R -
Bracket carrying actuator "S"; S - Actuator; T - Plunger; V,
W - Orifices for fluid inputs to control "T"; X - Shaft
controlled or turned by "T"; Y - Crank. In operation, servo
controller supplies fluid to the orifices "V" and "W" so that
piston within the actuator "S" is moved back and forth,
controlling plunger "T" to obtain desired valve opening.
SEE OR SEARCH CLASS:
60, Power Plants, subclasses 226.1-226.3 for interrelated
reaction motors where air and diverse fluid discharge from
separate discharge outlets (e.g., fan jet, etc.).
415, Rotary Kinetic Fluid Motors or Pumps, subclasses 77-79
for an axial flow runner with blades extending radially
inward and outward from a common annulus or subclasses
159-166 for a selectively adjustable vane or working fluid
control means upstream of runner having plural and arcuately
or circularly arranged around a runner axis.
431, Combustion, subclasses 182-184 for a plural fuel
disperser means extending to a common wall opening of a
furnace and a duct with air whirling means surrounds
disperser.
454, Ventilation, subclass 308 for an inlet airway including
a specific air distributor (e.g., register, etc.) having
vanes or elongated output slots extending radially.
Subclass:
601.08
Axes of rotation parallel:
This subclass is indented under subclass 601.05. Subject
matter wherein a line about which each flow regulating means
of a plurality of flow means is conceived to revolve, extends
in the same direction, and is equidistant everywhere.
[figure] [caption]Figure 1: A typical example of the subject
matter. A - Air flow regulating assembly for a burner; B -
Front main plate; C - Circular center plate; D - Circular
rear plate; E - Spacer rods joining all plates; F - Control
rods; G - Secondary air vanes; H - Observation tubes; J -
Tube cover; K - Flow control mechanism consisting of
operating ring "L", central rollers "M", actuating arm "N",
link "P", rack segment "Q", pinion gear "R", and crank handle
"S".
SEE OR SEARCH CLASS:
165, Heat Exchange, subclass 101 for an adjuster for heat or
exchange material branched flow that controls flow through
parallel heating or cooling means.
239, Fluid Sprinkling, Spraying and Diffusing, subclass 590.5
for a rigid fluid confining distributor having interior
filter or guide and plural parallel fluid directing means.
Subclass:
601.09
Adjacent plate valves always parallel:
This subclass is indented under subclass 601.08. Subject
matter wherein the flow regulating means comprising a
substantially flat sheet of uniform thickness and the one
immediately preceding or following are equidistant from each
other. [figure] [caption]Figure 1: A typical example of the
subject matter. A, B - Lower and upper frame members; C -
Lateral members; D - Damper blades; E - Blade shafts; F -
Support member to actuate blades; G, H, J, K, L - Bell crank
levers, operating links, and tie link mechanism form a
parallelogram; M - Air cylinder; N - Coupling rod connected
to bell crank levers.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, subclasses 73.1-123 for
closures interconnected for concurrent movement.
454, Ventilation, subclasses 319-320 for an inlet airway
having a louvered air distributor including moveable plural
vanes pivoting about individual axes or subclasses 335-336
for an adjustable valve (e.g., damper, etc.) having plural
blades pivoting along parallel axes.
Subclass:
601.11
Adjacent plate valves counter rotate:
This subclass is indented under subclass 601.08. Subject
matter wherein the flow regulating means comprising a
substantially flat sheet of uniform thickness and one
immediately preceding or following revolve in opposite
direction to each other or move toward and away from each
other. [figure] [caption]Figure 1: A typical example of the
subject matter. A - Damper assembly; B- Socket swivel unit;
C, D - Flanges; E - Cross bar; F - Shank; G - Actuating rod
element; H - Damper frame; J, K, L - Damper blades; M -
Bearing pins; P, Q, R - Lateral channels; S - Bearing strap;
T - Connecting rod; V - Trunion support; W - Rotatable
trunion; X - Blade actuating means.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, subclasses 116-123 for
closures interconnected for concurrent movement having
opposed similar movement.
138, Pipes and Tubular Products, subclass 46 for flow
regulators or baffles having a variable restriction.
454, Ventilation, subclass 336 having an inlet airway with
adjustable blades pivoting along parallel axes where adjacent
blades pivot in opposing directions.
Subclass:
601.12
Mechanical movement between actuator and non-rotary valve:
This subclass is indented under subclass 601.01. Subject
matter wherein the significance is attributed to moving parts
of the mechanism that transmit definite motion to the
non-revolving component of the flow regulating means or to
the regulating means itself, such that the motion provided at
the input (actuator) end of the mechanism is different in
direction or distance traveled that the motion at the output
(valve) end of the mechanism. [figure] [caption]Figure 1: A
typical example of the subject matter. A - Controller casing;
B - Steam inlet chamber; C - Steam pipe; D - Exhaust chamber;
E - Steam outlet; G - Non-rotary poppet valve; H - Lifting
stem; J - Valve spring; K - Washer; L - Non-rotary poppet
valve; M - Valve stem; N - Valve spring; P - Washer; Q - Cam
shaft; R, S - Spindles afford bearing for valve levers; T -
Valve lever; V - Lever support cam; W - Valve lever; X -
Rotary cam.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.35-315.4, for a particular mechanical actuator of a valve
with repair, tapping, assembly, or disassembly means.
434-451, for a float arm operated valve.
628-630.22, for systems having sequentially progressive
opening or closing of plural valves.
SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, subclasses 90.1-90.67 for
various poppet valve operating mechanisms.
236, Automatic Temperature and Humidity Regulation, subclass
1 for miscellaneous multistage multiple valve staging valve
controls that may include mechanical actuating means or for
miscellaneous multistage single valve staging valve controls
that may include mechanical actuating means.
251, Valves and Valve Actuation, subclasses 213-280 for a
mechanical movement actuator.
Subclass:
601.13
Fluid actuated or retarded:
This subclass is indented under subclass 599.01. Subject
matter wherein the significance is attributed to a valve
device in which the opening or closing movement of the valve
is produced or modified by the relative force of gas, liquid,
or a mixture of a solid and liquid in a flowable form acting
against a portion of the valve actuating means. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Supply hopper; B - Resistant coating; C, D - Flanges; E -
Valve body; F - Air-vacuum line; G - Compression fitting; H -
"T" fitting; J - Tube; K - Tube plug; L - Perforations; M -
Close fitting rubber tube; N - Flexible coupling; P - Flange;
R - Pressure vessel; S - Opening in vessel; T - Three-way
valve; V - Line through which vacuum is pulled; W - Air
supply line. In operation, air pressure is supplied through
"F", "H", "J", and "L", causing the rubber tube "M" to expand
into the position shown by dotted lines, thus closing the
opening in "E" and cutting off flow through "A". When "T" is
opened, vacuum is pulled through "V", quickly collapsing the
tube "M" against "J".
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.19 for a process of assembling, disassembling, or
repairing a fluid actuated or retarded valve.
SEE OR SEARCH CLASS:
91, Motors, Expansible Chambers Type, subclasses 418-470
for a motive fluid valve.
222, Dispensing, subclasses 481-489 for plural openings or
discharge guides having flow controllers or closures.
251, Valves and Valve Actuation, subclasses 12-63.6 for a
fluid actuated or retarded valve actuating means or subclass
175 for means to increase head and seat contact by fluid
pressure.
267, Spring Devices, subclasses 64.16-64.21 for a vehicle
spring having a compressible fluid with a retarder leveling
device.
Subclass:
601.14
Electrical actuator:
This subclass is indented under subclass 599.01. Subject
matter wherein the position of the valve is moved by a
mechanism powered by electricity, such as a solenoid, motor,
or piezoelectric actuator. [figure] [caption]Figure 1: A
typical example of the subject matter. A - Fuel tank; B -
Inlet; C - "T" coupling; D - Tank drain; F - Valve stem; G -
Outlet; H - Valve seat; J - Ball check valve; K -
Electromagnetic coil; L, N - Conductors; M - Switch; P -
Power source.
SEE OR SEARCH THIS CLASS, SUBCLASS:
66 for a thermoelectric combustion failure responsive fuel
safety cut off for burners.
599.07 for systems having separately actuated valves
operated in common by an electrically actuated digital flow
controller and their flow lines.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 30.01-30.05 for
a fluid actuated or retarded valve controlled by an
electrically actuated pilot valve or subclasses 129.15-129.22
for an electrically actuated valve including a solenoid.
Subclass:
601.15
Mechanical movement between actuator and valve:
This subclass is indented under subclass 599.01. Subject
matter wherein the significance is attributed to moving parts
of the mechanism that transmit definite motion to the
component of the flow regulating means or to the flow
regulating means itself, such that the motion provided at the
input (actuator) end of the mechanism is different in
direction or distance traveled than the motion at the output
(valve) end of the mechanism. [figure] [caption]Figure 1: A
typical example of the subject matter. RESERVE VALVE FOR FUEL
TANK: A - Cylindrical casting; B - Screw threads matches
internal threads of "C"; C - Supply tank; D - Central
passage; E - Port; F - Tapered valve to close port "E"; G -
Leaf spring; H - Leaf spring free end engaged to screw
threaded rod "J"; J - Screw threaded rod; K - Packing gland;
L - Packing screw; M - Packing material; N - Internal screw
head of lower flow passage. In operation, port "E" is opened
by mechanical actuator (screw threaded rod "J"), thereby
allowing the fuel to feed from tank "C" through port "E" to
inlet passage "D".
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.35-315.4, for a particular mechanical actuator of a
valve with repair, tapping, assembly, or disassembly means.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 213-280 for a
mechanical movement actuator.
Subclass:
601.16
Rotary valve:
This subclass is indented under subclass 599.01. Subject
matter wherein at least one flow path has flow regulating
means which turns on or revolves about its axis that passes
through the regulating means itself. [figure] [caption]Figure
1: A typical example of the subject matter. A - Rotary
control valve assembly; B - First body member; C - Second
body members; D - Axially movable valve; E - Inlet passage; F
- Outlet passage; G - Rotary flow-through valve; H - Cross
slot in valve "G" to align with "F"; J, K - Rotary valve seal
rings; L - Set screw (loosened when valve "G" is rotatably
adjusted). In operation, valve "G" is rotatable whereby the
position of cross slot "H" relative to "F" is selectively
adjusted between valve-closed position and valve-open
position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
887 for systems having a flow control means for branched
passages containing a rotary valve.
901 for biased rotary ball valves with operators.
905 for rotary valves for multiple gas burners.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 304-317.01 for
a rotary valve.
Subclass:
601.17
Butterfly valve:
This subclass is indented under subclass 601.16. Rotary
valve wherein the movable flow control member has a disk or
semicircular clappers shape that rotate centrally and
perpendicularly to open or close the flow passage to regulate
the flow of fluid. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Butterfly valve; B - Valve
housing; C - Flow passage; D - Valve disc; E - Disc support
shaft; F - Resilient seal; G - Flange (to secure pipe
sections); H - Distribution ring; J - Jet orifices; K -
Upstream radial port; L - Downstream radial port; M - Fluid
conduit; N - Valve to control fluid movement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.25 for a process of assembling, disassembling, or
repairing a butterfly valve.
315.22-315.24, for a butterfly valve with repair, assembly,
or tapping means.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, subclasses 74.1-92.1 for
a louver-type closure (e.g., slats, panels, etc.).
123, Internal Combustion Engines, subclass 337 for a
specific throttle valve structure.
220, Receptacles, subclasses 810-849 for a closure mounted
for swinging (e.g., hinged, etc.).
251, Valves and Valve Actuation, subclasses 305-308 for a
butterfly valve.
454, Ventilation, subclasses 333-336 for an adjustable
damper type valve.
Subclass:
601.18
Having guide or restrictor:
This subclass is indented under subclass 599.01. Subject
matter wherein at least one flow path has means to change
flow direction or impede it without having the intention of
blocking it completely during normal use. [figure]
[caption]Figure 1: A typical example of the subject matter. A
- Control valve; C - Inlet (discharge from boiler); D - Steam
trap; E, F - Branch pipes; G, H - Contracted or constricted
passages. Note: To insure the perfect operation of the steam
trap, the passages "G" and "H" in the branch pipes "E" and
"F" are contracted or constricted to such an extent in their
diameter as to prevent the escape of steam with the water.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 117 for a
restrictor in parallel to a main valve or subclasses 118-127
for a material guide or restrictor.
Subclass:
601.19
Manually variable:
This subclass is indented under subclass 601.18. Subject
matter wherein the guide or restrictor can be adjusted by a
human being. [figure] [caption]Figure 1: A typical example of
the subject matter. A - Coupling device; B - Inlet; C -
Outlet; D - Body of the device; E - Annular closing head; F -
Removable adapter plate; G - Tubular insert; H - Dovel pins;
J, K, L, M - Manually adjustable restrictor assembly; N -
Restrictor valve; P - Inlet chamber; Q - Outlet chamber. In
operation, fluid flowing into the device "A" by way of the
inlet pipe "B" is trapped in the chamber "P" and its passage
into the outlet chamber "Q" is regulated by the restrictor
"N".
SEE OR SEARCH CLASS:
251, Valves and valve actuation, subclasses 121-122 for a
movable or resilient adjustable guide or restrictor.
Subclass:
601.2
Having direct response valve (e.g., check valve, etc.):
This subclass is indented under subclass 599.01. Subject
matter wherein at least one flow path has a flow regulating
means comprising a device which automatically limits the
fluid flow to a single direction and is sensitive to the
pressure of the fluid. [figure] [caption]Figure 1: A typical
example of the subject matter. A - Direct response valve; B -
Valve housing; C - Orifice member; D - Flat upstream face of
"C"; E - Orifice regulating spring; F - Apex coil; G - Base
coil; H - Inlet port; J - Outlet port; K - Plurality of
equally spaced orifices. In operation, to maintain uniform
flow through valve "A", orifices "K" are closed and opened
with increases and decreases in the pressure differential
between "H" and "J". This control is provided by closure of
"F" against upstream face "D" of the plate "C" with changes
in the pressure differential.
SEE OR SEARCH THIS CLASS, SUBCLASS:
526 for a line condition direct response vacuum relief type
valve (i.e., check valve).
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclasses 336-338 for a
biased valve.
Subclass:
601.21
With reverse flow direction:
This subclass is indented under subclass 601.2. Subject
matter wherein the direct response valve is provided with
means causing the stream of fluid to turn completely in
opposite path.
(1) Note. The term "reversible" refers, in this case, to a
valve whose function of permitting the fluid to pass through
it at a governed velocity in but one direction can be
reversed in either direction at the will of the operator,
without dismemberment of the valve. [figure] [caption]Figure
1: A typical example of the subject matter. A - Valve body; B
- Body cover; C, C' - opposed valve seats; D, D' -Oscillating
cross shafts; E, E' - Valves; G, G' - Levers; H - Adjusting
rod flexibly joined to G, G'; I, I' - Adjustable collars; J,
J' -Set collars connecting G, G'; K - Spring connecting set
collars; L - Bypass controlled by valve "M"; M - Auxiliary
valve.
SEE OR SEARCH CLASS:
137, Fluid Handling, subclasses 15.08-15.17 for a process
of securing, replacing, or servicing a pipe, joint, valve, or
tank, or subclasses 315.01-329.4 for a fluid handling system
with repair, tapping, assembly, or disassembly means.
Subclass:
602
This subclass is indented under subclass 561. Systems
including a fluent material branched flow line having two or
more inlets or admission passages connected to a single
outlet or exhaust passage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
88 and 111+, for systems which include a self proportioning
or correlating feature and have plural inlets and a single
outlet.
155 for gas lift devices for liquid columns which include a
gas injecting means.
247.27 for liquid seal devices with plural inlets.
263 and 266+, for plural tanks having a common outflow
path.
564.5 for a follower type feeder responsive to main line
flow.
597 for multiple inlet systems with multiple outlets.
625.4 for valve units performing this function.
SEE OR SEARCH CLASS:
48, Gas: Heating and Illuminating, 180 for a device mixing
gases, the mixed product being a heating or illuminating
gas.
222, Dispensing, 145.1 for dispensers comprising plural
sources having a common discharge.
239, Fluid Sprinkling, Spraying, and Diffusing, appropriate
subclasses under 303, 310, 340, 398, and 486 for spray
devices having plural fluid inlets, where the mixing is
effected prior to discharge through a single outlet nozzle
passage.
261, Gas and Liquid Contact Apparatus, appropriate subclass
for apparatus specially adapted to produce an intimate
contact between gases and liquids to exchange properties or
mutually modify conditions.
431, Combustion, 159 for a furnace comprising a combustion
chamber element with structure feeding fuel and air to form a
shaped, distributed or directed flame within the chamber, and
subclass 354 for a fuel and air mixer with an immediately
associate unshaped flame holding fuel discharge structure.
Subclass:
603
This subclass is indented under subclass 602. Systems
comprising means at each inlet for attachment to a faucet,
whereby the efflux from the respective faucets, usually hot
and cold water, may be mixed prior to discharge from the
single outlet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
337 for hot and cold water systems having a connection from
the hot to the cold channel, usually for antifreeze
purposes.
342 for mixing valves with soap dish, etc., supports.
562 for systems comprising a receiving means, usually a dish
washer or clothes washer, to be filled from a sink faucet
arrangement and emptied into the sink.
599.03-599.04, for systems having inlets where one or more
flow lines divide into parallel flow lines then recombine.
Subclass:
605
This subclass is indented under subclass 602. Systems having
means to stop or to regulate the flow of fluent material in
one or more branches.
SEE OR SEARCH THIS CLASS, SUBCLASS:
631 for valves of the cyclical type and see the search notes
to subclass 631.
Subclass:
606
This subclass is indented under subclass 605. Systems in
which the flow control means comprises one or more valves in
each inlet branch.
(1) Note. Mixing faucets for hot and cold water, which do
not claim additional means to promote mixing, are classified
herein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
603 for valve devices of the plural inflow-single outflow
type attachable to conventional hot and cold water faucets,
i.e., mixing attachments for faucets.
888 for valve devices comprising means for promoting mixing
of the plural inflows. See (1) Note.
896 for valve devices comprising means for promoting mixing
of the plural inflows.
Subclass:
607
This subclass is indented under subclass 606. Systems in
which at least one valve in each inlet branch is connected to
a single operating means so as to be operated thereby.
SEE OR SEARCH THIS CLASS, SUBCLASS:
631 for cyclical valves and actuators, and see the search
notes thereto.
862 for distribution systems plural branches and plural
valves having a single actuator, and see the search notes
thereto.
Subclass:
613
This subclass is indented under subclass 561. Systems
comprising a single flow path for a fluent material having
two or more spaced valves, flow controllers or closures
therein through which the fluent material passes serially.
(1) Note. A tank with claimed inlet and outlet, each with
valve or closure, is here.
(2) Note. See the class definition, Lines With Other
Classes and Within this Class, (2) Plural Valves, and
Subclass References to the Current Class, for search notes on
plural valves and their actuators.
SEE OR SEARCH THIS CLASS, SUBCLASS:
232 for tire stems with inflation check valve and cap.
247.17 for plural serial valves combined with liquid seal
apparatus.
269 for serially arranged valves, flow controllers, or
closures, wherein one of these is a removable closure which
is entirely separated from the remaining structure in order
that a flow section may be attached in place thereof.
285 299 and 300, for hydrants including a main valve and a
serially arranged supplemental valve.
391 for liquid level control of both inflow and outflow of a
tank.
583 for systems with plural openings, one of which is an
access opening or a gas vent.
596 for drain and stop and waste valves, and see the search
notes thereto.
599.06-599.07, for systems where flow is divided into
parallel flow lines then recombined having a digital flow
controller for separately actuated valves and their flow
lines.
599.08 for systems where flow is divided into parallel flow
lines then recombined having a multi way serial valve at
dividing or recombining of the flow lines.
SEE OR SEARCH CLASS:
222, Dispensing, 445 and 450+ for measuring traps with
valved inlets and outlets and subclasses 478+ for dispensing
containers with plural openings.
251, Valves and Valve Actuation, subclass 118 for a valve in
series with a restrictor.
Subclass:
614
This subclass is indented under subclass 613. Systems in
which the flow path includes joined, disconnectible,
sections; one of the valves, flow controllers or closures
being retained with each section.
SEE OR SEARCH THIS CLASS, SUBCLASS:
572 for series connected tanks with valved separable
connections, and see the search notes thereto.
637.05 for serial valves with actuators correlated across a
separable joint in the flow path.
Subclass:
614.01
This subclass is indented under subclass 614. Systems in
which (1) the faces which seat the valves, flow controllers,
or closures, when the sections are disjoined, abut each other
when the sections are joined, (2) the valves, flow
controllers, or closures, have integral with them that
structure which joins the flow path sections.
Subclass:
614.02
This subclass is indented under subclass 614. Systems in
which actuation of each of the valves, flow controllers, or
closures is simultaneous with the joining or disconnecting of
the flow path sections.
SEE OR SEARCH THIS CLASS, SUBCLASS:
223 for systems including coupling operated serial valves in
which one of the valves is an inflation stem for a pneumatic
tire or other inflatable article.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, 348 for supply means carried receiver flow
control opening means wherein receiver actuated supply
discharge means may also be included.
244, Aeronautics, subclass 135 for arrangements for storing
and feeding fuel on aircraft, or for supplying fuel to or
removing fuel from aircraft.
Subclass:
614.03
This subclass is indented under subclass 614.02. Systems in
which the joining or disconnecting includes a linear
component of motion of the flow path sections with respect to
each other, which linear component results in the operation
of both valves, flow controllers or closures.
Subclass:
614.04
This subclass is indented under subclass 614.03. Systems in
which the force which moves the valves, flow controllers, or
closures is transmitted from one to the other and vice
versa.
Subclass:
614.05
This subclass is indented under subclass 614. Systems in
which actuation of one of the valves, flow controllers or
closures is simultaneous with the joining or disconnecting of
the flow path sections.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 89.5 for a valve
related to separable flow path sections wherein blocking of
the valve actuator is related to the joint between the
sections, and subclass 149.9 for a valve related to separable
flow path sections wherein blocking of the coupling operation
is related to the valve or its actuator.
Subclass:
614.06
This subclass is indented under subclass 614. Systems in
which the act of joining the flow path sections and the act
of operating one of the valves, flow controllers, or closures
must be performed in a predetermined sequence.
SEE OR SEARCH CLASS:
141, Fluent Material Handling, With Receiver or Receiver
Coacting Means, subclass 335, 336, 348+, and 351+ for a
valved joint between a portable supply and a receiver, the
valve being operated by the act of connecting or
disconnecting them.
251, Valves and Valve Actuation, subclass 89.5 and 149+ for
a valve operated by coupling motion of flow path sections,
subclass 89.5 also including features of the coupling which
may block or disable the valve actuator.
Subclass:
614.11
This subclass is indented under subclass 613. Systems in
which the several valves are operated by a single actuator.
Subclass:
614.12
This subclass is indented under subclass 614.11. Systems
comprising a faucet-type cock having a closure which coacts
with either the inlet or outlet end of the cock and is
connected with the main cock valve for simultaneous actuation
therewith.
Subclass:
614.13
This subclass is indented under subclass 614.11. Systems
wherein as one valve is moved toward its closed position,
another valve is simultaneously moved toward its open
position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
329.1 and 329.2+, for valves having a supplementary valve
which is normally held open but closes upon disassembly of
the main valve to prevent loss of fluid during repair of the
main valve.
Subclass:
614.14
This subclass is indented under subclass 614.13. Systems in
which at least one valve is biased by spring means, gravity
or fluid pressure.
Subclass:
614.15
This subclass is indented under subclass 614.11. Systems in
which the valve heads are simultaneously moved toward or away
from oppositely directed seats by a common actuator through a
right and left hand screw relationship.
Subclass:
614.16
This subclass is indented under subclass 613. Systems in
which the movable element of one valve forms the seat for the
movable element of another valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
637.5 for concentric rotary plug type valves having co-axial
stems, the inner valve being removable without disturbing the
outer valve.
Subclass:
614.17
This subclass is indented under subclass 614.16. Systems in
which a valve comprising a head and seat is carried by and
movable with the head of another valve.
Subclass:
614.18
This subclass is indented under subclass 613. Systems in
which the head portion of one valve is carried by and movable
with the head of another valve.
Subclass:
614.19
This subclass is indented under subclass 613. Systems in
which at least one of the valves is biased by spring means,
gravity or fluid pressure and which is also provided with an
operator therefor which is manually actuatable from outside
the system.
Subclass:
614.2
This subclass is indented under subclass 613. Systems in
which at least one of the valves is of the check valve type,
thereby preventing flow in one direction.
Subclass:
614.21
This subclass is indented under subclass 613. Systems in
which two valve seats are provided in coaxial relationship,
each seat having a separately actuatable head associated
therewith.
Subclass:
615
This subclass is indented under subclass 561. Systems
comprising a spout, nozzle or similar fluid flow conduit
having two or more sections joined for relative angular
movement in one or more planes whereby the device may be
swung or otherwise caused to assume various delivery or
nonuse positions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
274 for water cranes having a valve operated by the spout.
276 for water cranes having a spout articulated to a
rotating riser.
279 for water cranes having a spout articulated to
nonrotating risers.
438 for movable inlet terminals in float arm operated valve
control of liquid level.
577 for tanks combined with a movable outlet pipe or spout
when level or quantity discharged is regulated thereby,
especially subclass 579 for swinging spouts or pipes, and see
the search notes to subclass 577.
801 for fixed or flexible nozzles or spouts.
SEE OR SEARCH CLASS:
193, Conveyors, Chutes, Skids, Guides, and Ways, appropriate
subclasses, especially subclass 16, 17+, 22, and 23 for
swinging conveyor chutes.
222, Dispensing, 526 for dispensers having movable material
discharge guides, especially subclasses 533+ for swingable
discharge guides.
406, Conveyors: Fluid Current, 113 and 114+ for a fluid
current conveyor having a movable inlet or movable outlet,
respectively.
Subclass:
616
This subclass is indented under subclass 615. Systems in
which relative movement of the sections of the flow conduit
actuates a valve which controls flow through the conduit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
274 for water cranes having a valve operated by the spout.
286 for hydrants having a valve actuated by movement of the
riser.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclass 318
for air blast cleaners in which the air supply control is
interlocked with nozzle motion means.
222, Dispensing, 519, 522+ and 526+, especially subclasses
528, 529, 531+, 536, and 537 for dispensers having movable
material discharge guides associated with closures.
251, Valves and Valve Actuation, subclass 149 for single
flow path devices having a single valve contained in a pipe
coupling or union in which the valve is operated by motion of
the coupling or conduit, and subclasses 341+ and 349+ for
valves having a casing, inlet or outlet which is also an
actuator for the valve.
Subclass:
616.3
This subclass is indented under subclass 616. Devices
wherein the movement of the flow conduit produces plural
motions of the valve or valve components.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.36 for a particular mechanical actuator providing plural
motions of a valve flow control member with repair, tapping,
assembly, or disassembly means.
Subclass:
616.5
This subclass is indented under subclass 616. Devices
wherein the movement of the flow conduit produces
reciprocating motion of the valve or valve components.
Subclass:
616.7
This subclass is indented under subclass 616. Devices
wherein the movement of the flow conduit produces rotary
motion of the valve or valve components.
Subclass:
624.11
This subclass is indented under subclass 561. Subject matter
in which an actuating means provides (1) a continuously
repetitive operation of one or more valves, (2) a single
cycle of operation terminating in a position to restart an
additional cycle, which cycle is more complex than a mere
opening and closing of a single valve, or (3) a valve
operation brought about at a particular time of day, or after
a particular time delay period, following initiation of a
nonfluid timer.
SEE OR SEARCH THIS CLASS, SUBCLASS:
169 for cyclic gas pressure control of liquid feed traps to
boilers.
387 for washing machine cycle control by level responsive
means.
SEE OR SEARCH CLASS:
62, Refrigeration, subclass 231 for time or program
actuation of a refrigeration device.
110, Furnaces, subclass 55 for timer control of a furnace
door.
119, Animal Husbandry, 51.11 for a timer controlled feeding
device.
126, Stoves and Furnaces, subclass 285.5 for a timer
controlled damper.
210, Liquid Purification or Separation, 138 for timer
controlled liquid treatment and subclasses 141+ for
programmer controlled liquid treatment.
222, Dispensing, 14 for a dispenser having a cut-off
operated by a selectively preset volume or rate of flow
responsive mechanism, and subclasses 638+ for a timer
controlled dispenser. Class 222 takes those patents which
significantly claim a supply container.
239, Fluid Sprinkling, Spraying, and Diffusing, subclass 66
for serially operated means distributing fluid to a diffuser,
and subclasses 67+ for selectively preset means serving to
cut off flow to a diffuser.
251, Valves and Valve Actuation, 48 for a fluid dashpot,
controlled valve or fluid controlled valve timer.
431, Combustion, 18 for a burner assembly having a timer,
programmer, or condition responsive control.
Subclass:
624.12
This subclass is indented under subclass 624.11. Subject
matter with means utilized for valve control independent of
the programmer or timer.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 289 for a valve
actuatable from any of a plurality of positions.
Subclass:
624.13
This subclass is indented under subclass 624.11. Subject
matter in which the actuating means is capable of causing a
cycle of operation of one or more valves to be repeated.
Subclass:
624.14
This subclass is indented under subclass 624.13. Subject
matter powered by the fluid controlled by the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
132 for a periodically operated siphon.
386 for a liquid level responsive or maintaining system
where the control is related to an accumulated quantity of
the main flow.
396 for a tank which empties itself as often as filled to a
given level.
SEE OR SEARCH CLASS:
73, Measuring and Testing, 232 for a material operated
expansible chamber self cycling valve in a meter.
Subclass:
624.15
This subclass is indented under subclass 624.13. Subject
matter in which means is provided for changing the cycle of
operation.
Subclass:
624.16
This subclass is indented under subclass 624.15. Subject
matter in which the change is brought about by either
attaching or removing an element of the device.
Subclass:
624.17
This subclass is indented under subclass 624.15. Subject
matter in which the change is brought about by shifting the
position of a cam element with respect to another portion of
the device.
Subclass:
624.18
This subclass is indented under subclass 624.11. Subject
matter in which the actuating means causes sequential
operations of a single valve or an operation of each of a
plurality of valves in sequence.
Subclass:
624.19
This subclass is indented under subclass 624.18. Subject
matter in which the valve or valves, are each biased toward
one position and are latched against the bias, and a trip or
trips, are controlled for releasing the latch.
(1) Note. Where a single trip is involved, the trip must be
operated a plurality of times.
Subclass:
624.2
This subclass is indented under subclass 624.18. Subject
matter in which the sequential operations complete a single
cycle of operation (e.g., open and close a valve) and means
is provided for changing the cycle.
Subclass:
624.21
This subclass is indented under subclass 624.11. Subject
matter in which the actuating means includes the alarm
mechanism of an alarm clock.
Subclass:
624.22
This subclass is indented under subclass 624.11. Subject
matter including means biasing the valve in one direction,
biased means latching the valve against its bias, and a cam
for moving the latching means against its bias to free the
valve for movement under its bias.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 66 for a biased valve
latched against the bias and having means to trip the latch
so as to release the valve.
Subclass:
624.27
This subclass is indented under subclass 561. Device wherein
an impediment means is provided to maintain a valve in one
position of adjustment, and wherein a means responsive to a
change in the fluid condition is effective, upon such change,
to remove or disable the impediment means or to override its
holding action to permit movement of the valve from the one
position.
Subclass:
625
This subclass is indented under subclass 561. Subject matter
in which a single valve controlling communication with three
or more flow lines, has its actuator or actuator so arranged
or related as to determine or aid in the determination of the
relative order, duration or magnitude of flow through each of
the several flow lines.
(1) Note. See the class definition, Lines With Other
Classes and Within this Class, (2) Plural Valves, and
Subclass References to the Current Class, for collected
search notes on plural actuators for valves and actuators for
plural valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.21 for a process of assembling, disassembling, or
repairing a multi way valve or valve member.
506 for plural condition responsive valves, at least one of
which has a separate reactor surface.
512 for plural condition responsive valves of the direct
acting type.
561 for distribution systems involving plural valves, with
or without their actuators, in combination with flow
containing means more extensive than that required to mount
the valves.
SEE OR SEARCH CLASS:
192, Clutches and Power-Stop Control, subclass 87.13 and
87.18 for a multiway valve used to distribute fluid pressure
to multiple clutches.
Subclass:
625.11
This subclass is indented under subclass 625. Devices in
which a valve unit has a number of outlet ports and a lesser
number of inlet ports, usually one, or a number of inlet
ports and a lesser number of outlet ports, some of the ports
being opened or closed as others close or open.
Subclass:
625.12
This subclass is indented under subclass 625. Devices in
which a plurality of ports are sequentially progressively
opened or closed by a valve unit.
Subclass:
625.13
This subclass is indented under subclass 625.12. Devices in
which the first opened port is subsequently closed by
continued movement of the valve unit.
Subclass:
625.14
This subclass is indented under subclass 625.13. Devices
comprising two or more inlets or admissions passages and two
or more outlets or discharge passages wherein there is flow
combining followed by flow dividing.
Subclass:
625.15
This subclass is indented under subclass 625.13. Devices
which comprise valve units which only rotate.
Subclass:
625.16
This subclass is indented under subclass 625.15. Devices
comprising rotary plugs.
Subclass:
625.17
This subclass is indented under subclass 625. Devices in
which control of flow passages may be obtained by
reciprocation or rotation of the valve.
Subclass:
625.18
This subclass is indented under subclass 625. Devices having
a plurality of distinct conduits or passages, flow through
which is so controlled by a single valve unit that flow lines
never unite.
Subclass:
625.19
This subclass is indented under subclass 625.18. Devices
wherein the valve unit is of the rotary type.
SEE OR SEARCH THIS CLASS, SUBCLASS:
587 for tank systems where one passage is a vent.
Subclass:
625.2
This subclass is indented under subclass 625. Devices
comprising a flow line controlled by a valve unit which has a
passage connectible between atmosphere and the downstream
portion of the line, whereby that portion may be completely
drained or fluid therein may escape to waste.
SEE OR SEARCH THIS CLASS, SUBCLASS:
307 for similar structure in hydrant valves.
589 and 596+, for systems which are vented or drained.
Subclass:
625.21
This subclass is indented under subclass 625.2. Devices in
which the valve unit rotates.
Subclass:
625.22
This subclass is indented under subclass 625.21. Devices in
which the valve unit is a rotary plug.
Subclass:
625.23
This subclass is indented under subclass 625.22. Subject
matter wherein a plurality of lines downstream of the valve
will be drained.
Subclass:
625.24
This subclass is indented under subclass 625.22. Subject
matter having radially and longitudinally extending passages
in the plug.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 310 for plugs with
axial and radial flow in a single flow line.
Subclass:
625.25
This subclass is indented under subclass 625.2. Devices
wherein the valve unit reciprocates rectilinearly.
Subclass:
625.26
This subclass is indented under subclass 625.25. Devices
wherein the valve unit comprises a disk or plug for
controlling one port and a gate or piston for controlling
another port.
Subclass:
625.27
This subclass is indented under subclass 625.25. Devices
wherein the valve unit comprises a plurality of disk or plug
faces, each controlling a different port.
Subclass:
625.28
This subclass is indented under subclass 625. Devices
comprising a single inlet or admission passage and a single
outlet or exhaust passage, the passages being joined by a
plurality of flow lines or passages controlled by a valve
unit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
309 for regenerative furnace reversing valves which
similarly control flow.
599.08 for systems where flow is divided into parallel flow
lines then recombined having a multi way serial valve at
dividing or recombining of the flow lines.
Subclass:
625.29
This subclass is indented under subclass 625.28. Devices in
which the valve has connections in addition to those for the
inlet and outlet to provide for dividing and recombining,
e.g., a main passage with a connection for diverting flow to
a device other than a valve and a connection for returning
the flow to the main passage.
Subclass:
625.3
This subclass is indented under subclass 625.28. Devices
having means to vary the flow through the parallel paths.
SEE OR SEARCH THIS CLASS, SUBCLASS:
599.04 for system shaving flow inlets that divide into
parallel flow lines then recombining having a digital flow
controller.
599.05-599.07, for systems where flow is divided into
parallel flow lines then recombining having a digital flow
controller.
Subclass:
625.31
This subclass is indented under subclass 625.28. Devices in
which the valve unit rotates.
Subclass:
625.32
This subclass is indented under subclass 625.31. Devices in
which the valve unit is a rotary plug.
Subclass:
625.33
This subclass is indented under subclass 625.28. Devices
wherein the valve has a linear motion to and from flow
obstructing position.
Subclass:
625.34
This subclass is indented under subclass 625.33. Devices
having a spool type valve (i.e., two port controllers
immovably mounted on a single valve stem, said controllers
coacting with co-axial seats).
SEE OR SEARCH THIS CLASS, SUBCLASS:
628 especially subclasses 630.19+ for spool type valves
having heads with relative movement with respect to each
other.
Subclass:
625.35
This subclass is indented under subclass 625.34. Devices
wherein one flow path is through the longitudinal axis of the
spool, e.g., a hollow spool with flow therethrough.
Subclass:
625.36
This subclass is indented under subclass 625.34. Devices
having port controllers of unequal size generally to
partially balance the valve.
Subclass:
625.37
This subclass is indented under subclass 625.33. Subject
matter wherein the valve is of the piston type.
SEE OR SEARCH THIS CLASS, SUBCLASS:
538 for line condition change responsive piston valves.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 190 for piston
valves with means to increase the head and seat contact
pressure to reduce wear upon operation.
Subclass:
625.38
This subclass is indented under subclass 625.37. Subject
matter wherein the piston provides an internal flow passage
for the line fluid.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 325 for other
piston valves providing an internal flow passage.
Subclass:
625.39
This subclass is indented under subclass 625.38. Subject
matter including sequential opening or closing of serial
ports in a single flow line.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 210 for sequential
opening or closing of serial ports without dividing and
recombining the flow.
Subclass:
625.4
This subclass is indented under subclass 625. Devices
wherein a branched flow line has two or more controlled
inlets connected to a single outlet.
Subclass:
625.41
This subclass is indented under subclass 625.4. Devices
comprising a rotary valve.
Subclass:
625.42
This subclass is indented under subclass 625. Devices in
which one direction or kind of movement of the valve unit
from an intermediate closed position will open one or a
reduced number of a plurality of ports, and another direction
or kind of movement of the valve unit will open another, the
remaining, or all the ports.
Subclass:
625.43
This subclass is indented under subclass 625. Devices
comprising four way valves having an inlet port, an outlet
port and two intermediate ports, the valve being selectively
movable into two positions, in one position the inlet port
being connected to the first intermediate port and the second
intermediate port being connected to the outlet port, and in
the other position the inlet being connected to the second
intermediate port and the first intermediate port being
connected to the outlet port.
SEE OR SEARCH THIS CLASS, SUBCLASS:
309 for reversing valves, regenerative furnace type.
625.29 for this structure when used in dividing and
recombining structures.
Subclass:
625.44
This subclass is indented under subclass 625. Devices in
which the valve disk or plug unit swings around the means by
which it is mounted with respect to the valve seats or casing
and thereby controls two or more branched flow passages.
Subclass:
625.45
This subclass is indented under subclass 625.44. Devices in
which the valve moves transversely of the controlled flow
passages.
Subclass:
625.46
This subclass is indented under subclass 625. Devices
comprising a valve head which rotates about its axis and has
a flow passage within it, and wherein two or more branched
flow passages are controlled.
Subclass:
625.47
This subclass is indented under subclass 625.46. Devices
comprising a plug type body in which the flow passage has an
inlet or outlet transverse to the axis of rotation and which
forms a seat contacting portion.
Subclass:
625.48
This subclass is indented under subclass 625. Devices in
which the valve unit moves rectilinearly to and from seats of
controlled passages and thereby controls two or more branched
flow passages.
Subclass:
625.49
This subclass is indented under subclass 625.48. Devices
wherein the valve unit comprises a disk or plug for closing
one port and a gate or piston for closing another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
625.17 for similar structure wherein the operation is by
selective reciprocation or rotation.
Subclass:
625.5
This subclass is indented under subclass 625.48. Devices
comprising oppositely facing seating surfaces for co-axially
aligned seats.
Subclass:
625.6
This subclass is indented under subclass 625.2. Device in
which the valve unit is actuated by a fluid pressure motive
means controlled by an auxiliary or pilot valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 25 for pilot valve
controlled fluid actuated valves.
Subclass:
625.61
This subclass is indented under subclass 625.6. Device
wherein the valve actuating mechanism is connected to a fluid
pressure line and responsive to pressure differentials
therein to move the valve, and wherein the pilot includes a
constantly discharging opening connected to the line, and a
modulating restrictor adjacent the opening and movable to and
from the opening to vary the rate of flow and modify the
pressure to thereby actuate the valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
83 for a jet control modulator, per se.
Subclass:
625.62
This subclass is indented under subclass 625.61. Device
having two lines, each having an opening discharging toward
the other, and wherein the restrictor is located between the
orifices and movable to lower the pressure in one line and
increase the pressure in the other.
Subclass:
625.63
This subclass is indented under subclass 625.6. Device in
which a single pilot valve controls a plurality of valve
actuating motor chambers.
Subclass:
625.64
This subclass is indented under subclass 625.6. Device in
which the pilot valve is operated by electric motive means.
Subclass:
625.65
This subclass is indented under subclass 625.2. Device in
which the valve unit is operated by a power driven actuating
mechanism.
Subclass:
625.66
This subclass is indented under subclass 625.65. Device in
which the motor is actuated by a fluid.
Subclass:
625.67
This subclass is indented under subclass 625.25. Device
wherein the valve unit is a reciprocating piston.
Subclass:
625.68
This subclass is indented under subclass 625.67. Device
wherein the piston has a flow passage within it for the line
fluid.
Subclass:
625.69
This subclass is indented under subclass 625.67. Device
wherein an annular exterior flow passage for the line fluid
is provided between adjacent seat engaging heads.
Subclass:
626
This subclass is indented under subclass 561. Subject matter
in which two or more valves of the type normally actuated by
turning a relatively small thumb piece have means
interrelating the motions of these thumb pieces.
(1) Note. The pet cocks may be arranged at different levels
on a fluid receptacle to serve as a test for maximum and
minimum fluid levels in the receptacle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
595 for distribution systems having a common valve operator
for valves in noncommunicating flow paths.
861 for distribution systems having a single inlet and
plural outlets in which at least one flow control means is
provided and at least two passages are controlled.
SEE OR SEARCH CLASS:
222, Dispensing, 485 for dispensers having plural discharge
outlets with interconnected or integral flow controllers.
Subclass:
627
This subclass is indented under subclass 561. Subject matter
in which the plural valves are of the distributor type, i.e.,
comprise a number of valve-controlled outlets and a lesser
number of inlets, usually one, or a number of
valve-controlled inlets and lesser number of outlets, some of
the valves of the larger number opening or closing as others
close or open.
SEE OR SEARCH THIS CLASS, SUBCLASS:
255 for plural tanks with parallel flow, especially subclass
256 for sequentially filled and emptied tanks.
262 for plural tanks comprising flow dividing compartments.
263 and 266, for manifold type flow.
602 for distribution systems having plural inlets and a
single outlet.
861 for distribution systems having a single inlet and
plural outlets, in which at least one flow control means is
provided and two or more passages are controlled.
SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, subclass 449 and 450 for
rotary distributing valves for fuel to internal-combustion
engines.
239, Fluid Sprinkling, Spraying, and Diffusing, subclass 66
for sprinkling and spraying devices having serial discharge.
Subclass:
627.5
This subclass is indented under subclass 561. Devices
wherein an actuator moves one valve from an open to a closed
position after which the same actuator moves another valve
from a closed to an open position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
627 for sequential alternately seating valves of the mixing
or distributing type.
Subclass:
628
This subclass is indented under subclass 561. Subject matter
in which two or more valves are so arranged or actuated that
one valve starts to open or close prior to another
concurrently opening or closing valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
184 for successively opened fluid responsive valves for
venting liquid in a diverse fluid containing pressure
system.
625.12 for mixing valves in which sequential flow is
produced by a valve unit.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 486 for plural outlet valves in a
dispenser having actuating means for variable operation of
the valves.
251, Valves and Valve Actuation, 77 for lost motion
arrangements between a single valve and its actuator.
Subclass:
629
This subclass is indented under subclass 628. Subject matter
in which the valves are located in flow passages which are
connected in parallel.
(1) Note. The effect of the prior opening of one valve may
be to admit fluid pressure to the down stream side of the
other valve to more nearly balance the pressure acting on the
same and thus reduce the effort required to open the same.
SEE OR SEARCH THIS CLASS, SUBCLASS:
513.3 for direct response valves having a permanently open
bleed port.
599.01-601.21, for systems dividing into parallel flow lines
then recombining.
Subclass:
630
This subclass is indented under subclass 629. Subject matter
in which one valve is arranged to control a passage through
the other valve element.
(1) Note. The valves are frequently arranged so that they
are concentric and the smaller valve, which is the first to
open, seats against the larger valve.
(2) Note. Frequently, the initially opened supplemental
valve is mounted on and seats against the main valve and is
termed a "pilot" valve although no servo-motor action is
present because the supplemental valve merely tends to partly
equalize the pressures on opposite sides of the main valve so
that the main valve may be opened more easily against line
pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
630.21 and 637.5, for other concentric valves.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 38 for fluid actuated or
retarded valves in which a pilot valve is seated on the motor
or valve element.
Subclass:
630.11
This subclass is indented under subclass 630. Systems which
are disclosed, or structurally limited, for use in steam
locomotives to control the feeding of steam to the motor
means.
Subclass:
630.12
This subclass is indented under subclass 630. Systems in
which at least one of the valves has a reciprocatory,
rectilinear motion substantially normal to the fluid path.
Subclass:
630.13
This subclass is indented under subclass 630. Systems in
which a pilot valve controls line pressure in a separate
chamber which balances, or tends to balance the pressure
differential across the second opened valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 38 for pilot valve
controlled choked pressure type servo-motor valve actuators
in which the pilot valve is seated in the motor or main valve
element.
Subclass:
630.14
This subclass is indented under subclass 630. Systems in
which a structure rigidly connected to a first opened valve
head engages structure rigidly connected to a second valve
head so that continued motion of the first valve operator
subsequently causes the second valve head to be positively
opened.
Subclass:
630.15
This subclass is indented under subclass 630. Systems in
which a continuous motion of the actuator causes the actuator
to engage and open one valve and then to engage and open a
second valve.
Subclass:
630.16
This subclass is indented under subclass 630. Systems in
which, after the sequentially actuated valves are opened, the
first opened valve is closed.
Subclass:
630.17
This subclass is indented under subclass 630.16. Systems in
which the valves are so related to each other that motion of
one is necessarily accompanied by motion of the other, or
others.
Subclass:
630.18
This subclass is indented under subclass 628. Systems in
which (1) at least one of the valves is screw actuated and
the remaining valve or valves are biased so that as the screw
is actuated one of the valves is moved to or from its seated
position and further actuation of the screw in the same
direction then moves the remaining valve or valves, against
the bias, to or from the seated position, or (2) both valves
are screw actuated by a common operator and a lost motion
connection is provided between the two movable valve elements
or between one of the valve elements and its screw actuator.
Subclass:
630.19
This subclass is indented under subclass 628. Systems in
which there is provided a lost motion connection between the
actuating means and one or more of the valves so that a
continuous motion of the actuating means causes first one and
then other valves to sequentially open or close.
SEE OR SEARCH THIS CLASS, SUBCLASS:
630.16 for sequentially progressive opening of plural valves
with subsequent closing of the first opened passage in which
there is lost motion between the actuator and the valves.
Subclass:
630.2
This subclass is indented under subclass 630.19. Systems in
which cam means, usually between the actuator and the valves,
compels the sequential actuation of the valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
630.16 for cam actuated sequentially operated valves in
which the first opened port is subsequently closed after
another port has been opened.
Subclass:
630.21
This subclass is indented under subclass 630.19. Systems in
which the valves rotate about a common axis, one valve having
relative motion with respect to and within the other, and
having a lost motion connection between one of the valves and
the actuator, or the other valve.
Subclass:
630.22
This subclass is indented under subclass 630.19. Systems in
which a subsequently operated valve is actuated by being
contacted by the first or prior actuated valve, but not by
the prior valve's actuator.
Subclass:
635
This subclass is indented under subclass 561. Subject matter
in which a preliminary adjustment of the actuator mechanisms,
not a part or its actuating motion, determines the number or
sequence of valves to be actuated.
(1) Note. See the class definition, section 5 for search
notes on manual valve actuating, selecting and adjusting
mechanism.
Subclass:
636
This subclass is indented under subclass 561. Subject matter
in which one direction or kind of movement given a single
actuator will operate one or a reduced number of a plurality
of valves in either an opening or closing direction and
another direction or kind of movement given the actuator will
operate another, the remaining or all the valves in either an
opening or closing direction.
Subclass:
636.1
This subclass is indented under subclass 636. Devices which
select by means of oppositely movable or usable cam or
eccentric surfaces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
599.06-599.07, for systems where flow is divided into
parallel flow lines then recombined having a digital flow
controller for separately actuated valves and their flow
lines.
Subclass:
636.2
This subclass is indented under subclass 636. Devices in
which the movements are rotation of the actuator arm about
either of two pivots or pivotal axes.
Subclass:
636.3
This subclass is indented under subclass 636. Devices in
which one movement is rotation of the actuator arm about its
pivot and another is rotation about its axis.
Subclass:
636.4
This subclass is indented under subclass 636. Devices in
which the movements are reciprocation of the actuator along,
and rotation of it, about its axis.
Subclass:
637
This subclass is indented under subclass 561. Subject matter
in which a plurality of valves or valve groups each are
provided with individual, but particularly related actuator
mechanisms.
Subclass:
637.05
This subclass is indented under subclass 637. Subject matter
wherein the valves, or valve groups, are located at opposite
sides of a separable joint in the flow path, and the
particular relationship between the actuators includes a
feature of separability of the joint.
SEE OR SEARCH THIS CLASS, SUBCLASS:
614.02 for similar structure wherein the parts which cause
the valves to operate are so intimately related to the
separable joint structure that the joining and disconnecting
action both cause simultaneous actuation of the valve.
Subclass:
637.1
This subclass is indented under subclass 637. Devices having
plural actuators with interlocking means therebetween,
whereby the actuation of one valve is prerequisite to the
actuation of another or additional valves, or whereby the
opening of one valve precludes the opening of another until
such time as the first opened valve has been closed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
383 for valves in combination with a lock or seal.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 89 for valves with means
for blocking or disabling the actuator.
Subclass:
637.2
This subclass is indented under subclass 637. Subject matter
in which at least two independently actuable valves are
provided with stem type actuators, each of which move about
or along a common axis.
Subclass:
637.3
This subclass is indented under subclass 637.2. Subject
matter in which at least one of the coaxial stem valves
pivots about a fixed axis to open or close a fluid path or
paths (e.g., plug valves, butterfly valves, etc.).
Subclass:
637.4
This subclass is indented under subclass 637.3. Subject
matter in which the other coaxial stem valve has a
rectilinear motion with respect to its seat or port.
Subclass:
637.5
This subclass is indented under subclass 637.3. Subject
matter in which a rotary plug valve is within an outer
concentric, separately actuated, rotary plug valve and so
constructed that the central valve may be removed for repair
or other purposes without disturbing the outer valve.
SEE OR SEARCH THIS CLASS, SUBCLASS:
614.16 for a single flow path having plural serial valves in
which one valve head provides a seat for another valve head.
Subclass:
797
This subclass is indented under the class definition.
Subject matter wherein the device includes an element
designed to rupture or break where a force of a magnitude
greater than a predetermined value is applied thereto.
SEE OR SEARCH THIS CLASS, SUBCLASS:
68.11 for devices in which some operation to control the
system is caused by failure of the frangible part.
SEE OR SEARCH CLASS:
222, Dispensing, 541.1 for dispensers with frangible outlet
elements.
Subclass:
798
This subclass is indented under the class definition.
Subject matter wherein the device includes a connecting means
to join two or more flow lines in fluid conducting relation.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 148 for couplings
combined with valves and see the search notes to subclass
148.
285, Pipe Joints or Couplings, for pipe couplings, per se.
Subclass:
799
This subclass is indented under subclass 798. Subject matter
wherein the coupling is capable of flexing, bending or
bowing.
(1) Note. This subclass includes articulated and swivelly
mounted couplings.
SEE OR SEARCH THIS CLASS, SUBCLASS:
615 for articulated or swiveled conduits in distribution
systems, and see the search notes to subclass 615.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, subclass 150 for valve
devices associated with a flexible or expansible coupling.
Subclass:
800
This subclass is indented under the class definition.
Subject matter wherein the device is provided with removable
cap or similar closing means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
232 for tire valve stems with cap.
296 and 371, for covers for hydrants and valve and meter
wells.
377 for guards and shields associated with distribution
systems, especially subclass 382 for valve guards which
prevent access to the valve but do not cut off fluid flow.
583 for closures for access openings for distribution
systems.
613 for single flow path devices with serial valves and/or
closures.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, 89 for closures and plugs
for pipes.
220, Receptacles, 200 for receptacle closures and see the
notes collected in the definition of subclass 200 for a
complete search on closures.
222, Dispensing, 544, especially subclasses 546, 551, 552,
and 554 for flow controllers or closures for dispenser
openings.
Subclass:
801
This subclass is indented under the class definition.
Subject matter wherein the device is provided with a fluid
inlet or outlet in the form of a nozzle or spout which
discharges the effluent in a desired direction or with a
desired pattern or admits and directs it into a receiver of
which it forms a part.
SEE OR SEARCH THIS CLASS, SUBCLASS:
615 for articulated or swiveled nozzles or spouts, and see
the search notes thereto for movable devices of this type.
800 for nozzles or spouts provided with a removable closure
member.
861 for deflector type spouts forming a branch outlet.
SEE OR SEARCH CLASS:
222, Dispensing, 519, 522+, 526+, and 565+ for dispensing
nozzles and spouts, and see section 19, of the class
definition of Class 222 and search notes therein.
239, Fluid Sprinkling, Spraying, and Diffusing, appropriate
subclasses for specific nozzle structures for sprinkling or
spraying fluids.
251, Valves and Valve Actuation, 153 for valves combined
with inlet or outlet structure comprising a single flow path,
especially 155 for valves associated with nozzles or spouts,
subclass 340 for a valve actuator surrounding a nozzle, and
subclass 349 for inlet or outlet element which serves as a
valve actuator.
Subclass:
802
This subclass is indented under the class definition.
Devices not hereinbefore provided for.
(1) Note. For example, in this subclass are found dummy
valves and outlet and conduit forms and materials, including
valve bodies, per se.
SEE OR SEARCH THIS CLASS, SUBCLASS:
561 for systems for branch flow without valves.
594 for plural noncommunicating flow path systems.
799 for flexible couplings for conduits, and see the search
notes thereto.
SEE OR SEARCH CLASS:
222, Dispensing, subclass 575 for miscellaneous dispenser
devices, especially for particular outlet shapes.
Subclass:
803
This subclass is indented under the class definition.
Subject matter wherein movement of a stream of fluid is
controlled by one or more devices, at least one of the
devices having the following characteristics:(A) the stream
is caused to flow into the device through a passage or along
a path of flow, or the stream is caused to flow in a
predetermined condition or amount of flow into the device;
(B) the stream is caused to flow out of the device through a
passage or along a path of flow, and the stream is diverted
to flow out of the device through a different passage or
along a different path of flow, or the stream is caused to
flow in an altered condition or amount of flow out of the
device; (C) the diversion of alteration (referred to in (B)
above) is caused by one or more of the following,(1) direct
contact of at least one other stream of fluid with the inflow
stream, or (2) application of an energy field directly to the
inflow stream, or (3) application of the Coanda effect.
(1) Note. Devices known in the art as "pure fluid devices"
or "fluid amplifiers" and which act to control or vary high
energy flows by relatively low energy flow or fields are here
included.
(2) Note. The phenomenon known as the Coanda effect occurs
when a jet of fluid is injected into a wide container and due
to some disturbance in flow or shape of the container the jet
stream moves to one wall or other of the container and
continues to flow along that wall. As long as the flow is
not otherwise disturbed the flow remains "locked" onto the
wall of the container. Patents having claims directed to
subject matter involving this effect will be found in this
subclass even though no means is claimed to provide for an
additional control of the stream by another stream or an
energy field.
(3) Note. As a general rule, the device of this and
indented subclasses have no moving parts for effecting the
control function. Necessary exceptions to the
"no-moving-parts" rule are in the use of valves to regulate
the amount or direction of control input fluid, or in the use
of mechanism to cause the generation of control input energy
field, or in the use of a surface or element extending
generally along or adjacent the path of any of the streams in
the device, which surface or element is moved to cause a
diversion or variance of the power output relative to the
power input by the "Canada" or "locking" effect referred to
in (2) Note above. See subclasses 829+ for devices referred
to herein.
(4) Note. Line between Class 235 subclass 200+ and Class
137 subclasses 803+. Patents in Class 235 subclasses 200 and
201 were screened for inclusion into these subclasses (803+)
as original patents. Those patents having structural
characteristics of a fluidic device as defined in this
subclass (803) and/or provided for in the subclasses
hereunder were transferred into the appropriate subclasses in
accordance with their structure. The functional
characteristics of said patents were further indexed into the
coordinate index dual system in accordance with their named
function(s). Patents claiming significant computer structure
or function were excluded from Class 137 and were retained in
Class 235. Examples of what is "not significant" and
"significant" will help to clarify the line dividing the
classes. The mere statement in a claim of "a binary counter"
or "a half-adder", or "converter" comprising one or more
fluidic devices is "not-significant" (and thus is proper for
subclasses 803+) even though the fluidic devices are
described by such exemplary fluidic terms as "logic element",
"bi-stable or flip-flop element", "and element" (as well as
similar "logic" terms) and "amplifier".
Such terms have acquired acceptance in the fluidic arts as
well as the electronic and computer arts. However, the
further inclusion in such a claim of mathematical functions
performed by the circuit, (e.g., "exponential function",
"square-root", "integration") or mathematical equations or
numerical values of results achieved by the device or
circuit, would be "significant" computer terminology, and
thus be not proper for Class 137. Note, however that a
claimed equation defining the configuration of fluidic
passages or walls does not define a mathematical result
achieved, thus the patent containing such equation is proper
for Class 137; and further note that the specific binary
numbers "one" and "zero" define merely conditions of "on" and
"off" in a fluidic device, thus the patent containing such
numbers is also proper for Class 137.
SEE OR SEARCH CLASS:
60, Power Plants, 231 for a reaction motor having fluidic
means to deflect the jet stream of the motor.
91, Motors: Expansible Chamber Type, subclass 3 for an
expansible chamber motor controlled by a fluidic device or
system.
116, Signals and Indicators, especially 137 for sound
generating apparatus including a fluidic device or system
therein.
123, Internal-Combustion Engines, especially 378 for an
engine having a fuel supply and a fluidic device for
controlling the fuel supply to thereby regulate the engine
speed.
128, Surgery, especially subclass 204.24 for a
forced-inhalation respirator having a fluidic device to
control the respirator.
138, Pipes and Tubular Conduits, especially 37 for a flow
regulator.
200, Electricity: Circuit Makers and Breakers, especially 81
for an electric switch actuated by fluid pressure.
235, Registers, 200 for a computer using a fluidic device or
system, and see (5) Note above for a line between Class 235
and Class 137.
239, Fluid Sprinkling, Spraying, and Diffusing, especially
265.19, 398+, and 533.1 for apparatus having a discharge
nozzle from which nozzle a discharge stream issues and the
discharge stream is varied, (e.g., as to its direction or
amount) by a stream of control fluid, wherein the discharge
stream and the control fluid, or the control fluid alone,
pass through a fluidic device. The fluidic device, per se,
is found in Class 137 subclasses 803+, but the combination of
fluidic device and discharge nozzle is properly in Class
239.
251, Valves and Valve Actuation, 12 for a valve that is
actuated by a fluidic device.
261, Gas and Liquid Contact Apparatus, especially subclass 36
for an apparatus having a carburetor for mixing liquid fuel
and air to form a fuel vapor, in which carburetor either
fluid passes through a fluidic device.
417, Pumps, especially 151 for a jet pump used for pumping
fluid.
For purposes of simplification, the following terms will be
used in the definitions hereafter, and the definitions of
these used terms will not require repetition in the subclass
definitions that follow:
CONTROL INPUT
Stream or energy field, referred to in the subclass
definition, (C) (1) and (C) (2) above, that causes the
diversion or alteration of the output stream.
PASSAGE
Channel or duct that surrounds and guides a stream of fluid
or energy in a desired path or direction.
POWER INPUT
Stream, referred to in the subclass definition, (A), above,
that flows into the devices.
POWER OUTPUT
Stream, referred to in in the subclass definition, (B),
above, that flows out of the device;
Subclass:
804
This subclass is indented under subclass 803. Device or
system which senses or detects or which is provided with
additional means to sense or detect, a characteristic or
state of the environment outside of said device or system,
and which generates a signal or impulse as a result of such
sensing or detecting.
(1) Note. This and indented subclasses provide a locus for
patents wherein a condition of fluid is sensed, such as, for
example, the level of liquid in a tank, or the speed of fluid
flow, or the temperature of fluid (as reflected in the
frequency of pulses therein). In the patents of this subclass
(804) a signal indicating the condition is sent. In the
patents of the indented subclass (805) the signal activates
mechanism to change or correct the sensed condition. Thus,
it is apparent that this subclass (804) and the indented
subclass (805) provide for a fluid-handling system
classifiable in Class 137 which system includes a
subcombination (e.g., a valve, tank, etc.) that, per se, is
not proper for original classification in subclasses 803+.
However, the patent to the system is classifiable herein due
to the inclusion of a fluidic device as a subcombination of a
fluid-handling system.
SEE OR SEARCH CLASS:
374, Thermal Measuring and Testing, subclass 118 for a
temperature responsive fluidic oscillator combined with an
indicating device.
Subclass:
805
This subclass is indented under subclass 804. Device or
system wherein the signal or impulse activates said device or
system or activates another mechanism for the purpose of
varying the characteristic or state of the environment or for
the purpose of restoring the characteristic or state of the
environment to that which is desired.
Subclass:
806
This subclass is indented under subclass 803. Device or
system involving the use therein of two or more different
fluids or of fluids having different characteristics.
SEE OR SEARCH THIS CLASS, SUBCLASS:
815 and 822+, for a device or system involving use of two or
more sources of the same kind of fluid.
SEE OR SEARCH CLASS:
261, Gas and Liquid Contact Apparatus, subclass 36 for
apparatus having a carburetor for mixing liquid fuel and air
to form a fuel vapor, in which carburetor either fluid passes
through a fluidic device, and subclasses 75+ for a device
producing intimate contact between gases and liquids.
Subclass:
807
This subclass is indented under subclass 803. Device or
system involving the use therein of a specific fluid or a
fluid having specific characteristics.
SEE OR SEARCH THIS CLASS, SUBCLASS:
806 for a device or system involving use of two or more
different fluids.
Subclass:
808
This subclass is indented under subclass 803. Device or
system provided with means to compel any of the streams of
fluid to turn about an axis in a generally circular (i.e.,
"vortex") path.
(1) Note. The "means to compel" referred to above is
usually a circular or elliptical interior wall of a chamber
through which the fluid stream passes, but may also comprise
a helical or spiral passage for the fluid.
Subclass:
809
This subclass is indented under subclass 808. Device or
system provided with two or more of said means for a
corresponding number of streams.
(1) Note. This subclass is for disclosures of two or more
vortex generators regardless of whether the plural generators
are applied to a single device or are applied to plural
devices of a fluidic system.
Subclass:
810
This subclass is indented under subclass 808. Device or
system wherein said means is a subcombinational element in an
array of fluidic devices forming a fluidic system, and said
means regulates the inflow or outflow of fluid to or from
said array.
SEE OR SEARCH THIS CLASS, SUBCLASS:
814 for a system comprising two or more fluidic devices or
stages.
Subclass:
811
This subclass is indented under subclass 808. Device wherein
said means is part of the common zone referred to in the
definition of subclass 834 or subclass 841.
(1) Note. See (1) Note of subclass 834 for further
discussion of "interaction chamber".
SEE OR SEARCH THIS CLASS, SUBCLASS:
839 for a fluidic device having an enlarged interaction
chamber.
Subclass:
812
This subclass is indented under subclass 808. Device wherein
the flow of fluid into the device is along a straight line
that is substantially perpendicular to a radius line from
said axis, and the flow of fluid out of the device is along
said axis.
(1) Note. The term "input" includes a stream of
subatmospheric pressure (i.e., suction) that causes fluid to
enter the device tangentially.
Subclass:
813
This subclass is indented under subclass 812. Device
provided with means to alter the flow of any of the streams
of fluid into or out of the device.
(1) Note. The alteration is usually of the amount of fluid
flow, but may also be an alteration of path or direction or
other condition of flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
825 for a fluidic device having means to vary the operation
of the device.
Subclass:
814
This subclass is indented under subclass 803. Subject matter
provided with two or more devices of the type defined there,
or provided with a housing having therein two or more groups
of passages for fluid flow, each of which groups acts as a
fluidic device.
(1) Note. Included in this subclass (814) are patents
wherein plural devices are arranged in series or cascaded
array and are supplied by a single power input.
SEE OR SEARCH THIS CLASS, SUBCLASS:
806 for a device or system using two or more different kinds
of fluids.
810 for a system wherein a vortex generator is used as a
control therefor.
Subclass:
815
This subclass is indented under subclass 814. System
provided with two or more passages for a corresponding number
of streams of power input fluid, each said passage leading to
its own device.
(1) Note. Included in this subclass 815 are systems wherein
a power stream supplied from a source is split by a passage
common to all the devices supplied therefrom.
SEE OR SEARCH THIS CLASS, SUBCLASS:
803 Glossary, for the term "power input".
Subclass:
816
This subclass is indented under subclass 815. System wherein
at least one of the streams of power input fluid can be
regulated or altered relative to another, or wherein at least
one of the streams is unequal to another.
(1) Note. The regulation of, or difference between, the
streams can be with respect to degree of flow, frequency of
pulsation, amplitude, phase relationships, etc., these being
only exemplary of the characteristics found in the systems of
this subclass.
Subclass:
817
This subclass is indented under subclass 816. System wherein
at least one of the streams of power input fluid is in the
form of a series of short bursts of fluid timed in a
predetermined sequence or duration, and at least another of
the streams is an uninterrupted stream of power input fluid,
the two different streams being applied simultaneously to the
system.
Subclass:
818
This subclass is indented under subclass 815. System
provided with a supply of control input fluid for at least
one of said devices, which supply can be regulated or
altered, or wherein the supply that is used for control
purposes can be chosen from a plurality of supplies
available.
SEE OR SEARCH THIS CLASS, SUBCLASS:
803 Glossary, for a definition of "Control input".
Subclass:
819
This subclass is indented under subclass 815. System
provided with two or more fluidic devices arranged in a
series array, and also provided with a connection from a
power output passage of a first of said devices to a control
input passage of a second of said devices that is downstream
of said first device.
(1) Note. The connection described may be direct (as via a
passage with two ends, one to a power output and the other to
a control input) or may be indirect (as via a restrictor or
storage tank) or may be supplemental (as via a second passage
to the second device that adds to the effect of a primary
control input to the second device).
Subclass:
820
This subclass is indented under subclass 819. System further
provided with a connection from a power output passage of
said second (i.e., downstream) device to a control input
passage of said first device, whereby at least a portion of
the power output fluid of the second device will affect the
control input of the first device.
(1) Note. The comments relative to the cascade connection
referred to in (1) Note of subclass 819 apply also to the
feedback connection of this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
835 for a fluidic device having feedback means internal to
the device.
Subclass:
821
This subclass is indented under subclass 819. System wherein
at least one of the fluidic devices has control input that is
in the form of a series of short bursts of fluid timed in a
predetermined sequence or duration.
(1) Note. Many of the devices of this subclass are known as
"fluidic oscillator" devices or systems.
Subclass:
822
This subclass is indented under subclass 803. Device
provided with only one (as claimed in the patent thereto)
fluidic device, and further provided with two or more
passages each supplying a stream of power input fluid to that
device.
(1) Note. A careful distinction should be made between
patents disclosing a stream of power input fluid and at least
one stream of control input fluid, and patents (provided for
in this and indented subclasses) disclosing two streams of
power input fluid. The first category is usual and found in
many subclasses, see especially subclasses 834+ and 841. To
fit the second category and be proper for original
classification herein, the claimed disclosure of the patent
should be clear that two power input streams are provided.
Further disclosure of a control input will not bar
classification herein. For further comment on this point,
see (2) Note in the definition of subclass 824.
SEE OR SEARCH THIS CLASS, SUBCLASS:
806 for a device or system using two or more different kinds
of fluid.
SEE OR SEARCH CLASS:
239, Fluid Sprinkling, Spraying, and Diffusing, 543 for a
fluid sprinkling system wherein one fluid stream impinges
upon another.
Subclass:
823
This subclass is indented under subclass 822. Device wherein
each said passage lies along a separate line, and said lines
converge at a zone common to all the lines, and the streams
are directed toward said common zone.
(1) Note. The device of this subclass is sometimes referred
to as a "comparator", especially if the characteristics of
two power streams are compared. Such characteristics may
include pressure, density, temperature, velocity, viscosity,
etc., of the fluid of the streams.
(2) Note. See (1) Note of subclass 834 for further
discussion of "interaction region".
Subclass:
824
This subclass is indented under subclass 823. Device wherein
said separate lines merge into a single line common to both
said passages, and said streams impinge against one another
coaxially in said common zone.
(1) Note. The device of this subclass is usually referred
to as "impact modulator".
(2) Note. This subclass provides for an exception to the
statement in (1) Note of subclass 822 that two power input
streams are provided. A patent having claimed disclosure of
only two co-lineal passages for input of oppositely-directed
fluid will be originally classified in this subclass 824 even
if one of such inputs is termed a "control stream", since it
is clear that the "control stream" is effectively equivalent
to a power input.
Subclass:
825
This subclass is indented under subclass 803. Device
provided with means that is additional to the fluidic device,
which means causes a change in the output stream of the
device.
(1) Note. The regulation is usually applied to the control
input passage, but is not limited thereto. In some instances
the regulating means is applied to a feedback passage, or to
an output passage, or within an interaction chamber. To be
proper for this and indented subclasses, however, it should
be clear that the regulating means is not inherent in the
passages of the device or their configuration but rather is
added to the device for purpose of regulation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
813 for a fluidic device comprising a vortex generator and
means to vary operation of the device.
Subclass:
826
This subclass is indented under subclass 825. Device wherein
the output stream of the device is in the form of a
succession of bursts of fluid issuing from a single outlet or
issuing alternatively from two or more outlets, and wherein
the change that is produced is a change in the time interval
of or between said bursts of fluid.
Subclass:
827
This subclass is indented under subclass 825. Device wherein
said means causes the generation of force other than the
force of a stream of fluid, said force causing a change in
the output stream.
(1) Note. In this subclass (827) the power or energy is
often that of electricity. See (1) Note to the definition of
subclass 831 for a distinction between the subclasses
involved.
(2) Note. The described device, which converts electrical
energy or signals into fluid energy or signals, is often
termed a "transducer".
Subclass:
828
This subclass is indented under subclass 827. Device wherein
the force comprises sound waves or heat waves.
(1) Note. The generation of "compressional" waves by a
vibrating diaphragm has been considered as equivalent to the
generation of sound waves, and patents have been placed
herein on that basis.
SEE OR SEARCH CLASS:
181, Acoustics, for means generating acoustical signals.
Subclass:
829
This subclass is indented under subclass 825. Device wherein
said means is a member that can move relative to the passages
provided for flow of fluid.
(1) Note. This and the indented subclasses are those which
provide for the exceptions to the "no-moving-parts" rule
referred to in (4) Note to the definition of subclass 803.
Subclass:
830
This subclass is indented under subclass 829. Device wherein
the movement of said member occurs at a particular frequency
to cause a succession of bursts of fluid to be emitted.
Subclass:
831
This subclass is indented under subclass 829. Device wherein
the movement of the member is caused by electrical energy.
(1) Note. The distinction between the patents of this
subclass (831) and those of subclass 827 above is that in
subclass 827 energy is directly applied to the fluid with no
intervening structure, and in this subclass (831) the
electrical energy causes the movement of a member which
affects the fluid.
Subclass:
832
This subclass is indented under subclass 829. Device wherein
said member is a means located in or adjacent to the control
input passage that supplies fluid for diverting the power
input stream (referred to in definition of subclass 803).
(1) Note. the term "control input" and "power input" are
defined in (3) Note to the definition of subclass 803.
(2) Note. The member is often a valve that turns on or
shuts off the flow of control input fluid, but can also be a
piston in a chamber through which the control input fluid
passes before entry into the interaction chamber, the
movement of the piston thus causing regulation of frequency
of resonant pulses in the control input stream.
Subclass:
833
This subclass is indented under subclass 803. Device wherein
the device is provided with a housing having passages therein
for guiding the flow of fluid from input to output and
wherein the claimed disclosure of the patent pertains to the
manufactured elements that comprise the device or the manner
in which the elements are assembled to form the device.
(1) Note. In the patents of this subclass (833) it is clear
from the disclosure that a fluidic device is involved, but in
many patents the emphasis of the claims is more on the
component parts that comprise the device than on the way the
device operates fluidically.
SEE OR SEARCH CLASS:
29, Metal Working, especially subclasses 890-890.15 for a
process of making a gas and water device.
Subclass:
834
This subclass is indented under subclass 803. Device
provided with at least five passages joined at a zone common
to all the passages, including a first passage permitting
entry into said common zone of a power input stream of fluid,
a second passage and a third passage permitting entry into
said common zone of control input signals (i.e., stream of
fluid or energy field), said second and third passages being
substantially opposed to one another and substantially
perpendicular to said first passage and the three passages
thus forming approximately a letter "T"; and also including a
fourth passage and a fifth passage permitting exit from said
common zone of power output fluid, said fourth and fifth
passages diverging substantially oppositely away from said
first passage and said common zone and thus forming
approximately a letter "V"; the overall arrangement of
passages thus forming a "V" joined to a "T" at the common
juncture of zone.
(1) Note. The common zone described is known as an
"interaction chamber" or "interaction region", and is
referred to in subclasses 811 and 823 above, as well as being
the subject matter of subclass 839 below.
(2) Note. The arrangement defined permits a control-input
signal to enter the interaction chamber via either the second
passage or the third passage thereby to divert or deflect a
stream of fluid that is entering the common zone via the
first passage. The stream, which has been exiting via one of
the passages (i.e., either the fourth or the fifth) is thus
caused to switch (in full or in part) to thereafter exit via
the other of the passages (i.e., either the fifth or the
fourth) until another control input signal causes another
switch.
Subclass:
835
This subclass is indented under subclass 834. Device further
provided with means permitting at least a portion of the
fluid exiting from said common zone via said fourth or fifth
passage to be diverted from its exit passage and returned to
said common zone.
(1) Note. The feedback fluid may flow via a passage
provided therefor, or may flow in a path along one of the
walls of an enlarged interaction chamber. Moreover, the
feedback fluid may enter the interaction chamber via a port
in the chamber, or may enter the chamber via a port in the
control input passage. Both "negative" feedback and
"positive" feedback are provided for in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
820 for a fluidic system having feedback means from a
downstream (i.e., succeeding) device to an upstream (i.e.,
preceding) device.
Subclass:
836
This subclass is indented under subclass 834. Device wherein
said second and third passages have special structure or
configuration or peculiarity of operation.
(1) Note. Included in this subclass (836) are patents
claiming the control inlet as being supplied with
subatmospheric or suction pressure, or claiming an elongated
passage to produce a delayed signal.
Subclass:
837
This subclass is indented under subclass 836. Device wherein
the special structure includes a plurality of second passages
or a plurality of third passages, the number of passages
permitting control-input signal to enter the common zone thus
being three or more.
Subclass:
838
This subclass is indented under subclass 834. Device
provided with a plurality of fourth passages or a plurality
of fifth passages, the number of passages diverging away from
said common zone permitting fluid to exit from said zone
being three or more, or provided with fourth and fifth
passages that come to a second common zone downstream of the
first common zone.
(1) Note. In the case of the rejoined outlet passages, one
of the passages is usually longer than the other so that a
pulse of fluid through the longer passage will be delayed in
its arrival at the second zone relative to the pulse through
the shorter passage.
Subclass:
839
This subclass is indented under subclass 834. Device wherein
said common zone is greater in size than would normally be
required for passage of fluid therethrough, or wherein the
walls forming the common zone are particularly disclosed as
having a specified configuration.
(1) Note. The enlargement in the interaction chamber is
often disclosed as being for the purpose of preventing
boundary-layer attachment or "lock-on" of the fluid passing
therethrough.
SEE OR SEARCH THIS CLASS, SUBCLASS:
811 for a fluidic device having a vortex generator in the
interaction chamber.
Subclass:
840
This subclass is indented under subclass 834. Device further
provided with a sixth passage joining any of said other
passages or said common zone to ambient surroundings for the
purpose of "bleeding" excess pressure within the device.
Subclass:
841
This subclass is indented under subclass 803. Device
provided with at least four passages joined at a zone common
to all the passages, including a first passage permitting
entry into said common zone of a power input stream of fluid
and a second passage permitting entry into said common zone
of control input signals (i.e., stream of fluid or energy
field), said first and second passages being angularly
related and thus forming approximately ar (Greek letter
"Gamma") or an inverted letter "L"; and also including a
third passage and a fourth passage permitting exit from said
common zone of power outlet fluid, said third and fourth
passages diverging substantially oppositely away from said
first passage and said common zone and thus forming
approximately a letter "V"; the overall arrangement of
passages thus forming a "V" joined to ar at the common
juncture or zone.
(1) Note. The common zone described is known as an
"interaction chamber" or "interaction region", as discussed
in (1) Note to subclass 834.
(2) Note. The arrangement defined is similar to that
defined in subclass 834, and further discussed in (1) Note to
that subclass, with the exception that devices in this
subclass have control-input signal applied from only one side
of the power input. Thus it is often used as a "monostable
amplifier", especially when the power output "locks on" to a
wall of one passage only when a control-input signal is
applied.
Subclass:
842
This subclass is indented under subclass 803. Device
provided with at least two passages joined at a zone common
to both passages, including a first passage permitting entry
into said common zone of a power input stream of fluid and a
second passage permitting exit from said common zone of a
power output stream of fluid, said passages each extending
along a line common to both passages.
(1) Note. The diversion or alteration required by the
definition of subclass 803 is not referred to in the
definition of this subclass because there are many different
ways of accomplishing the diversion in the devices of this
subclass, but the diversion nevertheless is present. Among
the ways of accomplishing the diversion are an enlarged
interaction chamber, a passage for control-input signal, a
plurality of power output passages lying in a common plane
and a passage for control-input signal perpendicular to said
common plane, and a restricted interaction region to which
control-input signal is applied, these being only exemplary
of devices found.
SEE OR SEARCH CLASS:
417, Pumps, especially 151 for a jet pump used for pumping
fluid.
Subclass:
843
This subclass is indented under subclass 511. Valve in which
the valve member or the valve seat is made of resilient
easily deformable material which yields in response to
pressure to open the valve. The restoring force of the
resilient material constitutes a major component of the
biasing means.
(1) Note. The use of resilient sealing means (e.g., rubber
washer) at the valve seat does not make the arrangement
classifiable herein. The use of such sealing means is
conventional throughout the class.
Subclass:
844
This subclass is indented under subclass 843. Valve wherein
the valve member comprises a resilient body which has a
passage therethrough which passage expands to an open
position when fluid pressure is applied to the body and
retracts upon itself into a closed position when pressure is
removed to thus seal the passage against fluid flow.
Subclass:
845
This subclass is indented under subclass 844. Valve wherein
the resilient body is a substantially flat plate-like member
having an expansible orifice formed therethrough.
Subclass:
846
This subclass is indented under subclass 844. Valve wherein
the resilient body has a fluid passage therethrough a portion
of which is substantially nondeformable, which passage
terminates in an expansible port at the point where the fluid
flows from the body.
Subclass:
847
This subclass is indented under subclass 846. Valve wherein
closing of the exit lip is effected or facilitated by an
additional force applying means.
Subclass:
848
This subclass is indented under subclass 846. Valve wherein
the fluid passage is provided with a laterally disposed
outlet port.
Subclass:
849
This subclass is indented under subclass 846. Valve wherein
the expansible port is formed as a plurality of cuts in the
resilient body.
(1) Note. The cuts may intersect one another thus forming
multiple exit flaps or the cuts may be spaced from and open
independently of one another.
Subclass:
850
This subclass is indented under subclass 846. Valve wherein
the nondeformable portion of the passage has a rigid tubular
supporting element inserted therein.
Subclass:
851
This subclass is indented under subclass 843. Valve wherein
the resilient material valve includes an elongated member
which is confined or retained at each of its ends to thus
limit deformation to its central region.
Subclass:
852
This subclass is indented under subclass 843. Valve wherein
a portion of the resilient member is fixed to a substantially
rigid mounting means about which at least part of the
remainder of the resilient member bends or distorts towards
or away from contact with a valve seat with which the
resilient member coacts to produce a desired valving action
upon variations in fluid pressure.
Subclass:
853
This subclass is indented under subclass 852. Valves in
which the resilient member is an axially extending tubular
element which flexes radially with respect to its mounting
means.
Subclass:
854
This subclass is indented under subclass 852. Valves in
which the resilient member is secured at its center and the
periphery flexes about said securement.
Subclass:
855
This subclass is indented under subclass 852. Valve wherein
the resilient member is fixed at a single location along its
periphery and wherein the free portion of the member bends
about this location to produce the desired valving action.
Subclass:
856
This subclass is indented under subclass 855. Valve wherein
an abutment is located in close proximity to said resilient
member to restrict the travel of said member as it moves from
a closed to an open position.
Subclass:
857
This subclass is indented under subclass 855. Valve wherein
a resilient, energy storing, bias means is provided.
Subclass:
858
This subclass is indented under subclass 855. Valve which,
in addition to the restoring force of the resilient material
is provided with a mass of material which due to the force of
gravity acts to bias the resilient member towards its valve
seat.
Subclass:
859
This subclass is indented under subclass 852. Valve wherein
said valve member is in the form of a resilient disc which is
secured around its entire periphery.
Subclass:
860
This subclass is indented under subclass 843. Valve wherein
the resilient member is in the form of a ring which is
carried by but not secured to a mounting and which either
slides along or freely expands with respect to the mounting.
(1) Note. The ring does not need to be continuous, thus
valves employing expansible or contractable split rings will
be found herein.
Subclass:
861
With flow control means for branched passages:
This subclass is indented under subclass 561. System wherein
an array of branched fluent material flow passages is
provided with means to stop or regulate the flow in more than
one branch, which means may comprise (1) multiple valves, (2)
a deflector or valve located at a junction and operable to
open one passage and close or restrict the flow from the
other, or (3) a single valve controlling one outlet flow
path, the hydrostatic characteristics of the system being
such that the entire flow passes through the valved line when
it is fully open.
(1) Note. See the class definition, Lines With Other
Classes (2) Plural Valves, and Subclass References to the
Current Class 4 for search notes of plural valves and their
actuators.
SEE OR SEARCH THIS CLASS, SUBCLASS:
255 for plural tanks or compartments having parallel
outflows.
280 and 299, for hydrants having plural risers and/or
outlets.
594 for distribution systems comprising two or more
noncommunicating flow paths.
602 for distribution systems having plural inflows and a
single outflow.
625 for valves and valve actuation involving multiway valve
units in which there is a pattern or special flow relation,
and see the search notes thereto.
SEE OR SEARCH CLASS:
222, Dispensing, 482 for dispensers having plural openings
or discharge guides with discharge control means for plural
outlets.
Subclass:
862
With common valve operator:
This subclass is indented under subclass 861. Systems
wherein a plurality of branches in the branched array are
each provided with a separate flow control means and means to
coordinate the actuation of the separate flow control means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
595 for systems having plurally noncommunicating flow paths
with a common valve operator.
601.01-601.12, for systems dividing into parallel flow lines
then recombining including valves having a common operator
therefor.
607 for systems having a multiple inlet having a flow
control valve in each inlet having a common valve operator.
631 for valves of the cyclical type, and see the search
notes thereto.
SEE OR SEARCH CLASS:
222, Dispensing, 485 for interconnected or integral flow
controllers for plural dispenser outlets, and subclasses 488+
for controllers for a single passage into which plural
passages merge.
Subclass:
863
For valve having a flexible diaphragm valving member:
This subclass is indented under subclass 862. Systems in
which at least one flow control means comprises a pliant
member which flexes relative to a rigid surface to control
flow therebetween.
Subclass:
864
For valve having a ball head:
This subclass is indented under subclass 862. Systems
comprising at least one flow control means which employs a
substantially spherical member to regulate flow.
Subclass:
865
With gearing:
This subclass is indented under subclass 862. Systems
wherein the means to coordinate the actuation of the flow
control means includes relatively movable toothed members
which transmit motion to the flow control means by meshing of
the teeth during travel of the members.
Subclass:
866
Threaded actuator:
This subclass is indented under subclass 862. Systems
wherein the means to coordinate the actuation of the flow
control means includes a member having a helical rib, which
member reciprocates as a result of rotary motion applied
thereto.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 248 for gear-actuated
valves, per se.
Subclass:
867
Pivoted or rotary motion converted to reciprocating valve
head motion:
This subclass is indented under subclass 862. System
comprising a flow control means in which swinging or turning
motion of a member is mechanically converted to rectilinear
movement of a flow control member.
Subclass:
868
Spring biased:
This subclass is indented under subclass 867. System wherein
a resilient mass is provided to urge either the flow control
means or coordinating means to a desired position.
Subclass:
869
Having fluid actuator:
This subclass is indented under subclass 862. System wherein
the coordinating means includes a hydraulic or pneumatic
motor.
Subclass:
870
With electrical actuation:
This subclass is indented under subclass 862. System wherein
the coordinating means includes means utilizing electrical
energy to effect actuation of a flow control means.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 129 for electrically
actuated valves, per se.
Subclass:
871
Spring biased:
This subclass is indented under subclass 862. System wherein
a resilient mass is provided to urge either the flow control
means or coordinating means to a desired position.
Subclass:
872
With valve or movable deflector at junction:
This subclass is indented under subclass 861. System wherein
a fluent material flow regulating means or fluent material
diverting means is provided at the junction of the inlet
branch with two or more outlet branches, the fluent material
flow regulating means or movable diverting means being
selectively operable to direct the effluent from the inlet
branch into an desired outlet branch or branches.
(1) Note. The deflector, when discharging directly to the
ambient space or atmosphere, is also considered an outlet
passage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
119.01 for downspouts having automatic means to shift the
flow between branches, especially subclass 120 for valves or
deflectors at the junction of a rain downspout in which the
valve or deflector is shifted in response to the collection
of a predetermined quantity of rainfall in an auxiliary
timing tank.
SEE OR SEARCH CLASS:
193, Conveyors, Chutes, Skids, Guides, and Ways, subclass 13,
14, 23, 28, 29, and 31 for switches and multiple point
discharge for chutes.
406, Conveyors: Fluid Current, 117 for a conveyor having
plural intakes; subclasses 155+ for a conveyor having plural
outlets; and subclasses 181+ for a flow diverter, divider, or
combiner, per se.
Subclass:
873
Movable deflector spout in lateral port:
This subclass is indented under subclass 872. System in
which an opening in the side wall of the fluent material flow
line provides a branched discharge line, there being provided
a pipe which may be moved into position in the flow line to
deflect the fluent material through the opening in the side
wall, the pipe being effective to guide or to conduct the
diverted fluent material to a point beyond the opening.
Subclass:
874
Valve or deflector is tubular passageway:
This subclass is indented under subclass 872. System in
which the fluent material flow control means or diverting
means comprises, at least in part, a movable tubular
switching passageway.
Subclass:
875
Pivoted valve or deflector:
This subclass is indented under subclass 872. System in
which fluent material flow control or diverting means swings
about an axis other than its axis of symmetry.
Subclass:
876
Rotary valve or deflector:
This subclass is indented under subclass 872. System in
which at least one fluent material flow control or diverting
means only rotates about its axis of symmetry.
Subclass:
877
Biased valve:
This subclass is indented under subclass 861. System in
which at least one of the flow passages is provided with a
fluent material flow control means which is urged by a
spring, gravity, or fluid pressure means either toward or
away from its seat.
Subclass:
878
Spring bias:
This subclass is indented under subclass 877. System wherein
a resilient mass is provided to urge the flow control means
to a desired position.
Subclass:
879
For valve having a ball head:
This subclass is indented under subclass 878. System wherein
fluent material flow control means employs a substantially
spherical member to regulate flow.
Subclass:
880
With threaded actuator:
This subclass is indented under subclass 878. System wherein
the means to actuate the fluent material flow control means
has a helical rib by which the actuating means reciprocates
as a result of rotary motion applied thereto.
Subclass:
881
Spring coaxial with valve:
This subclass is indented under subclass 878. System wherein
the axis along which the resilient mass is compressed is
coincident with the axis along which the fluent material flow
control means moves.
Subclass:
882
Biased open:
This subclass is indented under subclass 881. System wherein
the resilient means is provided to urge the flow control
means to an open position.
Subclass:
883
Single inlet with multiple distinctly valved outlets:
This subclass is indented under subclass 861. System having
two or more outlets or exhaust passageways connected to a
single inlet or admission passage, there being a separate,
distinct, and independently operable material flow regulating
means in each outlet.
SEE OR SEARCH THIS CLASS, SUBCLASS:
602 for system with plural inflow and a single outflow.
Subclass:
884
Sectional block structure:
This subclass is indented under subclass 861. System wherein
the flow passages are formed in modular pieces facilitating
assembly or disassembly of the array.
SEE OR SEARCH THIS CLASS, SUBCLASS:
269 for valves convertible by reassembling or by adding or
omitting a part.
Subclass:
885
With fluid actuator:
This subclass is indented under subclass 861. System in
which a fluent material flow regulating means is actuated, at
least in part, by a fluid pressure motive means.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 12 for fluid-actuated
valves, per se.
Subclass:
886
With threaded actuator:
This subclass is indented under subclass 886. System
comprising a fluent material flow regulating means having an
operator with a helical rib, which operator reciprocates as a
result of rotary motion applied thereto.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 213 for valves with
threaded actuators, per se.
Subclass:
887
Containing rotary valve:
This subclass is indented under subclass 861. System in
which a fluent material flow control means rotates about its
axis of symmetry.
SEE OR SEARCH THIS CLASS, SUBCLASS:
601.16-601.17, for systems dividing into parallel flow lines
then recombining having a rotary valve.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, 304 for rotary valves, per
se.
Subclass:
888
Combining by aspiration:
This subclass is indented under subclass 602. System in
which a fluid flowing from a first inlet flow line causes or
facilitates the flow of a fluid from a second inlet flow line
so that the fluids are combined prior to leaving the single
outlet or exhaust passage, the fluid flowing from the first
inlet flow line serves as the motivating or aspirating fluid
while the fluid in the second inlet flow line serves as the
aspirated fluid; whereby, the motivating or aspirating fluid
imparts energy to the aspirated fluid by the action of
entrainment.
(1) Note. In regard to the classification of an aspirator
between Class 417, Pumps, and this class (137), subclasses
888+, and aspirator in which the disclosed function is to mix
or combine together two or more fluids is classified in Class
137, whereas an aspirator in which the sole disclosed
function is to pump one fluid by means of entrainment with
another is classified in Class 417. In the case of dual
disclosed functions, if an aspirator has a disclosed function
of pumping one fluid by entraining it with another and a
disclosed function of mixing or combining together two or
more fluids to produce a mixture, the classification is in
Class 137.
SEE OR SEARCH THIS CLASS, SUBCLASS:
101.11 205.5, and 564.5, for mixing or combining of fluids in
which one fluid is added to another by means of differential
pressure existing along a main line which has a shunt line
leading to a reservoir containing a fluid to be added to the
main line downstream of the shunt line; many of these devices
may include an aspirating effect.
268 for devices including a holder for solid, flaky, or
pulverized material to be dissolved or entrained.
896 for mixing or combining of plural fluids by means other
than aspiration.
SEE OR SEARCH CLASS:
222, Dispensing, 129 for dispensers comprising plural
sources which may also have a common discharge, and
particularly indented subclasses 145.1+ for dispensers
comprising plural sources having a common discharge.
239, Fluid Sprinkling, Spraying, and Diffusing, 310, 335+,
337+, and 398+ for spraying devices having additional means
to promote mixing of a plurality of different streams.
261, Gas and Liquid Contact Apparatus, appropriate subclasses
for apparatus for mixing a liquid with a gas.
366, Agitating, appropriate subclasses for devices adapted to
promote mixing of plural fluent materials by means other than
aspiration.
417, Pumps, appropriate subclasses for aspirators having a
sole disclosed function of pumping of one fluid by
entrainment with another, and see Note (1) above.
Subclass:
889
Combining of three or more diverse fluids:
This subclass is indented under subclass 888. System wherein
the branched flow line has three or more inlets or admission
passages connected to the single outlet or exhaust passage;
and wherein the system includes three or more fluids, each
fluid having a characteristic which is diverse from or
different from the characteristic of at least two other of
the fluids such as different composition, different phase
(i.e., gas and liquid), different temperature, or different
viscosity.
(1) Note. All of the three or more diverse fluids do not
necessarily need to be flowing simultaneously; the system may
include means to selectively control one or more of the flow
paths.
Subclass:
890
Plural motivating fluid jets:
This subclass is indented under subclass 888. System in
which the fluid flowing from the motivating fluid inlet line
is divided into a plurality of streams prior to combining
with the aspirated fluid; or in which the motivating fluid
acts to entrain the aspirated fluid and then, the motivating
fluid again, or the combined motivating and aspirated fluid
stream acts to further entrain additional fluid to be
aspirated at a point downstream of the first entrainment.
Subclass:
891
Flow control by varying position of a fluid inlet relative to
entrainment chamber:
This subclass is indented under subclass 888. System wherein
at least one of the inlets or admission passages is movable
relative to the portion of the system in which the fluids are
entrained and combined so that, by altering the position of
the movable inlet relative to the entraining portion of the
system, the flow of one or more of the incoming fluids may be
controlled.
Subclass:
892
With selectively operated flow control means in inlet:
This subclass is indented under subclass 888. System
including means located in an inlet flow line or in an
admission passage to selectively control the flow of fluid
flowing from the inlet flow line into the portion of the
system in which the fluids are entrained and combined.
(1) Note. The means for selectively controlling flow in an
inlet flow line or admission passage may comprise control
means for venting the inlet flow line or admission passage,
as, for example, for allowing a portion of the motivating
fluid located upstream of the admission passage to escape
from the motivating fluid inlet line or for allowing air to
be admitted into the aspirated fluid inlet line.
Subclass:
893
Flow control means is located in aspirated fluid inlet:
This subclass is indented under subclass 892. System wherein
the means to selectively control the flow of fluid is located
in the aspirated fluid inlet flow line or in the aspirated
fluid admission passage so as to control the flow of
aspirated fluid from the aspirated fluid admission passage
into the entraining and combining portion of the system.
Subclass:
894
Single actuator operates flow control means located in both
motivating fluid and aspirated fluid inlets:
This subclass is indented under subclass 893. System wherein
additional means to selectively control the flow of fluid is
located in the motivating fluid inlet flow line or admission
passage so as to control the flow of motivating fluid from
the motivating fluid admission passage into the entraining
and combining portion of the system; and wherein a single,
selectively controlled actuator is operatively connected to
both the flow control means located in the aspirated fluid
inlet flow line or passage and to the flow control means
located in the motivating fluid inlet flow line or passage,
so that whenever the actuator is selectively operated, the
flow control means located in both the aspirated and
motivating fluid inlet flow lines or admission passages are
operated to alter the flows of the respective fluids into the
entraining and combining portion of the system.
Subclass:
895
With condition responsive valve:
This subclass is indented under subclass 888. System
including a movable valve connected to a flow line, which
valve is operated to move in response to a change in the
condition of the fluid located within the system.
Subclass:
896
With means to promote mixing or combining of plural fluids:
This subclass is indented under subclass 602. System
including means to promote admixing or combining together of
the fluids leaving the admission passages prior to discharge
from the single outlet so as to provide a single, combined,
or uniformly mixed output stream.
(1) Note. Mere plural inlets to a combining chamber is
insufficient for causing classification in this subclass.
The means to promote combining of plural fluids must include
structure for bringing the fluids into contact in a
particular manner such as baffles or other means to cause
turbulence, flow-shaping or fluid-guiding means to cause the
fluids to be combined in a particular manner, etc.
(2) Note. In regard to the classification of a system
having two or more inlets connected to a single outlet, which
system including means to promote "mixing" of two or more
fluids, classification in Class 366, Agitating, is proper if
the plural fluids to be mixed are liquids and the means to
promote mixing of the liquids is something other than an
aspirator. A mixing system is properly classified in this
class (137), either (a) in subclasses 888+ if the fluids
(including liquids) are mixed by aspiration, or (b) in these
subclasses 896+ if the fluids to be mixed are other than two
or more liquids. A system including means to promote
"combining" of two or more fluids, as opposed to means to
promote "mixing" of two or more fluids, is classifiable in
this class (137), subclasses 888+ or 896+ even if the fluids
are liquids since Class 366 requires a means to promote
"mixing" of the fluids.
SEE OR SEARCH THIS CLASS, SUBCLASS:
603 for faucet attachments wherein water from hot and cold
water faucets is mixed or combined to provide a single output
stream of intermediate temperature.
605 for mixing faucets for hot and cold water which do not
claim additional means to promote mixing.
888 for mixing or combining of plural fluids by aspiration
means wherein a fluid is mixed or combined with another by
the action of entrainment, and see the search notes under
subclass 888.
SEE OR SEARCH CLASS:
222, Dispensing, 129 for dispensers comprising plural
sources which may also have a common discharge, and
particularly indented subclasses 145.1+ for dispensers
comprising plural sources having a common discharge.
239, Fluid Sprinkling, Spraying, and Diffusing, 310, 335+,
337+, and 398+ for spraying devices having additional means
to promote mixing of a plurality of different streams.
261, Gas and Liquid Contact Apparatus, appropriate subclasses
for apparatus for mixing a liquid with a gas.
366, Agitating, appropriate subclasses for devices adapted to
promote mixing of plural fluent materials by means other than
aspiration, and see note (2) above.
Subclass:
897
With selectively operated flow control means:
This subclass is indented under subclass 896. System
including means located in a flow line, admission passage, or
the outlet passage to selectively control the flow of the
fluid in one or more of the flow lines.
Subclass:
898
Single actuator operates plural flow control means:
This subclass is indented under subclass 897. System wherein
there are a plurality of means to selectively control the
flow of fluid within the system, which means to control the
flow of fluid is located in any combination of two or more
locations including the flow lines, admission passages, or
the outlet passage; and wherein a single, selectively
controlled actuator is operatively connected to the plural
flow control means, so that whenever the actuator is
selectively operated, the plural flow control means are
operated to alter the flows of the fluids within the system.
Subclass:
899
Vehicle:
This subclass is indented under subclass 343. Apparatus in
which the casing, support, or protector is a vehicle or a
part thereof, which vehicle or part thereof supports and
enables movement of the fluid-handling device or part thereof
relative to means external to the fluid-handling device or
part thereof.
(1) Note. The term "vehicle" includes water, rail, and
airborne carriers as well as land vehicles.
(2) Note. In regard to the line between Class 137 and Class
239 (as specified in the class definition of Class 239, Lines
With Other Classes, Miscellaneous Class notes and Lines, Slow
Diffusers), the placement of documents within Class 137,
these subclasses (899+) and Class 239, subclasses 726+,
represents }an exception to the specified class line. This
exception to the line between Classes 137 and 239 relates
"only " to the placement of documents between subclasses 899+
of Class 137 and subclasses 726+ of Class 239. Specifically,
any document which discloses a portable, overhead type of
irrigating or other sprinkling apparatus, which is supported
upon vehicular means, which has some form of sprinkler or
other spray outlet means secured thereto for sprinkling or
spraying fluid onto a surface supporting the apparatus, and
which claims subject matter encompassed by the definitions of
Class 239, subclasses 726+, has been placed in the
appropriate subclass of Class 239, subclasses 726+,
regardless of whether or not a sprinkler or other spray
outlet means was specified in the claims.
SEE OR SEARCH THIS CLASS, SUBCLASS:
38 for movable systems controlled by the position or inertia
of the system, especially subclass 43 for tanks having means
for closing vents if the tank overturns.
125 for tank truck mounted plural siphons.
223 for tire filling chucks or stems.
267 for tank truck mounted plural tanks.
580 for transfer of fluid to a moving receiver by means
of a running joint.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, subclass 313
for vacuum cleaners installed in vehicles.
114, Ships, subclass 74 for tankers; and subclasses 232+ for
oil distributors for ships.
180, Motor Vehicles, appropriate subclasses, especially 54.1
for power plants.
222, Dispensing, 608 for ambulant dispensers, and see the
search notes to subclass 608.
239, Fluid Sprinkling, Spraying, and Diffusing, 726 for
portable, overhead-type of irrigating apparatus supported
upon vehicular means, and see the search notes to subclasses
726+, and see (2) Note above.
244, Aeronautics, subclass 136 for material discharging and
diffusing from aircraft.
280, Land Vehicles, appropriate subclasses, especially 830
for tanks or boilers associated with land vehicles.
291, Track Sanders, 3 for fluid delivery in track sanders.
Subclass:
899.1
Guided by means of track or guideway:
This subclass is indented under subclass 899. Apparatus
including rail means, guide wire means, or some other
predetermined and established pathway which constrains the
vehicle or a part thereof to be bodily movable along the rail
means, guide wire means, or other pathway.
Subclass:
899.2
Aerial or water-supported (e.g., airplane or ship, etc.):
This subclass is indented under subclass 899. Apparatus in
which the casing, support, or protector is either (a) an
aerial vehicle or part thereof, which aerial vehicle is
freely movable through the air, or (b) a buoyant vehicle or a
part thereof, which buoyant vehicle is buoyantly supported by
a body of water.
(1) Note. The buoyant vehicle may be submerged within the
body of water during use of the fluid-handling device
attached thereto or supported thereon, but must be also
capable of being buoyantly supported by a body of water.
Subclass:
899.3
With retractable or nonuse-positionable support wheel:
This subclass is indented under subclass 899. Apparatus in
which the vehicle or a part thereof comprises a wheel which
is positionable between an in-use supporting position and a
storage position, so that (a) in the in-use position, the
wheel supports and enables movement of the fluid-handling
device or part thereof relative to the means external to the
device, and (b) in the storage position, the wheel no longer
supports or enables movement of the fluid-handling device or
part thereof relative to the means external to the device.
Subclass:
899.4
Vehicle supports fluid compressor and compressed fluid
storage tank:
This subclass is indented under subclass 899. Apparatus in
which the fluid-handling device or a part thereof comprises
(a) a compressing means to induct and to compress an ambient,
compressible fluid, such that the resulting compressed fluid
is at a greater pressure than the ambient, uncompressed
fluid, and (b) a tank or receiver means, adapted to be
fluidly connected to the compressing means, to receive and
store the compressed fluid under a higher-than-ambient
pressure; and wherein both the compressing means and the tank
or receiver means are supported as a whole by and movable as
a whole by means of the vehicle or part thereof.
(1) Note. These fluid-handling devices are generally
ambulant air compressor units mounted upon wheeled trucks.
CROSS-REFERENCE ART COLLECTIONS
The documents in the following collections contain only
cross-references which have been placed without regard to
their original classification or to their claimed subject
matter and therefore are only representative of the art or
subject matter. Consequently, a complete search for art or
subject matter provided for here would require a review of
the higher portions of the classification schedule.
Subclass:
900
BUMPLESS MANUAL TO AUTOMATIC RELAYS:
This subclass is indented under the class definition. Art
collection drawn to bumpless manual to automatic relays.
Subclass:
901
BIASED BALL VALVES WITH OPERATORS:
This subclass is indented under the class definition. Art
collection drawn to biased ball valves with operators.
Subclass:
902
SLUSH PUMP CHECK VALVES:
This subclass is indented under the class definition. Art
collection drawn to slush pump check valves.
Subclass:
903
RUBBER VALVE SPRINGS:
This subclass is indented under the class definition. Art
collection drawn to rubber valve springs.
Subclass:
904
CUSHION CHECK VALVES:
This subclass is indented under the class definition. Art
collection drawn to cushion check valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315.33 for a check valve (e.g., non-return valve, etc.) with
assembling or disassembling means.
Subclass:
905
ROTARY VALVES FOR MULTIPLE GAS BURNERS:
This subclass is indented under the class definition. Art
collection drawn to rotary valves for multiple gas burners.
Subclass:
906
VALVES BIASED BY FLUID "SPRINGS":
This subclass is indented under the class definition. Art
collection drawn to valves biased by fluid "springs".
Subclass:
907
VACUUM-ACTUATED VALVES:
This subclass is indented under the class definition. Art
collection drawn to vacuum-actuated valves.
Subclass:
908
RESPIRATOR CONTROL:
This subclass is indented under the class definition. Art
collection drawn to respirator control.
Subclass:
909
MAGNETIC FLUID VALVE:
This subclass is indented under the class definition. Art
collection drawn to magnetic fluid valve.
Subclass:
910
DESTRUCTIBLE OR DEFORMABLE ELEMENT CONSTRUCTED OF SPECIFIC
MATERIAL:
This subclass is indented under the class definition. Art
collection drawn to destructible or deformable elements
constructed from a unique material to enable the element to
destruct under specified temperature or pressure
constraints.
Information Products Division -- Contacts
Questions regarding this report should be directed to:
U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231
tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov
Last Modified: 6 October 2000