![]() | FLUID HANDLING |
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SECTION I - 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.
SECTION II - 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
SECTION III - SUBCLASS REFERENCES TO THE CURRENT CLASS
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 | through 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). |
SECTION IV - 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, subclasses 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, subclasses 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, subclasses 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, subclasses 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). |
SECTION V - 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
![]() | PROCESSES: | ||||||||||||||
This subclass is indented under the class definition. Processes.
SEE OR SEARCH CLASS:
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![]() | With control of flow by a condition or characteristic of a fluid: | ||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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![]() | Mixing of plural fluids of diverse characteristics or conditions: | ||
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:
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![]() | Controlled by consistency of mixture: | ||||
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:
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![]() | Controlled by conductivity of mixture: | ||
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:
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![]() | Controlled by heat of combustion of mixture: | ||||
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:
SEE OR SEARCH CLASS:
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![]() | Controlled by pressure: | ||
This subclass is indented under subclass 3. Processes in which the determined condition or characteristic
is a pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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![]() | For producing uniform flow: | ||||||
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:
SEE OR SEARCH CLASS:
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![]() | For producing proportionate flow: | ||||||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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![]() | By speed of fluid: | ||
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:
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![]() | For regulating boiler feed water level: | ||||||||
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:
SEE OR SEARCH CLASS:
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![]() | By fluid pressure: | ||||
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:
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![]() | Carbonated beverage handling processes: | ||||||
This subclass is indented under subclass 1. Processes for handling potable liquids which are impregnated
with gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | Affecting flow by the addition of material or energy: | ||||||||||||||||||
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:
SEE OR SEARCH CLASS:
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![]() | Involving pressure control: | ||||
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:
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![]() | 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.
Figures 1, 2, and 3: A typical example of the subject mattershowing 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 - Clampingscrew; K - Wrench; L - Draw spout. SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | 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 1: A typical example of the subject matter. A - Firehydrant; B - Nozzle; C - Cap; D - Jet of water; E - Nozzle expanderbolted 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:
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![]() | 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.
A typical example of the subject matter. Figure 1: A - Gasmeter; B - Outlet gas supply; C - Control valve; D - Regulator;E - Riser nipple; F - Relief valve. Figure 2: A - Water meter; B - Backflow prevention valve;C - Meter pit; D - Coaxial fitting; E - Fluid conduit; F - Flowcontrol valve; G - Fittings to facilitate meter mounting. SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | 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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | 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 1: A typical example of the subject matter. Brake cylinder"A" is filled with brake liquid "B". Inlet valve "C" is providedfor introduction of new brake liquid. The outlet valve "D" is forremoval of spent brake liquid due to purging. SEE OR SEARCH CLASS:
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![]() | 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 1: A typical example of the subject matter. A - Seatassembly; B - Valve seat; C - Replaceable gasket; D - Representswashing fluid being flushed; E, F - Path of washing fluid throughslots of gasket. SEE OR SEARCH THIS CLASS, SUBCLASS:
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![]() | 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.
SEE OR SEARCH CLASS:
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![]() | 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.
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:
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![]() | 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.
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 2: PIPE JOINT: A - Pipe Joint; B, C - Pipe; D - Internalshelf; E - Connector; F - Fitting. SEE OR SEARCH CLASS:
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![]() | HIGHSPEED FLUID INTAKE MEANS (E.G., JET ENGINE INTAKE): | ||||||
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.
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![]() | 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.
A typical example of the subject matter. Figure 1: INJECTINGSEALANT: A - Leak repair clamp; B - Pipe line; C - Cavity for receivingsealant; D - Passageway for sealant injection; E - Stopper plug. Figure 2: FLEXIBLE PATCH: A - Sealing leak; B - Pipe; C- Sealing patch. SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | 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 1: A typical example of the subject matter. A - Concretetube or pipe; B - Tensioned wires; C - Cement coating; D - Sealinggland; 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 - Cuttingmachine shaft; V - Centering drill. SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | 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 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 - Allenwrench; H - Passageway; J - Valve. SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | 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 1: A typical example of the subject matter. A - Cutterassembly; 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:
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![]() | 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 1: A typical example of the subject matter. A - Pipemain; B - Resilient plug (inflatable); C - Inner rod; D - Saddle;E - Opening in pipe; F - Pipe plug; G - Stopper rod; H - Intermediaterod; J - U-bolt; K - Service tree. SEE OR SEARCH CLASS:
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![]() | 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 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:
SEE OR SEARCH CLASS:
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![]() | 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 1: A typical example of the subject matter. A - Valveassembly; B - Interior wall; C - Distribution pipe; D - Tank; E- Tank inlet; F - Main valve; G - Water inlet line; H - Flexibletube; J - Fittings. SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | 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 1: A typical example of the subject matter. A - Valvebody; 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:
SEE OR SEARCH CLASS:
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![]() | 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 1: A typical example of the subject matter. A - Controlvalve; B - Valve stem; C, D, E, F - Lever and link mechanism; G- Piston; H - Servomechanism; J - Actuator; K - Manifold to controlactuator. SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | With condition responsive control means: | ||||
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:
SEE OR SEARCH CLASS:
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![]() | 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 1: A typical example of the subject matter. A - Valvebody; 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:
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![]() | 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 1: A typical example of the subject matter. A - Valveseat; B - Upper valve seat; C - Lower valve seat; D - Packings;E, F - Retainers; G, H -Bearing packings; J - Valve box; K - Valverod; L - Packing gland; M - Gland screw; N - Ball handle; P - Capnut; Q - Lock nut; R, S, T - Fluid passages. SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | 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 1: A typical example of the subject matter. A - Gatevalve; B - Valve body; C - Passageway; D -Valve gate; E - Valveseats; F - Valve stem; G - Valve yoke; H - Valve handle. SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | 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 1: A typical example of the subject matter. A - Valveassembly; B, C - Inlet and outlet in axial alignment with each other;D - Cylindrical plug assembly with valve assembly "A"; E - Upperactuating 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:
SEE OR SEARCH CLASS:
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![]() | 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 1: A typical example of the subject matter. A - Throttlevalve 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:
SEE OR SEARCH CLASS:
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![]() | 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 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 suchthat downward articulation of lever arm "E" causes valve "D" toopen so that water can communicate between port "G" and the fill tube"H". SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | CONTROL BY CHANGE OF POSITION OR INERTIA OF SYSTEM: | ||||||||||||||||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | With second control: | ||||||
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.
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![]() | Position relative body of water (e.g., marine governors): | ||||||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | Float controlled: | ||
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:
| |||
![]() | Pressure or head controlled: | ||
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:
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![]() | Vent opening or closing on tipping container: | ||||||
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:
SEE OR SEARCH CLASS:
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![]() | By shifting of liquid level: | ||||||
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:
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![]() | By pendulum or swinging member: | ||
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:
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![]() | With servo connection to valve: | ||
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:
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![]() | SPEED RESPONSIVE VALVE CONTROL: | ||||||||||
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.
SEE OR SEARCH CLASS:
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![]() | Acceleration responsive valve control: |
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. | |
![]() | With manual valve control: | ||||||||||
This subclass is indented under subclass 47. Control systems including additional means whereby the valve
or valves may be manually operated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | Speed change and excess speed valve control: | ||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
![]() | With other condition responsive valve control: | ||
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:
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![]() | Governor drive failure responsive: | ||||||
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.
SEE OR SEARCH CLASS:
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![]() | Centrifugal mass type (exclusive of liquid): | ||
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:
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![]() | With multiple valves: | ||
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.
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![]() | Periodically actuated valve: | ||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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![]() | Rotating valve and rotating governor: | ||
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:
| |||
![]() | Excess speed responsive: | ||||||
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:
SEE OR SEARCH CLASS:
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![]() | With fluid servo-motor: | ||||||
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:
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![]() | FREEZE CONDITION RESPONSIVE SAFETY SYSTEMS: | ||||||||||||||||||||||||
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:
SEE OR SEARCH CLASS:
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![]() | With freeze waste: | ||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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![]() | Stop and waste: | ||||
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:
| |||||
![]() | Low temperature responsive drains: | ||||
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:
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![]() | COMBUSTION FAILURE RESPONSIVE FUEL SAFETY CUT-OFF FOR BURNERS: | ||||||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | Thermo-electric: | ||||
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:
| |||||
![]() | 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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
| |||||||||||
![]() | 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:
SEE OR SEARCH CLASS:
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![]() | 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. | |
![]() | 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). | |
![]() | 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. | |
![]() | 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. | |
![]() | 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. | |
![]() | 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. | |
![]() | 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. | |
![]() | Rupture disc: | ||||
This subclass is indented under subclass 68.11. Subject matter where the destructible element is a diaphragm
or seal that holds fluid.
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![]() | 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). | |
![]() | 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.
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![]() | 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. | |
![]() | 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. | |
![]() | 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. | |
![]() | 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. | |
![]() | 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. | |
![]() | 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. | |
![]() | 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. | |
![]() | Movable knife or cutter: |
This subclass is indented under subclass 68.29. Subject matter wherein the piercing device is positionable. | |
![]() | 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. | |
![]() | 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.
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![]() | 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.
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![]() | Heat destructible or fusible: | ||||||||||||||
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).
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![]() | With second sensing means: | ||||
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.
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![]() | In fluid flow path: | ||||
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.
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![]() | Safety cut-off: | ||||
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.
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![]() | With heater for destructible or fusible element: | ||||||
This subclass is indented under subclass 75. Apparatus which includes a heating means for the fusible
or heat destructible element.
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![]() | With external closing means: | ||||||
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.
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![]() | 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.
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![]() | 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. | |
![]() | 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. | |
![]() | 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. | |
![]() | 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. | |
![]() | Temperature: | ||||||||||
This subclass is indented under subclass 78.5. Apparatus which controls a fluid flow in response to variations
of temperature in the surrounding atmosphere.
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![]() | With additional diverse control: | ||
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.
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![]() | Pressure: | ||||||
This subclass is indented under subclass 78.5. Apparatus in which a fluid flow is controlled in response
to variations of atmospheric pressure.
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![]() | 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. | |
![]() | PRESSURE MODULATING RELAYS OR FOLLOWERS: | ||||||||||||
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.
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![]() | Jet control type: | ||||||
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.
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![]() | Plural series units: |
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. | |
![]() | With counter-balancing pressure feedback to the modulating device: |
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. | |
![]() | With counter-counter balancing pressure feedback: |
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. | |
![]() | 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.
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![]() | 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.
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![]() | 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. | |
![]() | 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.
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![]() | 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. | |
![]() | 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. | |
![]() | Mixture condition maintaining or sensing: | ||
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.
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![]() | Dividing and recombining flow: | ||||
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.
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![]() | By specific gravity: | ||
This subclass is indented under subclass 88. Systems in which the condition maintained or sensed is specific
gravity.
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![]() | By viscosity or consistency: | ||||||
This subclass is indented under subclass 88. Systems in which the condition maintained or sensed is viscosity
or consistency.
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![]() | By optical or chemical property: | ||||||||||
This subclass is indented under subclass 88. Systems in which the condition maintained or sensed is an
optical or chemical property.
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![]() | Fuel controlled by boiler or water system condition: | ||||||
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.
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![]() | Self-proportioning flow systems: | ||||||||||||||
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.
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![]() | Interconnected flow displacement elements: | ||||
This subclass is indented under subclass 98. Systems in which the proportioning or correlating means
includes mechanically interconnected flow displacement elements.
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![]() | Movable trap chamber: | ||||
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.
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![]() | Flow comparison or differential response: | ||||
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.
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![]() | Flow dividers (e.g., reversely acting controls): | ||||||
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.
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![]() | Main line flow displaces or entrains material from reservoir: |
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. | |
![]() | With electrical controller: | ||
This subclass is indented under subclass 100. Subject matter comprising an electrical controller responsive
to the sensing means.
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![]() | Flow displacement element actuates electrical controller: |
This subclass is indented under subclass 98. Subject matter comprising an electrical controller responsive to a flow displacement element. | |
![]() | Liquid level response: | ||
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.
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![]() | Float controlled weir or valve: |
This subclass is indented under subclass 101.25. Subject matter wherein a weir or valve is responsive to the level sensing means. | |
![]() | Swinging outlet pipe controller: | ||
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.
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![]() | With measuring type discharge assistant: | ||
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.
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![]() | Supply and exhaust type: | ||||||||
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.
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![]() | Vacuum or suction pulsator type (e.g., milking machine): | ||||||
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).
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![]() | With trip linkage or snap action: | ||
This subclass is indented under subclass 103. Apparatus which include a snap acting or trip linkage in
the control system.
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![]() | With pulsation responsive pilot valve: | ||||
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.
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![]() | Reversing or 4-way valve systems: | ||||
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.
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![]() | Waste responsive to flow stoppage: | ||||
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.
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![]() | Self-controlled branched flow systems: | ||||||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
![]() | Dividing and recombining: | ||||||
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.
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| |||||||
![]() | Plural inflows: | ||||||||||
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.
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![]() | Alternate or successive inflows: |
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. | |
![]() | Control by depletion of source: | ||||
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.
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![]() | One inflow supplements another: | ||
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.
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![]() | 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.
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![]() | 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:
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![]() | 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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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![]() | 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.
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![]() | 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. | |
![]() | 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:
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![]() | 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.
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![]() | 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. | |
![]() | 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.
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![]() | 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. | |
![]() | 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.
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![]() | 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. | |
![]() | 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:
| |||
![]() | 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.
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![]() | 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. | |
![]() | 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:
| |||
![]() | 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. | |
![]() | 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. | |
![]() | 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:
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![]() | 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.
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![]() | 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.
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![]() | 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.
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![]() | 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:
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![]() | 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. | |
![]() | 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. | |
![]() | 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. | |
![]() | 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. | |
![]() | 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. | |
![]() | With pressure reducing inlet valve: | ||
This subclass is indented under subclass 115. Devices with a correlated fluid pressure responsive regulator
or pressure reducing valve controlling the inlet branch.
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![]() | Relief port through common sensing means: |
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. | |
![]() | 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:
| |||||||||
![]() | 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.
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![]() | 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.
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![]() | 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:
| |||
![]() | 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:
| |||
![]() | 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:
| |||||
![]() | 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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||||
![]() | 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:
| |||||
![]() | 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:
| |||||
![]() | 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. | |
![]() | 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.
| |||
![]() | 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. | |
![]() | 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:
| |||||
![]() | 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. | |
![]() | 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:
| |||||
![]() | 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. | |
![]() | 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:
| |||
![]() | Control by filling auxiliary gravitating or float operating tank: | ||||
This subclass is indented under subclass 119.01. 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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
![]() | Control by filling outlet tank or receiver: | ||||||||
This subclass is indented under subclass 119.01. 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:
SEE OR SEARCH CLASS:
| |||||||||
![]() | Float controlled: | ||
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:
| |||
![]() | SIPHONS: | ||||||||||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||
![]() | Plural: |
This subclass is indented under subclass 123. Apparatus including a plurality of siphons. | |
![]() | Tank truck mounted: | ||||
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:
| |||||
![]() | Sequentially discharging in parallel: | ||
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:
| |||
![]() | From plural tanks: | ||
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:
| |||
![]() | Main siphon with auxiliary starting, stopping or resetting siphon: | ||||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
![]() | Sinking or bucket-type float operated main siphon, float emptying auxiliary siphon: | ||||
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:
| |||||
![]() | With discharge-controlling receiver: | ||||||||
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:
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| |||||||||
![]() | With float: | ||||
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:
| |||||
![]() | Periodic or accumulation responsive discharge: | ||||||
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:
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| |||||||
![]() | With manual control: | ||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
![]() | Control by filling auxiliary tank: | ||
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:
| |||
![]() | Float-operated inlet to siphon: | ||
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:
| |||
![]() | Release of trapped air: | ||||||
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:
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| |||||||
![]() | Through float-operated vent: | ||||||||
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:
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| |||||||||
![]() | Through liquid trap seal: | ||
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:
| |||
![]() | Auxiliary liquid trap seal: |
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. | |
![]() | With strainer, filter, separator or sediment trap: | ||||
This subclass is indented under subclass 123. Apparatus combined with a strainer, filter, separator or
sediment trap.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||
![]() | With recorder, register, signal, indicator or inspection window: | ||
This subclass is indented under subclass 123. Apparatus combined with a recorder, register, signal, indicator
or inspection window.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||
![]() | With flow starting, stopping or maintaining means: | ||||||||
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:
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| |||||||||
![]() | Siphon venting or breaking: | ||||||
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:
| |||||||
![]() | With leakage or entrained air removal: | ||||
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:
| |||||
![]() | Pressure applied to liquid in supply chamber: | ||||||||||
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:
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| |||||||||||
![]() | Plunge or immersion starting: |
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. | |
![]() | Pump or liquid displacement device for flow passage: | ||||||
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:
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| |||||||
![]() | Piston: | ||
This subclass is indented under subclass 147. Apparatus in which the pump includes a piston.
SEE OR SEARCH CLASS:
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![]() | Co-axial within flow passage: |
This subclass is indented under subclass 148. Apparatus in which the piston is moved in the flow passage of the siphon. | |
![]() | Collapsible bulb: | ||
This subclass is indented under subclass 147. Apparatus in which the pump comprises a collapsible bulb.
SEE OR SEARCH CLASS:
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![]() | Siphon inlet movable to and from seat: |
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. | |
![]() | With valve or closure in-flow passage: | ||||
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:
| |||||
![]() | With means for mounting and/or positioning relative to siphon chamber: | ||
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:
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![]() | Elements: | ||
This subclass is indented under subclass 123. Apparatus comprising the siphon passage forming means, per
se.
SEE OR SEARCH CLASS:
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![]() | DIVERSE FLUID CONTAINING PRESSURE SYSTEMS: | ||||||||||||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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![]() | Gas lift valves for wells: | ||
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:
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![]() | Gas pressure discharge of liquids feed traps (e.g., to boiler): | ||||||||||||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||||||||
![]() | Gas pressure controlled by amount of liquids in boiler or discharge receiver: | ||||||||
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:
SEE OR SEARCH CLASS:
| |||||||||
![]() | Pressure connection at liquid level in boiler or discharge receiver: | ||
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:
| |||
![]() | Gas pressure controlled by amount of liquid in trap: | ||
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:
| |||
![]() | Plural trap chambers: | ||
This subclass is indented under subclass 159. Feed-traps which include a plurality of trap chambers.
| |||
![]() | Gravitating: | ||||
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:
SEE OR SEARCH CLASS:
| |||||
![]() | Gravitating vessel: | ||||
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:
| |||||
![]() | Sinking or bucket type float: | ||
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:
| |||
![]() | Pivoted vessel with fluid passage through pivot: |
This subclass is indented under subclass 162. Feed-traps wherein the vessel is pivoted and a fluid passage is provided through the pivot. | |
![]() | Float responsive: | ||||
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:
| |||||
![]() | Liquid control valve positively actuated: | ||||
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.
| |||||
![]() | Gas condensing type: |
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. | |
![]() | Gas inlet and outlet valves unitary: | ||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
![]() | Gas pressure controlled by manual or cyclic means: | ||
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:
| |||
![]() | Movable trap chamber: | ||||
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:
| |||||
![]() | Foam control in gas charged liquids: | ||||||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
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| |||||||||
![]() | Level or pressure responsive: | ||||
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:
SEE OR SEARCH CLASS:
| |||||
![]() | Separate handling of foam: | ||||||||
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.
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| |||||||||
![]() | With conditioning trap or chamber: | ||||||||
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:
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| |||||||||
![]() | Recarbonation: | ||||||
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:
SEE OR SEARCH CLASS:
| |||||||
![]() | With trap or chamber by-pass: | ||||||
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:
SEE OR SEARCH CLASS:
| |||||||
![]() | Fluid separating traps or vents: | ||||||||||||||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | Liquids separated from liquid: | ||||||
This subclass is indented under subclass 171. Separating traps wherein the diverse fluids are liquids
of different specific gravity.
SEE OR SEARCH CLASS:
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![]() | Plural discriminating outlets for diverse fluids: | ||
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:
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![]() | Common actuator for control valves: | ||||||||
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:
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![]() | Choke or restricted passage gas bleed: | ||||||
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.
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| |||||||
![]() | From above liquid level: |
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. | |
![]() | Discriminating outlet for liquid: | ||||||
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:
SEE OR SEARCH CLASS:
| |||||||
![]() | With alternately operated inlet and outlet valves: | ||||||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | With non-discriminating gas vent or liquid discharge: | ||||
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:
| |||||
![]() | Abnormal pressure responsive liquid blow-off or drain: | ||
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:
| |||
![]() | Manual control: | ||
This subclass is indented under subclass 179. Separating traps wherein the nondiscriminating fluid discharge
is manually controlled.
| |||
![]() | With auxiliary inlet or by-pass valve: | ||||
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:
| |||||
![]() | With fluid responsive valve: | ||||
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:
SEE OR SEARCH CLASS:
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![]() | Successively opened valves: | ||||||
This subclass is indented under subclass 183. Separating traps having a plurality of successively opened
liquid outlet valves.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
![]() | Gas collecting float (e.g., inverted bucket): | ||
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:
| |||
![]() | Downstream from valve: |
This subclass is indented under subclass 185. Separating traps wherein the float is located downstream from the valve. | |
![]() | Level responsive: | ||||||
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:
SEE OR SEARCH CLASS:
| |||||||
![]() | Weight or pressure: | ||
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:
| |||
![]() | Gravitating vessel: | ||||
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:
| |||||
![]() | Sinking or bucket type float: | ||
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:
| |||
![]() | Servo-control: | ||||||
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:
SEE OR SEARCH CLASS:
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![]() | Float: | ||||
This subclass is indented under subclass 187. Separating traps wherein the level responsive means is a
float.
SEE OR SEARCH THIS CLASS, SUBCLASS:
SEE OR SEARCH CLASS:
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![]() | With main line gas outlet from trap chamber: | ||||
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:
| |||||
![]() | With outlet extending above liquid in trap: | ||||||
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:
SEE OR SEARCH CLASS:
| |||||||
![]() | Servo-control: | ||||||
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:
SEE OR SEARCH CLASS:
| |||||||
![]() | With pressure balanced outlet valve: | ||
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:
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![]() | Discriminating outlet for gas: | ||||||||||||||||
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:
SEE OR SEARCH CLASS:
| |||||||||||||||||
![]() | With reverse flow stop or pressure regulating valve: | ||
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:
| |||
![]() | Fluid sensing valve: | ||||
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:
| |||||
![]() | With vaporized liquid stop: |
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. | |
![]() | With separate return for condensate: | ||
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:
| |||
![]() | Float responsive: | ||||
This subclass is indented under subclass 199. Separating traps wherein the valve is responsive to a float
member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||
![]() | With liquid emptying means: | ||||||
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.
SEE OR SEARCH THIS CLASS, SUBCLASS:
| |||||||
![]() | Self-emptying: | ||||
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.
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![]() | Liquid filling by evacuating container: | ||||||||||
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.
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![]() | Main line flow displaces additive from shunt reservoir: | ||||
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.
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![]() | Gas pressure storage over or displacement of liquid: | ||||||||||||
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.
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![]() | Surge suppression: | ||||||
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.
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![]() | With return of liquid to supply: | ||||
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.
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![]() | Plural units: | ||
This subclass is indented under subclass 206. Apparatus wherein a plurality of similarly functioning gas
pressure over liquid units are provided.
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![]() | With gas maintenance or application: | ||||||
This subclass is indented under subclass 206. Apparatus wherein means are provided to maintain or apply
the gas pressure over or to the liquid.
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![]() | Gas carried by or evolved from liquid: | ||
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.
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![]() | Gas injectors: | ||
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.
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![]() | Gas injected by liquid pressure or flow: | ||
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.
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![]() | Unitary mounting for gas pressure inlet and liquid outlet: | ||||||
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.
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![]() | With liquid level responsive gas vent or whistle: | ||||||||||||||
This subclass is indented under subclass 206. Apparatus wherein a gas vent or whistle is opened in response
to a predetermined liquid level.
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![]() | Combined high and low level responsive: | ||
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.
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![]() | BACK FLOW PREVENTION BY VACUUM BREAKING (E.G., ANTI-SIPHON DEVICES): | ||||||||||||||
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.
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![]() | Air vent in liquid flow line: | ||||
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.
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![]() | With liquid seal in liquid flow line: | ||||
This subclass is indented under subclass 216. Apparatus including a liquid seal means in the liquid flow
line.
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![]() | Automatic valve in vent line: | ||
This subclass is indented under subclass 216.1. Subject matter including an automatic valve in the vent
line.
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![]() | Valved: | ||||||
This subclass is indented under subclass 216. Apparatus wherein the air vent is provided with a valve.
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![]() | With co-acting valve in liquid flow path: | ||
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.
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![]() | LARNER-JOHNSON TYPE VALVES; I.E., TELESCOPING INTERNAL VALVE IN EXPANDED FLOW LINE SECTION: | ||||||||||||||||
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.
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![]() | Line condition change responsive: | ||||
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.
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![]() | Internal servo-motor with internal pilot valve: | ||
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.
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![]() | Pilot controlled passage in nose or needle: | ||
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.
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![]() | INFLATABLE ARTICLE (E.G., TIRE FILLING CHUCK AND/OR STEM): | ||||||||||||||||
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.
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![]() | With pressure-responsive pressure-control means: | ||||||
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.
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| |||||||
![]() | Pulsating: |
This subclass is indented under subclass 224. Devices wherein the fluid is dispensed in successive charges until the predetermined pressure is reached. | |
![]() | Diaphragm, bellows or expansible tube: | ||||||
This subclass is indented under subclass 224. Apparatus having a diaphragm, bellows or expansible tube
as the pressure responsive means.
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![]() | Co-axial inflation and relief valves: | ||||||||||
This subclass is indented under subclass 224. Apparatus having inflation and relief valves on a common
axis.
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![]() | With gauge or indicator: | ||||||||||
This subclass is indented under subclass 223. Apparatus having a fluid pressure gauge or indicator combined
therewith.
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![]() | With deflating means: | ||||
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.
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![]() | Selectively connected: |
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. | |
![]() | Stem attached relief valve: | ||||||||||
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.
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![]() | With coupling means: | ||||||||||
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.
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![]() | With cap: | ||||||
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.
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![]() | Valve actuating, assembling or locking means on cap: | ||||||
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.
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![]() | Valve manually seated: | ||
This subclass is indented under subclass 233. Apparatus in which the valve which is actuated, locked or
assembled is seated by manual manipulation.
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![]() | Removable valve head and seat unit (valve insides): | ||
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.
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![]() | WITH VEHICLE GUIDE OR SUPPORT, E.G., SERVICE STATION: | ||||||||||||||||
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.
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![]() | DISTRIBUTION SYSTEMS INVOLVING GEOGRAPHIC FEATURES: | ||||||||||||
This subclass is indented under the class definition. Fluid handling systems including or specifically related
to a particular geographic feature, e.g., a hill, river, ocean shore,
city street, etc.
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![]() | WITH CLEANER, LUBRICATION ADDED TO FLUID OR LIQUID SEALING AT VALVE INTERFACE: | ||||||||||||||||
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.
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![]() | Cleaning or steam sterilizing: | ||||||||||||||||||||
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.
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![]() | Reverse fluid flow: | ||||||||
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.
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![]() | With separate material addition: | ||||||||
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.
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![]() | Steam sterilizing: | ||||||
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.
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![]() | Mechanical cleaning: | ||||||||||
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.
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![]() | Valve grinding motion of valve on seat: | ||||||||||
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.
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![]() | Concentric stem: |
This subclass is indented under subclass 243. Devices in which the actuator is made up of an axial rod mounted within a sleeve. | |
![]() | Spring pressed: |
This subclass is indented under subclass 243. Devices provided with a spring which permits regrinding of the valve head on its seat. | |
![]() | Lost motion permits grinding: | ||
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.
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![]() | With swivel-preventing means: |
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. | |
![]() | Nut releasable from body and/or stem: | ||
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.
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![]() | With independent grinding actuator: |
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. | |
![]() | Separable: |
This subclass is indented under subclass 243.6. Devices in which the grinding means is normally removed from the valve. | |
![]() | Cleaning member reciprocates in passage: | ||
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.
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![]() | By-pass cleaning: | ||||
This subclass is indented under subclass 244. Systems in which the reciprocating member cleans a branch
channel.
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![]() | Independent actuation: |
This subclass is indented under subclass 244. Devices wherein the means to actuate the cleaning means is independent of the valve actuator. | |
![]() | Liquid supplied at valve interface: | ||||||||
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.
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![]() | Plural feed: |
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. | |
![]() | Line pressure feed: |
This subclass is indented under subclass 246. Valves wherein line pressure is used to feed the sealing liquid. | |
![]() | Feed by or with actuation: |
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. | |
![]() | Loss control: |
This subclass is indented under subclass 246. Valves having means to control or prevent the loss of sealing means to the line flow. | |
![]() | Screw feed: |
This subclass is indented under subclass 246. Valves having a screw means (e.g., screw fed plunger) for feeding the fluid. | |
![]() | With check valve: |
This subclass is indented under subclass 246.15. Valve having check valve means in the lubrication or sealing system. | |
![]() | Excess relief: |
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. | |
![]() | Jacking: |
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. | |
![]() | Jacking: | ||
This subclass is indented under subclass 246.15. Valves wherein the lubrication pressure lifts the valve
from its seat.
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![]() | Seating: |
This subclass is indented under subclass 246.15. Valves wherein the lubrication pressure aids in seating of the valve. | |
![]() | Spring biased piston feed: |
This subclass is indented under subclass 246. Valves wherein the lubricant feed means is a spring biased piston. | |
![]() | External pressure: |
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. | |
![]() | Gravity or capillary feed: |
This subclass is indented under subclass 246. Valves wherein the lubricant flows by gravity or by capillarity. | |
![]() | WITH LIQUID VALVES OR LIQUID TRAP SEALS: | ||||||||||||||
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.
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![]() | Liquid seal in liquid flow line; flow liquid forms seal: | ||||||||||
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.
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![]() | Valves: |
This subclass is indented under subclass 247.11. Apparatus having a valve in the liquid flow line in or adjacent to the seal. | |
![]() | Line condition change responsive: | ||||
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.
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![]() | Plural valves or valve seats: | ||||||||
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.
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![]() | Pivoted valve: | ||||
This subclass is indented under subclass 247.15. Apparatus in which the valve is pivoted.
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![]() | Ball valve: | ||||||||
This subclass is indented under subclass 247.15. Apparatus in which the valve is a substantially spherical
element.
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![]() | Seats vertically up: | ||
This subclass is indented under subclass 247.21. Apparatus having a seat lying in a general horizontal plane
above the valve.
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![]() | Seal replenishers: | ||||
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.
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![]() | Plural inlet: | ||||
This subclass is indented under subclass 247.11. Devices having connections for a plurality of inlet pipes.
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![]() | Divided and recombined passages: | ||||
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.
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![]() | Tangential inlet flow: |
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. | |
![]() | Downward partition encircles projecting outlet: | ||
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.
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![]() | Submerged inlet pipe end: |
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. | |
![]() | Hinged seal bowl: |
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. | |
![]() | Distinct seal bowl in flow line connected casing: | ||
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.
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![]() | U-seals: |
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. | |
![]() | Topside access beneath cover plate closed floor opening: |
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. | |
![]() | Enlarged upflow leg: |
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. | |
![]() | Topside access opening: | ||
This subclass is indented under subclass 247.45. Seals with a top side access means located above the liquid
seal level.
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![]() | Even diameter legs: |
This subclass is indented under subclass 247.41. Seals wherein both legs of the U-bend have substantially uniform and like internal cross sections. | |
![]() | Access opening: | ||
This subclass is indented under subclass 247.49. Seals having access means.
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![]() | Seal for relatively movable valving parts: | ||
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:
| |||
![]() | Horizontally moving valve: | ||
This subclass is indented under subclass 248. Apparatus in which the movement of the valve has a component
in a horizontal plane.
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![]() | Rotary: | ||
This subclass is indented under subclass 249. Apparatus in which the movement in a horizontal plane is
rotary.
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![]() | 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.
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![]() | Branched passage for sealing liquid: | ||
This subclass is indented under subclass 251.1. 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.
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| |||
![]() | With auxiliary means for varying liquid level: |
This subclass is indented under subclass 251.1. Apparatus including auxiliary means independent of the flow path for adjusting or varying the height of the liquid in the valve. | |
![]() | With baffle: | ||
This subclass is indented under subclass 251.1. 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.
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![]() | PLURAL TANKS OR COMPARTMENTS WITH PARALLEL FLOW: | ||||
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.
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|