U.S. PATENT AND TRADEMARK OFFICE
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U.S. Patent Classification System - Classification Definitions
as of June 30, 2000
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Class 417
PUMPS
Class Definition:
This is the general class for the pumping of fluids, and
includes the pumping of slurries, fluent material and the
like if handled in a manner not inconsistent with the
handling of fluids. With the exception of "gettering pumps"
as discussed in Lines With Other Classes and Within This
Class, below, a pump is defined as means to move a fluid by
taking it from one place or location and moving it to another
place or location different from whence it came, the pump,
therefore having an inlet and an outlet for the pumped fluid
which are separate and distinct.
The pumping of the fluid is generally accomplished by action
thereon of a mechanical member (e.g., piston) or by contact
or entrainment with another fluid (e.g. jet pumps). Also,
the pumping may be accomplished by the direct action on the
pumped fluid of an electric or magnetic force (e.g.,
electromagnetic pumps). However, for the line with respect
to "ion pumps", see Lines With Ohter Classes and Within This
Class and Subclass References to the Current Class, below.
VACUUM FORMATION BY GETTERING
This class is the residual home for the formation of a vacuum
in an enclosed space by a gettering action; a getter being a
material which when placed in an enclosed space reduces the
gas or vapor content of the space either by a chemical or
physical action. Also, included are those devices and
processes in which the fluid is ionized to permit or enhance
the gettering action. These devices are often termed
"getter-ion pumps". See the notes and search notes in
subclasses 48 and 49 for a statement of the lines.
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
LINE WITH CLASS 313 AND CLASS 315
For the line with Classes 313, Electric Lamp and Discharge
Devices and 315, Electric Lamp and Discharge Devices:
Systems, with respect to "ion pumps", see Subclass References
to the Current Class, below.
RELATIONSHIP TO CLASS 91, MOTORS: EXPANSIBLE CHAMBER TYPE
Refer to Lines With Other Classes and Within This Class in
the class definition of Class 91 for a statement of the line
between Classes 91 and 417.
RELATIONSHIP TO CLASS 92, EXPANSIBLE CHAMBER DEVICES
Class 92 is directed to expansible chamber devices, per se,
and with respect to nonrotary expansible chamber pumps is
related to Class 417 as a subcombination thereof. Class 92
is limited to expansible chamber devices in which the working
member has an oscillating or reciprocating motion to expand
and contract the chamber. Thus, Class 92 cannot take the
subcombination of any rotary expansible chamber pump. See
the note below regarding the relationship of this class (417)
and Class 418, Rotary Expansible Chamber Devices, for the
disposition of this art.
Set forth below are the lines between Class 92 and Class 417
as they relate to nonrotary expansible chamber pumps:
A. With Drive Means
1. Motor Driven
Class 92 excludes motor driven expansible chamber devices
when the motor is significantly claimed. See (2) Note in
Class 417 subclass 321 for a statement of what constitutes a
significantly claimed motor.
2. Operated By Art Device
Class 92 excludes an expansible chamber pump mounted upon or
adjacent to an art device to be operated thereby. See Class
417 subclasses 229+ for this subject matter and for a
definition of an art device.
3. Other Drive Mechanism
Other specific means to drive an expansible chamber pump such
as gearing, linkage, etc., including disconnectable drives
are not excluded from Class 92.
B. Valving
1. Pump Fluid
Class 92 excludes any expansible chamber pump which includes
control of the pump fluid by a valving action. Thus, any
claimed valving of pump fluid of an expansible chamber pump
is sufficient to preclude classification in Class 92 even
though the valving claimed may not be all of the valving
necessary to cause the pump to operate in the intended
manner.
2. Nonpump Fluid
Class 92 does not exclude valving of nonpump fluid as, for
example, valving for lubricant, coolant, sealant, etc.
C. With Diverse Pump
An expansible chamber pump in combination with another pump
of a different type (i.e., which, per se, would not be
classified in Class 92) is excluded from Class 92 unless the
pump of a different type is a mere auxiliary of the
expansible chamber pump (i.e., lubricant or coolant pump,
etc.).
Relationship to Class 137, Fluid Handling. The line between
Classes 137 and 417 is generally that of combination and
subcombination. Class 137 generally provides for fluid
handling systems and Class 417 generally provides for motor
driven pumps and pumps, per se. There are certain areas of
subject matter which are considered to be peculiar to pumps
and their operation and are considered as exceptions to the
general rule stated above. These exceptions and other
detailed lines will be set out below.
D. Pump-Tank Relationship
The combination of a pump and a tank generally will be
classified in Class 137. However, a single nominally recited
tank, reservoir, chamber, pump or other similar fluid holding
means will be considered as merely a flow line or conduit and
will be classified in Class 417. See (9) Note in the Class
Definition of Class 222, Dispensing, regarding other
pump-tank relationships.
E. Pump-Accumulator Relationship
An accumulator or surge dampening device is usually a device
having a single fluid opening and is connected to a pump
inlet or outlet for the purpose of maintaining a smooth flow
to or from the pump. Such devices when disclosed for the
purpose of surge dampening or insuring smooth flow and
claimed in combination with a pump are classified in Class
417.
F. Pump-Liquid Accumulation Control Relationship
1. A pump claimed in combination with a liquid accumulation
controlled valve is classified in Class 137 with the
following exceptions which are classifiable in Class 417:
a. When the liquid accumulation responsive valve controls a
liquid flow to the pump or a gas relief from the pump is for
the specifically disclosed purpose of priming the pump, see
Class 417, subclasses 200 and 435.
b. When the liquid accumulation responsive valve functions
as a pump valve in a fluid displacement-type pump, see Class
417, subclass 65 in general and subclasses 126+ and 138 in
particular.
c. When the liquid accumulation responsive valve is the
distributor of an expansible chamber-type pump, see Class
417, subclass 297.5.
2. A Jet pump claimed in combination with liquid level
responsive regulating means therefor is classified in Class
417, subclass 182.5.
3. A pump claimed in combination with liquid
accumulation-controlled drive transmission therefor is
classified in Class 417, subclass 211.5.
4. A pump claimed in combination with a liquid accumulation
controlled-drive motor therefor is classified in Class 417,
subclasses 36+.
G. Pump-Plural Serial Valve Relationship
A pump claimed in combination with plural serial valves in
either or both an inlet or an outlet flow path and without
any branched flow paths is classifiable in Class 417. The
rule for serial valves applies even though one or more of the
valves is manually operated or condition responsive, see
Class 417 for serial pump distributors, for a manually
operated valve in serial relationship with a pump
distributor, and for a condition responsive valve in
combination with a pump. (See Subclass References to the
Current Class, below.)
H. Pump-Main Flow Path and Branched Flow Path Relationship
Generally a branched flow system having a main flow path and
a branched flow path, whether including a pump or not, is
classifiable in Class 137. However, there are a number of
exceptions which usually depend upon the disclosure in the
particular patent as set forth below.
1. A pump having plural branched flow paths, whether valved
or not, communicating with a single source or receiver is
classifiable in Class 417. Where there is no specific
disclosure of the source or receiver for the flow paths, the
disclosure will be considered as if there were a single
source or receiver and will be classified in Class 417.
2. A pump having a main flow path and a branched flow path,
each communicating with separate sources or receivers is
classifiable in Class 417 if:
a. the source or receiver for the main flow path is
unclaimed or nominally claimed and
b. the branched flow path is specifically disclosed as a
relief inlet or outlet for the pump, a priming inlet to the
pump, a bypass around the pump, or a vent, waste or drain
outlet from the pump, and either(1) the main flow path is
uncontrolled or (2) the main flow path is controlled and the
branched flow line is (a) uncontrolled, (b) manually
controlled or (c) controlled by a condition responsive valve
responding to a condition in the main flow path which is
sensed between the pump and the main flow path controller.
I. Condition Responsive Control of Pump Drive Motor
A motor driven pump having a condition responsive control for
controlling the operation of the motor is classifiable in
Class 417. The combination of a pump and a disconnectable
drive, clutch or variable transmission having a condition
responsive control is classifiable in Class 417. (See
Subclass References to the Current Class, below.)
J. Direct Response Valve-Pump Cylinder Relationship
The combination of one or more direct response valves of the
type classifiable in Class 137, subclasses 511+ and a
nominally recited cylinder is classifiable in Class 137. The
specific recitation of a cylinder head is not considered to
be a specific recitation of the cylinder.
RELATIONSHIP TO CLASS 415, ROTARY KINETIC FLUID MOTORS OR
PUMPS
Class 415 takes rotary, nonexpansible chamber-type pumps.
However, Class 417 provides for rotary, nonexpansible
chamber-type pumps in certain combinations as enumerated
below. Unless specifically excluded below, a patent to a
rotary nonexpansible chamber-type pump, as defined in the
class definition of Class 415, will be classified as an
original in Class 415 as opposed to Class 417.
1. With Drive Means
a. Motor Driven
Class 415 excludes motor driven rotary nonexpansible
chamber-type pumps when the motor-pump combination is
significantly claimed. For a detailed explanation of what
constitutes a significantly claimed motor-pump combination
see Subclass References to the Current Class in this class
and Lines With Other Classes and Within This Class, General
Relationship With Other Classes, paragraph A in the Class 415
definition.
b. Operated By Art Device
A rotary, nonexpansible chamber- type pump operated by an art
device is excluded from Class 415. See Class 417 for this
subject matter and the definition of an art device. (See
Subclass References to the Current Class, below.)
c. Other Drive Mechanism
Other specific means to drive a rotary, nonexpansible chamber
pump such as gearing, linkage, etc., including disconnectable
drives (e.g., clutch) are not excluded from Class 415.
2. With Diverse Pump
The combination of a rotary, nonexpansible chamber-type pump
with another pump of a different type (e.g., recipro- cating,
rotary expansible chamber, etc.), is excluded from Class 415
and is classified in Class 417 unless the different type pump
is a mere auxiliary of the rotary, nonexpansible chamber-type
pump (e.g., lubricating or coolant pump). In the latter
case, classification in Class 415 is proper.
Relationship to Class 418, Rotary Expansible Chamber Devices
Class 418 takes rotary expansible chamber pumps even though
the disclosure and claims may be restricted to pump use. In
some ways Class 418 may be considered to be less
comprehensive than Class 417 and rotary expansible
chamber-type pumps in certain combinations enumerated below
will be classified in Class 417 rather than Class 418.
Unless specifically excluded below a patent to a rotary
expansible chamber type as defined in the Class Definition of
Class 418 will be classified as an original in Class 418 as
opposed to Class 417:
3. With Drive Means
a. With Motor
Class 418 excludes motor driven rotary expansible chamber
devices when the motor is significantly claimed even if the
motor is of the rotary expansible chamber type. For a
detailed explanation of what constitutes a significantly
claimed motor; see Subclass References to the Current Class,
below.
b. Operated By Art Device
A rotary expansible chamber pump mounted upon or adjacent an
art device to be operated thereby is excluded from Class 418.
See this class (417) for this subject matter and the
definition of an art device. (See Subclass References to the
Current, Class, below.)
c. Other Drive Mechanism
Other specific means to drive the pump such as gearing,
linkage, etc., including disconnectible drives (e.g., clutch)
are not excluded from Class 418 even if the drive is not
reversible.
4. Valving
a. Cyclic or Position Responsive
Class 418 will take rotary expansible chamber pumps combined
with valves for the pumped fluid which have a repetitive
pattern or cycle of operation which is related to the
rotation of the pump. These may be termed cyclic or position
responsive valving and include the opening and closing of
inlet or exhaust ports by the movement of the rotor past
same. The adjustment of this type valving so as to provide,
for example, early cutoff of supply is also included in Class
418. The inclusion, however, of means to cutoff operation of
the pump after a predetermined number of revolutions is
excluded from Class 418, this being considered to be a
dispensing feature for Class 222, Dispensing.
b. In-Line
An in-line valve is defined as one situated in the normal
line of pumped fluid flow which acts in some way to control
the flow in that line, but not by diverting the fluid to a
second or subsidiary flow line (e.g., bypass). Class 418
will take all in-line valves combined with a rotary
expansible chamber pump which are controlled by some means
other than a condition of the pumped fluid (e.g., manual
throttle) and will also take those which are actuated
directly by the application of the pumped fluid thereto
(i.e., direct response valves). Those devices including
in-line valves which are controlled by a pumped fluid
condition (e.g., pressure, flow) and in which said valves are
not of the direct response type are excluded from Class 418
and will be classified in Class 417 if otherwise
appropriate.
c. Branched Flow or By-pass
i. Separate Valve Means
Those rotary expansible chamber devices which include a
separate valve means (as opposed to a movable chamber part as
discussed in paragraph (2) immediately below) to divert or
bypass all or a portion of the pumped fluid from its normal
or first course of flow to a second or waste path are
excluded from Class 418 regardless of whether the valve is
manually or otherwise controlled unless the diverted fluid is
used merely for a pump perfecting function such as
lubricating, cooling, vane bias, etc.
ii. Movable Chamber Part
Many rotary expansible chamber pumps have expansible chamber
parts which are in running contact with other chamber parts
and which move from a "normal" or contacting position to a
noncontacting position and in so moving allow passage or
bypass of pumped fluid thereby. Exemplary of such parts are
vanes, abutments, end plates, etc., and such parts are
usually biased into contacting position by means such as a
spring, pressure fluid conducted from the expansible chamber
or the like. Such devices are not excluded from Class 418
even though the yielding of the part may be considered to be
performing a bypassing function. However, if pumped fluid is
conducted to the part for such a biasing function (e.g.,
behind end plate) and there is a controlled application of
fluid to or release of the fluid from the bias area for the
disclosed purpose of bypassing said fluid or conducting it to
another point of use such devices are excluded from Class 418
and are classified in Class 417 if otherwise appropriate.
Also Class 418 excludes a pump having a movable chamber part
whose movement is controlled in response to the pressure or
flow of the pumped fluid of a second rotary expansible
chamber device.
d. Reversible or Unidirectional Flow
Some rotary expansible pumps are provided with adjustable or
self-acting means by which for a given direction of rotation
of the pump the flow may be reversed in the line in which the
fluid is being pumped, or upon reversal of the direction of
rotation of the pump the flow will continue in the same
direction in the pumped fluid flow line. This, per se, will
not serve to preclude classification in Class 418.
5. With Diverse Pump
The combination of a rotary expansible chamber pump with
another pump of a different type (centrifugal, reciprocation,
etc.), is excluded from Class 418 and is classified in Class
417 unless the different type pump is a mere auxiliary of the
rotary expansible chamber pump as, for example, a lubricating
or cooling fluid pump, etc. In the latter case
classification in Class 418 is proper.
SEE OR SEARCH THIS CLASS, SUBCLASS:
1 for a motor driven pump having a condition responsive
control for controlling the operation of the motor.
48 and 49, for a statement of the lines see the notes and
search notes in these subclasses.
49 for ion pumps.
50 in which pumping may be accomplished by the direct action
on the pumped fluid of an electric or magnetic force (e.g.,
electromagnetic pumps).
212 for the combination of a pump and a disconnectable
drive, clutch or variable transmission having a condition
responsive control.
229 for a rotary, nonexpansible chamber-type pump operated
by an art device.
229 for a rotary expansible chamber pump mounted upon or
adjacent an art device to be operated thereby.
279 for a condition responsive valve in combination with a
pump, subclass 441 for a manually operated valve in serial
relationship with a pump distributor, and subclass 456 for
serial pump distributors.
321 for a detailed explanation of what constitutes a
significantly claimed motor-pump combination see the (2) Note
in this subclass.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
62, Refrigeration, subclass 55.5 for cold traps including
those in which the sole disclosure is to act as a "pump" and
for cold traps combined with a nominally claimed mechanical
or roughing pump. Class 417, however, takes the combination
of a cold trap and a significantly claimed device of this
class (pump).
73, Measuring and Testing, subclass 168 for means to test
blowers and pumps.
119, Animal Husbandry, 72 for animal watering devices
including animal operated pumps combined with a trough for
receiving the pumped water.
166, Wells, appropriate subclasses for pumps combined with
well processes or features especially, 369 for well
production processes including pumping steps, subclasses 53+
for automatic wells including control of a pump in response
to a well condition, subclass 54.1 for wells with means for
separately pumping from plural sources in a well, subclasses
61 and 62 for heating, refrigerating or insulating means with
an eduction pump or plunger in the well, subclasses 68+ for
above and below ground structure including an eduction pump
or plunger in the well, subclasses 105+ for a well with an
eduction pump or plunger in the well, subclass 176 well
brushing, scraping, cutting or punching-type cleaners on a
pump sucker rod, subclasses 316+ for valves including well
pump or tubing drain valves.
406, Conveyors: Fluid Current, appropriate subclasses for
systems which transport solids by means of a fluid current,
and which include a pump for generating the fluid current.
See particularly 10 for control circuits for pump drives,
which are responsive to a sensed condition, and subclasses 45
and 46+ for subject matter relating to the pumping and
transportation of slurries.
415, Rotary Kinetic Fluid Motors or Pumps, for rotary fluid
kinetic energy devices disclosed as a pump or a motor. Class
415 will also take a plurality of such devices in which each
is a pump or each is a motor. Class 417 will take a rotary
fluid kinetic energy motor driving a rotary fluid kinetic
energy pump if a claim sets out that one is a motor and one
is a pump. However, Class 415 will take this disclosed motor
driven pump relation if a claim does not reflect that one is
a motor and the other a pump.
416, Fluid Reaction Surfaces (i.e., Impellers), appropriate
subclasses for motor driven fluid reaction surfaces (i.e.,
impellers) in which there is no claimed fluid confining or
deflecting means, upstream or downstream of or encompassing
the impeller.
418, Rotary Expansible Chamber Devices, for rotary expansible
chamber devices disclosed as a pump or a motor. Class 418
will also take a plurality of such devices in which each is a
pump or each is a motor. Class 418 will not take a rotary
expansible chamber-type motor driving a rotary expansible
chamber-type pump if a claim recites one as a motor and one
as a pump. However, Class 418 will take this disclosed motor
driven pump relationship if a claim does not reflect that one
is a motor and the other a pump.
505, Superconductor Technology: Apparatus, Material,
Process, 150 for high temperature (T[subscrpt]c[end
subscrpt] 30 K) superconducting devices, and particularly
subclass 165 for pumps utilizing a suspension of
superconducting particulate material, and cross-reference art
collection 910 for pumps utilizing superconducting
materials.
623, Prosthesis (i.e., Artificial Body Members), Parts
Thereof, or Aids and Accessories Therefor, subclass 3 for
pumps solely disclosed as artificial hearts.
SUBCLASSES
Subclass:
1
This subclass is indented under the class definition.
Subject matter in which the pump is provided with (1) a motor
to drive the fluid moving element thereof, (2) control means
to control the motor in some manner and (3) a separate
sensing means which is responsive to the occurrence of a
condition or a change in condition of either the pump or the
fluid being pumped and which causes operation of the control
means to alter the operation of the motor.
(1) Note. Sensing of the speed of a motor which is
mechanically connected to the pump for driving same is
considered as sensing a condition of the pump and is included
under this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
187 for regulation of a jet pump by motive fluid control,
jet pumps not being considered as motor driven.
196 for diverse pumps having condition responsive control of
a drive motor for one pump which is a mere priming pump for
another.
212 for condition responsive control of a pump drive
transmission.
321 for pumps which are cyclically driven by a cyclically
operable motor and in which the control of the motor is
caused to operate cyclically by a cyclically changing
condition of the pump or pump fluid such that this change of
condition and its control of the motor are the normal manner
of operation.
Subclass:
2
This subclass is indented under subclass 1. Subject matter
comprising at least two pumps which are either (1)
independently driven by separate drive motors, (2) adapted to
be supplied from separate sources, or (3) adapted to deliver
to separate destinations.
(1) Note. For purposes of this definition, a single
cylinder having a pumping member (e.g., piston) which serves
to divide the cylinder into two pumping chambers is
considered to comprise plural pumps if the pump chambers are
adapted to deliver fluid to separate destinations or receive
fluid from separate sources.
(2) Note. To be included under this definition, the plural
pumps must supply fluid for external use (i.e., one may not
be a mere auxiliary of another such as a lubricant, coolant,
or priming pump).
(3) Note. An entrainment-type pump (e.g., jet pump) has not
been construed as motor driven and consequently the
combination of a condition responsive motor driven pump and
jet pump is not included under part (1) of the above
definition and such combination would be classified here only
if the motor driven pump and jet pump respectively deliver to
separate destinations or receive fluid from separate
sources.
Subclass:
3
This subclass is indented under subclass 2. Subject matter
in which each of said plural pumps has its respective inlet
or outlet connected to a single flow line so that fluid will
flow either to or from said pumps through said flow line.
(1) Note. For purposes of this definition, a common inflow
or outflow line is defined as a conduit or tank in that
portion of the system which handles fluid flow to or from two
or more pumps. Patents disclosing parallel flow paths in
which a pressure condition is sensed in one path only, but
for the disclosed purpose of indicating the common flow line
pressure condition, have been placed in subclass 2, above,
and appropriately cross-referenced into this subclass or
those indented hereunder.
Subclass:
4
This subclass is indented under subclass 3. Subject matter
in which sensing means is operative to sense a condition or
change of condition occurring in the fluid in the common flow
line joining either the pump inlets or pump outlets.
Subclass:
5
This subclass is indented under subclass 4. Subject matter
in which each of said plural pumps is driven by separate
drive motor and the control means is operative to
simultaneously or relatively control the operation of each of
said plural drive motors.
Subclass:
6
This subclass is indented under subclass 5. Subject matter
in which there is an additional sensing means to sense a
condition or change in condition in either (1) a fluid flow
line which is peculiar to a single pump, or (2) a pump which
is peculiar to a single flow line, said additional sensing
means serving to effect operation of the same or different
control means.
Subclass:
7
This subclass is indented under subclass 5. Subject matter
in which the control means for the pumps comprise a start and
stop device for the motor of each pump and which are related
to one another in such a manner that the pumps will either be
started or stopped in a certain order in response to changes
in conditions sensed by the sensing means.
Subclass:
8
This subclass is indented under subclass 7. Subject matter
having means related to the control means for cyclically
changing the order of starting or stopping the pump drive
motors.
Subclass:
9
This subclass is indented under subclass 1. Subject matter
in which there is means provided for accumulating or
detecting leakage of pump fluid from the pump or system or
leakage of an extraneous fluid into the pump or system and
the control means acts in response to such leakage to stop
operation of the pump motor.
(1) Note. There must be a specific disclosure that the
fluid which causes operation of the control means has leaked
from the device. The mere possibility of detecting leakage
by some conventional means, such as a pressure responsive
device, is not sufficient for classification in this
subclass.
Subclass:
10
This subclass is indented under subclass 1. Subject matter
in which the drive motor comprises an engine in which fuel is
burned in a chamber from which power is directly derived and
the control means is operative to either (1) control
actuation of a secondary motor which is utilized for
initiating operation of the fuel burning engine or (2)
control operation of the pump to cause same to be operated as
a motor for initiating operation of the fuel burning engine.
Subclass:
11
This subclass is indented under subclass 1. Subject matter
in which the drive motor is of the reciprocating expansible
chamber type and derives its power by the burning of fuel in
the chamber and in which the piston or working member of the
motor is free of any mechanical linkage or gearing which
limits its movement to a fixed stroke during its cycle of
operation.
Subclass:
12
This subclass is indented under subclass 1. Subject matter
having means related to the sensing means for either (1)
causing the state of operation of the drive motor to be
maintained for a specified period of time after a condition
or change in condition is detected by the sensing means
before allowing the state of operation to be changed in
accordance with the sensed condition, (2) allowing the state
of operation of the drive motor to be changed in response to
a sensed condition and then causing said changed state of
operation to be maintained for a specified period of time
regardless of further condition changes, (3) causing the
control means or sensing means to be ineffective for a
specified period of time during motor start up, or (4)
altering the effectiveness of the control means for a
specified period of time after the sensing means has detected
a change in condition.
(1) Note. A fluid dashpot or damper utilizing fluid
independent of the pump fluid and which serves only to
attenuate the effect of periodic condition fluctuations of
short duration is not considered to be a delay or timing
means under this definition.
Subclass:
13
This subclass is indented under subclass 1. Subject matter
including a means to supply lubricating, sealing, or cooling
fluid to the pump and the sensing means senses a condition or
change of condition of said lubricating, sealing, or cooling
means and operates the motor control means in response
thereto.
Subclass:
14
This subclass is indented under subclass 1. Subject matter
including an additional sensing means operatively connected
to the control means, said additional sensing means being
responsive to a condition or change of condition (e.g.,
ambient condition) of the surrounding environment.
Subclass:
15
This subclass is indented under subclass 1. Subject matter
in which there is additionally provided means for
transmitting motion from the motor to the pump and control
means for either (1) interrupting motion of the pump (e.g.,
clutch, lock, etc.), (2) varying the rate of motion of the
pump (e.g., brake, adjustable gearing, etc.) or (3) changing
the swept volume of pumping member or motor working member
displacement of an expansible chamber-type pump or motor
(e.g., stroke control).
Subclass:
16
This subclass is indented under subclass 1. Subject matter
in which the pump is driven by two or more individual motors,
each of said motors having a motor working member for driving
the same fluid moving element of the pump and in which at
least one of the motors is controlled by the controlling
means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
10 for condition responsive control of a starter motor for
an internal combustion engine. The starter motor, even
though it may incidentally drive the pump while cranking the
combustion engine, is not considered to be a separate pump
drive motor for this subclass.
Subclass:
17
This subclass is indented under subclass 1. Subject matter
in which the control means comprises two or more controlling
elements which are capable of being separately actuated in
response to the same or different conditions to separately
control the drive motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
10 for condition responsive control of a starter motor for
an internal combustion engine, such apparatus usually
incorporating a separate control means for terminating
operation of the internal combustion engine.
Subclass:
18
This subclass is indented under subclass 1. Subject matter
comprising a single drive motor controlling element which is
caused to be operated in response to means sensing plural
conditions which are (1) different in kind, e.g., pressure
and flow rate, or (2) if of the same kind, different by the
part of the system characterized by the condition, e.g.,
inlet and discharge pressures of the pump.
(1) Note. The diverse condition may be a condition external
of the pump or pump fluid system, e.g., a drive motor
condition.
Subclass:
19
This subclass is indented under subclass 18. Subject matter
in which the sensing means responds to a condition or change
of condition on the fluid inlet or intake side of the pump
and a condition or change of condition on the fluid outlet or
discharge side of the pump.
Subclass:
20
This subclass is indented under subclass 18. Subject matter
in which one of the plural conditions to which the sensing
means responds is a change in rate of pump fluid flow to, or
from the pump.
Subclass:
21
This subclass is indented under subclass 18. Subject matter
in which the drive motor is of the type which is motivated by
a fluid and one of the plural conditions to which the sensing
means responds is a condition or change in condition of the
motor driving fluid.
Subclass:
22
This subclass is indented under subclass 18. Subject matter
in which one of the plural conditions to which the sensing
means responds for causing operations of the single drive
motor control element is the rate of speed at which the pump
is driven.
Subclass:
23
This subclass is indented under subclass 22. Subject matter
having valve means for varying the flow of fluid being
pumped, there being additionally provided a sensing means
having a single sensing part for detecting a condition other
than the rate of speed at which the pump is driven, the
single sensing means causing operation of both the pump fluid
valve means and the single drive motor control element.
Subclass:
24
This subclass is indented under subclass 22. Subject matter
in which the means sensing the rate of speed at which the
pump is driven comprises either a secondary pump or an
electric generator which is mechanically driven by the pump
drive motor for producing a fluid or electric signal,
respectively, indicative of the rate of speed at which the
pump is driven.
Subclass:
25
This subclass is indented under subclass 1. Subject matter
comprising two or more pressure responsive sensing elements
which either simultaneously, successively, or selectively
respond to a change in pressure occurring in the same part of
the system (e.g., both respond to pump discharge pressure)
for effecting operation of a single motor control element.
Subclass:
26
This subclass is indented under subclass 1. Subject matter
including valve means for varying the flow of fluid being
pumped, which valve means is operated by sensing the
occurrence of a condition or change of condition in the fluid
being pumped.
(1) Note. This definition is not intended to include those
devices in which there is a single sensing means operating a
valve whose sole function is to divert a portion of the
pumped fluid to cause operation of the drive motor control
means, such devices have been considered to be merely pilot
valves for the drive control means.
(2) Note. A direct acting valve, e.g., a check valve which
is responsive only to the direction of flow in a line is not
included. However, a valve which diverts flow from one line
to another, in a branched system, even though dependent only
on the direction of flow in the lines is included.
(3) Note. For purposes of this definition, pump fluid
includes any fluid which is caused to be moved by the pump.
Therefore, a gas vent valve for spoiling a liquid pump by
allowing gas to enter the pump is included under this
definition. Also, a discriminating valve for allowing gas,
but not liquid, to be vented from a liquid pumping system is
included.
SEE OR SEARCH THIS CLASS, SUBCLASS:
10 for condition responsive control of pump fluid which is
utilized as motive fluid for starting an internal combustion
engine drive motor.
Subclass:
27
This subclass is indented under subclass 26. Subject matter
in which means are provided for retarding or delaying
actuation of the valve means for the purpose of preventing
increase of pressure in the pump until a period of time after
the drive motor control means has been adjusted to cause such
increase, said valve actuation delaying or retarding means
being separate and isolated from the motor control means and
having no retarding or delaying effect thereon.
(1) Note. Devices in which the pump fluid valve is caused
to be operated in response to the motor control element
having been adjusted to a predetermined motor controlling
position are not included under this definition in the
absence of a separate retarding or delaying means for the
valve control means.
Subclass:
28
This subclass is indented under subclass 26. Subject matter
in which the valve means and the control means for the drive
motor are both caused to be actuated by a sensing means
having a single sensing part for detecting the occurrence of
a condition or change of condition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
23 for a common condition sensing element which causes
operation of both a pump drive motor control element and a
pump fluid control valve.
Subclass:
29
This subclass is indented under subclass 26. Subject matter
in which the valve means is controlled in response to one
condition of the system and the control means for the motor
is responsive to a second condition which (1) differs in kind
from the first, e.g., pressure and flow rate, or (2) if of
the same kind, differs by the part of the system
characterized by the condition, e.g., inlet and discharge
pressures of the pump.
SEE OR SEARCH THIS CLASS, SUBCLASS:
23 for a sensing means responsive to pump speed for causing
operation of a pump drive motor control element and a sensing
means responsive to a condition other than pump speed for
causing operation of a pump fluid control valve.
Subclass:
30
This subclass is indented under subclass 29. Subject matter
in which the fluid control means comprises a valve in the
discharge of the pump which is farther from the pump, on the
discharge side, than the sensing means for the drive
controlling means, said valve being controlled in response to
the collection of liquid in a receiver or receptacle located
in the pump discharge line.
Subclass:
31
This subclass is indented under subclass 30. Subject matter
in which the drive control means is responsive to the liquid
pressure in the pump discharge line.
Subclass:
32
This subclass is indented under subclass 1. Subject matter
in which the condition sensed is a change in the temperature
of either the pump or the fluid being moved by the pump.
Subclass:
33
This subclass is indented under subclass 1. Subject matter
in which the control means acts to stop operation of the pump
by stopping the drive motor in response to a change of
condition but will not again start the pump when the
condition returns to normal; the control means requiring the
intervention of a human operator to restore the pump to a
running condition.
Subclass:
34
This subclass is indented under subclass 1. Subject matter
in which the drive motor comprises an engine in which fuel is
burned in a chamber from which the power is directly derived
and the control means includes means which acts on the engine
to change some operating characteristic thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
10 for system condition responsive control of a starter
motor for an internal combustion engine driving a pump.
11 for system condition responsive control of a free
piston-type internal combustion drive engine.
Subclass:
35
This subclass is indented under subclass 1. Subject matter
in which the drive motor is of the type which is driven
directly by wind, (e.g., a windmill), and a receptacle is
provided for receiving liquid which is to be pumped or which
has been pumped by the pump and the sensing means is
responsive to the quantity of liquid collected in the
receptacle.
Subclass:
36
This subclass is indented under subclass 1. Subject matter
in which there is provided a receptacle for receiving liquid
which is to be pumped or which has been pumped by the pump
and the sensing means is responsive to the quantity of liquid
in the receptacle.
SEE OR SEARCH THIS CLASS, SUBCLASS:
35 for control of a wind motor in response to liquid
accumulation.
182.5 for means for controlling an entrainment-type pump
(e.g., jet pump) in response to the level of pumped liquid,
subclass 211.5 for means controlling a pump drive
transmission (e.g., clutch, cam, etc.) in response to the
level of pumped liquid and subclass 297.5 for liquid level
control which modifies the operation of an expansible chamber
pump distributor.
Subclass:
37
This subclass is indented under subclass 36. Subject matter
in which the sensing means is responsive to movement of the
liquid receptacle or an auxiliary liquid receptacle in
communication therewith, said movement being caused by the
weight of the liquid collected therein.
Subclass:
38
This subclass is indented under subclass 36. Subject matter
in which the sensing means comprises a device which responds
to liquid pressure changes and is either in fluid
communication with or mounted within the receptacle in a
manner such that the liquid must either reach a predetermined
level before it may pass to the pressure sensing device or
exert sufficient pressure on the sensing device to cause
actuation thereof.
(1) Note. A movable receptacle is not considered a pressure
sensor under this definition, such devices being classified
in subclass 37 above.
(2) Note. The liquid pressure may be transmitted to the
sensing means via another liquid (e.g., mercury column).
Subclass:
39
This subclass is indented under subclass 36. Subject matter
in which the pump is driven by a fluid motor and the supply
of motive fluid for the fluid motor is in fluid communication
with the liquid collecting receptacle.
Subclass:
40
This subclass is indented under subclass 36. Subject matter
in which the sensing means comprises a buoyant element which
floats on the surface of the liquid collected in the
receptacle.
Subclass:
41
This subclass is indented under subclass 40. Subject matter
in which the pump is driven by a fluid motor and the control
means acts to control the flow of fluid to said motor.
Subclass:
42
This subclass is indented under subclass 1. Subject matter
in which the sensing means senses the rate of speed at which
the pump is driven.
SEE OR SEARCH THIS CLASS, SUBCLASS:
22 for a single motor control element which is operated in
response to means sensing diverse conditions, one of said
diverse conditions being the speed of the pump.
Subclass:
43
This subclass is indented under subclass 1. Subject matter
in which the sensing means is responsive to variations in the
rate of flow of the fluid flowing to or from the pump.
Subclass:
44.1
By control of electric or magnetic drive motor:
This subclass is indented under subclass 1. Subject matter
in which the motor is of the type having a working member
(e.g., armature) which is motivated by electricity or a
magnetic field.
(1) Note. Collected in this subclass are patents directed
to system condition responsive control of drive motors of the
type commonly referred to as magnetic or electromagnetic
clutches.
Subclass:
44.11
Responsive to change in electrical operating characteristic:
This subclass is indented under subclass 44.1. Apparatus
wherein the electric drive motor comprises a sensing means
where an operating characteristic changes in response to a
change in an electrical current drawn by the motor or a
change in a voltage across the motor or a change in a phase
shift of the motor.
Subclass:
44.2
Responsive to pump fluid pressure:
This subclass is indented under subclass 44.1. Apparatus
having a sensing means responsive to variation in pressure
present in the fluid flowing to or out from the pump and
which causes operation of the control means to alter the
operation of the motor.
(1) Note. The fluid pressure may be transmitted to the
sensing means via another liquid (e.g., mercury column).
Subclass:
44.3
Inlet pressure:
This subclass is indented under subclass 44.2. Apparatus
wherein the sensing means is located at an inlet side of the
pump.
Subclass:
44.4
Low pressure stops motor from turning on pump:
This subclass is indented under subclass 44.2. Apparatus
wherein the motor comprises an electrical contact having an
opened position and a closed position and the contact remains
in the opened position as long as the sensed pressure of the
fluid remains below a predetermined value.
Subclass:
44.5
Mercury switch:
This subclass is indented under subclass 44.2. Apparatus
wherein the motor comprises an electrical circuit and the
sensing means includes a device which contains mercury which
is motivated by the variations in the fluid pressure; the
said motivation triggers the electrical circuit of the motor
to close or open.
Subclass:
44.6
Dial-type sensor:
This subclass is indented under subclass 44.2. Apparatus
wherein the motor comprises an electrical circuit and the
sensing means includes a dial indicator which has a rotary
movement responsive to the fluid pressure and a manually
adjustable set point which causes the electrical circuit to
open or close when the positions of the indicator and manual
set point are properly aligned.
Subclass:
44.7
Bellow-type sensor:
This subclass is indented under subclass 44.2. Apparatus
wherein the motor comprises an electrical circuit and the
sensing means includes a flexible structure which is capable
of expanding to increase the volumetric capacity thereof,
said structure comprising (a) a tube of flexible material
having a circumferentially corrugated or pleated wall, (b) at
least four plates, each plate having a central opening
therein defining an edge inwardly of the outer peripheral
edge thereof, said plates being arranged in superposed
relation with adjacent plates secured along their inner and
outer edges alternately, or (c) a pair of rigid platelike
members pivoted together along a portion of their peripheral
edges, the remaining peripheral edge portion of said plates
being joined together by a flexible member which is pleated
in some position of relative pivotal movement of the
platelike members.
Subclass:
44.8
Piston-type sensor:
This subclass is indented under subclass 44.2. Apparatus
wherein the motor comprises an electrical circuit and the
sensing means includes a plunger or a solid disk which fits
snugly into a cylinder and wherein the plunger or the disk
moves when subjected to the fluid pressure variation in the
cylinder causing the electrical circuit of the motor to close
or open.
Subclass:
44.9
Diaphragm:
This subclass is indented under subclass 44.2. Apparatus
wherein the motor comprises an electrical circuit and the
sensing means includes a relatively thin membranelike member
having a peripheral edge portion, said member being adapted
to be associated with a surrounding or encompassing tubular
rigid structure to extend transversely thereof to form a
closing wall for said tubular structure, the outer peripheral
edge of said membrane being in sealing relationship with the
encompassing wall of said tubular structure; said member
moves in response to the fluid pressure variation causing the
electrical circuit of the motor to close or open.
(1) Note. The membranelike member need not span the entire
space within the encompassing wall of the tubular member, but
may be in the form of a ring or frustum having the inner
peripheral edge thereof in sealing engagement with a rigid
element movable relative to and coaxial with the encompassing
tubular member.
Subclass:
45
Subject matter under subclasses 44.1+ in which the motor is
electrically operated and the motor or electric supply
circuit therefor includes an electrical component (e.g.,
resistance element, starting winding, etc.) which is either
(1) adjustable to change its electrical value or
characteristic or (2) capable of being included in or shunted
out of the main motor circuit; and in which the control means
acts to control the adjustment or shunting of the component
in response to the sensed condition.
Subclass:
46
This subclass is indented under subclass 1. Subject matter
in which the motor drive means for the pump is of the type
which includes a movable working member which is motivated by
a fluid and the control means comprises means for controlling
the flow of motive fluid to or from the motor in response to
the sensing means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
21 for a single fluid motor control element which is
operated in response to means sensing diverse conditions, one
of said diverse conditions being a motive fluid condition.
34 for means for system condition responsive control of an
internal combustion-type drive engine.
41 for means for controlling motive fluid to drive motor in
response to float means which senses accumulation of pumped
liquid in a receiver.
Subclass:
47
This subclass is indented under subclass 46. Subject matter
in which the motor is of the type in which the drive element
rotates about an axis and derives its power by the fluid
impacting against the drive element.
Subclass:
48
This subclass is indented under the class definition.
Subject matter in which (1) the fluid is pumped by or the
pumping effect relies upon the direct action thereon of
electrical means or a magnetic field, or (2) the fluid is
"pumped" or trapped by means of a getter.
(1) Note. This is the residual home for the creation of a
vacuum in an enclosed space by means of a gettering action as
defined in (2) Note below. This and indented subclasses
include the combination of the chamber to be evacuated and
the gettering means. It also includes significant claimed
containers holding getter material for disposition in a
chamber to be evacuated.
(2) Note. A getter is a material which, when placed in an
enclosed space, reduces the gas or vapor content of the space
either by a chemical or physical action.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322 for pumps having a chamber which is expanded and
contracted by an electrical or magnetostrictive action on the
walls thereof.
SEE OR SEARCH CLASS:
75, Specialized Metallurgical Processes, Compositions for Use
Therein, Consolidated Metal Powder Compositions, and Loose
Metal Particulate Mixtures 255 for a loose metal particle
composition.
96, Gas Separation: Apparatus, 108 for solid sorbent
apparatus for separating vaporous or gaseous constituents.
The subject matter classified in Class 96 may be intended to
create a vacuum in an enclosed space, but must selectively
separate one constituent from another. Thus, Class 96 does
not take solid sorbent apparatus or any other means intended
to sorb all of the gas or vapor constituents in a chamber.
204, Chemistry: Electrical and Wave Energy, 192.1 for
processes for coating or forming an article by cathode
sputtering and subclass 298.01 for cathode sputtering
apparatus to coat or form an article.
252, Compositions, 181.1 for getters and gas or vapor
generating materials, per se, and also for such materials
claimed as being in a container, but where no structure of
the container is claimed.
313, Electric Lamp and Discharge Devices, subclasses 545-566
for electric lamps and space discharge devices which include
a getter or gas or vapor generating material as a part
thereof.
406, Conveyors: Fluid Current, appropriate subclasses for
systems which transport solids by means of a fluid current,
and which include a pump for generating the fluid current.
See particularly 10 for control circuits for pump drives,
which are responsive to a sensed condition, and subclasses 45
and 46+ for subject matter relating to the pumping and
transportation of slurries.
445, Electric Lamp or Space Discharge Component or Device
Manufacturing, 38, 53+ and 73 for methods and apparatus for
evacuating electric lamp and space discharge devices and
including some step or means limited to the manufacture or
repair of electric lamp or space discharge device.
Subclass:
49
This subclass is indented under subclass 48. Subject matter
in which the pumping action is effected by or relies upon the
ionization of the pumped fluid by the action of electrical
means and including a getter material for the ionized fluid
or an additional pump of a different type (e.g., mechanical,
diffusion, etc.).
(1) Note. The line between this Class 417 and Classes 313,
Electric Lamp and Discharge Devices and 315, Electric Lamp
and Discharge Devices: Systems, in the field of ionic pumps
generally falls into two categories as follows: (a) SPACE
DISCHARGE AND GETTERING - The distinction between Class 417
and Classes 313 and 315 in the field of creation of a high
vacuum involving electrical space discharge with gettering is
one of art. Thus, a patent to a space discharge device
combined with gettering means (the getter may be an electrode
of the space discharge device) in which the sole disclosure
is to act as a vacuum pump (i.e., the only disclosed use of
the space discharge device is to ionize fluid to be trapped
by the getter); or one in which all of the claims are limited
to a pumping or vacuum creating function will be classified
as an original in Class 417. Conversely, those in which the
disclosure is not limited to a vacuum pump function and
having a claim not limited to pumping will be classified in
Class 313 or Class 315 if otherwise appropriate; (b) SPACE
DISCHARGE WITHOUT GETTERING - Those devices in which a fluid
or fluid stream is ionized by a space discharge device and do
not include gettering of the ionized fluid will generally be
classified in Class 313 or 315 even though the sole
disclosure relates to pumping or vacuum formation. However,
if in addition to the ionization means an additional pump of
the nonionization type is claimed the patent will be
classified in Class 417.
SEE OR SEARCH CLASS:
313, Electric Lamp and Discharge Devices, appropriate
subclasses and see particularly 231.01, 359.1+ and 545 to
566. See (1) Note above.
315, Electric Lamp and Discharge Devices: Systems,
appropriate subclasses and see particularly 111.01 See (1)
Note above.
Subclass:
50
This subclass is indented under subclass 48. Subject matter
in which the pumped fluid is electrically conductive, a
current being caused to flow in the fluid while being
subjected to a magnetic field, the result being a pumping
action on the fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
49 for the "pumping" of fluid or formation of a vacuum by
ionizing the fluid to be pumped and subjecting the ionized
fluid to a magnetic field and see the notes thereto for
similar art classified elsewhere.
SEE OR SEARCH CLASS:
310, Electrical Generator or Motor Structure, subclass 11
for dynamoelectric apparatus utilizing a conducting fluid.
Subclass:
51
This subclass is indented under subclass 48. Subject matter
provided with getter means and in which means are provided to
elevate the temperature of the getter, to change the state of
the getter from a solid to a vapor or to renew the getter to
perform its gettering function after having already operated
as a getter.
Subclass:
52
This subclass is indented under the class definition.
Subject matter in which the fluid to be pumped is isolated in
a chamber, heated to expel a portion thereof from the
chamber, this expelled portion constituting the pumped fluid,
and the fluid remaining in the chamber then cooled so as to
contract and establish a reduced pressure in the chamber to
draw in a new charge of fluid.
Subclass:
53
This subclass is indented under the class definition.
Processes of pumping.
SEE OR SEARCH CLASS:
166, Wells, 369 for a process of producing a well including
a significant manipulative step in addition to pumping.
Subclass:
54
This subclass is indented under subclass 53. Processes in
which one fluid is pumped or motivated by direct contact or
entrainment with another fluid, the motive fluid before
contact or entrainment being separate from the pump fluid.
Subclass:
55
This subclass is indented under subclass 54. Processes in
which the composition of the motive fluid is specified in a
claim.
(1) Note. The following are excluded under this definition
as specific motive fluid: water, air, steam, mercury. Oil is
also excluded under this definition unless the composition is
more specifically recited than mere "oil".
Subclass:
56
This subclass is indented under the class definition.
Apparatus in which the pump has a piston which reciprocates
within an elongated cylinder of uniform cross-sectional
dimensions which is adapted to be positioned within a drilled
well, said piston serving to separate the cylinder into
respective motor and pump chambers, means providing either a
restricted or a controlled flow path which provides
communication between the pump and motor chambers (i.e.,
between opposite sides of the piston), the induction of at
least a portion of the fluid to be pumped flowing serially
through the motor chamber, said restricted or controlled flow
path, and thence into said pump chamber; motive fluid being
subsequently applied to said motor chamber to drive said
piston on an eduction stroke.
(1) Note. The motive fluid under this definition may be
derived either from the well itself or from an external
source.
(2) Note. This subclass and those indented hereunder are
intended to include the subcombination of a valved or
radially expansible piston for performing a valving function
which is disclosed as having utility in the apparatus defined
herein.
Subclass:
57
This subclass is indented under subclass 56. Apparatus in
which there is provided means for controlling the flow of
liquid from the pump chamber, said flow controlling means
being operated in response to either (1) the sensing of a
condition or change in condition or (2) the arrival of the
piston at a predetermined position in the cylinder.
(1) Note. For purposes of this definition, a mere check
valve in the eduction flow conduit which opens in the
direction of pump fluid eduction is not considered to be
condition responsive control. Also, the mere passing of the
eduction port by the free piston is not considered to be
position responsive control of the type herein provided for.
Subclass:
58
This subclass is indented under subclass 56. Apparatus in
which there is provided valve means for controlling the inlet
of motive fluid to the motor chamber, said valve means
comprising mechanical elements which are relatively moved in
response to either (1) the sensing of a condition or change
in condition or (2) the arrival of the piston at a
predetermined position in the cylinder.
(1) Note. For purposes of this definition, a mere check
valve positioned within the motive fluid supply line which
opens in the direction of motive fluid supply to the motor
chamber is not considered to be condition responsive
control.
(2) Note. Supply of motive fluid which is controlled by
well liquid level in which the well liquid serves to directly
cover or uncover motor chamber supply ports is excluded under
this definition. However, a piston controlled cylinder port
which is subsequently opened to allow the supply additional
motive fluid is included hereunder.
Subclass:
59
This subclass is indented under subclass 56. Apparatus in
which at least a portion of the piston is capable of
expansion and contraction in a direction perpendicular to its
axis of reciprocation to thereby provide a valving action
with the chamber in which it reciprocates to allow or
interrupt fluid communication between the pump and motor
chambers.
SEE OR SEARCH THIS CLASS, SUBCLASS:
555.1 and see the search notes therein, for other fields of
search for radially expansible and contractible pistons.
Subclass:
60
This subclass is indented under subclass 56. Apparatus in
which the piston has a fluid flow passage formed therein
which extends to opposite ends of said piston and valve means
carried by the piston for controlling said passage, said
valve means being positively mechanically moved by engagement
of said valve (or an element associated therewith) with a
stationary chamber portion.
Subclass:
61
This subclass is indented under the class definition.
Apparatus in which the pump unit or the intake or discharge
line thereof is buoyant or buoyantly supported so as to be
capable of floating on a body of liquid, the pump not being
operated by the rise and fall or flow of the liquid on which
it or its intake or discharge line floats.
SEE OR SEARCH CLASS:
415, Rotary Kinetic Fluid Motors or Pumps, subclass 7, for a
float supported or buoyant runner.
Subclass:
62
This subclass is indented under the class definition.
Apparatus comprising two pumping members or units, and means
being provided by which the pumped fluid is successively
acted upon by said members or units, and alternatively the
members or units are arranged in separate or branched flow
lines so as to take from a common or separate sources and
deliver to a common or separate outlets.
Subclass:
63
This subclass is indented under the class definition.
Apparatus having (1) signals, indicators, registers,
recorders, or gauges for indicating a condition of the pump
or pumped fluid or the position of a pump part such as a
piston, control member, valve, etc., such devices comprising
relatively movable, changeable or audible information giving
parts, or (2) transparent viewing means whereby the pump
operation or the condition of some part thereof may be
observed.
(1) Note. For classification under part (1) of this
definition there must be either an indicia or an audible or
visual signal or a means whose sole purpose is to indicate a
condition of the device. Relative to indicia there must be
graduations or markings disclosed. Where it is indicated
that the mere position of a pump part is indicative of a
condition of the pump (e.g., valve handle position indicated
direction of fluid flow) classification under the definition
does not result unless some cooperating indicia are
included.
Subclass:
64
This subclass is indented under the class definition.
Apparatus having a cellular member rotatable about an axis
with means to isolate therein and from its source a volume of
gas to be pumped, transfer said volume to a position where a
gaseous motive fluid may be admitted into said cellular
member for the purpose of increasing the pressure of said
volume while an interface is maintained between the two
gases, and then permit the pumped gas and the motive gas to
be exited from said cellular member each into a separate flow
path.
Subclass:
65
This subclass is indented under the class definition.
Apparatus in which one fluid is pumped or motivated by direct
contact or entrainment with another fluid, the motive fluid
before contact or entrainment being separate from the pump
fluid.
(1) Note. This definition does not include mere pulsation
dampeners or accumulators, i.e., a trapped, confined
compressible fluid which directly receives energy from
another fluid and returns the energy to the other fluid from
which it was received.
SEE OR SEARCH THIS CLASS, SUBCLASS:
64 for gas pressure exchange devices using a rotary cellular
member to transfer a gas to be pumped to a position where its
pressure may be increased by being contacted directly by a
gaseous motive fluid.
Subclass:
66
This subclass is indented under subclass 65. Apparatus in
which a driven element is provided to continuously and
unidirectionally move the motive fluid either as slugs or a
complete ring about an axis at a relatively high rate of
speed, said motive fluid directly contacting and imparting
energy to the fluid being pumped while in said movement about
an axis.
Subclass:
67
This subclass is indented under subclass 66. Apparatus in
which the driven element is provided with a passage passing
through the axis of rotation of the element at the point
where it is supported for rotation and said passage is
described as conveying motive fluid or fluid being pumped.
Subclass:
68
This subclass is indented under subclass 66. Apparatus in
which the motive fluid is rotated by the driven member at
such a speed and in such a manner as to form a peripheral
ring around the driven member within a surrounding casing.
Subclass:
69
This subclass is indented under subclass 68. Apparatus
including a second pump which is of a different basic type
from the liquid ring pump.
(1) Note. The liquid ring pump may be merely a priming pump
for the second pump.
Subclass:
70
This subclass is indented under subclass 66. Apparatus in
which a passage to supply motive fluid to be rotated by the
driven element is provided, said passage being closely
related to the axially remote portion of the rotary element.
Subclass:
71
This subclass is indented under subclass 66. Apparatus in
which a passage is provided to bring fluid to be pumped into
contact with motive fluid being moved about an axis, said
passage being closely related to axis of the driven element.
Subclass:
72
This subclass is indented under subclass 71. Apparatus in
which an outlet passage for pumped fluid is provided, said
passage being closely related to the axially remote portion
of the rotary element.
Subclass:
73
This subclass is indented under subclass 65. Apparatus
comprising a pumping chamber into which pump fluid is
alternately introduced and expelled, the pumping being
effected by burning of motive fluid and application of the
products of combustion to the chamber.
Subclass:
74
This subclass is indented under subclass 73. Apparatus
having a separate ignition means to ignite the motive fluid,
said ignition means being responsive to a condition of the
pump fluid.
Subclass:
75
This subclass is indented under subclass 73. Apparatus
including means to return a portion of the pump fluid to the
pump chamber and utilize the momentum thereof to effect
expulsion of a previously burned charge of motive fluid, and
compress the next incoming charge of motive fluid.
Subclass:
76
This subclass is indented under subclass 65. Apparatus
including a jet pump and an additional pump which includes a
mechanical impelling member (e.g., piston, rotor, etc.) to
generate the motive fluid supplied to the jet pump.
(1) Note. For the definition of a jet pump see this class
subclass 151.
(2) Note. The jet pump may have the sole disclosed use of
priming the motive fluid generating pump.
Subclass:
77
This subclass is indented under subclass 76. Apparatus in
which the motive fluid and the pumped fluid are of different
states (i.e., liquid and gas) and after entrainment the two
are separated and the motive fluid fed back to the
entrainment area as recirculated motive fluid.
(1) Note. This definition excludes a jet pump which primes
the other pump of air but then acts to pump liquid when the
other pump is primed.
Subclass:
78
This subclass is indented under subclass 76. Apparatus
provided with a rotary impeller which acts to project motive
fluid therefrom, the exit of the impeller acting as the
motive fluid nozzle and being disposed in the area of
entrainment.
(1) Note. This definition excludes an impeller whose
discharge is confined by a passage which acts as the motive
fluid nozzle. See subclass 84.
SEE OR SEARCH THIS CLASS, SUBCLASS:
66 for pumping one fluid by contact or entrainment with
another wherein the contact or entrainment occurs within a
rotary impeller.
Subclass:
79
This subclass is indented under subclass 76. Apparatus in
which at least a portion of the output of the jet pump is
supplied back to the intake of the motive fluid generating
pump.
Subclass:
80
This subclass is indented under subclass 79. Apparatus in
which the motive fluid generating pump comprises a pumping
member which has unidirectional rotary motion about a fixed
axis and acts to pump fluid by a centrifugal, centripetal or
screw effect.
Subclass:
81
This subclass is indented under subclass 80. Apparatus in
which the rotary nonexpansible chamber-type pump includes a
plurality of rotary pumping members at least a portion of the
pumped fluid passing successively from one pumping member to
the next.
Subclass:
82
This subclass is indented under subclass 80. Apparatus in
which the jet pump may be selectively placed in different
positions with respect to the rotary pump, usually for
adapting the apparatus to operate with a shallow well with
the jet proximate the rotary pumping member or with a deep
well with the jet positioned in the well remote from the
rotary pumping member.
Subclass:
83
This subclass is indented under subclass 80. Apparatus in
which the jet pump is located in close physical proximity to
the rotary pumping member of the diverse pump and is
contained within the housing structure (including inlet and
outlet connections) thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
82 for combined jet and rotary nonexpansible chamber-type
pumps in which the jet may be selectively located in the
rotary pump casing or remote therefrom.
Subclass:
84
This subclass is indented under subclass 76. Apparatus in
which the motive fluid generating pump comprises a pumping
member which has unidirectional rotary motion about a fixed
axis and acts to pump fluid by a centrifugal, centripetal or
screw effect.
Subclass:
85
This subclass is indented under subclass 65. Apparatus
comprising a plurality of discrete pumps of different basic
types.
(1) Note. This definition does not include a plurality of
pumps of different basic types if one is a mere auxiliary or
ancillary of the other (e.g., lubricant or cooling pump for
main pump). However, a pump whose sole disclosed function
may be to prime the other pump is not considered a mere
auxiliary and this combination is included in this
definition.
(2) Note. This definition includes as different basic-type
pumps which may both be of the fluid contact or entrainment
types such as, for example, jet pump and aerated column,
pneumatic displacement and jet, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
69 for diverse pumps one of which is the liquid ring type.
Subclass:
86
This subclass is indented under subclass 85. Apparatus in
which one of the pumps is of the type having a chamber or
container in which liquid to be pumped is collected and means
to apply gas pressure from an external source to the surface
of the liquid in said chamber or container to expel the
liquid therefrom.
(1) Note. The gas pressure may be merely atmospheric air
admitted to the chamber which has been filled by applying
vacuum thereto.
Subclass:
87
This subclass is indented under subclass 85. Apparatus in
which one of the pumps comprises a jet pump.
(1) Note. For the definition of a jet pump see this class
subclass 151.
SEE OR SEARCH THIS CLASS, SUBCLASS:
76 for a jet pump with a motive fluid generating pump.
Subclass:
88
This subclass is indented under subclass 87. Apparatus in
which the diverse pump is driven by an internal combustion
engine or fluid motor and the exhaust motive fluid or
combustion products from the motor are directed to the fluid
jet producing means of the jet pump to act as the motive
fluid therefor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
91 for an aerated column pump and a diverse pump which is
driven by an internal combustion engine or fluid motor the
exhaust of which provides the aeration fluid.
Subclass:
89
This subclass is indented under subclass 87. Apparatus in
which another of the pumps comprises a pumping member which
has unidirectional rotary motion about a fixed axis and acts
to pump fluid by centrifugal, centripetal or screw effect.
SEE OR SEARCH THIS CLASS, SUBCLASS:
80 for a jet pump with a rotary nonexpansible chamber-type
pump which generates the motive fluid for the jet.
Subclass:
90
This subclass is indented under subclass 85. Apparatus in
which one of the pumps is of the aerated column type.
(1) Note. For the definition of an aerated column pump see
this class subclass 108.
Subclass:
91
This subclass is indented under subclass 90. Apparatus in
which the diverse pump is driven by an internal combustion
engine or fluid motor, the exhaust motive fluid or combustion
products from the motor constituting the gas which is
injected into the liquid column.
SEE OR SEARCH THIS CLASS, SUBCLASS:
88 for a jet pump in which the jet motive fluid is the
exhaust from an internal combustion engine or fluid motor
which drives a pump different from the jet pump.
Subclass:
92
This subclass is indented under subclass 65. Apparatus in
which a fluid may be pumped by the direct action thereon of a
compressing chamber or container and a liquid forming part of
said compressing chamber or container, the body of liquid in
effect constituting a piston in said container whereby
relative movement between said liquid and said container
varies the volume of a space in said chamber or container to
pump the fluid.
Subclass:
93
This subclass is indented under subclass 92. Apparatus in
which at least one wall of said chamber means is moved
relative to a surface of said body of liquid to change the
volume of said chamber and thus pressurize the fluid confined
therein.
Subclass:
94
This subclass is indented under subclass 93. Apparatus in
which said chamber has a wall means having a spiral
configuration which extends along an axis, and upon rotation
about said axis said wall means is caused to move relative to
said liquid surface, move said fluid axially and change the
pressure of said fluid to be pumped which is confined in said
chamber.
Subclass:
95
This subclass is indented under subclass 93. Apparatus in
which the movement of the chamber operates a cyclically
operated valve or other cyclic control means for flow of the
body of liquid to or from the chamber.
Subclass:
96
This subclass is indented under subclass 93. Apparatus in
which the body of liquid is completely supported by the
structure which forms the chamber, said structure being moved
to cause said fluid to be pumped.
Subclass:
97
This subclass is indented under subclass 93. Apparatus in
which a plurality of chamber means are provided, said
chambers being moved relative to one another.
Subclass:
98
This subclass is indented under subclass 93. Apparatus in
which the chamber means is moved to-and-fro.
Subclass:
99
This subclass is indented under subclass 92. Apparatus in
which the liquid body comprises the element mercury.
Subclass:
100
This subclass is indented under subclass 92. Apparatus in
which the body of liquid is moved by the natural tide or wave
action of a large body of water in its natural situation.
Subclass:
101
This subclass is indented under subclass 92. Apparatus in
which relative height of the surface of the body of liquid in
said chamber cyclically operates a valve or other control
means to effect cyclic pumping.
Subclass:
102
This subclass is indented under subclass 101. Apparatus in
which a plurality of interrelated variable volume compressing
chambers are provided.
Subclass:
103
This subclass is indented under subclass 92. Apparatus in
which a plurality of contracting chambers are provided.
Subclass:
104
This subclass is indented under subclass 92. Apparatus in
which the body of liquid is set in motion and the inertia of
the body of liquid (i.e., the tendency to remain in motion or
at rest) being effective to produce the pumping action.
Subclass:
105
This subclass is indented under subclass 65. Apparatus in
which gaseous pumping fluid is reduced to the liquid state
with a resultant pressure change, which change causes the
pumped fluid to be motivated.
Subclass:
106
This subclass is indented under subclass 105. Apparatus
comprising plural pumping chambers which are so interrelated
as to produce alternate or successive pumping from the
chambers.
Subclass:
107
This subclass is indented under subclass 105. Apparatus with
means responsive to a condition of the pumping or pumped
fluid, said means controlling the flow of the pumping or
pumped fluid.
Subclass:
108
This subclass is indented under subclass 65. Apparatus
comprising a vertical column into which the liquid to be
pumped enters, with means to inject a gaseous motive fluid
below the level of the liquid accumulated therein which
effects a mixed mass of reduced specific gravity to elevate
said liquid with said gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
85 for means for pumping a fluid which employs a means to
aerate the fluid to reduce its specific gravity in
combination with another kind of pump means (e.g., jet,
etc.).
151 for jet pumps which employ a motive fluid moving at a
greater velocity than the fluid to be pumped thereby creating
a vacuum or reduced pressure area to motivate the pumped
fluid and wherein the motive fluid may subsequently become
entrained with the pumped fluid.
Subclass:
109
This subclass is indented under subclass 108. Apparatus
wherein said injection means comprises valve means which
opens and closes to control the gaseous motive fluid
injected.
Subclass:
110
This subclass is indented under subclass 109. Apparatus
having (1) fluid impinging means in the flow path of the
liquid to be pumped, to be acted upon thereby, or (2), means
responsive to the velocity of the moving liquid being pumped
comprising a restricted passageway.
Subclass:
111
This subclass is indented under subclass 109. Apparatus
wherein said valve means comprises plural valves mounted at
vertically spaced levels along said vertical column, and
having common mechanical or electrical actuating means to
actuate or permit the actuation of the valves in a particular
sequence.
Subclass:
112
This subclass is indented under subclass 109. Apparatus
wherein said valve means is actuated by an associated
flexible diaphragm or bellows-type sensing element which is
responsive to the pressure of either the liquid to be pumped,
or the gaseous pumping fluid.
Subclass:
113
This subclass is indented under subclass 112. Apparatus
wherein said valve means comprises a pilot valve and a main
valve, said pilot valve controlling actuating fluid to the
main valve to control actuation thereof, and said sensing
element controlling the actuation of said pilot valve.
Subclass:
114
This subclass is indented under subclass 109. Apparatus
wherein said valve means comprises a pilot valve and a main
valve, said main valve controlling the gaseous motive fluid
injection and said pilot valve controlling actuating fluid to
the main valve to control actuation thereof.
Subclass:
115
This subclass is indented under subclass 109. Apparatus
wherein said valve means is actuated in response to the
attainment of an absolute rate of flow, pressure or other
absolute condition of the motive fluid to control the flow of
motive fluid injected into the pumped fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
109 for devices having unbiased check valves in the gaseous
motive fluid line which merely acts to prevent the flow of
the liquid to be pumped back into the motive fluid line and
which, by their nature, permit flow of motive fluid to flow
therethrough whenever the pressure of the motive fluid
exceeds that of the pumped fluid.
110 for those devices having motive fluid injection control
valves which are controlled in response to the flow of the
pumped fluid and which may also be influenced by a motive
fluid condition.
117 for those devices having motive fluid injection control
valves which are actuated to permit the flow of motive fluid
into the pumped fluid in response to a static head build up
of pumped fluid.
Subclass:
116
This subclass is indented under subclass 109. Apparatus
comprising float means or other nonpressure sensitive means
responsive to the level of liquid accumulated, which float
means controls actuation of said valve means.
Subclass:
117
This subclass is indented under subclass 109. Apparatus
wherein said valve means comprises a valve member, said valve
member being biased closed by weight, spring, or other means,
and having means exposed to the accumulation of liquid within
said vertical column, which means, in response to the
pressure of the accumulated liquid, opens or tends to open
said valve member.
Subclass:
118
This subclass is indented under subclass 65. Apparatus in
which the fluid which is to be pumped is a liquid, and the
motive fluid is a gas, comprising a pumping chamber, a liquid
inlet and a liquid outlet through which the liquid is pumped
into and out of said chamber, means for supplying and
exhausting the gas to effect the pumping of said liquid, and
further having (1) pump means to supply or exhaust the gas or
(2), liquid level float means to effect control of the gas or
liquid entering or leaving said chamber or (3) means to
effect repetitive or cyclic pumping into and from said
chamber upon initiation of the pumping action.
(1) Note. The pumps disclosed in the patents contained
herein operate on a differential pressure principle, i.e., by
withdrawing the gaseous motive fluid which is in contact with
a portion of a confined liquid to be pumped, a higher
pressure, e.g., atmospheric, acting upon another portion of
said confined liquid effects movement and thus pumping
thereof.
(2) Note. Devices are included under this definition
wherein the pumping chamber is provided with a single means
by which both the liquid and the gas are exhausted.
(3) Note. Devices are classified under this definition
which have pumping chambers which are submerged in the liquid
to be pumped whereby the liquid is introduced into the
chamber by gravity.
Subclass:
119
This subclass is indented under subclass 118. Apparatus
having a pump means to supply or exhaust the gas, said pump
means comprising means to utilize a body of liquid, which
body of liquid is in contact with the gas, to compress or
expand said gas.
Subclass:
120
This subclass is indented under subclass 118. Apparatus
having pump means for said motive fluid, and including
condition responsive control means to directly control said
pump means.
Subclass:
121
This subclass is indented under subclass 118. Apparatus
comprising plural pumping chambers where the liquid output of
one chamber is the liquid input for another.
Subclass:
122
This subclass is indented under subclass 118. Apparatus
comprising plural pumping chambers interrelated by means to
effect alternate pumping from said chambers.
Subclass:
123
This subclass is indented under subclass 122. Apparatus
wherein said interrelated means is responsive to a condition
of the motive fluid or the fluid which is pumped in a first
chamber, to control the supplying or exhausting of motive
fluid to a second chamber.
Subclass:
124
This subclass is indented under subclass 123. Apparatus
wherein the condition is the weight of the fluid which is
pumped which has accumulated in the first chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
140 for devices having a movably mounted means adapted to
receive the fluid which is pumped and adapted to be moved in
response to a quantity of fluid received to control the
pumping operation.
Subclass:
125
This subclass is indented under subclass 123. Apparatus
wherein the condition is the liquid level of the fluid which
is pumped in the first chamber.
Subclass:
126
This subclass is indented under subclass 118. Apparatus
having means buoyed by the fluid which is pumped and
responsive to change in level thereof to control flow of the
fluid which is pumped or of the motive fluid into or from the
pumping chamber.
Subclass:
127
This subclass is indented under subclass 126. Apparatus
having more than one buoyant means in a single pumping
chamber.
Subclass:
128
This subclass is indented under subclass 126. Apparatus
wherein the flow of the fluid which is pumped or the flow of
the motive fluid is controlled by a valve means which is
controlled by the buoyed means through a pilot valve means.
Subclass:
129
This subclass is indented under subclass 126. Apparatus
wherein the flow to or from the pumping chamber of the motive
fluid or of the fluid which is pumped is controlled by said
buoyed means through an electrical actuating means.
Subclass:
130
This subclass is indented under subclass 126. Apparatus
wherein the admission of the motive fluid to the pumping
chamber is controlled by the buoyed means.
(1) Note. Apparatus having means to control the admission
of atmospheric air to a pumping chamber adapted to be placed
under a vacuum are classified in this and indented
subclasses.
Subclass:
131
This subclass is indented under subclass 130. Apparatus
wherein said buoyed means also controls the exhausting of the
motive fluid from the pumping chamber.
(1) Note. Apparatus having means to control the flow of
working fluid from the pumping chamber to a vacuum source are
classified in this and indented subclasses.
Subclass:
132
This subclass is indented under subclass 131. Apparatus
wherein said buoyed means also controls the pumped fluid
ejected from the pumping chamber.
Subclass:
133
This subclass is indented under subclass 131. Apparatus
wherein the float means initiates the operation of an over
center (e.g., spring, weight, etc.) valve actuator to control
the flow of motive fluid to and from the pumping chamber.
Subclass:
134
This subclass is indented under subclass 126. Apparatus
wherein the flow of motive fluid from the pumping chamber is
controlled by the buoyant means.
(1) Note. Devices having means to control the flow of
motive fluid from the pumping chamber to the vacuum source
are classified in this and indented subclasses.
Subclass:
135
This subclass is indented under subclass 134. Apparatus
wherein said buoyant means further controls the flow of fluid
which is pumped from the pumping chamber.
Subclass:
136
This subclass is indented under subclass 134. Apparatus
wherein said buoyant means further controls the flow of fluid
which is pumped into the pumping chamber.
Subclass:
137
This subclass is indented under subclass 118. Apparatus
wherein the pumping chamber alternately admits and ejects a
fluid which is pumped by controlling flow of the pumped fluid
or motive fluid by a mechanism motivated (1) in response to
an ambient or external pumped fluid or motive fluid condition
or (2) by the pumped fluid, motive fluid or other means.
Subclass:
138
This subclass is indented under subclass 137. Apparatus
wherein said means for admitting or ejecting the fluid which
is pumped to and from the pumping chamber comprises liquid
level sensing means at predetermined liquid level(s).
Subclass:
139
This subclass is indented under subclass 137. Apparatus
wherein the mechanism, by which the fluid which is pumped is
admitted to or ejected from the pump chamber, is motivated in
response to a condition of the pumped fluid.
Subclass:
140
This subclass is indented under subclass 139. Apparatus
having a movably mounted means adapted to receive the fluid
which is pumped and adapted to move in response to a quantity
of fluid received to control the mechanism by which the fluid
which is pumped is admitted to or ejected from the pump
chamber.
(1) Note. The pump chamber may be the movably mounted
means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
124 for devices having plural interrelated pumping chambers
which include a means to sense the weight received of fluid
which is pumped to control the pumping operation of the
chambers.
Subclass:
141
This subclass is indented under subclass 139. Apparatus
wherein the mechanism, by which the fluid which is pumped is
admitted to or ejected from the pumping chamber, is
controlled in response to the rate of flow of the fluid which
is pumped.
Subclass:
142
This subclass is indented under subclass 139. Apparatus
wherein the mechanism, by which the fluid which is pumped is
admitted to or ejected from the pumping chamber, is
controlled in response to the pressure of the fluid which is
pumped.
(1) Note. This subclass includes those devices which have
means which are described as sensing the "weight" of the
pumped fluid but which, in fact, sense pumped fluid pressure
at a given point in the pump chamber. However, a device
which includes a container into which pumped fluid is placed
and which measures a predetermined weight of fluid therein to
control the pumping operation is classified in subclass 139.
SEE OR SEARCH THIS CLASS, SUBCLASS:
143 for devices wherein repetitive pumping is effected in
response to a sensed motive fluid pressure or pressure
differential.
Subclass:
143
This subclass is indented under subclass 137. Apparatus
wherein the alternate admission and ejection of the fluid
which is pumped into and from the pump chamber results from
the alternate admission and withdrawal of the motive fluid to
or from the pump chamber said motive fluid being controlled
by valve means responsive to the motive fluid pressure.
(1) Note. The pressure responsive means does not include a
mere pressure responsive check valve in the motive fluid
inlet or outlet of the pumping chamber.
Subclass:
144
This subclass is indented under subclass 137. Apparatus in
which said means for effecting the admission and ejection of
the pumped fluid from the pump chamber is a valve means for
supplying or exhausting the gaseous pumping fluid to said
chamber and having additional means correlating control of
said valve means with the operation of a means generating
said motive fluid.
Subclass:
145
This subclass is indented under subclass 137. Apparatus
wherein said means for effecting the admission and ejection
of the pumped fluid from the pump chamber comprises valve
means which correlates the supplying and exhausting of motive
fluid to and from the pumping chamber.
Subclass:
146
This subclass is indented under subclass 145. Apparatus
which includes a pilot valve for controlling said valve
means.
Subclass:
147
This subclass is indented under subclass 145. Apparatus
wherein said valve means comprises a single valve member to
control both supply and exhaust.
Subclass:
148
This subclass is indented under subclass 118. Apparatus
having the pump means, (i.e., vacuum generator), to withdraw
the gaseous motive fluid from the pumping chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
119 for a device having a vacuum generator comprising a
liquid the surface of which communicates with the motive
fluid.
Subclass:
149
This subclass is indented under subclass 148. Apparatus
including a pump means (i.e., pressure generator), to supply
pumping fluid to said pumping chamber.
Subclass:
150
This subclass is indented under subclass 65. Apparatus
comprising a vertically disposed tube through which motive
fluid drops freely under the influence of gravity, contact
with or entrainment of the pumped fluid being made in the
tube.
Subclass:
151
This subclass is indented under subclass 65. Apparatus in
which motive and pumped fluids are brought into intimate
contact in an enclosed flow path, the motive fluid having a
higher velocity than the pumped fluid and imparting energy to
the pumped fluid by the action of entrainment and frictional
contact.
SEE OR SEARCH THIS CLASS, SUBCLASS:
76 for jet pumps having a motive fluid generating pump.
87 for diverse pumps one of which is a jet pump.
SEE OR SEARCH CLASS:
137, Fluid Handling, 888 for systems having multiple inlets
and a single outlet with means to promote mixing or combining
of plural diverse fluids and subclass 842, for a "turbulence
amplifier" having similar structure. If the system is
disclosed as one of the fluids acting to pump the other
classification is in this class (417).
261, Gas and Liquid Contact Apparatus, 76 for injector-type
gas and liquid contact apparatus where there is a mutual
exchange of properties between the fluids.
Subclass:
152
This subclass is indented under subclass 151. Apparatus in
which the pump is adapted to be connected to or enclosed
within a space which is to be evacuated to a high vacuum, the
motive fluid being in the form of a vapor which acts to
remove fluid diffusing out of said space, the motive fluid
acting to remove the fluid by entrainment and condensation.
(1) Note. The vapor is generally oil or mercury which is
generated in a boiler.
Subclass:
153
This subclass is indented under subclass 152. Apparatus in
which means are provided to cool the pump, usually the outer
walls or nozzle thereof or heat insulation means are provided
to prevent heat transfer from the motive fluid to the zone
being evacuated.
Subclass:
154
This subclass is indented under subclass 152. Apparatus in
which there is a vertically disposed conduit which the motive
fluid vapor flows upwardly from a vapor generator (i.e.,
boiler) the motive fluid being reversed and directed
transversely and downwardly from the conduit into the
entrainment area, the motive fluid upon condensation flowing
back to the generator.
Subclass:
155
This subclass is indented under subclass 151. Apparatus in
which the combining tube of the jet pump is a flue or stack
of a furnace and the jet acts to increase the draft effect of
the flue or stack.
(1) Note. Where the operation of the device necessarily
involves a treatment of the flue gases, such as the
entrainment of air or air and steam to effect combustion of
unconsumed particles of fuel, or where any treatment of the
fuel gases not merely a pumping effect is involved, or where
the combination embraces elements of a furnace mechanism of
greater scope than herein defined, the device is classified
in appropriate subclasses of Class 110, Furnaces; see
especially subclasses 150, 160, and indented subclass.
Compare Class 261, Gas and Liquid Contact Apparatus, subclass
24, and indented subclasses.
Subclass:
156
This subclass is indented under subclass 155. Apparatus in
which the pumped fluid contains sparks or cinders and means
are provided to separate out or reduce the size of the sparks
or cinders prior to discharge from the pump.
SEE OR SEARCH CLASS:
96, Gas Separation: Apparatus, appropriate subclasses, for
spark arresters, per se. When a spark arrester is combined
with a jet pump it is considered to be a perfecting feature
of the pump and is classified in Class 417.
Subclass:
157
This subclass is indented under subclass 155. Apparatus
including means for controlling the operation of the jet pump
or the flow of motive or pumped fluid to or from the jet pump
by means of a valve or throttling action.
Subclass:
158
This subclass is indented under subclass 151. Apparatus
including means to energize or motivate the motive fluid of
the jet pump.
SEE OR SEARCH THIS CLASS, SUBCLASS:
76 for a jet pump with a motive fluid generating pump.
152 for vapor condensation vacuum diffusion-type pumps with
motive fluid generating means.
Subclass:
159
This subclass is indented under subclass 158. Apparatus in
which the means to energize or motivate the motive fluid is
an internal combustion engine.
(1) Note. The motive fluid may be fluid exhausted by the
engine or drawn into the intake manifold or otherwise
energized by the engine.
Subclass:
160
This subclass is indented under subclass 151. Apparatus
provided with means to remove accumulated foreign material
from the jet pump or its connected flow lines by means of
applying motive fluid to the pump by a route other than its
normal flow path to the entrainment area or by means of a
fluid other than the motive or pumped fluid which is applied
to the pump.
Subclass:
161
This subclass is indented under subclass 151. Apparatus in
which the pumped fluid flows toward the entrainment area
along a given path and motive fluid is projected radially of
the given path in the form of a disc-like sheet, the pumped
fluid being entrained by the disc-like sheet and during
entrainment flowing outwardly from the given path.
SEE OR SEARCH THIS CLASS, SUBCLASS:
78 for radial disc-type jet pumps in which the entrainment
is at the exit of a centrifugal impeller.
Subclass:
162
This subclass is indented under subclass 151. Apparatus
having a valved waste passage to conduct pumped fluid which
has been entrained away from the device and is also provided
with a valve to control flow of motive fluid to the jet,
there being means provided which upon actuation of one of the
valves causes or prevents actuation of the other.
Subclass:
163
This subclass is indented under subclass 151. Apparatus in
which a first stream of motive fluid acts to entrain pumped
fluid and then a second stream of motive fluid from the same
or different sources as the first acts to entrain the
combined motive and pumped fluid from the first entrainment.
Subclass:
164
This subclass is indented under subclass 163. Apparatus in
which heat exchange apparatus is provided to remove heat from
the combined motive and pumped fluid from the first
entrainment before said fluid is acted upon by the second
motive fluid stream.
Subclass:
165
This subclass is indented under subclass 163. Apparatus in
which both the first and second streams of motive fluid are
provided with separate and distinct valves to individually
control the flow thereof.
(1) Note. The separate and distinct valves may be unitary
with one another so long as there are distinct valve portions
which control each of the motive fluid flow paths.
Subclass:
166
This subclass is indented under subclass 165. Apparatus in
which the separate and distinct valves are so related that
upon actuation first one valve controls its motive fluid flow
path and then the other controls its motive fluid flow path
in sequence.
Subclass:
167
This subclass is indented under subclass 163. Apparatus in
which one of the motive fluid streams is projected centrally
so as to entrain an annular stream of pumped fluid outwardly
thereof and another motive fluid stream is in the form of an
annulus so as to entrain a stream of pumped fluid in the
center of the annulus.
Subclass:
168
This subclass is indented under subclass 163. Apparatus in
which one of the motive fluid streams is confined to a
conduit terminating in a nozzle and the other motive fluid
stream is directed around the circumference of the conduit at
the point at which it entrains pumped fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
154 for vapor condensation vacuum diffusion-type pumps with
reverse flow jets from a vertical stack rising from a motive
fluid generator.
Subclass:
169
This subclass is indented under subclass 163. Apparatus in
which the motive fluid streams in their flow to the
entrainment nozzle are parallel and spaced laterally from one
another.
Subclass:
170
This subclass is indented under subclass 163. Apparatus in
which the first and second motive fluid flows at the points
of entrainment are substantially in line with one another.
(1) Note. The motive fluid streams may be of annular form
with the annuli having a common central axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
154 for vapor condensation vacuum diffusion-type pumps with
plural reverse flow jets from a vertical stack rising from a
motive fluid generator.
Subclass:
171
This subclass is indented under subclass 151. Apparatus in
which the motive fluid is introduced in a plane at right
angles to and tangentially of the inflow of pumped fluid
establishing a vortex-type entrainment within or without the
rotating motive fluid.
Subclass:
172
This subclass is indented under subclass 151. Apparatus
provided with a conduit for supplying motive fluid to the
entrainment area and a conduit for conducting motive and
pumped fluid from the entrainment area, one conduit being
concentrically disposed within the other. The direction of
flow of the motive fluid being opposite to the direction of
flow of the combined motive and pumped fluid.
Subclass:
173
This subclass is indented under subclass 151. Apparatus
combined with heat exchange means to reduce the temperature
of the motive fluid or the pumped fluid or both other than by
a mere direct interchange of heat between the motive and
pumped fluids.
(1) Note. This definition excludes the injection of one
fluid into another fluid even though for the sole disclosed
purpose of cooling if the injected fluid has a pumping effect
on the other fluid by a jet or entrainment action (i.e.,
transfer or velocity energy).
SEE OR SEARCH THIS CLASS, SUBCLASS:
153 for vapor condensation vacuum diffusion-type pumps with
cooling means.
164 for successive introduction of motive fluid into the
pumped fluid with cooling means between the stages of
pumping.
Subclass:
174
This subclass is indented under subclass 151. Apparatus in
which motive fluid acts to entrain pumped fluid and then the
combined motive and pumped fluid stream acts to further
entrain additional fluid to be pumped at a point downstream
of the first entrainment.
Subclass:
175
This subclass is indented under subclass 151. Apparatus in
which an additional jet device is provided with discharges to
waste and is so connected as to draw the pumped fluid into
the first jet pump to prime same or to remove pumped fluid
from an overflow or waste chamber of the first jet.
Subclass:
176
This subclass is indented under subclass 151. Apparatus
having a plurality of motive fluid nozzles, the motive fluid
from each acting to entrain pumped fluid, the combined motive
and pumped fluid from each entrainment traveling in a
separate downstream conduit or combining tube, the
entrainments being in parallel with one another; i.e., each
motive fluid stream is separate from the others and acts to
entrain separate flows of pump fluid.
(1) Note. The pumped fluid may originate in a common pipe
or conduit and the outputs from the downstream conduits may
combine into a single flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
163 for the successive introduction of motive fluid to a
single pumped fluid stream.
174 for a single motive fluid stream which successively
entrains pumped fluid.
179 for plural motive fluid jets for a single entrainment,
i.e., with a single combining tube.
Subclass:
177
This subclass is indented under subclass 151. Apparatus in
which the motive fluid is projected into the entrainment area
in the form of a continuous annulus and pumped fluid is
entrained both outwardly and inwardly of the motive fluid
annulus.
Subclass:
178
This subclass is indented under subclass 151. Apparatus in
which there is provided within the apparatus a plurality of
alternate flow confining segments (e.g., nozzles, combining
tubes, etc.) and means to permit one of the segments to be
adjusted into use position to the exclusion of another from
use position.
Subclass:
179
This subclass is indented under subclass 151. Apparatus in
which in a single zone of entrainment of pumped fluid (i.e.,
single inflow of pumped fluid and single outflow of combined
pumped and motive fluid) there is provided means to project a
plurality of separate motive fluid streams or different
sources of motive fluid are provided for delivery through the
same motive fluid projecting means.
(1) Note. The separate motive fluid streams or sources may
be used simultaneously or alternately.
SEE OR SEARCH THIS CLASS, SUBCLASS:
163 for successive introduction of motive fluid into the
pumped fluid along the path of flow of the pumped fluid.
174 for successive entrainment of pumped fluid by a single
motive fluid flow.
176 for plural motive fluid jets having separate combining
tubes from the jets.
Subclass:
180
This subclass is indented under subclass 179. Apparatus in
which means are provided by which at least one of the motive
fluid jets or sources may be individually controlled.
Subclass:
181
This subclass is indented under subclass 151. Apparatus in
which the jet pump unit is adapted to be connected by a
readily detachable means to a spigot or a flexible tube from
which motive fluid for the jet is supplied.
Subclass:
182
This subclass is indented under subclass 151. Apparatus
including means for controlling the operation of the jet pump
or the flow of motive or pumped fluid to or from the jet pump
by means of a valve or throttling action.
SEE OR SEARCH THIS CLASS, SUBCLASS:
118 for successive introduction of motive fluid into the
pumped fluid with individually controlled motive fluid
flows.
157 for jet pumps with regulation in which the combining
tube is the flue or stack of a furnace for interrelated
overflow and motive fluid valves.
162 for interrelated overflow and motive fluid valves.
179 for plural motive fluid jets or sources for a single
entrainment with individual or relative control of the jets
or sources.
Subclass:
182.5
This subclass is indented under subclass 182. Apparatus in
which the controlling means acts in response to the level of
pump fluid.
Subclass:
183
This subclass is indented under subclass 182. Apparatus in
which the control is effected by a change in the relative
axial positions of the motive fluid nozzle and the conduit
which receives the combined motive and pumped fluid from the
entrainment area.
Subclass:
184
This subclass is indented under subclass 183. Apparatus in
which the change in the relative axial positions of the
nozzle and conduit is in response to variation in fluid
pressure caused by the operation of the jet pump.
Subclass:
185
This subclass is indented under subclass 182. Apparatus in
which the controlling means is located in the output flow
line downstream from the entrainment area.
(1) Note. The controlling means is in the main outflow line
from the pumps and does not merely control a passage to
waste.
SEE OR SEARCH THIS CLASS, SUBCLASS:
192 for a pressure controlled overflow line downstream of
the entrainment area.
Subclass:
186
This subclass is indented under subclass 182. Apparatus in
which the motive fluid is directed into the entrainment area
by a nozzle and valve means are provided which when actuated
cause all or a portion of the motive fluid to be diverted
from the nozzle.
(1) Note. The diversion of the motive fluid may be merely
around the nozzle to reenter the pump downstream of the
normal entrainment area or the diversion may be away from the
pump as, for example, into the normal pumped fluid inlet
line.
SEE OR SEARCH THIS CLASS, SUBCLASS:
185 for main line control downstream of the entrainment area
which may cause an increase in motive fluid pressure so as to
by-pass.
Subclass:
187
This subclass is indented under subclass 182. Apparatus in
which the controlling means is positioned in the motive fluid
inlet line upstream of the entrainment area or at the point
of discharge into the entrainment area.
SEE OR SEARCH THIS CLASS, SUBCLASS:
162 for interrelated motive fluid and overflow valves.
165 for successive introduction of motive fluid into the
pumped fluid with individually controlled motive fluid
flows.
179 for plural motive fluid jets or sources for a single
entrainment with individual or relative control of the jets
or sources.
186 for controlling means to by-pass motive fluid from the
entrainment nozzle.
Subclass:
188
This subclass is indented under subclass 187. Apparatus
including controlling means in the pumped fluid inlet line
upstream of the entrainment area, means being provided which
interrelates the motive fluid and pumped fluid controlling
means such that when one is actuated the other is necessarily
controlled.
Subclass:
189
This subclass is indented under subclass 187. Apparatus in
which the motive fluid controlling means acts in response to
variation of fluid pressure which is incident to the
operation of the jet pump.
Subclass:
190
This subclass is indented under subclass 182. Apparatus in
which the controlling means is positioned in the pumped fluid
inlet line upstream of the entrainment area.
SEE OR SEARCH THIS CLASS, SUBCLASS:
188 for interrelated motive fluid and pumped fluid
controls.
Subclass:
191
This subclass is indented under subclass 190. Apparatus in
which the pumped fluid controlling means acts in response to
variation of fluid pressure which is caused by the operation
of the jet pump.
Subclass:
192
This subclass is indented under subclass 182. Apparatus in
which the controlling means controls the flow to waste of the
combined motive and pumped fluid downstream of the
entrainment area, said controlling means acting in response
to variation of fluid pressure caused by the operation of the
jet pump.
Subclass:
193
This subclass is indented under subclass 192. Apparatus in
which the controlling means comprises an axially movable
section of the flow conduit or a movable wall portion of the
conduit downstream of the entrainment area.
SEE OR SEARCH THIS CLASS, SUBCLASS:
184 for a movable combining tube which shifts in response to
fluid flow and in shifting varies the axial relationship
between the motive fluid nozzle and the entrance to the
combining tube.
Subclass:
194
This subclass is indented under subclass 151. Apparatus
having means to impart to the pumped fluid a whirling or
helical motion prior to its being entrained by the motive
fluid.
Subclass:
195
This subclass is indented under subclass 151. Apparatus in
which a claim includes a recitation of the material of which
the jet pump or a part thereof is made.
SEE OR SEARCH THIS CLASS, SUBCLASS:
55 for processes of pumping by contact or entrainment
utilizing a specific motive fluid.
Subclass:
196
This subclass is indented under subclass 151. Apparatus in
which some portion of the flow confining means of the jet
pump is represented in a claim by a mathematical formula or
equation or some specific proportions or dimensions of the
parts are set forth.
Subclass:
197
This subclass is indented under subclass 151. Apparatus in
which the motive fluid is supplied as an annular stream which
entrains the pumped fluid centrally thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
167 for successive introduction of motive fluid to act on
the pumped fluid, one of the motive fluid streams being
peripherally supplied.
177 for an annular motive fluid stream which entrains pumped
fluid both exterior and interior of the annulus.
Subclass:
198
This subclass is indented under subclass 151. Apparatus in
which a claim includes details of the construction or shape
of the nozzle from which motive fluid is projected into the
entrainment area.
(1) Note. This subclass includes specific nozzle shapes to
provide a particular shape or pattern of motive fluid
projection.
SEE OR SEARCH THIS CLASS, SUBCLASS:
179 for plural motive fluid jets into a single entrainment
area including a nozzle which is subdivided to provide a
plurality of distinct flow paths.
SEE OR SEARCH CLASS:
239, Fluid Sprinkling, Spraying, and Diffusing, appropriate
subclasses for nozzle, per se.
Subclass:
199.1
DIVERSE PUMPS:
This subclass is indented under the class definition.
Apparatus comprising a plurality of discrete pumps of
different basic types.
(1) Note. This definition does not include a plurality of
pumps of different basic types if one is a mere auxiliary or
ancillary of the other (e.g., lubricant or cooling water or
condensate removal pump for main pump).
(2) Note. This definition includes diverse pumps wherein
one of the pumps is disclosed merely as priming another, the
priming pump in this instance not being considered merely
ancillary to the other pump.
(3) Note. Mere difference in size or shape, etc., of the
same basic type of pump is not included under this
definition.
(4) Note. The following are exemplary of different basic
types of pumps: (a) Rotary expansible chamber; (b) Rotary
nonexpansible chamber; (c) Reciprocating working member
(piston or cylinder); (d) Collapsible chamber (e.g.,
diaphragm, bellows); and (e) Hydraulic ram.
(5) Note. A patent will be classified as an original in
this or indented subclasses if the pumps are disclosed as
diverse, but a claim recites only one of the pumps
specifically. On the other hand a plurality of pumps which
are disclosed as diverse but are claimed broadly will not be
classified as an original under the definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
69 for diverse pumps one of which is of the liquid ring
type.
76 for jet pumps with motive fluid generating pumps.
85 for diverse pumps at least one of which is of the type in
which fluid is pumped by contact or entrainment with
another.
SEE OR SEARCH CLASS:
418, Rotary Expansible Chamber Devices, subclass 3 for
diverse rotary expansible chamber-type pumps.
Subclass:
199.2
Priming and venting:
This subclass is indented under subclass 199.1. Apparatus
wherein one of the pumps supplies fluid to the pumping
chamber of the main pump which is supplied with a valve to
exhaust the fluid from the pumping chamber.
Subclass:
200
This subclass is indented under subclass 199.1. Apparatus in
which one of the pumps is priming or maintaining the other
pump primed and including means responsive to the level of
pump fluid in some part of the system to control the pump
fluid or modify the operation of at least one of the pumps.
(1) Note. The operation of the pump is considered to be
modified, for example, if the drive means is controlled, the
capacity is varied, or a valve is operated to bypass the
discharge, to draw from a different source, to deliver to a
different place or vary the inlet or outlet.
Subclass:
201
This subclass is indented under subclass 199.1. Apparatus in
which one of the diverse pumps comprises a pumping member
which has unidirectional rotary motion about a fixed axis and
acts to pump fluid by a centrifugal, centripetal or screw
effect.
SEE OR SEARCH THIS CLASS, SUBCLASS:
200 for the combination of a centrifugal pump and a diverse
pump for priming the centrifugal pump with liquid level
responsive control of one of the pumps or the pump fluid.
Subclass:
202
This subclass is indented under subclass 201. Apparatus
having means to modify the operation of another of the pumps
in response to a condition of the rotary nonexpansible
chamber-type pump.
(1) Note. The operation of the pump is considered to be
modified, for example, if the drive means is controlled, the
capacity is varied, or a valve is operated to bypass the
discharge, to draw from a different source, to deliver to a
different place or vary the inlet or outlet.
(2) Note. The condition of the pump to which the control
responds may be, for example, pressure, flow, loss of prime,
etc.
Subclass:
203
This subclass is indented under subclass 201. Apparatus in
which the diverse pumps are arranged such that the entire or
a substantial portion of the output of one is directed to the
second so as to be serially acted upon thereby, the rotary
nonexpansible chamber-type pump being upstream of the diverse
pump so as to feed fluid thereto with the diverse pump acting
as a second stage.
Subclass:
204
This subclass is indented under subclass 199.1. Apparatus in
which one of the pumps is of the rotary expansible chamber
type having a partition (i.e., vane or abutment) or cylinder
which moves incident to rotation of the pump, the partition
or cylinder constituting or being directly connected to a
piston which reciprocates upon movement of the partition or
cylinder, the piston operating within a chamber and forming
therewith a reciprocating expansible chamber pump.
Subclass:
205
This subclass is indented under subclass 199.1. Apparatus in
which the diverse pumps are arranged such that the output of
one is directed to the inlet of the second so as to be
serially acted upon thereby.
SEE OR SEARCH THIS CLASS, SUBCLASS:
203 for a centrifugal pump delivering fluid to a diverse
pump in series therewith.
Subclass:
206
This subclass is indented under subclass 205. Apparatus in
which the fluid is acted upon by a rotary expansible chamber-
type pump and then by an expansible chamber- type pump having
a pumping member which performs its pumping function by a
reciprocating (including oscillating) motion.
(1) Note. A rotary expansible chamber- type pump under this
definition is as defined in Class 418.
(2) Note. Flexible wall pumping members (e.g., diaphragm,
bellows) are not considered to have reciprocating motion
under this definition.
Subclass:
207
This subclass is indented under the class definition.
Apparatus in which a pumping action is obtained by the direct
application of heat to the fluid to be pumped.
Subclass:
208
This subclass is indented under subclass 207. Apparatus in
which the fluid to be pumped is a liquid, the application of
heat to the liquid causing at least a portion thereof to
vaporize, the vapor pressure then impelling the liquid
through an outlet.
Subclass:
209
This subclass is indented under subclass 208. Apparatus
which includes valve means which controls flow of the fluid
which is pumped into a chamber means in which said fluid is
vaporized, said valve means being closed by a buildup in
pressure during vaporization of said fluid and opened by a
decrease in pressure after the vapor or fluid has been
expelled from said chamber.
Subclass:
210
This subclass is indented under the class definition.
Apparatus in which there is provided biasing means movable
relative to a reciprocating-type pumping member, said biasing
means receiving energy from the pump fluid and serving to
bias the pumping member in opposite directions over different
portions of pumping member movement in one reciprocatory
stroke direction.
Subclass:
211
This subclass is indented under the class definition.
Apparatus in which the pump is adapted to be mounted upon or
attached to a device which is subject to or adapted to
produce motion or vibration, the pump having a relatively
movable pumping member, the relative movement of which is
caused by the inertia thereof and the motion or vibration of
the device or by the inertia of a separate member which is
connected to or operatively associated with the pumping
member.
(1) Note. The device is usually a vehicle.
Subclass:
211.5
This subclass is indented under the class definition.
Apparatus in which the pump or means for transmitting motion
to the pump from a source of power is provided with control
means for either (1) interrupting motion of the pump (e.g.,
clutch, lock, etc.), (2) varying the rate of motion of the
pump (e.g., brake, dashpot, adjustable gearing, etc.), (3)
changing the swept volume of displacement of an expansible
chamber-type pump, or (4) changing the volumetric capacity of
an expansible chamber- type pump (e.g., clearance control);
said control means being operable in response to the level of
pump fluid.
Subclass:
212
This subclass is indented under the class definition.
Apparatus in which the pump or means for transmitting motion
to the pump from a source of power is provided with control
means for either (1) interrupting motion of the pump (e.g.,
clutch, lock, etc.), (2) varying the rate of motion of the
pump (e.g., brake, dashpot, adjustable gearing, etc.), or (3)
changing the swept volume of the pumping member of an
expansible chamber-type pump (e.g., stroke control); said
control means being operable in response to a sensed
condition of the pump or pumped fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
211.5 for liquid level responsive control of pump
displacement, volumetric capacity or drive transmission.
274 for means for varying the volumetric capacity of an
expansible chamber-type pump in response to a sensed
condition, the capacity varying means not affecting pumping
member displacement (e.g., clearance control).
Subclass:
213
This subclass is indented under subclass 212. Apparatus
combined with fluid flow control means for varying the flow
of pumped fluid to or from the pump or pump chamber, or
controlling a relief or bypass which means is also operated
by sensing the occurrence of a condition or a change in
condition.
(1) Note. See the definition and notes under subclass 279,
which notes are also applicable to this subclass.
Subclass:
214
This subclass is indented under subclass 212. Apparatus in
which the control means comprises a positive lock, friction
brake, fluid retarder or similar device which will act to
prevent or restrict movement of the pumping member by acting
directly thereon or on a part directly connected thereto.
Subclass:
215
This subclass is indented under subclass 212. Apparatus in
which the pump comprises an expansible chamber-type pump
having a plurality of relatively movable pumping elements
working in a single pump chamber and relatively movable
driving elements are connected to the pumping elements so
that they may be driven into the pumping chamber together,
e.g., in phase, or at different times, e.g., out of phase, to
vary the volume of fluid pumped; the control means acting to
change the relationship, e.g., phasing, between the driving
elements to vary the output of the pump.
Subclass:
216
This subclass is indented under subclass 212. Apparatus
comprising a plurality of pumping units wherein the control
means effects a change in the operating characteristics of
one unit relative to another.
Subclass:
217
This subclass is indented under subclass 212. Apparatus in
which the pump has a mechanical pumping member (e.g., rotor
or piston) driven from a rotary driving element and an inlet
and an outlet; means being provided to change the flow of the
pumped fluid without altering the direction of rotation of
the driving element, i.e., the inlet under one condition of
operation becomes the outlet under the other condition of
operation and vice versa; the control means acting on the
reversing means to cause its operation.
Subclass:
218
This subclass is indented under subclass 212. Apparatus in
which the pump is of the expansible chamber-type, i.e.,
having a relatively movable pumping member and chamber, and
including a mechanical movement having relatively movable
parts in which the driving relationship is varied by an
adjustable element (e.g., cam, eccentric, link, etc.,) which
is moved relative to another part.
Subclass:
219
This subclass is indented under subclass 218. Apparatus
wherein the relatively movable pumping member and chamber
comprise a rotor and an encompassing movable stator in which
movement of the stator causes the pumping member to move
radially of the axis of rotation of the rotor resulting in a
change in the stroke of the pumping member or a change in
displacement of the pump.
Subclass:
220
This subclass is indented under subclass 219. Apparatus in
which the pump is a rotary pump of the expansible chamber
type.
SEE OR SEARCH CLASS:
418, Rotary Expansible Chamber Devices, 24, for rotary
expansible chamber motors or pumps in which the capacity is
varied by a movable member (e.g., stator, etc.), the member
being moved by the direct application of working fluid
thereto, there being no condition responsive valving
controlling the application or release of fluid to or from
the member.
Subclass:
221
This subclass is indented under subclass 218. Apparatus
wherein the cam or eccentric forms a part of a rotary drive
in which a cooperating cam follower or eccentric strap moves
radially of the shaft on which the cam or eccentric is
mounted or carried.
(1) Note. A crankshaft having an adjustable throw on which
a working member, a pitman, or member connected to the
working member is mounted is included under this definition
as the equivalent of an eccentric and strap.
Subclass:
222.1
This subclass is indented under subclass 218. Apparatus in
which the adjustable element is a cam which forms part of a
rotary drive means and the camming face of the cam extends
transversely of the axis of rotation of the rotary drive
means so that the cam follower moves parallel to such axis.
Subclass:
222.2
This subclass is indented under subclass 222.1. Apparatus in
which the adjustable element is operated in response to
pressure introduced into the sump.
Subclass:
223
This subclass is indented under subclass 212. Apparatus
including a mechanical movement having relatively movable
parts comprising elements of the drive which can be engaged
and separated to start and stop the pump while permitting the
power source to operate continuously.
Subclass:
225
This subclass is indented under the class definition.
Apparatus in which there is a source of fluid having an
initial pressure or velocity head, and means are provided
which utilize the energy of said source fluid to boost the
head of a first portion thereof to a higher value, by
reducing the head of a second portion of said source fluid.
(1) Note. This definition does not include motor driven
pumps which pump from an unconfined body of fluid in which
the motor is driven by energy derived from the unconfined
body of fluid (e.g., fluid current, tide and wave motor,
etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
330 for tide and wave motor driven pumps.
334 for fluid current motor drive pumps.
Subclass:
226
This subclass is indented under subclass 225. Apparatus in
which the source fluid has an initial velocity head, said
means including plural fluid outlets, one of said outlets
being a valve controlled waste outlet, whereupon the sudden
closing of said valve effects discharge or a first portion of
said source liquid through the other of said outlets at a
higher head, while a second portion has passed to waste at a
lower head.
Subclass:
227
This subclass is indented under subclass 226. Apparatus
including two or more valve controlled waste outlets, the
source fluid flowing to each waste outlet through a separate
conduit.
Subclass:
228
This subclass is indented under the class definition.
Apparatus in which the pump or some part thereof (e.g.,
cylinder, bearing, drive motor) is cooled or lubricated by
the feed or circulation of a separate fluid (i.e., not the
pumped fluid), and means to control the flow of or modify a
condition of said separate fluid (e.g., temperature), said
means being operated by a separate sensing means which is
responsive to a condition or a change of condition other than
a manual control.
Subclass:
229
This subclass is indented under the class definition.
Apparatus in which the pump is mounted on or proximate to an
object and is powered by the relative motion of movable parts
of the object or by motion of the object as a whole, the
object being of special construction or adaptation to perform
a particular function other than (1) a supporting function,
or (2) the pumping which forms the basic subject matter of
this class.
(1) Note. This definition includes a pump operator in the
form of a treadle, rail section, etc., which is actuated by
the passing of a vehicle thereover.
Subclass:
230
This subclass is indented under subclass 229. Apparatus in
which the object is a device for supporting the weight of a
person in a seated position, wherein the pumped fluid is
directed to elsewhere other than toward a body part of a
seated occupant.
SEE OR SEARCH CLASS:
297, Chairs and Seats, subclass 180.16 for chairs combined
with pumps in which the pumped fluid is directed toward a
body part of the occupant of the chair.
Subclass:
231
This subclass is indented under subclass 229. Apparatus in
which the pump is mounted on or attached to a vehicle and is
driven incident to movement of the vehicle or the relative
motion of vehicle parts.
(1) Note. The pump may be attached to the vehicle only when
it is desired to operate the pump. For example, this
definition includes those devices in which a vehicle drive
wheel is elevated and a pump attached thereto.
(2) Note. The pump is considered to be combined with
vehicle under this definition if it is driven by some part of
the vehicle other than directly by the vehicle motor. For
example, this definition includes those devices in which the
pump is driven by a vehicle wheel or axle, transmission,
fly-wheel or tractor power take-off shaft.
SEE OR SEARCH THIS CLASS, SUBCLASS:
211 for vehicle mounted pumps in which the pump has an
inertia-type pumping member operated by the vibration or
relative movement of parts of the vehicle.
234 for pumps supported on wheels or a wheeled frame for
portability.
364 for pumps which are driven by internal combustion
engines.
Subclass:
232
This subclass is indented under subclass 231. Apparatus in
which the vehicle has attached thereto a scoop adapted to be
immersed in a body of liquid located outside the vehicle,
liquid being induced to flow through the scoop due to motion
of the vehicle and the inertia of the body of liquid.
Subclass:
233
This subclass is indented under subclass 231. Apparatus in
which the pump is driven by the rotating motion of a wheel or
axle of the vehicle.
(1) Note. This definition does not include those devices in
which a ground engaging wheel is provided solely to drive the
pump and has no support function for the vehicle.
Subclass:
234
This subclass is indented under the class definition.
Apparatus having (1) wheels, skids or other special means to
facilitate moving the pump over the surface on which it
rests, (2) means which specifically adapts the pump to be
supported on some part of a human body or animal, or (3) a
handle by which the pump may be carried.
(1) Note. To fall within part (1) of this definition the
wheels, skids or the bike must be merely to make the pump
ambulant or portable and may not be a vehicle or the like
intended primarily for some other function with a pump
incidentally mounted thereon (e.g., bicycle and tire pump
thereon).
SEE OR SEARCH THIS CLASS, SUBCLASS:
231 for a vehicle mounted or attached pump in which the pump
is operated by some part of the vehicle (e.g., wheel or axle)
and in which the vehicle serves some function other than
mounting and driving the pump (e.g., automobile).
Subclass:
235
This subclass is indented under subclass 234. Apparatus in
which the pump is driven to perform its pumping function as a
result of being moved over the surface on which it is
supported on the wheels, skids or the like.
SEE OR SEARCH THIS CLASS, SUBCLASS:
231 for a vehicle mounted or attached pump in which the pump
is operated by some part of the vehicle (e.g., wheel or axle)
and in which the vehicle serves some function other than
mounting and driving the pump (e.g., automobile).
SEE OR SEARCH CLASS:
239, Fluid Sprinkling, Spraying, and Diffusing, 155 for
sprayers with mobile tank-type supply means in which the
sprayer operating means is interconnected with the ground
traverse means.
Subclass:
236
This subclass is indented under the class definition.
Apparatus which by adjustment or relative rearrangement of
its parts or by the addition or omission of a part is so
changed as to become basic subject matter of another class.
Subclass:
237
This subclass is indented under subclass 236. Apparatus in
which a device is operable under one condition as a pump and
as a result of the adjustment, rearrangement of parts or
addition or omission of a part is operable as a motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
364 for a pump mechanically driven by an internal combustion
engine including a pump mounted on an engine cylinder or head
and mechanically driven by the piston of the engine.
380 for a pump having a motor driven by the products of
combustion (or a component thereof) of an internal combustion
engine including a pump mounted on an engine cylinder and
operated by the pressure fluctuations in the cylinder.
SEE OR SEARCH CLASS:
60, Power Plants, subclass 408 and 629, for a convertible
motor and pump with means for storing the fluid energized by
the pump mechanism and utilizing such fluid as the motive
fluid for the converted motor.
123, Internal-Combustion Engines, 319 for internal
combustion engines whose cycles are modified to produce a
braking action by displacement of fluid and not being
disclosed as capable of delivering fluid for a useful
external purpose.
Subclass:
238
This subclass is indented under the class definition.
Apparatus which by relative rearrangement of its parts or by
the addition or omission of a part is so changed as to
operate in a different way or change its function or enhance
its operation in some way.
SEE OR SEARCH THIS CLASS, SUBCLASS:
82 for the combination of a rotary nonexpansible
chamber-type pump and a jet pump in which the location of the
jet pump is changeable by assembly or disassembly.
236 for pumps convertible to basic subject matter of another
class.
Subclass:
239
This subclass is indented under subclass 238. Apparatus in
which the rearrangement of parts or addition or omission of a
part is accomplished in order to permit or accommodate the
operation of the pump in a reverse direction of rotation or a
reverse direction of flow of pump fluid through the pump.
Subclass:
240
This subclass is indented under the class definition.
Apparatus in which the pumping is effected by a body of
liquid which is at least partially confined and forms a
liquid piston to act as a pumping member, either the liquid
piston or the means confining the liquid or both being set
into motion, the inertia of the liquid piston (i.e., the
tendency to remain in motion or at rest) or the momentum
thereof being effective to produce the pumping action.
(1) Note. For a patent to be classified under this
definition the pump must rely upon the inertia or momentum of
the liquid for its operation. In many pumps such as a
reciprocating piston, expansible chamber type the momentum of
liquid being expelled from a chamber might incidentally also
produce additional pumping action over that produced by the
expansible chamber effect. However, such pumps are not
included under this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
104 for a momentum liquid piston used as a pumping means to
pump a different fluid.
Subclass:
241
This subclass is indented under subclass 240. Apparatus in
which the liquid is set in motion by the absolute movement of
the means confining the liquid.
Subclass:
242
This subclass is indented under the class definition.
Apparatus comprising two or more pump chambers there being
provided means for separately controlling the inlet of fluid
to each chamber and each chamber being provided with a
relatively movable wall portion (e.g., piston) for changing
the chamber volume; there being additionally provided a flow
path for establishing intercommunication between said
chambers which is distinct from the normal pump fluid inlet
flow paths, said flow path being controlled as a result of
the wall portion reaching a predetermined position in one of
said pumping chambers.
(1) Note. For purposes of this definition, the plural
pumping chambers may be formed by a single cylinder having a
single piston therein providing oppositely facing pumping
faces for dividing the cylinder into plural chambers.
Subclass:
243
This subclass is indented under the class definition.
Apparatus in which the pumped fluid is first acted upon by
one pump or pumping member and subsequently acted upon by a
second pump or pumping member and provided with heat exchange
apparatus interposed between the pumps or pumping members to
dissipate heat from the pump fluid generated by the pumping
operation.
(1) Note. To be classified under this definition there must
be claimed some structure peculiarly adapted to cooling or
heat exchange such as fins, cooling fan, etc., or a specific
structural relationship of the intercooler to the pump. A
mere conduit between stages in which cooling might
incidentally occur would be excluded. The mere claiming of
an "intercooler" or "cooler" is not sufficient to cause
classification under this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
164 for successive stage pumps of the jet type with cooling
means between the jet stages.
SEE OR SEARCH CLASS:
165, Heat Exchange, for heat exchange, per se, and see
particularly 120 for heat exchangers with a pump or impeller
for moving the exchanger material.
Subclass:
244
This subclass is indented under the class definition.
Apparatus in which the pumped fluid is serially acted upon by
a plurality of pumping units.
(1) Note. This definition includes those expansible chamber
pumps in which the fluid is pumped by being successively
acted upon by opposed faces of a unitary pumping member
provided valving is present in all three of the following
locations; inlet valve means to the first chamber, valve
means to control the flow from one face to the other (e.g.,
valved piston) and outlet valve means from the second
chamber. It is not necessary that all of such valving be
claimed, but all must be disclosed. In the absence of the
disclosure of any of said valving in combination with the
unitary pumping member the patent is excluded from this
definition. See subclasses 437+. However, this definition
does include those pumps in which the fluid is successively
acted upon by different faces of a unitary pumping member if
the faces move in the same direction to effect the pumping
action. In this case the valving for the three locations
above noted is not required.
(2) Note. This definition excludes those pumps having a
unitary pumping member which includes a plurality of spaced
serially arranged self-acting valves which simultaneously
control the pumped fluid to or from a common expansible
chamber; this not being considered to be a plurality of
pumping units. See subclass 459.
(3) Note. Multi-stage rotary pumps of the expansible or
nonexpansible chamber type are generally classified in
Classes 415 and 418. However, said pumps are included in
this class in certain combinations such as when driven by a
significantly claimed motor. Such rotary pumps will be
included under this definition only if they include a
plurality of rotors or runners which have or are capable of
relative movement during operation.
(4) Note. Apparatus in which the pump fluid successively
flows from a pump chamber and then through a motor working
chamber to be expelled therefrom with exhausted motive fluid
is excluded under this definition as constituting successive
stages. See subclasses 377+.
(5) Note. Relatively movable pumping members which
successively act upon the pumped fluid are included under
this definition and do not require the disclosure of valves
in the three locations as set forth in (1) Note above.
Subclass:
245
This subclass is indented under subclass 244. Apparatus in
which one of the pumping units is driven by a fluid motor,
the motive fluid for operating the fluid motor being provided
from another of the pumping units in the series.
Subclass:
246
This subclass is indented under subclass 244. Apparatus in
which the serial pumping units are provided with pumping
members which are capable of or constrained to move relative
to each other, said pumping members being driven by two or
more working members which are capable of or constrained to
move relative to each other.
Subclass:
247
This subclass is indented under subclass 246. Apparatus in
which the pumping members and motor working members partake
of a continuous, unidirectional, rotary movement about an
axis.
Subclass:
248
This subclass is indented under subclass 244. Apparatus
including a plurality of individual pumping members or units
each of which handles a portion only of the total fluid
pumped (i.e., operate in parallel flow paths) and a further
single pumping unit or member which acts upon the total fluid
handled by said plurality of pumping members or units, the
single pumping unit or member acting upon the fluid either
prior or subsequent to its being acted upon by said plurality
of pumping members or units.
(1) Note. A plurality of pumping members acting in a single
expansible chamber are not considered to be parallel stages
under this definition. However, a double acting pumping
member is considered to be parallel stages under this
definition.
Subclass:
249
This subclass is indented under subclass 244. Apparatus in
which there is a chamber or reservoir intermediate said
stages which is continually open to atmosphere, the prior
stage delivering the pumped fluid to said chamber or
reservoir and the subsequent stage removing the pumped fluid
therefrom.
Subclass:
250
This subclass is indented under subclass 244. Apparatus in
which in addition to the pump fluid intake to the prior stage
and discharge from the subsequent stage there is provided (1)
means in the fluid flow path intermediate the stages whereby
fluid may be introduced to be acted upon by the subsequent
stage which was not acted upon by the prior stage or (2)
means to take additional pump fluid directly into the
subsequent stage which was not acted upon by the prior
stage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
242 for a controlled bypass between plural pump chambers
which is in addition to the normal inlet flow paths to the
chambers.
Subclass:
251
This subclass is indented under subclass 244. Apparatus in
which in addition to the pump fluid intake to the prior stage
and discharge from the subsequent stage there is provided (1)
means in the fluid flow path intermediate the stages whereby
pump fluid which was acted upon by the prior stage may be
discharged without being acted upon by the subsequent stage
or (2) means to permit discharge of pump fluid directly from
the prior stage without being acted upon by the subsequent
stage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
242 for a controlled bypass between plural pump chambers
which is in addition to the normal inlet flow paths to the
chambers.
Subclass:
252
This subclass is indented under subclass 251. Apparatus in
which the discharge is between the stages and operates to
discharge some or all of the fluid from the prior stage in
response to the pressure of the pumped fluid at some point in
the system.
(1) Note. The discharge is considered to be between the
stages if it is intermediate the discharge control means for
the prior stage and the intake control means for the
subsequent stage (e.g., check valves, etc.).
Subclass:
253
This subclass is indented under subclass 244. Apparatus in
which the pumped fluid is controlled prior to, during or
after being acted upon by the pumping units, the control
operating in response to the occurrence of a condition or a
change in condition.
(1) Note. The fluid may be controlled by controlling an
inlet or discharge valve (e.g., by holding an inlet or
discharge valve open), a bypass valve or a clearance space.
(2) Note. This definition includes direct acting relief
valves and the like, but excludes a mere cyclic distributor
valve (e.g., inlet or discharge check valve) of an expansible
chamber pump.
SEE OR SEARCH THIS CLASS, SUBCLASS:
252 for multistage pumps with an interstage pressure
responsive discharge for pumped fluid.
Subclass:
254
This subclass is indented under subclass 244. Apparatus in
which the successive pumping units each include a rigid
pumping member which partakes of a to-and- fro movement to
perform the pumping function.
(1) Note. The stages may be formed by the opposite faces of
a unitary pumping member.
(2) Note. This definition excludes pumping members of the
flexible wall type.
Subclass:
255
This subclass is indented under subclass 254. Apparatus in
which the successive reciprocating pumping members are driven
by a rotary shaft having crank means or the like thereon
connected to the pumping members, a housing (i.e., crankcase)
in which the shaft operates and (1) the housing together with
a pumping member constituting one of the pumping units or (2)
at least a portion of the fluid acted upon by a prior stage
passing into the housing before being acted upon by a
subsequent stage.
Subclass:
256
This subclass is indented under subclass 254. Apparatus in
which the pumping members are constrained to move in opposite
directions, the pumping members containing valves and the
pump fluid passing successively through the members.
Subclass:
257
This subclass is indented under subclass 256. Apparatus in
which the axes of the oppositely moving pumping members form
a common straight line.
Subclass:
258
This subclass is indented under subclass 254. Apparatus in
which one of the pumping members comprises a piston which
reciprocates in a fixed cylinder and another pumping member
comprises a cylinder which moves with respect to a fixed
piston encompassed thereby.
Subclass:
259
This subclass is indented under subclass 254. Apparatus in
which at least one of the pumping units comprises a valved
piston.
(1) Note. For the definition of valved piston see subclass
545 of this class.
SEE OR SEARCH THIS CLASS, SUBCLASS:
256 for pumps including oppositely movable valved pumping
members (usually pistons) which successively act on the pump
fluid.
Subclass:
260
This subclass is indented under subclass 259. Apparatus in
which the valved piston has (1) relatively movable valve
members which form, respectively, the inlet and outlet valves
for one of the pumping units or (2) has a movable valve
member which forms the inlet or outlet valve for one of the
pumping units and the piston itself acts as the outlet or
inlet valve, respectively, for said unit (e.g., piston
controlled port, etc.).
Subclass:
261
This subclass is indented under subclass 259. Apparatus in
which the piston is provided with a plurality or relatively
movable valves through which the pump fluid must flow
serially enroute from one stage of pumping to the next stage
of pumping.
Subclass:
262
This subclass is indented under subclass 259. Apparatus in
which the valve in the piston is the intake valve to the
first pumping unit of the series of pumping units which act
on the pump fluid.
Subclass:
263
This subclass is indented under subclass 259. Apparatus in
which in addition to the successive pumping units including
the valved piston another pumping member is provided which
pumps fluid in parallel with said units; i.e., the fluid
pumped by the pumping member does not pass through the
pumping units.
(1) Note. The additional pumping member maybe an element of
a second multistage pump unit.
Subclass:
264
This subclass is indented under subclass 259. Apparatus in
which the pumping units are driven by a motor of the type
which includes a movable working member which is motivated by
a fluid.
Subclass:
265
This subclass is indented under subclass 254. Apparatus in
which the successive pumping members are capable of or
constrained to move relative to one another incident to the
pumping operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
256 for oppositely moving valved pumping members which
successively act on the pump fluid.
Subclass:
266
This subclass is indented under subclass 254. Apparatus in
which the pumped fluid is successively acted upon by three or
more reciprocating pumping members.
Subclass:
267
This subclass is indented under subclass 254. Apparatus in
which the pumping members which successively act upon the
pump fluid are each of the type which act to pump separate
streams of fluid in both directions of reciprocation, i.e.,
each pumping member of the series is of the double acting
type.
Subclass:
268
This subclass is indented under subclass 254. Apparatus in
which the successive pumping members are unitary with one
another, and are operative in the same direction of motion
for the pumping (i.e., discharging) stroke.
Subclass:
269
This subclass is indented under the class definition.
Apparatus in which the pump comprises three or more
cylinders, each cylinder being provided with a relatively
reciprocating piston (include diaphragm) to thereby form a
plurality of pumping chambers, the cylinders or a
transmission element in common operative engagement with said
cylinders or pistons being adapted to rotate about a fixed
axis; said cylinders being physically arranged in a manner
such that their longitudinal axes either (1) intersect at a
common point or (2) extend parallel to said axis of
rotation.
(1) Note. Devices having three or more cylinders arranged
in the above defined relationship are intended to be included
hereunder only in those instances where the disclosed
structure limits the device to a pumping function (e.g.,
check valve control of admission or discharge of pump fluid
to or from the cylinders) or has structure claimed which has
utility only in a pumping operation. Therefore, plural
cylinder devices of this arrangement which are in fact
capable of operation as a motor and which have no features
claimed of sole pump utility are classified in Class 91,
Motors: Expansible Chamber Type, regardless of whether they
are disclosed and claimed generically or solely as pump or
motor. However, intended to be classified in this class are
plural cylinder devices of the above defined type which are
disclosed solely or claimed solely as a pump and which in
addition claim means separate from the pump for sensing a
condition (excludes direct response via pumping member) to
effect control of either (1) the pumped fluid (see subclass
270, indented hereunder) or (2) the pump drive transmission
(see subclasses 212+). Also, plural cylinder devices of this
type having a significantly claimed motor drive therefor are
intended to be classified in this class (see subclass 271,
indented hereunder) provided the claims do not reflect
control of the drive in response to a sensed pump condition
which would cause classification in subclasses 1+.
(2) Note. To fall within the scope of this definition the
motor must be of the type which includes at least three
cylinders and none of said three may be formed integral with
the relatively reciprocating piston of another.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, appropriate subclasses, for
mechanical motion converting apparatus having no pump fluid
valving or porting claimed and see especially subclass 22
for apparatus for converting rotary motion to reciprocating
and rotary motion and subclass 55 for apparatus employing a
cam and slide for converting rotary motion to or from
reciprocating or oscillating motion.
91, Motors: Expansible Chamber Type, 472, for three or more
cylinders arranged in parallel, radial, or conical
relationship with a rotary transmission axis and which are
generic to operation as either a pump or a motor. See note
above for the distinction between this subclass and
subclasses 472+ in Class 91.
92, Expansible Chamber Devices, appropriate subclasses, for
expansible chamber devices having plural parallel, radial, or
conical arranged cylinders in which there is no valving of
the pumped fluid claimed and see especially 12.1 for
displacement control of plural cylinders arranged in
parallel, radial, or conical relationship with a rotary
transmission axis, 56+ for plural rotating cylinders, 68+ for
relatively movable working members interconnected with a
common rotatable shaft, and 146+ for plural unitarily mounted
cylinders.
Subclass:
270
This subclass is indented under subclass 269. Apparatus
including fluid flow control means for varying the flow of
the fluid being pumped, said means being operated by sensing
the occurrence of a condition or change in condition.
(1) Note. For a further definition of what constitutes the
occurrence of a condition or a change in condition see the
definition and notes of subclass 279 of this class.
(2) Note. This definition does not include a distributor
for the pump formed by relatively rotating parts (e.g., disc
valve) in which the relatively rotating parts are biased into
sealing engagement by springs or the like which could yield
to allow separation of the valve ports and permit escape or
by-pass of pump fluid.
Subclass:
271
This subclass is indented under subclass 269. Apparatus in
which the pump is driven by a motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
321 for pumps other than the above defined type which are
motor driven.
Subclass:
272
This subclass is indented under subclass 269. Apparatus in
which there is provided fluid pressure responsive means
located externally of the pumping chambers and associated
with at least one of said plural cylinders or relatively
reciprocating piston for exerting thereon a continuous force
in one reciprocatory stroke direction to promote expansion or
contraction of the pumping chamber associated with said one
cylinder or piston.
Subclass:
273
This subclass is indented under subclass 269. Apparatus in
which the longitudinal axes of said plural cylinders
intersect at a common point from which they radiate and are
contained within a common plane perpendicular to said axis of
rotation.
(1) Note. In some instances, the longitudinal axes of the
cylinders move relative to the axis of rotation and devices
of this type are intended to be included hereunder if the
individual cylinder axes pass through the common point in at
least one position of their movement.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, appropriate subclasses for
mechanical motion converting apparatus having no pump fluid
valving or parting claimed and see especially subclass 55
for apparatus employing a cam and slide for converting rotary
motion to or from reciprocating or oscillating motion.
91, Motors: Expansible Chamber Type, 491, for three or more
cylinders arranged in radial relationship with a rotary
transmission axis which are generic to operation as either a
pump or motor.
92, Expansible Chamber Devices, appropriate subclasses, for
expansible chamber devices having plural radial cylinders in
which there is no valving of pump fluid claimed and see
especially subclass 58 for plural rotating cylinders in
which the axis of the cylinders intersect the rotation axis
at a common point, subclasses 72+ for relatively movable
working members interconnected with a common rotatable shaft
and in which the shaft axis is intersected by the axis of the
working members and subclass 148 for three or more unitarily
mounted, radially arranged cylinders.
Subclass:
274
This subclass is indented under the class definition.
Apparatus comprising condition responsive means to vary the
clearance volume of the expansible chamber of an expansible
chamber pump by sensing the occurrence of a condition or
change in condition.
(1) Note. Those expansible chamber devices which have a
movable wall which is movable solely by the pressure of the
fluid in the chamber acting directly on the wall or a
separate fluid reaction surface connected to the movable wall
are excluded from this subclass, see Class 92, subclass 60.
The terms "acting directly" as used above mean that the fluid
acts on the separate fluid section surface without being
valved. When there is disclosure of a valve between the
chamber and the fluid reaction surface the patent is
classifiable in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
212 for variable displacement expansible chamber pumps
provided with condition responsive drive control means.
SEE OR SEARCH CLASS:
92, Expansible Chamber Devices, subclass 60 for a flexible
or resiliently biased nonworking member movable wall which is
in constant communication with the working chamber of a
nonrotary expansible chamber device.
418, Rotary Expansible Chamber Devices, 16 for a variable
volume working chamber rotary expansible chamber device and
subclasses 24+, in particular, for such devices having a
spring or fluid biased movable member.
Subclass:
275
This subclass is indented under subclass 274. Apparatus in
which the means to vary the clearance volume comprises a
separate chamber for varying the capacity of the expansible
chamber, and a valve means for isolating said separate
chamber from the expansible chamber.
(1) Note. For the definition of an expansible chamber-type
pump, see definition of subclass 437 below.
Subclass:
276
This subclass is indented under subclass 275. Apparatus in
which the pump is of the double acting type having two
pumping chambers, each of said pumping chambers being
connected to a separate clearance chamber, and at least two
of the separate clearance chambers being interconnected by
valve means.
Subclass:
277
This subclass is indented under subclass 275. Apparatus
wherein a single expansible chamber has two or more clearance
chambers connected thereto.
Subclass:
278
This subclass is indented under the class definition.
Apparatus comprising fluid flow control means for varying the
flow of pumped fluid, and including means operated in
response to a condition or change in condition occurring
externally of the system other than a manually induced
condition or change.
(1) Note. Additional structure or modification of the pump
structure to respond to or compensate for the external
condition must be included and hence mere exposure of the
pump or pump part to an external condition is excluded from
this definition.
(2) Note. Fluid flow control varying means under this
definition is intended to include means for varying the
volume or pressure of pumped fluid delivered by the pump.
Subclass:
279
This subclass is indented under the class definition.
Apparatus comprising fluid flow control means for varying the
flow of pumped fluid, and including means sensing the
occurrence of a condition or change in condition of either
the pump or the fluid being pumped to actuate the control
means.
(1) Note. The terms "bypass" and "relief" as used in
subclasses indented hereunder are defined as follows: bypass,
a flow line which connects the pump discharge passage
directly to the pump intake passage, and relief, a flow line
which connects the pump discharge directly to exhaust (e.g.,
a sump, atmosphere or the like).
(2) Note. Valves which may ordinarily be considered to be
fluid flow or condition responsive (e.g., check valves, etc.)
are excluded from this and the indented subclasses if they
normally are operated through a cycle every time the pump or
pumping member with which they are associated is operated
through its normal pumping cycle. However, (1) spring biased
valves which are solely disclosed as being bypass or relief
valves even though they may operate cyclically and (2)
normally cyclically operable valves which have their cycle or
operation altered or modified by a change of condition have
been included in this and indented subclass. See subclasses
297+ for the latter type. See subclasses 502 and 503 for
multiple cyclic outlet and inlet paths, respectively, and
subclass 504 for plural outlet paths to a single discharge
line acting under different conditions.
(3) Note. The control of an atmospheric air inlet to the
pulsation dampening chamber of a pump is not included in this
subclass. See subclasses 540+ and the notes thereto for the
classification of such devices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
270 for pumps having three or more radial, parallel, or
coaxially arranged cylinders having condition responsive
control of the pump fluid.
SEE OR SEARCH CLASS:
137, Fluid Handling, 115.01 for a self-proportioning system
having a by-pass or relief controlled by a main line
condition.
Subclass:
280
This subclass is indented under subclass 279. Apparatus in
which the pump is provided with a driving motor and the
sensing means responds to a condition of the motor or the
operating medium of the motor which is generated by a
condition or change of condition of the pump.
(1) Note. The condition sensed must be more than the manual
operation for starting or stopping the drive means. See
subclasses 316+ for correlated pump fluid and motor or clutch
control.
SEE OR SEARCH THIS CLASS, SUBCLASS:
293 for pumped fluid control responsive to the speed of a
driven pump part.
Subclass:
281
This subclass is indented under subclass 279. Apparatus
comprising a pumping unit having means for lubricating a part
of the unit which is so related to the flow control means
that such means is controlled in response to a condition or
change in condition of the means lubricating the pumping
unit.
Subclass:
282
This subclass is indented under subclass 279. Apparatus in
which the fluid flow control means comprises a single flow
controlling element for a single fluid passage controlled by
a plurality of separate sensing elements or signals, each
responsive to a different condition or change in such
condition.
(1) Note. A bypass valve provided with means responsive to
discharge pressure will not be classified in this subclass
merely because the valve or controller is exposed to the
fluid entering the pump. Such a bypass valve is classified
below on other features.
SEE OR SEARCH THIS CLASS, SUBCLASS:
300 for a flow generated pressure differential which is
sensed and the high and low pressures determining such
differential applied to opposite faces of an actuator
controlling the fluid flow control means.
Subclass:
283
This subclass is indented under subclass 279. Apparatus
comprising a pump which includes a movable part or portion
other than the pumping member but which is normally in
contact with the pumping member, the part or portion normally
being biased against the pumping member by pumped fluid
pressure acting thereon, and in which there is a bypass or
relief valve for pumped fluid, the operation of the bypass or
relief valve relieving the pressure bias on the part or
portion such that it moves out of contact with the pumping
member to permit fluid to pass around the pumping member from
the pump discharge to the inlet.
Subclass:
284
This subclass is indented under subclass 279. Apparatus in
which a movable pumping member is provided with a bypass or
relief passage and the fluid flow control means controlling
such passages is carried by the pumping member.
Subclass:
285
This subclass is indented under subclass 279. Apparatus
comprising a pump of the nonrotary expansible chamber type
having plural pumping chambers, one of which is caused to
expand simultaneously with the contraction of another, and
the fluid flow control means comprises valve means which
controls the flow of fluid directly from the contracting
chamber to the expanding chamber.
(1) Note. The passage connecting the chambers may do so by
branching from another flow line, but if it does so, the
branching must be between the chamber and any pump
distributor valve located in the other flow line.
Subclass:
286
This subclass is indented under subclass 279. Apparatus in
which a plurality of pumping units are provided and wherein
the fluid flow control means operated in response to a
condition or change in condition individually controls the
operating characteristics of one unit relative to another and
comprises (1) means other than the valving required for the
pumping function of such unit or (2) means to operate the
necessary valving of a pumping unit in a manner inconsistent
with the pumping function of such unit.
(1) Note. To be considered plural pumping units under this
definition each unit must operate in or comprise a pumping
chamber separate and distinct from the pumping chamber of
another unit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
253 for multistage pumps having condition responsive control
of at least one of the stages.
270 for three or more cylinders arranged in parallel, radial
or conical relationship with rotary transmission axis having
condition responsive pumped fluid control.
SEE OR SEARCH CLASS:
137, Fluid Handling, 111 for self-proportioning systems
having plural inflows including a flow line from plural
pumps.
Subclass:
287
This subclass is indented under subclass 286. Apparatus in
which the pumping units have different volumetric
displacements to provide different rates of flow or different
pressure heads.
SEE OR SEARCH THIS CLASS, SUBCLASS:
253 for diverse capacity pumps of the multistage type having
condition responsive control of at least one of the stages.
Subclass:
288
This subclass is indented under subclass 286. Apparatus in
which the plurality of pumping units are each provided with a
relief or bypass passage and the fluid flow control means
comprises valve means which, in response to a condition,
operates to serially open or close the passages.
Subclass:
289
This subclass is indented under subclass 279. Apparatus in
which the pump includes an expansible chamber-type pump
having a supply or discharge port controlled by the position
of the pumping member and the position at which the pumping
member covers or uncovers the port is varied in response to
the sensed condition.
(1) Note. For the purpose of this definition a pumping
member controlled port includes the types set forth below in
subclass 490.
Subclass:
290
This subclass is indented under subclass 279. Apparatus
including means to cause or permit the fluid flow control
means to operate or not to operate for a period of time after
a change of condition has been sensed and then act to start,
stop or change the mode of operation of the means.
(1) Note. Excluded from this definition is a dashpot or
damper whose control fluid is independent of the pumped fluid
and which dashpot or damper is in combination with valve
means which controls the pumped fluid flow. Such combination
is classified below on other features.
SEE OR SEARCH THIS CLASS, SUBCLASS:
27 for condition responsive control of both the pump fluid
and the pump drive motor with means for delaying operation of
the pump fluid controlling valve.
Subclass:
291
This subclass is indented under subclass 279. Apparatus in
which the pump is of the type in which the flow of fluid
through the pump is caused to change direction and flow in
the opposite direction when the direction of rotation of the
pump element or the drive means is reversed and in which the
fluid flow control means controls a bypass line or lines, the
means being operable to direct fluid from the discharge to
the inlet of the pump irrespective of the direction of the
fluid flow through the pump.
Subclass:
292
This subclass is indented under subclass 279. Apparatus
where the condition or change in condition is the temperature
of the pump or pumped fluid.
Subclass:
293
This subclass is indented under subclass 279. Apparatus in
which there is provided a sensing means responding to the
speed of a driven portion of the pump means or the drive
means for such means and which is related to the fluid flow
control means to operate the latter when the pump portion or
drive means attains a predetermined speed or changes speed.
Subclass:
294
This subclass is indented under subclass 293. Apparatus
wherein the sensing means comprises centrifugally actuated
means effecting operation of the fluid control means either
(1) directly or (2) through a fluid control circuit.
Subclass:
295
This subclass is indented under subclass 279. Apparatus in
which the fluid control means comprises valve means other
than a distributor which valve means varies the flow of fluid
entering the pumping means by restricting the size of, or
closing the inlet passage of the pumping means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
298 for an inlet distributor having means to modify its
operation.
Subclass:
296
This subclass is indented under subclass 279. Apparatus in
which the fluid flow control means comprises a bypass or
relief valve which has at least one part thereof carried by a
distributor of the pump which carries at least one part of a
distributor of the pump.
(1) Note. For the definition of the term "distributor," see
the notes under subclass 437.
Subclass:
297
This subclass is indented under subclass 279. Apparatus in
which the fluid flow control means includes a cyclically
operable pump valve and means for modifying the normal
operation of said valve.
Subclass:
297.5
This subclass is indented under subclass 297. Apparatus in
which the means for modifying the normal operation of said
valve acts in response to the level of pump fluid.
Subclass:
298
This subclass is indented under subclass 297. Apparatus in
which the cyclically operable pump valve is the inlet or
intake valve of the pump.
Subclass:
299
This subclass is indented under subclass 279. Apparatus in
which there is a bypass or relief line controlled by the
fluid flow control means, the bypass or relief line being
normally open to permit flow therethrough and the control
means operating to close the line when the flow rate through
the pump or the pressure generated by the pump increases
above a minimum value.
Subclass:
300
This subclass is indented under subclass 279. Apparatus in
which the fluid flow control means is operated in response to
the volume of fluid flowing through the pump or changes in
the volume of fluid flowing through the pump.
Subclass:
301
This subclass is indented under subclass 279. Apparatus in
which the fluid flow control means comprises a valve in a
bypass passage around the pump, which valve is responsive to
an increase in the inlet passage to permit fluid to flow from
the inlet to the discharge side of the pump.
Subclass:
302
This subclass is indented under subclass 279. Apparatus in
which the flow control means control flow in two or more
pumped fluid flow paths.
Subclass:
303
This subclass is indented under subclass 302. Apparatus
wherein one of the condition responsive fluid flow paths
comprises a normally closed main line path in the pump inlet
or outlet, and another comprises a normally closed path in a
relief or bypass passage, said paths provided with valve
means operated by the condition responsive means to open the
main line path before the opening of the other.
Subclass:
304
This subclass is indented under subclass 302. Apparatus in
which the condition responsive fluid control means comprises
means located in a plurality of separate bypass or relief
passages.
SEE OR SEARCH THIS CLASS, SUBCLASS:
287 for plural diverse capacity pumps or chambers having
sequentially controlled passages controlled by a single valve
element.
288 for plural pumps or chambers having sequentially
operated bypass or relief passages.
308 for plural relief or bypass valves having at least one
responsive to pressure.
Subclass:
305
This subclass is indented under subclass 279. Apparatus in
which the fluid flow control means is provided with a
separate means under the control of a human operator for
operating the flow control means independently of the
condition sensed.
(1) Note. The manual actuating means must be specifically
disclosed as operating the fluid flow control means by an
independent or overriding action of the condition sensing
means. The disclosure of a manual adjusting means, which
might incidentally cause operation of the flow control, is
not included.
Subclass:
306
This subclass is indented under subclass 279. Apparatus in
which the flow control means controls a passage communicating
with the atmosphere and the inlet of a pump or pumping
chamber of a pump and is operative in response to a condition
of such pump to admit atmospheric air to the pump inlet or
pumping chamber to reduce or destroy the normal vacuum which
exists in the inlet or in the pumping chamber during the
intake stroke of the pump.
SEE OR SEARCH THIS CLASS, SUBCLASS:
307 for a pressure responsive bypass or relief valve which
permits the discharge of pumped fluid to the inlet of the
pump or to ambient in response to a pressure rise in the
pumping chamber.
Subclass:
307
This subclass is indented under subclass 279. Apparatus in
which the fluid flow control means controls a bypass or
relief line.
Subclass:
308
This subclass is indented under subclass 307. Apparatus in
which there is an additional relief or bypass path having an
independent control means to control the flow of fluid in the
path.
Subclass:
309
This subclass is indented under subclass 307. Apparatus in
which the fluid flow control means is operated in response to
a condition of the fluid in the intake or low pressure inlet
of the pump.
SEE OR SEARCH THIS CLASS, SUBCLASS:
301 for an inlet pressure responsive bypass from the pump
inlet to the pump discharge.
Subclass:
310
This subclass is indented under subclass 307. Apparatus
wherein the pump is of the rotary expansible chamber type.
Subclass:
311
This subclass is indented under subclass 307. Apparatus in
which the fluid control means comprises a valve which is
biased to a closed position by means of a spring and means
are provided for varying the bias of the spring.
Subclass:
312
This subclass is indented under the class definition.
Apparatus including means to attenuate sound created by
operation of the pump, said means acting upon the pump fluid
to accomplish the attenuation.
SEE OR SEARCH CLASS:
181, Acoustics, subclass 403 for refrigerator compressor
mufflers.
Subclass:
313
This subclass is indented under the class definition.
Apparatus claimed in combination with features other than the
fluid impelling means or valving, the drive means or casing
or support structure for the pump and not provided for in
preceding subclasses.
(1) Note. In view of the intimate relationship between
Class 92, Expansible Chamber Devices, and this class with
respect to nonrotary expansible chamber-type pumps some
subjects matter which ordinarily would be considered to be
combined when claimed in combination with nonrotary
expansible chamber pumps of this class (417) are not
considered to be combined herein and are excluded under this
definition. The following basis has been used to determine
whether certain subject matter is to be considered as
combined under this definition. If Class 92 specifically
provides a basis of classification for the subject matter of
Class 92, then said subject matter combined with a nonrotary
expansible chamber pump will be excluded from this
definition. The miscellaneous combined subclass of Class 92
(subclass 145) is not considered to specifically provide a
basis of classification for any combined device. For
example, a nonrotary expansible chamber pump combined with
fluid purifying means as provided for in Class 92 subclasses
78+ or with nonsealing cleaning means as provided for in
Class 92 subclass 87 are excluded from this definition.
(2) Note. Note the following subclasses providing for
subject matter not considered to be combined under this
definition; 496+, 432+, 434, 435, 438, and 493+.
SEE OR SEARCH THIS CLASS, SUBCLASS:
372 for motor driven pumps having common or interrelated
cooling means for the pump and motor.
Subclass:
314
This subclass is indented under the class definition.
Apparatus comprising a reciprocating pumping member (e.g.,
piston) having opposed working faces disposed in a pair of
pumping chambers, both of said chambers being effective to
pump fluid under one condition of operation and means to
alter the operation thereof so as to cause only one of the
pumping chambers to be active during continued reciprocation
of the pumping member.
Subclass:
315
This subclass is indented under the class definition.
Apparatus in which the pump has a mechanical pumping member
(e.g., rotor or piston) and an inlet flow line and means
being provided to (1) change the flow of the pumped fluid
without altering the movement of or direction of rotation of
the pumping member, i.e., the inlet flow line under one
condition of operation becomes the outlet flow line under the
other condition of operation and vice versa or (2) change the
direction of rotation of the pumping member or a driving
element therefor without reversing the direction of flow of
the pump fluid in the flow lines.
SEE OR SEARCH THIS CLASS, SUBCLASS:
239 for similar devices in which the reverse flow with
unidirectional drive or the unidirectional flow with reverse
drive is effected by a rearrangement of parts or the addition
or omission of a part.
291 for a reversibly driven pump with a pressure responsive
bypass operable in either flow direction.
Subclass:
316
This subclass is indented under the class definition.
Apparatus in which the pump is driven by a motor or a
selectively disengageable drive means (i.e., clutch), the
motor or clutch having means (e.g., valve, switch, brake,
starter-circuit, lever, etc.) for controlling its operation
and the pump having control means associated therewith (i.e.,
pump fluid valve or displacement varying means), there being
provided positive actuation means for both the motor or
clutch control means and the pump control means, said motor
or clutch control means and said pump control means being
interrelated in a manner which causes or requires positive
actuation of the pump control means upon actuation of the
motor or clutch control means to at least one of its
operative controlling positions, or vice versa.
Subclass:
317
This subclass is indented under subclass 316. Apparatus in
which the valve means associated with the pump comprises a
pump fluid distributor for cyclically controlling the flow of
pump fluid to or from the pump.
(1) Note. See (1) Note of subclass 437 for definition of
distributor.
Subclass:
318
This subclass is indented under subclass 317. Apparatus
comprising a motor of the type which is motivated by fluid
(includes internal combustion engine type) and has valve
means movable relative to the motor working member for
cyclically controlling inlet or exhaust of motive fluid to
and from the motor (i.e., motive fluid distributor); said
motor valve means and said pump fluid distributor being
interconnected by a mechanical element (includes abutment or
lost motion-type interconnection) such that movement of the
motor valve means causes movement of the pump fluid
distributor, or vice versa.
Subclass:
319
This subclass is indented under the class definition.
Apparatus in which the pump has a driven pumping member, the
driving means including (1) a friction or interlocking means
to secure drive continuity between two rotating members of
the driving means, but being releasable to interrupt the
drive, or (2) a member or part so designed as to break or
rupture on overload so as to discontinue the drive.
Subclass:
320
This subclass is indented under the class definition.
Apparatus in which one or more pumping members act to form a
progression of completely isolated variable volume pumping
chambers by a unidirectional movement.
(1) Note. Pumps comprising a series of pumping members or a
single pumping member travelling unidirectionally through a
fluid confining chamber are found here.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, subclass 151, for
motors having serially formed expanding working chambers.
418, Rotary Expansible Chamber Devices, subclass 4, for a
plurality of chamber partitions moving along a curved path,
the distance between said partition members varying during
their course of travel.
Subclass:
321
This subclass is indented under the class definition.
Apparatus in which the pump is driven by a significantly
claimed motor.
(1) Note. This definition excludes motor driven pumps in
which the pump is a mere accessory of or ancillary to the
operation of the motor and such ancillary function is
reflected in the claims. For example, an engine driving a
cooling water pump with no claimed connection of the pump to
the engine would be included under this definition, but if a
claim recites the connection of the cooling water pump to the
engine this would be excluded. Such a combination would be
classifiable in the appropriate motor class.
(2) Note. In order for a patent to be classified under this
definition there must be a significant recitation of both the
motor and the pump. A specifically claimed pump driven by a
nominally claimed motor is classified in appropriate other
subclasses of this class or other appropriate classes which
include pumps (e.g., Class 415, Rotary Kinetic Fluid Motors
or Pumps; Class 418, Rotary Expansible Chamber Devices,
etc.). Likewise, a specifically claimed motor driving a
nominally claimed pump is classified in the appropriate class
providing for such motor (e.g., Class 91, Class 415, Class
418, etc.). Enumerated below are a number of examples for
both pump and motor as to what is considered significant
recitation and that which is not significant recitation.
A. Motor Recitation
(1) Significant motor inclusion: (a) A motor having any
structural detail thereof recited, e.g., piston, rotor,
runner, armature, etc., or designation of a turbine as to
type, e.g., axial flow, two-stage, etc.; (b) Recital of
details of motor crankcase structure, housing, base, or
support for the motor. (c) Recital of structure ancillary to
the motor, e.g., fluid or electrical control circuit or power
generating apparatus, cooling or lubricating structure, etc.
(2) Insignificant motor inclusion: (a) Means for driving or
drive means. (b) A motor specified as to some extremely
common type, e.g., rotary, reciprocating, electric, fluid,
expansible chamber, turbine, internal combustion engine,
etc., or any combination of said types.
B. Pump Recitation
(1) Significant pump inclusion: (a) A pump having any
structural detail thereof recited, e.g., piston, gear, screw,
rotor or impeller within a recited casing, etc., or
designation of rotary nonexpansible chamber as to type, e.g.,
axial flow, centrifugal, two-stage, etc.; (b) Recital of
structure ancillary to the pump, e.g., cooling or lubricating
structure for the pump. (c) Recital of details of pump
crankcase, structure, housing, base or support for the pump.
(2) Insignificant pump inclusion: (a) A pump specified by
name or extremely common type, e.g., pump or pump means,
blower, fan, compressor, rotary, reciprocating, expansible
chamber, liquid, etc., or any combination of said types.
C. Pump and Motor Support or Spatial Relationship: (1) The
following motor-pump relationships are considered significant
for purposes of classification herein, even though neither
pump nor motor is specifically recited. (a) The claiming of a
spatial relationship between the pump and motor or common
support therefor, e.g., motor mounted on the pump, pump
mounted on the motor, a common base, support, or housing for
the pump and motor. (b) The claiming of means for permitting
or preventing heat transfer between the pump and motor or
pump and motive fluids. (c) The claiming of means common to
the pump and motor for cooling or lubricating same.
SEE OR SEARCH THIS CLASS, SUBCLASS:
1 for motor driven pumps with condition responsive control
of the pump drive motor.
91 for diverse pumps in which one is fluid motor driven and
the other is of the aerated column type, the motor exhaust
comprising the aeration fluid.
245 for successive stage pumps in which one stage has a
motor driven by fluid supplied from another stage.
271 for motor driven pumps in which the pump has three or
more cylinders arranged in parallel, radial or conical
relationships with a rotary transmission axis.
SEE OR SEARCH CLASS:
60, Power Plants, 533 for a motor driven expansible chamber
device disclosed solely as the master in a pulsator system,
92, Expansible Chamber Devices, for non-rotary expansible
chamber devices disclosed as being of the pump or motor type.
Class 417 will take a motor-type expansible chamber device
driving a pump-type expansible chamber device if a claim
recites one as a motor and one as a pump. Class 92 takes
plural expansible chamber devices including those in which
one is of the motor type driving another of the pump type if
no claim recites that one is a motor and the other a pump.
Subclass:
322
This subclass is indented under subclass 321. Apparatus in
which the pump has an expansible chamber, at least some of
the walls of which are of such a nature as to change
dimension when subjected to a magnetic or electric force to
change the volume of the chamber and means to subject the
walls to such a force.
SEE OR SEARCH THIS CLASS, SUBCLASS:
413.2 for piezoelectric member attached to diaphragm.
Subclass:
323
This subclass is indented under subclass 321. Apparatus in
which the pump has an inlet and outlet for fluid pumped for
external use, at least a portion of the fluid either (1)
prior to entry to the pump or (2) discharge from said pump
outlet, being utilized either immediately or stored for later
use, and without further addition of energy, under at least
one phase or condition of operation, as a source of motive
fluid for a fluid motor which is used to either drive the
pump or provide motive power for starting a motor (usually
combustion engine) which drives the pump.
(1) Note. In part (2) of the above definition, the pumped
fluid must have been discharged from the pump prior to its
being used as motive fluid. Therefore, reciprocating
expansible chamber pumps which utilized the pressure energy
of the fluid existing within the pumping chamber or a chamber
in nonvalved continuous communication therewith for reacting
on the pumping member itself or a member connected thereto
are excluded under this definition even though such an
arrangement may be said to assist in driving the pump. Also
those devices which permit the pump fluid to continuously
apply a force to a reciprocatory-type pumping member are
excluded under this definition.
(2) Note. The fluid motor of this definition, due to its
particular relationship of receiving motive fluid from the
pump which it is driving, will be a mere auxiliary of some
other source of pump motivating power (e.g., primary motor,
primary motive fluid source, or manual actuator) which may or
may not be claimed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
225 for intensifiers of the type which utilize a portion of
the pump fluid upstream of the pump for driving the pump
motor to raise the remainder of said pump fluid to a higher
head.
Subclass:
324
This subclass is indented under subclass 321. Apparatus in
which the pump is driven by a prime mover, there being
provided either (1) adjusting or converting means for
conditioning the pump for operation as a motor or (2) a
source of motive fluid selectively communicable with the pump
for causing the pump to be operated as a motor; operation of
the pump as a motor serving to start or aid in starting the
prime mover drive.
Subclass:
325
This subclass is indented under subclass 321. Apparatus in
which the motor is of the type which unidirectionally rotates
to cause the pump to operate and upon starting the motor
operates for a limited time in a direction of rotation
opposite to the normal pump driving direction of rotation
(usually to unload the pump) and having means which then
reverses the direction of rotation so as to operate the pump
in the normal manner.
Subclass:
326
This subclass is indented under subclass 321. Apparatus in
which there is provided motor control means which is operable
at the will of a human operator, said control means being
effective upon operation thereof to either (1) change the
rate of movement of a motor working member or (2) change the
direction of working member rotation in a motor of the type
having a rotating working member.
(1) Note. The motor control means of this definition may be
a reversible flow motive fluid generating pump, flow reversal
of said motive fluid generating pump causing reversal or
rotation of a rotary motor.
Subclass:
327
This subclass is indented under subclass 321. Apparatus in
which the motor has a movable working member which receives
its motive power as a consequence of the reactive force
created by the discharge of motive fluid therefrom to the
surrounding medium.
Subclass:
328
This subclass is indented under subclass 321. Apparatus in
which the motor is of the type which includes a movable
member which is motivated by either (1) the force of gravity
or (2) a spring.
(1) Note. To fall within the scope of this definition the
motivating force produced by the spring or gravitational
force must be controllable or variable in intensity or
direction to cause operation of the movable member, i.e., a
weight or spring for exerting a continuous unidirectional
biasing force is excluded.
Subclass:
329
This subclass is indented under subclass 328. Apparatus in
which a fluid material is utilized for causing motion of the
movable member, the principle force applied to movable member
being derived from gravitational force exerted thereon by the
fluent material (i.e., weight).
(1) Note. Exemplary of apparatus classified under this
definition are devices comprising either a movable container
or piston within an open ended cylinder which is alternately
filled and emptied with liquid, the weight of the liquid
causing movement of the container on the piston within the
cylinder.
Subclass:
330
This subclass is indented under subclass 321. Apparatus in
which the motor has at least one movable working member
positioned and adapted to receive energy from the
alternating, cyclic, surface movement of a fluid body which
movement is the result of either tidal or wave action.
SEE OR SEARCH CLASS:
60, Power Plants, 495 for motors having buoyant working
members motivated by the vertical rise and fall of a surface
of a body of fluid.
Subclass:
331
This subclass is indented under subclass 330. Apparatus in
which the motor working member is buoyant so as to float in
the water which is actuating it.
Subclass:
332
This subclass is indented under subclass 331. Apparatus in
which the buoyant motor working member moves about a pivot
point or fixed axis.
Subclass:
333
This subclass is indented under subclass 331. Apparatus in
which the movement of the buoyant motor working member is
restricted to a fixed path by a guiding and confining means,
such as a slide or a track.
Subclass:
334
This subclass is indented under subclass 321. Apparatus in
which the motor has a movable working member adapted to
receive energy from an unconfined body of fluid, such as the
wind or a river current.
(1) Note. Apparatus under this definition is limited to
those devices in which motive fluid for the working member is
completely nonconfined. Apparatus having stationary means
for directing the flow of motive to the motor working member
(e.g., trough, baffles, etc.) is thereby excluded under this
definition.
Subclass:
335
This subclass is indented under subclass 334. Apparatus in
which, in addition to the fluid current motor, there is
provided additional means to impart driving energy to the
pump.
(1) Note. The additional means is usually one for manually
operating the pump (e.g., handle).
(2) Note. Patents have been classified in this subclass on
a disclosure basis with many of the patents not claiming the
fluid current motor or pump, but merely the mechanism for
alternative drive.
Subclass:
336
This subclass is indented under subclass 334. Apparatus in
which the motor working member moves unidirectionally about a
fixed axis, said axis being substantially horizontal and
oriented in a direction parallel to the flow of the moving
fluid.
Subclass:
337
This subclass is indented under subclass 321. Apparatus in
which the motor has a buoyant movable working member which
member is positioned in a container for liquid, said
container being alternately filled and emptied so as to move
the buoyant member up and down or said buoyant member being
alternately filled and emptied so as to move up and down.
SEE OR SEARCH THIS CLASS, SUBCLASS:
331 for tide or wave actuated float which drives the pump.
Subclass:
338
This subclass is indented under subclass 321. Apparatus in
which two or more pumping members which are capable of or
constrained to move relative to each other are driven by two
or more motor working members which are capable of or
constrained to move relative to each other.
(1) Note. The plural pumping members under this definition
must each provide an output of fluid for external use.
Therefore, a motor driven pump which is a mere auxiliary or
ancillary of another motor driven pump (e.g., supplies motive
fluid or cooling fluid for another motor driven pump) is not
included under this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
246 for plural relatively movable pumping members driven by
plural relatively movable working members wherein the pumping
members serially act upon the pumped fluid.
Subclass:
339
This subclass is indented under subclass 338. Apparatus in
which the motor working members are motivated by fluid
(includes internal combustion engines) and in which said
pumping and motor working members partake of alternate
to-and-fro motion.
(1) Note. The plural pumping members under this definition
must each provide an output of fluid for external use.
Therefore, a motor driven pump which is a mere auxiliary or
ancillary of another motor driven pump (e.g., supplies motive
fluid or cooling fluid for another motor driven pump) is not
included under this definition.
(2) Note. Pumping members or working members of the
flexible wall type or which partake of an oscillatory motion
are included under this definition.
(3) Note. Plural relatively movable common piston or common
flexible wall type pump-motors fall within the scope of this
definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
246 for plural relatively movable pumping members driven by
plural relatively movable working members wherein the pumping
members serially act upon the pumped fluid.
Subclass:
340
This subclass is indented under subclass 339. Apparatus in
which the relatively movable working members form opposite
walls of a common expansible working chamber adapted to
receive pressure or combustion working fluid, said working
members moving toward and away from each other during
expansion and contraction of the expansible working chamber.
Subclass:
341
This subclass is indented under subclass 340. Apparatus in
which there is provided mechanical motion constraining means
(e.g., linkage, gearing, etc.) for interconnecting the
working members of said common expansible chamber in a manner
which necessitates motion of one working member relative to
another.
Subclass:
342
This subclass is indented under subclass 339. Apparatus in
which the working members are interconnected by a body of
fluid which is totally confined during at least a portion of
working member movement, the confining means for said body of
fluid being formed in part by said working members or
portions connected thereto so that movement of one working
member necessitates movement of the other.
(1) Note. The fluid interconnection under this definition
must be between faces or portions of the working members
other than their fluid working faces or portions.
(2) Note. Plural working members which are interconnected
solely by a confined body of fluid are intended to fall
within the scope of this definition, even though the
disclosed normal mode of operation may not provide for
relative working member motion.
Subclass:
343
This subclass is indented under subclass 339. Apparatus in
which there is provided mechanical motion constraining means
(e.g., linkage, gearing, etc.) for interconnecting the
pumping or working members in a manner which necessitates
motion of one working member relative to another or one
pumping member relative to another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
341 for mechanically interconnected, relatively movable
working members which form opposite walls of a common
expansible chamber.
Subclass:
344
This subclass is indented under subclass 339. Apparatus in
which there is provided valve means for controlling motive
fluid for one of said working members, said valve means being
controlled in response to another working member attaining a
predetermined position.
(1) Note. The valve means under this definition which
controls motive fluid for one working member may comprise a
cylinder port controlled by the working member of another.
Subclass:
345
This subclass is indented under subclass 344. Apparatus in
which the control valve means comprises either (1) a multiway
valve or (2) plural valve means and a single element for
actuating each of the valve means said control valve means
controlling motive fluid for the plural working members or
actuating fluid for fluid operated valves which control
motive fluid for the plural working members, each of said
working members, either jointly or successively, operating
said single element or said multiway valve.
Subclass:
346
This subclass is indented under subclass 344. Apparatus
having a separate motive fluid control valve for each working
member and separate actuating means for each valve, and
wherein each working member separately controls an actuating
means for a valve controlling motive fluid for another of
said working members.
(1) Note. The motive fluid control valve for one working
member and the actuating means therefor may comprise a
cylinder port controlled by the working member of another.
Subclass:
347
This subclass is indented under subclass 339. Apparatus
having control valve means comprising either (1) a multiway
valve or (2) plural valve means and a single element for
actuating each of the valve means, said control valve means
controlling motive fluid for the plural working members or
actuating fluid for fluid operated valves which control
motive fluid for the plural working members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
345 for relatively movable nonrotary working members driving
relatively movable nonrotary pumping members having motive
fluid control by a single member responsive to the position
of each of the working members.
Subclass:
348
This subclass is indented under subclass 321. Apparatus in
which there is provided a member which rotates more than 3605
about a fixed axis, at least one portion of said member,
during different segments of each revolution thereof, serving
alternately as both a pumping member and a fluid motor
working member.
(1) Note. The motor and pump under this definition may be
of the rotary expansible chamber type as provided for in
Class 418, Rotary Expansible Chamber Devices, or of the
kinetic type as provided for in Class 415, Rotary Kinetic
Fluid Motors or Pumps.
Subclass:
349
This subclass is indented under subclass 321. Apparatus in
which there is provided means forming an expansible and
contractible chamber, said chamber serving both as an
expansible motor chamber and an expansible pumping chamber.
(1) Note. The pump fluid under this definition may comprise
a portion or component of the combustible charge of an
internal combustion engine, provided said charge is
discharged from the chamber prior to combustion thereof.
(2) Note. This definition excludes those pumps in which the
fluid is pumped in a separate chamber and then discharged
through the motor chamber even though the energy of the fluid
may be increased in the motor chamber. See subclasses 377+.
SEE OR SEARCH THIS CLASS, SUBCLASS:
105 for apparatus in which one fluid is caused to be pumped
by the condensation of a motivating fluid.
348 for rotary expansible chamber devices having a common
pump and motor working member in which the common member
defines a common rotating pump and motor chamber.
377 see (2) Note above.
Subclass:
350
This subclass is indented under subclass 321. Apparatus in
which the motor has a working member which is drivingly
connected to and located between opposite plural pumping
members, said motor working member and said plural pumping
members having a rotary motion of more than 360 deg. in a
single direction about a single common axis.
(1) Note. A rotary fluid motor under this definition may be
of the rotary expansible chamber type as provided for in
Class 418, Rotary Expansible Chamber Devices, or of the
kinetic type as provided for in Class 415, Rotary Kinetic
Fluid Motors or Pumps.
Subclass:
351
This subclass is indented under subclass 321. Apparatus in
which the pump has a pumping member which is drivingly
connected to and located between opposite plural motor
working members, said pumping member and said plural motor
working members having a rotary motion of more than 360 deg.
in a single direction about a single common axis.
(1) Note. A rotary fluid motor under this definition may be
of the rotary expansible chamber type as provided for in
Class 418, Rotary Expansible Chamber Devices, or of the
kinetic type as provided for in Class 415, Rotary Kinetic
Fluid Motors or Pumps.
Subclass:
352
This subclass is indented under subclass 321. Apparatus in
which the pump has a rotating pumping member and at least a
portion of the motor or motor part (e.g., armature, runner,
stator) is situated interiorly of the axial and radial limits
of said pumping member.
(1) Note. For purposes of this definition a mere drive
shaft which connects the motor working member to the pumping
member is not considered to be a portion of the motor.
(2) Note. The motor or motor part situated within the
pumping member is, in many instances, an integral or
monolithic portion of the pumping member.
(3) Note. The fluid motor under this definition may be of
the rotary expansible chamber type as provided for in Class
418, Rotary Expansible Chamber Devices, or of the kinetic
type as provided for in Class 415, Rotary Kinetic Fluid
Motors or Pumps.
Subclass:
353
This subclass is indented under subclass 352. Apparatus in
which the portion of the motor situated within the pumping
member is the rotor of an electric motor.
(1) Note. Included under this definition are those devices
in which the pumping member has an outer working face or
pumping portion and is made of some specific material (e.g.,
magnetizable) so as to also function as the motor working
member.
Subclass:
354
This subclass is indented under subclass 353. Apparatus in
which the electric motor has a stator which is positioned
radially interiorly of the rotor of the electric motor.
Subclass:
355
This subclass is indented under subclass 321. Apparatus in
which the motor has a rotating working member and at least a
portion of the pump or pump part (e.g., stator, runner, etc.)
is situated interiorly of the axial and radial limits of said
working member.
(1) Note. For purposes of the definition, a mere drive
shaft which connects the motor working member to the pumping
member is not considered to be a portion of the motor.
(2) Note. The pump or pump part situated within the motor
working member is, in many instances, an integral or
monolithic portion of the motor working member.
(3) Note. A rotary fluid motor under this definition may be
of the rotary expansible chamber type as provided for in
Class 418, Rotary Expansible Chamber Devices, or of the
kinetic type as provided for in Class 415, Rotary Kinetic
Fluid Motors or Pumps.
Subclass:
356
This subclass is indented under subclass 355. Apparatus in
which the rotating working member is the rotor of an electric
motor.
Subclass:
357
This subclass is indented under subclass 321. Apparatus in
which the pump is driven by an electric motor comprising
rotatable armature and stator portions, said armature
rotating in a chamber which is fluidly isolated from said
stator, and in which the pumped fluid communicates with said
armature containing chamber.
(1) Note. Included under this definition are devices in
which the armature containing chamber is either in open
communication with the pumped fluid or in restricted
communication with the pump fluid through a leakage path.
Subclass:
358
This subclass is indented under subclass 321. Apparatus in
which the pump and motor are carried in or from unitary
structure which is movable through a vertically disposed
fluid conduit by fluid under pressure applied beneath the
structure to elevate the pump and motor from a working
position at the lower end of the conduit to an inoperative
position at the upper end.
Subclass:
359
This subclass is indented under subclass 321. Apparatus in
which (1) both the motor and pump are of the rotary type, the
rotors of the motor and pump being connected to operate as a
unit, there being means provided to adjust the running
position of the rotor unit with respect to the pump casing or
(2) the driving connection between the motor and pump
includes generally aligned rotary pump and motor shafts,
there being means provided to adjust the running position of
one of the shafts relative to the other (e.g., radially,
axially, etc.).
(1) Note. Under section (1) of this definition the
adjustment may include the entire motor (e.g., rotor and
casing) or merely the rotor of the motor which is connected
to the pump rotor.
Subclass:
360
This subclass is indented under subclass 321. Apparatus in
which there is provided means designed to aid in securing or
detaching the pump and motor to or from each other or to or
from a supporting structure.
(1) Note. This definition is not intended to include those
devices in which a mere securing means is made easily
accessible, for example, bolts for securing the pump to the
motor which bolts are located so as to be readily removed
with the proper tool. Devices included under this definition
are, for example, a motor driven pump combined with a tool or
jig for assembling or disassembling one relative to the
other, or cooperating means between a pump and motor for
permitting ready assembly or disassembly without the use of a
tool. Despite the above limitations, however, if a claim
emphasizes the feature of assembly or disassembly it is
classifiable under this definition.
Subclass:
361
This subclass is indented under subclass 321. Apparatus in
which the pump and motor are rigidly secured to each other to
form an integral pump motor unit, the unit being adjustably
secured to a stationary frame or base so as to be selectively
movable relative thereto.
SEE OR SEARCH THIS CLASS, SUBCLASS:
359 for a motor and pump rotor which are adjusted as a unit
relative to the pump casing.
Subclass:
362
This subclass is indented under subclass 321. Apparatus in
which the power transmitting connection between the motor and
the pump includes a continuous flexible member, e.g., belt,
chain, etc., which moves in an endless path to transmit the
driving power.
Subclass:
363
This subclass is indented under subclass 321. Apparatus in
which the means for mounting the motor in driving relation to
the pump includes vibration dampening means (e.g., spring,
rubber block, etc.) for either (1) resiliently supporting the
pump or motor to a mounting (e.g., base, casing, etc.) on
which they are commonly supported, or (2) resiliently
attaching the motor to the pump or vice versa.
Subclass:
364
This subclass is indented under subclass 321. Apparatus in
which the motor comprises a chamber having a movable wall
portion (i.e., working member) cooperating therewith to form
an alternately expansible and contractable chamber, expansion
of said chamber being caused by the burning of a combustible
fluid within the chamber, said chamber expansion causing
movement of said movable wall portion, the movable wall
portion being connected to the pump.
(1) Note. The distinction between this subclass and
subclasses 375+ is one of disclosure. Thus, any patent which
has at least one embodiment of the invention which is
disclosed as an internal combustion engine, and which has a
claim specific to such embodiment, is classified in this
subclass even though the claimed apparatus is not limited to
internal combustion engine operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
34 for internal combustion engine driven pump having means
for controlling the engine in response to a pump or pump
fluid condition.
237 for internal combustion engines in which at least one
cylinder is convertible to operation as a pump.
324 for internal combustion engine driven pumps wherein the
pump is operated as a motor to start the internal combustion
engine.
Subclass:
365
This subclass is indented under subclass 321. Apparatus in
which the pump has a pumping member and the motor has a
working member, each of said members rotating about a common
axis, there being provided means for applying an axial force
(i.e., in the longitudinal direction of said axis of
rotation) to said pumping and working members in opposition
to the combined net axial force produced by said pumping and
working members.
(1) Note. This definition does not include a mere design of
the pump and motor rotors so as to provide zero axial thrust.
There must be provided some special means such as a separate
fluid reaction surface or spring, etc., to be included under
this definition.
Subclass:
366
This subclass is indented under subclass 321. Apparatus in
which there is provided means for allowing at least a portion
of the fluid which flows through the pump to either (1)
contact a motor or motor part, (2) induce flow of or
pressurize a secondary fluid which contacts a motor or motor
part, or (3) transfer heat to a secondary fluid or element
which contacts a motor or motor part; said means having as
its disclosed function the augmentation of cooling,
lubricating, sealing, or cleansing of the motor or motor
part.
(1) Note. This definition is limited to apparatus in which
the fluid which cooperates with the means in the manner set
forth in (1), (2), (3) of the above definition is that which
flows through the pump. Therefore, apparatus utilizing fluid
for cooling or lubricating a motor is included under this
definition only in those instances in which the cooling or
lubricating fluid itself flows through the pump or is
motivated to flow or in heat exchange relationship with fluid
which flows through the pump.
(2) Note. Apparatus comprising a pump which has as its sole
function supplying cooling or lubricating fluid to its
driving motor is considered to be an auxiliary of the motor
and does not form subject matter for this class and will be
found in the appropriate motor class. To come within the
scope of this definition, the pump must supply fluid to a
point of external use as well as supplying fluid for cooling
or lubricating its driving motor. Also, apparatus in which
the mere positional relationship between the pump and motor
causes the entire volume of pumped fluid to flow over or
around the motor to thereby necessitate cooling or
lubrication of the motor by reason of the positional
relationship are not intended to be included under this
definition, particularly those devices in which the entire
motor unit is positioned within a conduit or tank for
supplying pump fluid to or from the pump without design or
modification of the conduit, tank, or motor for enhancing a
cooling or lubricating function. For example, in the above
arrangement, the claiming of structure peculiar to cooling
(e.g., heat conducting fins) or structure peculiar to
lubricating (e.g., lubricant passages within a motor bearing)
would cause classification under this definition. Other
examples of structure peculiar to cooling would be the
recital of flow passages for directing all or a portion of
the pumped fluid to or through the motor or motor part, or
means for interconnecting the pumping and working members via
a material having high thermal conductivity characteristics.
(3) Note. For purposes of this definition, a bearing which
aids in supporting a motor working member is considered to be
a "motor part" as set forth in the above definition.
Therefore, apparatus utilizing pumped fluid for cooling or
lubricating a motor bearing forms subject matter within the
scope of this definition.
(4) Note. A secondary fluid utilized for cooling,
lubricating, sealing, or cleaning a motor or motor part forms
subject matter to be included under this definition when the
fluid is in heat exchange relationship with or caused to flow
through the motor by the pumped fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
357 for rotary electric motor driven pumps having pumped
fluid circulation within an isolated motor armature
containing chamber.
SEE OR SEARCH CLASS:
62, Refrigeration, subclass 505 for a
compressor-condenser-evaporator circuit in which there is
provided means for cooling the compressor motor by the
refrigerant.
Subclass:
367
This subclass is indented under subclass 366. Apparatus in
which an intermediate fluid is utilized for cooling,
lubricating or sealing the motor, said intermediate fluid
being separate from and in heat exchange relationship with
the pumped fluid.
(1) Note. Included under this definition are motors of the
type having a sealed casing for enclosing a secondary fluid
therein and means for augmenting heat transfer between the
secondary fluid and the pump fluid by way of the motor
casing.
Subclass:
368
This subclass is indented under subclass 366. Apparatus in
which there is provided means (e.g., auxiliary pump) in
addition to the pump driven by the motor, said additional
means either (1) serving to cause or aid in causing flow,
agitation, or pressurization of pump fluid which contacts the
motor or (2) receiving energy from the pump fluid to cause or
impart flow, agitation or pressurization of a secondary fluid
which contacts the motor.
Subclass:
369
This subclass is indented under subclass 366. Apparatus in
which there is provided a divided flow path or pump fluid
which has been acted upon by the pumping member of said pump,
one branch of said divided flow path serving to direct pump
fluid to the motor or part thereof.
(1) Note. To fall within the scope of this definition, flow
passage means must be present for the express purpose of
providing a divided flow path. Mere accidental divided flow
paths through or around a motor of conventional design, in
the absence of passage means provided for such purpose, is
excluded, e.g., one flow path between electric motor field
coil and casing and another between the field coil and
armature is not considered classifiable under this
definition.
Subclass:
370
This subclass is indented under subclass 369. Apparatus in
which the pump fluid which is directed to the motor or motor
part by way of said downstream divided flow path is returned
to the pump to be recirculated therethrough.
Subclass:
371
This subclass is indented under subclass 366. Apparatus in
which the pump fluid is directed to the motor or part thereof
upstream of and prior to engagement with the pumping member
of the pump.
Subclass:
372
This subclass is indented under subclass 321. Apparatus in
which both the pump and motor are cooled or lubricated by a
common or interrelated cooling or lubrication means.
(1) Note. The interrelated cooling means may include (1) a
fan, or equivalent devices, which force cooling fluid over
the pump and motor or (2) a cooling fluid which enters into
heat exchange relation with separate fluid cooling circuits
passing through the pump and motor.
Subclass:
373
This subclass is indented under subclass 321. Apparatus in
which there is provided means which has as its particular
function the prevention of heat transfer between the motor or
part thereof and the pump or part thereof, or between motive
fluid and pumped fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
366 for means providing for the cooling of the motor by the
pumped fluid which serve the purpose of preventing transfer
of heat between the pump and motor.
372 for motor driven pumps having interrelated cooling means
which may serve the purpose of preventing the transfer of
heat between the pump and motor.
Subclass:
374
This subclass is indented under subclass 321. Apparatus in
which, in addition to the pump motor, there is provided
secondary means adapted to impart driving energy to the pump,
said secondary means comprising either (1) an element (e.g.,
handle, tool) which is adapted for selective manual operation
at the will of a human operator, (2) a secondary motor for
driving the pump which is of a basically different type, or
(3) a mechanically driven element connected in driving
relationship with the pump and receiving its driving energy
from a source other than the working member of the pump
motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
323 for an auxiliary motor for driving the pump, said motor
receiving its driving energy from the pump fluid.
335 for a fluid current motor driven pump with alternative
drive means.
Subclass:
375
This subclass is indented under subclass 321. Apparatus in
which the motor is of the type which includes a movable
working member (e.g., piston, turbine runner, diaphragm,
etc.) which is motivated by a fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
329 for motors of the type which are motivated by the simple
force of weight of a fluent material.
364 for fluid motors of the type which are motivated by the
burning of a combustible mixture within an expansible chamber
of the motor (i.e., internal combustion engine).
Subclass:
376
This subclass is indented under subclass 375. Apparatus in
which the fluid utilized for motivation of the fluid motor
working member is steam, the steam, after having acted upon
the motor working member, being directed into the pump or
pump fluid flow line so as to commingle with the pump fluid.
Subclass:
377
This subclass is indented under subclass 375. Apparatus in
which the fluid motor is of the expansible chamber or
pulsator or fluid link type, the motor working member thereof
driving a pumping member which cooperates with a pumping
chamber to cause alternate expansion and contraction thereof
to pump fluid therefrom, the fluid expelled from said pumping
chamber flowing serially therefrom through the expansible
motor working chamber or the pulsator or fluid link chamber.
(1) Note. For the definition of pulsator or fluid link see
this class, subclass 383.
Subclass:
378
This subclass is indented under subclass 377. Apparatus in
which the fluid motor is of the pulsator or fluid link type.
(1) Note. For the definition of a pulsator or fluid link
see this class, subclass 383.
Subclass:
379
This subclass is indented under subclass 375. Apparatus in
which there is provided significantly claimed motive fluid
generating apparatus (e.g., pump boiler, etc.) for either (1)
increasing the pressure or velocity of a fluid which is used
to motivate the fluid motor or (2) decreasing the pressure of
a fluid which is withdrawn from the fluid motor to allow
atmospheric or ambient pressure fluid to cause motivation of
the fluid motor.
Subclass:
380
This subclass is indented under subclass 379. Apparatus in
which the motive fluid generating apparatus comprises an
internal combustion engine which is motivated by a
combustible mixture, the combustible mixture or a component
thereof being additionally used, either prior to, during, or
after combustion, as the source of motivating fluid for the
fluid motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
364 for an internal combustion engine which mechanically
drives a pump.
381 for a pump motor driven by combustion products in which
the combustion products generator is other than an internal
combustion engine.
Subclass:
381
This subclass is indented under subclass 379. Apparatus in
which the fluid which drives the fluid motor is the product
of a combustion process and the means to form the combustion
products is claimed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
380 for a pump motor driven by combustion products in which
the combustion products generator is an internal combustion
engine.
SEE OR SEARCH CLASS:
60, Power Plants, 39.01 for the combination of a pump
feeding to a combustion products generator, the combustion
products driving a motor to drive the pump, the pump
providing only the fluid utilized in the combustion products
generator; and subclasses 226.1+ for reaction motors in which
a pump is provided to supply air to a combustion products
generator and additionally supply air for use in an air jet.
Subclass:
382
This subclass is indented under subclass 379. Apparatus
including a plurality of pumping members which pump fluid for
external use, one of said pumping members also additionally
supplying motive fluid for a fluid motor which drives another
pumping member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
245 for serially arranged pump units in which the fluid
output of one of the units provides motive fluid for a fluid
motor driving another of the units.
Subclass:
383
This subclass is indented under subclass 379. Apparatus in
which the means for increasing the pressure of the motive
fluid comprises an enclosed chamber containing the motive
fluid (i.e., pulsator fluid) the boundaries of said chamber
being formed in part by a movable driving member (e.g., pulse
pump piston) and the fluid motor working member (e.g.,
piston), said fluid being in a state of total confinement
within the boundaries of said chamber during at least a
portion of driving member movement, whereby movement of the
driving member in one direction causes displacement of said
fluid so as to transmit energy from the driving member
through the medium of said fluid to said fluid motor working
member, and at least a portion of said fluid returning from
whence it came upon movement of the driven member in the
opposite direction.
(1) Note. A manually operated driving member is included
under this definition.
Subclass:
384
This subclass is indented under subclass 383. Apparatus in
which at least a portion of the confined fluid is
compressible (e.g., air).
(1) Note. Those devices in which only a portion of the
confined fluid is compressible and the other portion is
incompressible are included under this definition.
Subclass:
385
This subclass is indented under subclass 383. Apparatus in
which means is provided to supply additional fluid to or
exhaust fluid from the fluid confining chamber.
(1) Note. Means for merely prefilling the chamber with
fluid prior to operation of the device or means for emptying
the chamber during inactivity are not included under this
definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
378 for pulsator devices in which the pumped fluid flows
serially through the pulsator fluid containing chamber. Such
devices necessarily include means for allowing fluid flow to
and from the pulsator chamber and have not been
cross-referenced into this subclass or those indented
hereunder.
SEE OR SEARCH CLASS:
60, Power Plants, subclass 543 for a self-cycling pulsator,
per se, or driving a merely nominal load that has
self-operated pulse fluid purge and quantity adjusting
structure.
Subclass:
386
This subclass is indented under subclass 385. Apparatus in
which the means for supplying or exhausting fluid is made
effective in response to the attainment of a predetermined
position by the fluid motor working member.
Subclass:
387
This subclass is indented under subclass 385. Apparatus in
which the means for supplying or exhausting fluid is made
effective in response to the attainment of a predetermined
position by the driving member.
Subclass:
388
This subclass is indented under subclass 385. Apparatus in
which the means for supplying or venting fluid is made
effective in response to the existing pressure of the
confined fluid.
Subclass:
389
This subclass is indented under subclass 383. Apparatus in
which both the movable driving member and the fluid motor
working member are fabricated of either (1) flexible material
or (2) rigid members hinged or interfitted together so that
the members are movable relative to each other; the flexing
of the material or relative movement of the rigid members of
the driven member serving to cause flexing of the material or
relative movement of the rigid members of the fluid motor
working members.
Subclass:
390
This subclass is indented under subclass 379. Apparatus in
which the motive fluid generating apparatus comprises a fluid
pump (e.g., centrifugal, expansible chamber, axial flow,
etc.).
Subclass:
391
This subclass is indented under subclass 375. Apparatus in
which the pump is of the type having an expansible pumping
chamber, the exhaust motive fluid from the fluid motor being
directed into the pumping chamber or into the pump fluid
before the pump fluid enters the expansible pumping chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
377 for a fluid motor driven pump in which the fluid
discharged by the pump flows through the motor working
chamber.
Subclass:
392
This subclass is indented under subclass 375. Apparatus in
which there is provided a movable wall member which forms
both the motor working member and the pumping member, said
member comprising either (1) a piston which reciprocates
within a single continuous working chamber of uniform
internal cross-sectional dimensions to divide same into motor
and pump chamber portions or, (2) a deformable or collapsible
member (e.g., diaphragm, bellows, etc.) which has a portion
thereof secured to a single continuous working chamber to
divide same into motor and pump chamber portions; whereby,
application of motive fluid to said motor chamber portion
causes movement of said member for expanding said motor
chamber portion and simultaneously contracting said pump
chamber portion.
(1) Note. Plural members with substantially identical
external cross-sectional dimensions and which are in
face-to-face contact or spaced with an interposed rigid
element to form in effect a single unitary motor working and
pumping member are included under this definition. However,
plural members which are spaced solely by a body of fluid
enclosed therebetween which serves to transmit movement of
one of the members to another form pulsator or fluid link
devices and are excluded under this definition, such devices
being classified in subclasses 383+, above.
SEE OR SEARCH THIS CLASS, SUBCLASS:
56 for drilled well-type pumps having a free piston common
to both a pump and motor chamber.
383 for pulsator apparatus comprising a movable wall
separating a pump chamber from a motive fluid (i.e., pulsator
fluid) chamber.
Subclass:
393
This subclass is indented under subclass 392. Apparatus in
which the movable chamber dividing member is rigidly secured
to a second movable chamber dividing member which separates a
second single continuous chamber into a single motor and pump
chamber portions.
Subclass:
394
This subclass is indented under subclass 392. Apparatus in
which the movable member is deformable and comprises either a
wall portion formed of flexible material or rigid members
hinged or interfitted together so that the members are
movable relative to each other; the flexing of the material
or the relative movement of the members constituting the
movement which effects the work function of the expansible
pump and motor chambers.
Subclass:
395
This subclass is indented under subclass 394. Apparatus in
which the deformable member comprises a relatively thin
membrane like element having a peripheral edge portion, said
member being adapted to be associated with a surrounding or
encompassing tubular rigid chamber forming means and
extending transversely thereof to form a separating wall for
dividing said chamber into respective motor and pump
chambers, the outer peripheral edge of said membrane being in
sealing relationship with the encompassing wall of said
tubular structure.
(1) Note. The membrane like member need not span the entire
space within the encompassing wall of the tubular member, but
may be in the form of a ring or frustum having the inner
peripheral edge thereon in sealing engagement with a rigid
element movable relative to and coaxial with the encompassing
tubular member.
Subclass:
396
This subclass is indented under subclass 375. Apparatus in
which the pump has a movable pumping member which is driven
by plural fluid motor working members, said working and
pumping members having an alternate to-and-fro motion along a
common longitudinal axis of reciprocation, the pumping member
being located between said motor working members and
connected thereto in a manner such that all of said members
move in unison during the normal mode of operation (includes
flexible wall type motors and pumps).
(1) Note. Apparatus in which the fluid motor working
members comprise movable pistons and the pumping member
comprises a moving cylinder, or vice versa, is excluded under
this definition; see subclass 400, below, for subject matter
of this type.
SEE OR SEARCH THIS CLASS, SUBCLASS:
393 for plural unitarily movable common pump and motor
working members of the type in which the pumping faces of the
device are positioned intermediate the motor working faces.
Subclass:
397
This subclass is indented under subclass 375. Apparatus in
which the fluid motor has a movable working member for
driving plural pumping members, said working and pumping
members having an alternate to-and-fro motion along a common
longitudinal axis of reciprocation, the motor working member
being located between said pumping members and drivingly
connected thereto in a manner such that all of said members
move in unison during the normal mode of operation; (includes
flexible wall type motors and pumps).
(1) Note. Apparatus in which the fluid motor working member
comprises a movable piston and the pumping members comprise
movable cylinders, or vice versa, is excluded under this
definition; see subclass 400, below, for subject matter of
this type.
SEE OR SEARCH THIS CLASS, SUBCLASS:
393 for plural unitarily movable common pump and motor
working members of the type in which the motor working faces
of the device are positioned intermediate the pumping faces.
Subclass:
398
This subclass is indented under subclass 375. Apparatus in
which the fluid motor is of the type comprising a cylinder
and a piston, one of which is the movable motor working
member and cooperates with the other to form an expansible
motive fluid working chamber, said working member partaking
of an alternate to-and-fro motion in a straight line.
Subclass:
399
This subclass is indented under subclass 398. Apparatus in
which the fluid motor drives a pump of the type comprising a
cylinder and a piston, one of which is a movable pumping
member and cooperates with the other to form an expansible
pumping chamber, said pumping member partaking of an
alternate to-and-fro motion in a straight line.
Subclass:
400
This subclass is indented under subclass 399. Apparatus in
which (1) the motor piston is the movable motor working
member and is drivingly connected to the pump cylinder which
is the movable pumping member, or (2) the motor cylinder is
the movable motor working member and is drivingly connected
to the pump piston which is the movable pumping member.
Subclass:
401
This subclass is indented under subclass 399. Apparatus in
which the motor piston is the movable motor working member
and the pump piston is the movable pumping member, said motor
piston being drivingly connected to the pump piston in a
manner such that both of said pistons move together in unison
during the normal mode of operation.
(1) Note. Included under this definition are those devices
in which there is provided a valved pump piston and the motor
working member is connected to the pump piston valve to
actuate same and to drive the pump piston through a lost
motion connection.
Subclass:
402
This subclass is indented under subclass 401. Apparatus in
which there is provided means (e.g., spring) for continuously
applying a force to the pump piston or part connected thereto
for continuously urging the pump piston in a direction to
contract the pumping chamber.
(1) Note. The means for applying the continuous force may
be a double acting differential area fluid motor in which
fluid pressure is constantly applied to one piston working
face.
(2) Note. To be included under this definition the bias
means must be other than a mere weight.
Subclass:
403
This subclass is indented under subclass 401. Apparatus in
which the motor piston cooperates with a single continuous
motor cylinder to divide same into a pair of opposed
expansible working chambers, there being means provided for
controlling the supply or exhaust of motive fluid to or from
each of said opposed working chambers to drive the motor
piston in opposite directions.
Subclass:
404
This subclass is indented under subclass 403. Apparatus in
which the pump piston cooperates with a single continuous
pump cylinder to divide same into a pair of opposed
expansible pumping chambers, movement of said pump piston in
opposite directions serving to alternately expand and
contract said opposed pumping chambers, there being provided
means for controlling the inlet or discharge of pumped fluid
to each of said chambers which is not of the type which
controls serial flow of pumped fluid from one chamber to the
other.
Subclass:
405
This subclass is indented under subclass 375. Apparatus in
which the movable working member partakes of a unidirectional
rotary motion about a fixed axis.
(1) Note. The fluid motor under this definition may be of
the rotary expansible chamber type as provided for in Class
418, Rotary Expansible Chamber Devices, or of the kinetic
type as provided for in Class 415, Rotary Kinetic Fluid
Motors or Pumps.
Subclass:
406
This subclass is indented under subclass 405. Apparatus in
which the rotary motor working member is directly connected
to or integral with a rotary pumping member such that the
working member rotates the pumping member in unison
therewith.
SEE OR SEARCH THIS CLASS, SUBCLASS:
348 for a fluid motor driven pump having a rotor, at least
one portion of the rotor during different segments of a
revolution thereof serving alternately as both a pumping
member and a fluid motor working member.
Subclass:
407
This subclass is indented under subclass 406. Apparatus in
which the pump and motor rotors are connected together by a
shaft there being provided a central bearing means
intermediate the rotors for supporting the shaft, there being
no support means for the shaft outboard of either of the
rotors; i.e., the shaft is cantilevered or overhung from both
ends of the central bearing to carry the pump and motor
rotors.
Subclass:
408
This subclass is indented under subclass 406. Apparatus in
which the direction of flow of motive fluid through the motor
rotor is substantially parallel to the axis of rotation while
the fluid is acting on the rotor to produce work and the
direction of flow of pump fluid through the rotary pumping
member is also substantially parallel to the axis of rotation
while being acted upon by the pumping member.
Subclass:
409
This subclass is indented under subclass 406. Apparatus in
which the direction of flow of motive fluid through the motor
rotor is substantially parallel to the axis of rotation while
the fluid is acting on the rotor to produce work; the rotary
pumping member producing a rotary movement of the pump fluid
to utilize the centrifugal force developed thereby to effect
the pumping action.
Subclass:
410.1
Electric or magnetic motor:
This subclass is indented under subclass 321. Apparatus in
which the motor is of the type which includes a movable
working member (e.g., armature) which is motivated by
electricity or a magnetic field.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322 for a pump having a chamber which is expanded or
contracted by a magnetostrictive action.
353 for electric motor driven pumps in which the armature of
the motor is within a rotary pumping member.
Subclass:
410.2
Having piezoelectric driven blade:
This subclass is indented under subclass 410.1. Apparatus
wherein a pumping member includes a flat and thin, flexible
member which is motivated to provide the pumping action by
attaching to the flexible member a crystalline substance, and
a mechanical stress is produced by subjecting the crystalline
substance to an electrical voltage.
(1) Note. The blade for this subclass is cantilevered.
SEE OR SEARCH THIS CLASS, SUBCLASS:
413.2 for piezoelectric driven diaphragm.
Subclass:
410.3
Rotary expansible chamber pump:
This subclass is indented under subclass 410.1. Apparatus
wherein a pumping member is turning in a single direction
about a fixed or movable axis thereby increasing and
decreasing volume of an enclosed space which is adapted to
receive and discharge a fluid.
Subclass:
410.4
Interengaging rotary pumping members:
This subclass is indented under subclass 410.3. Apparatus
wherein a plurality of pumping members rotating about fixed
axes have surface portions disposed to maintain a line
contact therebetween against which pressure fluid reacts to
thereby form a boundary of the enclosed space.
(1) Note. Interengaging rotary members include gears,
helical screws, gerotors, etc.
Subclass:
410.5
Helical pumping member having planetary movement (e.g.,
scroll):
This subclass is indented under subclass 410.3. Apparatus
wherein the pumping member includes continuous working
portions in the form of a spiral lying in the same plane and
having increasing radius, and has circular translatory or
oscillatory movement without rotation about its axis while
the axis moves in an orbit.
Subclass:
411
Apparatus under subclasses 410.1+ having means for storing
electrical energy (e.g., battery, etc.), or for generating
electrical power for use by the electric motor which drives
the pump.
Subclass:
412
Apparatus under subclasses 410.1+ in which the electric motor
drives a pump of the type having an expansible and
contractible pumping chamber, at least a portion of said
pumping chamber being defined by a deformable wall which is
formed either of flexible material or rigid members hinged or
interfitted together so that the members are movable relative
to each other; the flexing of the material or the relative
movement of the members constituting the movement which
effects the pumping function of the expansible and
contractible chamber.
Subclass:
413.1
Diaphragm type:
This subclass is indented under subclass 412. Apparatus in
which the deformable wall comprises a relatively thin
membranelike member having a peripheral edge portion, said
member being adapted to be associated with a surrounding or
encompassing tubular rigid structure to extend transversely
thereof to form a closing wall for said tubular structure,
the outer peripheral edge of said membrane being in sealing
relationship with the encompassing wall of said tubular
structure.
(1) Note. The membranelike member need not span the entire
space within the encompassing wall of the tubular member, but
may be in the form of a ring or frustum having the inner
peripheral edge thereof in sealing engagement with a rigid
element movable relative to and coaxial with the encompassing
tubular member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
381 for a fluid motor driven pump in which a common
diaphragm forms both the pumping member and motor working
member.
Subclass:
413.2
Piezoelectric driven:
This subclass is indented under subclass 413.1. Apparatus
wherein the membranelike member is motivated to provide a
pumping action by attaching to the membrane a crystalline
substance, and a mechanical stress is produced by subjecting
the crystalline substance to an electrical voltage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
322 for working chamber of the pump made directly from a
material that expands and contracts when subjected to an
electric or a magnetic force.
410.2 for piezoelectric driven blade.
Subclass:
413.3
Of semiconductor material (e.g., silicon, germanium, etc.):
This subclass is indented under subclass 413.1. Apparatus
wherein the membranelike member is made of a solid
crystalline substance (e.g., silicon or germanium) that has
an electrical conductivity greater than an insulator but less
than a good conductor.
(1) Note. The membrane is constructed from the material
used in an electric printed circuit and produced by using the
same technique (e.g., etching, etc.) as used to produce the
printed circuit.
Subclass:
414
Apparatus under subclasses 410.1+ in which the motor has a
sealed housing, means being provided to cause the internal
pressure in said housing or some part thereof to be the same
as or bear some selected relationship to the ambient pressure
on the exterior of the housing.
(1) Note. The "ambient" pressure on the exterior of the
housing may be pump intake or discharge pressure.
Subclass:
415
Apparatus under subclasses 410.1+ in which the pump is of the
type comprising a rigid pumping member which alternately
moves to-and-fro (includes oscillatory movement).
Subclass:
416
This subclass is indented under subclass 415. Apparatus
wherein the working member of the electric motor alternately
moves to-and-fro (includes oscillatory movement).
(1) Note. Apparatus in which the electric motor armature or
core is merely claimed by name as a pump plunger or piston is
not sufficient to cause classification in this or indented
subclasses. However, the recital of a separate piston
connected to the armature or any additional pump structure
such as inlet or outlet ports will cause classification
herein.
Subclass:
417
This subclass is indented under subclass 416. Apparatus
wherein the working member of the pump and the working member
of the motor are either formed as a single element or rigidly
interconnected for unitary movement.
Subclass:
418
This subclass is indented under subclass 417. Apparatus in
which the rigid pumping member is provided with a pair of
oppositely directed pumping faces, said pumping member
cooperating with a single pump cylinder to divide same into a
pair of opposed expansible pumping chambers or with plural
pump cylinders to form plural plural expansible pumping
chamber; reciprocation of said pumping member in one stroke
direction serving to expand one pump chamber and
simultaneously contract another
Subclass:
419
This subclass is indented under subclass 415. Apparatus in
which the pump comprises a plurality of rigid pumping members
which move or are capable of moving relative to one another
incident to the operation of the pump.
Subclass:
420
Apparatus under subclasses 410.1+ in which there is provided
a rotary magnetic driving element and a rotary magnetic
driven element formed by or connected to the pumping member,
the power being transmitted from the driving to the driven
element by the magnetic attraction therebetween.
Subclass:
421
Apparatus under subclasses 410.1+ in which the electric
driving motor is sealed from the pump fluid by means of air
trapped inside the motor casing, such as in a diving bell.
Subclass:
422
Apparatus under subclasses 410.1+ in which a sealed, tubular
means is connected to or formed integrally in a cover or
casing enclosing the electric motor; the said means forming
or containing a service conductor (e.g., electric conduit,
lubricant conductor, etc.).
Subclass:
423.1
Apparatus under subclasses 410.1+ in which the working
members of both the pump and the motor perform their work by
means of a unidirectional rotary motion; the pump working
member acting to pump fluid by a centrifugal, centripetal or
screw effect, i.e., not by positive displacement of the fluid
by an expansible chamber effect.
Subclass:
423.11
This subclass is indented under subclass 423.1. Apparatus
wherein there is provided a sealing means to prevent pumped
fluid from leaving the pumping chamber and entering the motor
chamber.
SEE OR SEARCH CLASS:
277, Seal for a Joint or Juncture, for a generic sealing
means or process, 358 for a relatively rotatable radially
extending sealing face member (e.g., face, mechanical, etc.),
subclasses 409+ for a dynamic close proximity seal (e.g.,
contactless, fluent, etc.) or subclasses 500+ for a dynamic
circumferential contact seal for other than a piston.
Subclass:
423.12
This subclass is indented under subclass 423.1. Apparatus
wherein there are provided a bearing to support the shaft of
the motor or pump.
SEE OR SEARCH CLASS:
384, Bearings, for specific structure of bearings which can
be of general use.
Subclass:
423.13
This subclass is indented under subclass 423.12. Apparatus
wherein there is provided means to provide a fluid which is
not the pumped fluid to reduce the friction in the bearing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
366 for a means which provides pumped fluid to lubricate the
bearing.
Subclass:
423.14
This subclass is indented under subclass 423.1. Apparatus
wherein there is provided specific structure of the housing
for the pump or motor.
Subclass:
423.15
This subclass is indented under subclass 423.1. Apparatus
wherein there is provided a means to position and hold the
pump and motor combination in its working environment.
Subclass:
423.2
This subclass is indented under subclass 423.1. Apparatus
wherein the pump is specifically adapted to create a suction
to clean a surface.
SEE OR SEARCH CLASS:
15, Brushing, Scrubbing, and General Cleaning, 300.1 for a
suction cleaner having means to contact the surface to be
cleaned.
Subclass:
423.3
This subclass is indented under subclass 423.1. Apparatus
wherein the pump and motor are constructed to operate when
completely surrounded by the fluid to be pumped.
Subclass:
423.4
This subclass is indented under subclass 423.1. Apparatus
wherein the pump has rapidly rotating fins to impart a high
momentum to gas molecules to achieve a high vacuum.
Subclass:
423.5
This subclass is indented under subclass 423.1. Apparatus
wherein there is more than one pump and motor combination
used together.
Subclass:
423.6
This subclass is indented under subclass 423.1. Apparatus
wherein the motor shaft and pump shaft are not directly
connected and there is a means to transmit the power from the
motor shaft to the pump shaft which is not an elastomeric
endless belt.
SEE OR SEARCH THIS CLASS, SUBCLASS:
362 for a pump and motor interconnected by and endless
flexible transmission element.
SEE OR SEARCH CLASS:
74, Machine Element or Mechanism, for gearing and
transmissions, per se.
416, Fluid Reaction Surfaces (i.e., Impellers), subclass 170
for an impeller with specific drive or transmission means.
Subclass:
423.7
This subclass is indented under subclass 423.1. Apparatus
wherein there is provided specific details to the motor such
as the armature, rotor windings, circuits, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
353 for an electric motor armature within a rotary
nonexpansible chamber-type pumping member.
356 for a rotary nonexpansible chamber- type pumping member
within an electric motor armature.
SEE OR SEARCH CLASS:
318, Electricity: Motive Power Systems, for electric motors
with no significantly claimed pump. See 417/321 for example
of significantly claimed pump structure.
Subclass:
423.8
This subclass is indented under subclass 423.1. Apparatus
wherein there is provided cooling means using fluid other
than the pumped fluid in cool the pump or motor, or for
materials surrounding the pump or motor to conduct the heat
away from the pump or motor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
366 for a means to cool the motor using the fluid being
pumped.
Subclass:
423.9
This subclass is indented under subclass 423.1. Apparatus
wherein means are provided to block the entrance of foreign
matter to the pump chamber or means to separate foreign
material from the pumped fluid.
Subclass:
424.1
This subclass is indented under subclass 423.1. Apparatus in
which the pump and motor unit is provided with support means
such that when the unit is supported in operational position
to perform the pumping function the rotation axis of the pump
and motor is disposed vertically.
SEE OR SEARCH THIS CLASS, SUBCLASS:
421 for a vertically disposed rotary motor pump unit in
which the motor is sealed from a pumped fluid by means of a
body or air trapped in the motor housing.
Subclass:
424.2
This subclass is indented under subclass 424.1. Apparatus
wherein the pump is disposed above the motor.
Subclass:
425
This subclass is indented under the class definition.
Apparatus comprising a plurality of separate pumping units
each having a pumping member or a plurality of pumping
members operable in a single pumping chamber one of said
pumping members being operated by power means such as a motor
or driven shaft and another of the pumping members being
designed to be operated manually by an operator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
374 for a pump which is alternatively motor or manually
actuated.
Subclass:
426
This subclass is indented under the class definition.
Apparatus comprising a plurality of pumping units and control
means to change the operating characteristics of one relative
to another.
(1) Note. To be considered plural pumping units under this
definition each unit must operate in or comprise a pumping
chamber separate and distinct from the pumping chamber of
another unit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5 for plural pumps with a common inflow or outflow path and
means to control the drive means for said pumps individually
in response to a sensed condition in the common inflow or
outflow line.
62 for a plurality of pumps which may act alternatively in
series flow or parallel flow relationship.
250 and 251+, for multistage pumps with an interstage intake
or discharge, respectively.
286 for plural pumps with individual condition responsive
control of at least one.
Subclass:
427
This subclass is indented under subclass 426. Apparatus in
which at least one of the pumping units has a cycle of
operation and a valve (distributor) which operates in a given
manner or pattern in accordance with the cycle of operation
and the control means is effective to modify or disable the
pattern of operation of the valve.
Subclass:
428
This subclass is indented under subclass 426. Apparatus in
which at least one of the pumps has means to bypass fluid
from or around the pump to waste or back to supply and the
control means is effective to control said bypass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
288 for plural pumps or chambers with condition responsive
control of sequential operation of separate bypass or relief
passages for the pumps or chambers.
Subclass:
429
This subclass is indented under subclass 426. Apparatus in
which the pumping units are driven by a single common drive
member (e.g., shaft) and the control means is effective to
change the relationship of at least one of the pumps with
respect to the drive member.
(1) Note. The change in relationship of the pump to the
drive member may be disconnection therefrom.
Subclass:
430
This subclass is indented under the class definition.
Apparatus including means for contact with or by the pump
fluid effective to impart a continual motion to the pump
fluid in a manner or direction other than that which is
necessary to effect pumping of said fluid to cause solid
material to remain suspended in, or become entrained with
said pump fluid.
(1) Note. For classification in this subclass the means
must be clearly disclosed as having an agitating or whirling
function. A mere projection on or configuration of a piston
or a cylinder which would incidentally agitate or whirl the
pump fluid is not classified in this subclass unless such
projection or configuration is specifically disclosed to
perform such function.
(2) Note. Included under this definition are devices of the
type having an expansible and contractible chamber other than
that necessary to effect pumping into which pump fluid is
drawn and subsequently expelled for the disclosed purpose of
agitating the pump fluid.
SEE OR SEARCH CLASS:
92, Expansible Chamber Devices, subclass 173 for a piston
having a rotation imparting fluid impinging surface thereon.
Subclass:
431
This subclass is indented under subclass 430. Apparatus in
which said means comprises a fluid other than the pump fluid
which is applied to or injected into the pump fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
432 for means to apply a separate fluid to a pump valve.
Subclass:
432
This subclass is indented under the class definition.
Apparatus in which the pump is provided with a valve to
control the pump fluid and including means to apply or direct
a fluid other than the pump fluid to some portion of the
valve.
(1) Note. The fluid may be applied to the valve for various
purposes such as lubricating, sealing, cooling, flushing,
etc. However, a separate fluid applied to a pump valve
portion for the sole purpose of actuating the valve is
excluded under this definition. See subclass 507, below, for
such subject matter.
(2) Note. The pre-filling of a chamber containing a valve
to form a liquid seal for the valve is considered to be means
to apply a fluid to the valve under this definition.
(3) Note. A separate fluid which is injected in or
entrained by the pump fluid upstream of the valve so as to
intermingle with the pump fluid before contact with the valve
is excluded from this definition.
Subclass:
433
This subclass is indented under subclass 432. Apparatus in
which the fluid pumped is a gas and a body of liquid is
provided which contacts the valve and through which the
pumped gas passes, the liquid acting to prevent gas leakage
through the valve when closed.
Subclass:
434
This subclass is indented under the class definition.
Apparatus in which the pump fluid is liquid, the pump
including a port or valve other than the ports or valves
necessary to the normal operation of the pump, said port or
valve being positioned in the pump chamber or pump fluid
conduit to allow pump fluid therein to flow through said port
or upon actuation of said valve to drain said pumping chamber
or conduits.
(1) Note. When the drain means comprises a valve, the valve
may not be of the type which cyclically controls the
discharge of pump fluid as a consequence of operation of the
pump and must be disclosed as for the purpose of draining the
pump after termination of the use thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
435 for a separate port or noncyclic valve for venting or
filling a pump portion.
440 for a separate selectively controlled noncyclic valve
for a purpose other than draining a pump portion.
443 for a pressure responsive distributor opened in response
to pumping member position.
446 for means for selectively holding a pressure responsive
distributor open.
447 for a pressure responsive distributor which is
constantly biased open.
493 for a pumping member controlled inlet or outlet port
including plural cyclically controlled inlet or outlet flow
paths.
503 for multiple cyclic outlet paths.
SEE OR SEARCH CLASS:
137, Fluid Handling, subclass 565.36 for a valve means for
draining a pump tube. Class 417 takes a valve designed to
drain a pump tube or chamber where the pump is claimed or
when some structure peculiar to a pump is claimed. The mere
claiming of a pump barrel or cylinder does not preclude
classification in Class 137.
166, Wells, 316 for well structure having a valve means
associated therewith and operable to drain a portion of the
well structure.
251, Valves and Valve Actuation, 142 for a fluid flow path
combined with a means to control the flow of fluid through
said flow path, particularly subclasses 149.1+ for a valve
operated by joining the flow path sections together and
subclasses 145+ for a valve for controlling a port in a pipe
side where the flow path sections or the pipe constitute an
inlet or discharge pipe of a pump.
Subclass:
435
This subclass is indented under the class definition.
Apparatus in which the pump fluid is liquid, the pump
including port or valve other than the ports or valves
necessary to the normal operation of pump, said port or valve
being positioned in the pump chamber or pump fluid conduit to
permit the escape of gases from the pump or conduit or to
permit the filling of the pump or conduit with liquid for
priming purposes.
(1) Note. When the venting or filling means comprises a
valve, the valve may not be of the type which cyclically
controls the supply or discharge of pump fluid as a
consequence of operation of the pump.
SEE OR SEARCH THIS CLASS, SUBCLASS:
199.1 for diverse pumps one of which may be a priming pump
for another.
425 for plural pumping members one of which is power driven
and one manually operated.
434 for a separate port or noncyclic valve for draining a
pump chamber or conduit.
440 for a separate selectively controlled noncyclic valve
for a purpose other than venting or filling a pump portion.
443 for a pressure responsive distributor opened in response
to pumping member position.
446 for means for selectively holding a pressure responsive
distributor open.
447 for a pressure responsive distributor which is
continuously biased open.
493 for a pumping member controlled inlet or outlet port
including plural cyclically controlled inlet or outlet flow
paths.
502 for multiple cyclic inlet paths.
503 for multiple cyclic outlet paths.
Subclass:
436
This subclass is indented under the class definition.
Apparatus in which there is provided a fluid conduit and a
separate impelling member for propelling fluid through the
conduit, the impelling member having motion or a component of
motion which is transverse to the direction of fluid flow in
the conduit said transverse motion or component of motion
being effective to propel or aid in the propulsion of the
fluid through the conduit.
Subclass:
437
This subclass is indented under the class definition.
Apparatus comprising a chamber having a wall portion or
pumping member movable to effect a change in volume of said
chamber and means to control the flow of pump fluid into or
out of said chamber.
(1) Note. The term distributor as used in the titles and
definitions under this subclass is defined as a means which
comprises or includes a part which is movable relative to the
pumping member of an expansible chamber-type pump to control
a pump fluid port or passage in such a manner as to
cyclically control supply or discharge of pump fluid to or
from the pump.
(2) Note. Collected in this subclass are original copies of
patents directed to expansible chamber-type pumps in which
the means for controlling flow of pump fluid into or out of
the pump chamber is selectively controlled by a human
operator (e.g., manually operated valve, finger obturated
port), it being necessary for the operator to operate said
fluid control means during each complete cycle of expansion
and contraction of the pump chamber to enable the pump to
perform its pumping function.
Subclass:
438
This subclass is indented under subclass 437. Apparatus in
which the fluid pumped is a gas and means are provided to
introduce a liquid into the gas while it is in the pump
chamber or prior to its introduction into the chamber for the
purpose of cooling the gas.
SEE OR SEARCH THIS CLASS, SUBCLASS:
432 for the application of a separate fluid to a pump valve
for lubricating, cooling, etc.
Subclass:
439
This subclass is indented under subclass 437. Apparatus in
which the expansible chamber in addition to the normal inlet
for pump fluid is provided with a connection to a space in
the pump which does not form a part of the expansible chamber
or the flow path of pump fluid to or from the chamber so as
to draw fluid from said space.
(1) Note. The space may be one which expands and contracts
incident to the operation of the pump (e.g., crankcase on the
nonpumping side of a piston) or a leakage collection area,
etc. The connection may be directly into the expansible
chamber or may be to the pump fluid intake line upstream of
the intake valve.
Subclass:
440
This subclass is indented under subclass 437. Apparatus
provided with valve means other than that necessary for
controlling inlet and discharge of pumped fluid to the pump
chamber during normal operation of the pump, said valve means
being operable to control the flow of pumped fluid to or from
the pump chamber or conduit therefor.
(1) Note. A valve positioned to permit the independent flow
of fluid around the pump from the inlet of the pump to the
pump discharge is included under this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
279 for a pump fluid control valve which is responsive to a
pump condition.
434 for a separate port or valve for filling or draining a
pump portion.
Subclass:
441
This subclass is indented under subclass 440. Apparatus in
which said valve means is effective to control the pump fluid
in the line of normal flow to or from the pump chamber, i.e.,
a throttle or stop valve in the flow line, not a valve which
diverts the pump fluid flow from the normal course.
Subclass:
442
This subclass is indented under subclass 437. Apparatus in
which a plurality of inlet or a plurality of outlet
distributors are provided in a single chamber and means are
provided for selectively disabling at least one of the plural
distributors such that fluid may be supplied to or discharged
from the chamber through different distributors at different
times.
(1) Note. The use of all the distributors in one mode of
operation and less than all the distributors in another mode
of operation is included in this subclass.
Subclass:
443
This subclass is indented under subclass 437. Apparatus in
which the means for controlling pump fluid to or from the
pump chamber includes valve means of the type which normally
opens or closes responsive to a pressure differential between
the pump chamber and an inlet or discharge conduit for
cyclically controlling pump fluid for the pumping operation
and including means operable as a result of the pumping
member being moved to a given position in the pump chamber
for moving said valve to open position irrespective of said
pressure differential.
(1) Note. A pressure responsive distributor which can be
selectively opened only when the pumping member is at a given
position in the pump chamber is included under this
definition, e.g., a pressure responsive foot valve which is
capable of being opened by relative rotation of a
reciprocating pumping member when same is at the end of its
reciprocatory stroke.
Subclass:
444
This subclass is indented under subclass 443. Apparatus in
which the pressure responsive distributor which is moved to
open position is located on or carried by a piston-type
pumping member (includes diaphragm-type pumping member).
Subclass:
445
This subclass is indented under subclass 444. Apparatus in
which the expansible chamber pump is additionally provided
with valve means located within a fixed wall portion of the
pump chamber forming means (e.g., cylinder), said valve means
being of the type which normally opens or closes responsive
to a pressure differential between the pump chamber and an
inlet or discharge conduit for cyclically controlling pump
fluid for the pumping operation and including means operable
as a result of the pumping member being moved to a given
position in the pump chamber for moving said valve to open
position irrespective of said pressure differential.
Subclass:
446
This subclass is indented under subclass 437. Apparatus in
which the means for controlling pump fluid to or from the
pump chamber includes valve means of the type which normally
opens or closes responsive to a pressure differential between
the pump chamber and an inlet or discharge conduit for
cyclically controlling pump fluid for the pumping operation
and includes means for moving and holding said valve in open
position irrespective of said pressure differential.
SEE OR SEARCH THIS CLASS, SUBCLASS:
297 for an expansible chamber pump having a cyclically
operated valve in which the operation of said valve is
modified responsive to a pump condition.
443 for a pressure responsive distributor which is moved to
open position responsive to pumping member position.
SEE OR SEARCH CLASS:
137, Fluid Handling, 522 for a direct response line
condition responsive valve having external means for biasing
valve open.
Subclass:
447
This subclass is indented under subclass 437. Apparatus in
which the means for controlling pump fluid to or from the
pump chamber includes valve means of the type which normally
opens or closes responsive to a pressure differential between
the pump chamber and an inlet or discharge conduit for
cyclically controlling pump fluid for the pumping operation
and including means other than the pump fluid (e.g., spring,
weight, float, etc.), for continuously exerting a force on
said valve in the valve opening direction.
Subclass:
448
This subclass is indented under subclass 437. Apparatus in
which the pumping member is provided with an operating rod
and the pump as a whole is mounted in a vertically disposed
pipe or tube for conducting fluid and the pump and its
mounting in the tube are so related that the whole pump is
removable from the tube solely by manipulation of the
operating rod.
Subclass:
449
This subclass is indented under subclass 448. Apparatus in
which the pump is provided with a piston which is fixed with
respect to the pipe or tube and is stationary during
operation of the pump, but is so mounted as to be removed
with the pump unit.
Subclass:
450
This subclass is indented under subclass 448. Apparatus in
which the means for mounting the pump in the tube includes
relatively movable parts for positively holding the pump
against movement in the tube; the release of the pump being
effected by the movement of one of the parts by the operating
rod for the pumping member.
Subclass:
451
This subclass is indented under subclass 437. Apparatus in
which there is a valve structure located in a stationary wall
of the expansible chamber and there are means carried by the
valve structure which cooperates with the pumping member, to
permit the removal of the valve structure along with the
pumping member from the expansible chamber.
Subclass:
452
This subclass is indented under subclass 451. Apparatus in
which the means on the valve structure which cooperates with
the pumping member comprises portions on both the valve
structure and the pumping member that are normally
unconnected and are movable into engagement with each other
to effect the removal of the valve structure.
Subclass:
453
This subclass is indented under subclass 452. Apparatus in
which the engageable portions are formed by interengaging
helical screw threads.
Subclass:
454
This subclass is indented under subclass 437. Apparatus
comprising means designed to facilitate the removal or
replacement of a valve of the pump or to facilitate access to
a valve of the pump for inspection or repair, etc.
(1) Note. Excluded from this definition are mere securing
means for parts which would permit the removal or replacement
of a valve or access thereto unless said securing means is
disclosed as being specifically designed for said purpose.
SEE OR SEARCH THIS CLASS, SUBCLASS:
448 for a pump mounted in a vertical tubular flow conduit
removable as a unit by driving rod manipulation.
451 for a valve element mounted in a fixed chamber wall and
selectively removable with the pumping member.
SEE OR SEARCH CLASS:
92, Expansible Chamber Devices, subclass 128 for expansible
chamber devices having assembly or disassembly facilitating
means.
137, Fluid Handling, subclass 454.4 for removable, pump-type
valve head and seat unit in which no pumping member is
claimed.
Subclass:
455
This subclass is indented under subclass 437. Apparatus in
which the means to control the pump fluid is a valve means,
said valve means having parts which in addition to their
relative movement for the valving function are relatively
movable for a nonfluid flow controlling function.
(1) Note. The valve parts are usually to reduce static
friction or cause uniform wear of a valve element and its
seat.
SEE OR SEARCH CLASS:
137, Fluid Handling, 330 and the search there noted, for
valves, per se, having a similar function.
Subclass:
456
This subclass is indented under subclass 437. Apparatus
including two or more distributors through which the pumped
fluid must pass serially in the course of flowing to the pump
chamber or from the pump chamber to the point of use, each
distributor having a cyclically moved flow controlling
element which is capable of or constrained to move relative
to the flow controlling element of another.
SEE OR SEARCH THIS CLASS, SUBCLASS:
502 for multiple cyclic outlet paths from a single pump
chamber including a cyclically controlled bypass valve
downstream of the discharge distributor from the chamber.
Subclass:
457
This subclass is indented under subclass 456. Apparatus in
which a part of the pump chamber wall which is traversed by
the pumping member (i.e., cylinder or liner) has an absolute
motion and forms or carries a part forming the movable
element of at least one of said serially arranged
distributors.
Subclass:
458
This subclass is indented under subclass 456. Apparatus in
which said two or more serially arranged distributors are of
the type which move to an open or closed position in response
to a pressure differential in the pumping chamber and the
inlet or discharge conduit.
Subclass:
459
This subclass is indented under subclass 458. Apparatus in
which said two or more serially arranged pressure responsive
distributors are both located within or carried by a piston
type pumping member and serves to control fluid flow through
a passage formed in the piston.
(1) Note. For definition of structure necessary to form a
valved piston, see subclass 545 definition and (1) Note
thereunder.
SEE OR SEARCH THIS CLASS, SUBCLASS:
261 for a piston having relatively movable serial
distributors between stages of successive stage pumping
units.
SEE OR SEARCH CLASS:
137, Fluid Handling, 512 for plural direct responsive type
valves.
Subclass:
460
This subclass is indented under subclass 437. Apparatus in
which the expansible chamber pump comprises a cylinder having
a piston (includes diaphragm) movable therein and in which
incident to the operation of the pump, the cylinder has an
absolute movement.
(1) Note. Those pumps in which it involves an obvious
matter of choice or reversal of parts whether the piston is
stationary and the cylinder movable or vice versa will not be
classified under this definition even if the claims identify
the cylinder as the movable element. However, where the
claims set forth a specific power transmission element (e.g.,
crank) for moving the cylinder, classification under this
definition results.
(2) Note. An open ended cylindrical member or sleeve in
which the piston reciprocates and which has an absolute
sliding, rotary, or oscillating motion on its longitudinal
axis is not considered to be a moving cylinder under this
definition and is classified in subclass 509, below.
However, if the cylindrical member carries or has formed as a
part thereof the end wall of the expansible chamber (i.e.,
abutment) it is considered to be a cylinder and is included
under this definition even if the sole disclosed purpose of
the sliding, rotating, or oscillatory movement is for valving
pumped fluid.
(3) Note. A cylinder which has an absolute reciprocating,
rotary or oscillatory motion on an axis other than the
longitudinal axis thereof is included under this definition
even if the sole disclosed purpose of such motion is for the
valving of pumped fluid and regardless of whether the
cylinder forms a portion of the chamber end wall (e.g., the
entire abutment surface for the pumped fluid may be provided
by a stationary valve element).
SEE OR SEARCH THIS CLASS, SUBCLASS:
269 for pumps having three or more cylinders arranged in
parallel, radial, or conical relationship with a rotary
transmission axis which cylinders may move incident to the
operation of the pump.
449 for a pump mounted in a vertical tubular flow conduit
removable as a unit by driving rod manipulation and having a
fixed piston and moving cylinder.
457 for an expansible chamber-type pump having serially
arranged distributors for controlling inlet or discharge of
pump fluid wherein one of the distributors is formed in part
by a moving cylinder having a port cooperating with a
stationary ported member.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, 472 for motors or
pumps having three or more parallel or radially arranged
cylinders which may move incident to operation of the motor
or pump and subclasses 196+ for an expansible chamber-type
motor or a device disclosed and claimed generically as a pump
or motor which has a moving cylinder.
92, Expansible Chamber Devices, 117 for cylinders mounted
for movement incident to expansion or contraction of the
expansible chamber.
Subclass:
461
This subclass is indented under subclass 460. Apparatus in
which the cylinder has an absolute rotational or oscillatory
motion about the longitudinal axis thereof (i.e., the axis of
reciprocation of a piston therein) during operation of the
pump.
Subclass:
462
This subclass is indented under subclass 460. Apparatus in
which the cylinder is mounted on a fixed supporting structure
for movement relative thereto, during operation of the pump,
in a circular path of more than 360 deg. in a single
direction about an axis other than the longitudinal axis of
the cylinder (i.e., other than the axis of reciprocation of a
piston therein), said cylinder and the piston therein being
mechanically interconnected in a manner which causes
reciprocation of the piston relative to said cylinder upon
rotation thereof.
Subclass:
463
This subclass is indented under subclass 462. Apparatus in
which the relatively reciprocating piston has a second
pumping chamber formed integral therewith, said second
pumping chamber being provided with a relatively
reciprocating piston.
Subclass:
464
This subclass is indented under subclass 460. Apparatus in
which either the cylinder or piston therein is pivotally
mounted relative to a fixed support and the other is driven
by a mechanism (e.g., crank or lever) in a manner which
necessitates alternate to-and-fro motion of less than 360
deg. of the cylinder about an axis formed by said pivotal
mounting, said axis being obliquely disposed (i.e., not
parallel or coincident) relative to the longitudinal axis of
the cylinder (i.e., the axis of working member
reciprocation).
Subclass:
465
This subclass is indented under subclass 464. Apparatus in
which either (1) the cylinder or (2) the piston or member
rigid therewith (e.g., piston rod) is provided with a pump
chamber communicating passage which terminates exteriorly
thereof, the terminal portion of said passage (i.e., port)
being in sliding engagement with and movable relative to a
stationary element having at least one port, said relative
sliding movement serving to change the relative alignment of
said passage terminal portion and said stationary port for
controlling the flow of pumped fluid to or from the pump
chamber.
Subclass:
466
This subclass is indented under subclass 460. Apparatus in
which the cylinder has an absolute to-and-fro motion along a
fixed axis and is provided with an external portion forming a
chamber communicating port, said port forming portion being
in sliding engagement with and movable relative to a
stationary element having at least one port, movement of said
cylinder relative to said stationary element serving to
change the relative alignment of said ports for controlling
the flow of pumped fluid to or from the pump chamber.
Subclass:
467
This subclass is indented under subclass 460. Apparatus
comprising two or more cylinders, each of said cylinders
having an absolute movement and capable of or constrained to
move relative to each other.
SEE OR SEARCH CLASS:
92, Expansible Chamber Devices, subclass 66 for relatively
movable working members comprising or disposed within movably
mounted cylinders.
Subclass:
468
This subclass is indented under subclass 460. Apparatus in
which the movable cylinder has either (1) an external surface
or (2) a member rigidly secured externally thereof; said
surface or member forming a piston type pumping member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
258 for successive stage pumps having a reciprocating
cylinder with an integral piston or external pumping face.
Subclass:
469
This subclass is indented under subclass 460. Apparatus in
which both the cylinder and the piston have an absolute
rectilinear to-and-fro motion along the same fixed axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
466 for a cylinder and piston which reciprocate on a common
axis with the inlet or discharge of pump fluid being
controlled by cooperating ports in the cylinder and a fixed
member.
Subclass:
470
This subclass is indented under subclass 437. Apparatus in
which the expansible chamber pump is disclosed as being
utilized for the purpose of producing pressure below that of
the surrounding medium (i.e., vacuum pump), the pumping
member of which is driven in a chamber collapsing direction
by means of an element (e.g., cam) which is unsecured to, and
adapted for abutment with the pumping member or portion rigid
therewith to drive same, there being provided separate means,
other than the pumped fluid, (e.g., spring) associated with
the pumping member for continuously urging said pumping
member in a chamber expanding direction.
(1) Note. For classification under this definition, the
pump must be positively disclosed as being utilized for the
purpose of producing a vacuum. Expansible chamber type pumps
having the above defined relationship between the pumping
member, abutment drive, and biasing means, but which are not
disclosed for use in vacuum production are classified below
on other features.
SEE OR SEARCH CLASS:
92, Expansible Chamber Devices, subclass 129 for an
expansible chamber device having an abutment connection
between the working member thereof and a power transmission
element.
Subclass:
471
This subclass is indented under subclass 437. Apparatus in
which the expansible chamber-type pump is disclosed as being
utilized for the purpose of producing pressure greater than
atmospheric the pumping member of which is driven in a
chamber expanding direction by means of an element (e.g.,
cam) which is unsecured to, and adapted for abutment with the
pumping member or portion rigid therewith to drive same,
there being provided separate means, other than the pumped
fluid, (e.g., spring) associated with the pumping member for
continuously urging said pumping member in a chamber
collapsing direction.
(1) Note. Expansible chamber-type pumps having the above
defined relationship between the pumping member, abutment
drive, and biasing means are excluded under this definition
if disclosed as being utilized for the purpose of producing a
vacuum, such pumps being classified below on other features.
SEE OR SEARCH CLASS:
92, Expansible Chamber Devices, subclass 129 for an
expansible chamber device having an abutment connection
between the working member thereof and a power transmission
element.
Subclass:
472
This subclass is indented under subclass 437. Apparatus in
which the expansible pump chamber comprises a flexible
structure which is capable of expanding to increase the
volumetric capacity thereof, said structure comprising (1) a
tube of flexible material having a circumferentially
corrugated or pleated wall, (2) at least four plates, each
plate having a central opening therein defining an edge
inwardly of the outer peripheral edge thereof, said plates
being arranged in superposed relation with adjacent plates
secured along their inner and outer edges alternately or (3)
a pair of rigid plate like members pivoted together along a
portion of their peripheral edges, the remaining peripheral
edge portion of said plates being joined together by a
flexible member which is pleated in some position of relative
pivotal movement of the plate like members.
SEE OR SEARCH CLASS:
92, Expansible Chamber Devices, 34, for bellows-type
expansible chamber devices, per se.
Subclass:
473
This subclass is indented under subclass 472. Apparatus
comprising a plurality of separate pump chambers each
including a separate bellows.
(1) Note. The separate bellows may have a common wall.
SEE OR SEARCH CLASS:
92, Expansible Chamber Devices, subclass 37 for plural
bellows-type expansible chamber devices, per se.
Subclass:
474
This subclass is indented under subclass 437. Apparatus
comprising a relatively long pumping chamber, said chamber
having one of its walls formed of flexible material and means
for collapsing said flexible wall either progressively or
sequentially in a direction along the length of the chamber,
the collapsing of said chamber wall serving to control the
inlet of pump fluid to or the discharge of pump fluid from
said chamber.
(1) Note. A flexible chamber wall pump which is directly
deformed by a rigid element having a planetating or nutating
motion is excluded under this definition, such subject matter
being classified in Class 418. For the definition of
planetary or nutating motion, see Class 418, subclasses 49
and 54, respectively. A roller mounted on a rotating arm is
not considered to comprise planetary movement.
SEE OR SEARCH CLASS:
418, Rotary Expansible Chamber Devices, subclass 56 for a
nonmetallic working member having planetary movement, and
subclasses 153+ for a rotary expansible chamber pump or motor
having a resilient, nonmetallic working member.
Subclass:
475
This subclass is indented under subclass 474. Apparatus
comprising two or more distinct isolated relatively long
pumping chambers, each of said pump chambers having one of
its walls formed of flexible material, and means for
progressively or sequentially collapsing each of said
flexible walls.
(1) Note. A single elongated flexible wall member which is
collapsed by plural engagement elements at spaced locations
along its length to divide the chamber formed by said
flexible wall into progressively formed chamber portions is
not considered to constitute plural chambers under this
definition. Also, excluded under this definition, are
devices in which a secondary pump chamber is provided which
has the sole function of enhancing the operation of another
collapsible wall chamber (e.g., vacuum producing pump for
restoring the shape of a flexible wall pump after deformation
thereof).
Subclass:
476
This subclass is indented under subclass 474. Apparatus in
which the means for collapsing the flexible chamber wall
comprises an element which either directly contacts said wall
or an additional flexible material member interposed between
the wall and said element, the collapsing element having a
rolling or sliding engagement with the flexible wall or
interposed flexible material member in performing the wall
collapsing function.
Subclass:
477.1
Plural spaced engagement member or member portions:
This subclass is indented under subclass 476. Apparatus in
which there is provided two or more elements or two or more
portions of a common element which directly contact the
flexible wall or interposed flexible member for rolling or
sliding engagement therewith at spaced locations thereon,
each of said elements or element portions serving to collapse
the flexible wall. [figure]
Subclass:
477.11
Adjustable backing:
This subclass is indented under subclass 477.9. Apparatus
wherein the position of the backing member of the flexible
wall is changeable.
(1) Note. The change of position of the backing member
accommodates different sizes of the flexible wall, or
controls the degree of closure of the flexible wall, or eases
the insertion or removal of the flexible wall or interposed
flexible member. [figure]
Subclass:
477.12
Specific flexible wall or interposed flexible member:
This subclass is indented under subclass 477.1. Apparatus
wherein significance is attributed to a shape or material of
the flexible wall or interposed flexible member.
(1) Note. The interposed flexible member may include a
particular means associated with the flexible wall to reduce
wear on the flexible wall by the rolling or sliding elements.
[figure]
Subclass:
477.13
Flexible tube without backing member:
This subclass is indented under subclass 477.1. Apparatus
wherein the flexible member is a tube, and a portion of the
tube which comes in contact with the rolling or sliding
members does not have a backing member. [figure]
Subclass:
477.14
Endless chain or belt:
This subclass is indented under subclass 477.1. Apparatus
wherein the rolling or sliding members are secured to an
endless chain or a belt and driven thereby. [figure]
Subclass:
477.2
Cassette:
This subclass is indented under subclass 477.1. Apparatus
wherein the flexible wall or interposed flexible member is
contained in a housing; said housing is interchangeable with
similar housings.
(1) Note. At least one housing is placed in a base unit in
order to be activated by a drive. [figure]
Subclass:
477.3
Specific rollers or slides structure:
This subclass is indented under subclass 477.1. Apparatus
wherein a significance is attributed to the rolling or
sliding elements (e.g., a specified shape, a specified
positional relation, or a specified material constituents).
[figure]
Subclass:
477.4
Helical slide:
This subclass is indented under subclass 477.3. Apparatus
wherein the sliding element is in the shape of a helix.
[figure]
Subclass:
477.5
Roller axes or slide contact surfaces at significant angle
with drive axis:
This subclass is indented under subclass 477.3. Apparatus
wherein axes of rotation of the rolling elements or contact
surfaces of the slide elements are positioned at an angle to
the axis of a shaft or rotor which moves the rolling or
sliding elements.
(1) Note. The angle is between 30 degrees and 90 degrees.
(2) Note. The rollers or the slides which merely return the
flexible wall or interposed flexible member to undeformed
shape are also included in this subclass.
(1) Note. The biasing can be caused by means such as a
spring or weight or fluid pressure.
(2) Note. The axes of the rolling elements or the contact
surfaces of the slide elements which have adjustable angles
with respect to the axis of the shaft or rotor are included
in this subclass. [figure]
Subclass:
477.6
Positively driven rollers:
This subclass is indented under subclass 477.3. Apparatus
wherein the rolling members are directly driven by a rotating
drive means, such as shaft or gear for rotation.
(1) Note. The drive means causes the rolling numbers to
rotate even if the flexible members were removed.
(2) Note. The arrangement can be similar to a sun gear
driving planetary gears. [figure]
Subclass:
477.7
Biased rollers or slides:
This subclass is indented under subclass 477.3. Apparatus
wherein the rolling or sliding elements are biased to engage
or to disengage the flexible wall or interposed flexible
member.
(1) Note. The biasing can be caused by means such as a
spring or weight or fluid pressure. [figure]
Subclass:
477.8
Adjustable rollers or slides:
This subclass is indented under subclass 477.3. Apparatus
wherein the position of the rolling or sliding elements are
changeable.
(1) Note. The change of position of the rolling or sliding
elements accommodate different sizes of the flexible wall or
interposed flexible member, or vary wear on the elements, or
vary an output of the pump, or ease insertion or removal of
the flexible member. [figure]
Subclass:
477.9
Specific backing member for flexible wall:
This subclass is indented under subclass 477.1. Apparatus
wherein the significance is attributed to a particular shape
or position or material of the backing member for the
flexible wall. [figure]
Subclass:
478
This subclass is indented under subclass 437. Apparatus
comprising an elongated hollow member having walls thereof
formed of flexible material, said member having an inlet
valve at one end thereof for controlling flow of fluid into
said member and an outlet valve at the opposite end thereof
for controlling the flow of fluid out of the member.
Subclass:
479
This subclass is indented under subclass 437. Apparatus in
which the movable wall portion of said chamber is formed of
flexible material and in which the means for controlling
pumped fluid into or out of said chamber is formed in part
(e.g., movable distributor portion or seat therefor) by an
integral portion of said flexible material.
Subclass:
480
This subclass is indented under subclass 437. Apparatus in
which a wall portion of the expansible chamber is fabricated
of flexible material or rigid members hinged or interfitted
together so that the members are movable relative to each
other, the flexing of the material or the relative movement
of the members constituting the movement which expands and
contracts the chamber and the means for controlling flow into
or out of said chamber being located on or supported by said
wall portion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
472 for bellows-type pumping members which may have valve
means supported on a movable portion thereof.
Subclass:
481
This subclass is indented under subclass 437. Apparatus in
which the wall portion is a rigid member and moves to-and-fro
in an arcuate path of less than 360 deg..
Subclass:
482
This subclass is indented under subclass 481. Apparatus in
which the means for controlling the inlet of fluid into the
chamber comprises a distributor positioned in a stationary
wall of the chamber which lies in the path of travel of the
pumping member at the end of the stroke thereof.
Subclass:
483
This subclass is indented under subclass 482. Apparatus
including means for controlling the discharge of fluid from
the chamber, said means comprising a distributor positioned
in the pumping member.
Subclass:
484
This subclass is indented under subclass 481. Apparatus in
which the means for controlling the inlet of fluid into the
chamber or exhaust of fluid from the chamber comprises a
distributor positioned in the pumping member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
483 for a discharge distributor in an oscillating pumping
member combined with an inlet distributor in an abutment wall
for the pumping member.
Subclass:
485
This subclass is indented under subclass 437. Apparatus
comprising a single pump chamber having a reciprocating
pumping member therein and a plurality discharge outlets
communicating therewith, and control means for successively
establishing communication with said plural outlets upon
successive discharge strokes of said pumping member.
Subclass:
486
This subclass is indented under subclass 437. Apparatus in
which a single pump chamber includes two or more pumping
members.
(1) Note. The plural pumping members may act upon the pump
fluid within the single chamber either simultaneously,
successively, or selectively.
(2) Note. For purposes of this definition, the pump chamber
is construed as including only that chamber volume formed
downstream of valve means controlling inlet of pump fluid to
the chamber and upstream of valve means controlling discharge
pump fluid from the chamber.
(3) Note. The plural pumping members under this definition
may be laterally spaced, coaxial, or concentric and each must
be disclosed as positively driven to act upon fluid within
the pump chamber. However, in the case of concentric pumping
members, the pumping faces thereof must be either axially
spaced or relatively movable, e.g., a pumping member having a
sealing ring or separable drive rod portion forming a portion
of the pumping face is considered to be a single pumping
member and is excluded under this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
215 for plural pumping members in a single chamber with
condition responsive control of a drive transmission to
change the phase relationship of the pumping members.
SEE OR SEARCH CLASS:
92, Expansible Chamber Devices, subclass 6 for a working
member having a selectively variable end face area, and
subclasses 60+ for a resiliently biased nonworking member
movable wall in constant communication with a working
chamber.
Subclass:
487
This subclass is indented under subclass 486. Apparatus
having at least two pumping members within said single
chamber which are adapted for to-and-fro movement upon a
common longitudinal axis.
Subclass:
488
This subclass is indented under subclass 487. Apparatus in
which the pumping members form opposing walls of said
chamber.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, subclass 501 for three
or more cylinders arranged in parallel, radial or conical
relationship with a rotary transmission axis with oppositely
moving pistons in each cylinder.
92, Expansible Chamber Devices, 69 for an expansible chamber
device having relatively movable working members
interconnected with a common rotatable shaft and forming
oppositely movable walls of a common chamber, and subclass
75, for working members forming oppositely movable walls of a
common chamber.
Subclass:
489
This subclass is indented under subclass 437. Apparatus in
which the expansible chamber pump comprises a cylinder having
a relatively movable piston therein, admission or discharge
of pumped fluid to or from the expansible chamber occurring
as the result of the piston being either (1) tipped or canted
relative to the cylinder to provide a fluid flow passage
between adjacent cylinder and piston sidewall portions or (2)
withdrawn or extracted from the cylinder so as to provide
open communication between the cylinder interior and the
surrounding medium.
SEE OR SEARCH THIS CLASS, SUBCLASS:
320 for apparatus having a pumping member which moves
unidirectionally into and out of a chamber to form serial
pumping chambers.
Subclass:
490
This subclass is indented under subclass 437. Apparatus in
which the supply or discharge of pump fluid to or from the
pump chamber is by way of a port which is controlled by
opening or closing same upon movement (reciprocatory or
rotary) of the pumping member relative to the pump chamber;
said port being either (1) formed in a pump chamber wall
(e.g., cylinder) and opened or closed directly by the pumping
member (e.g., piston) or element integral with or movably
carried thereby or, (2) formed in the pumping member and
opened or closed directly by a pump chamber wall or element
integral with or movably carried thereby.
(1) Note. For purposes of this definition, an element which
is movably carried by the pumping member for controlling a
chamber wall port may be movable relative to the pumping
member but must move with the pumping member over at least a
portion of the stroke thereof, the element itself serving to
directly control a chamber wall port. However, a valve
element which is mounted in a chamber wall portion and which
is shifted by abutment or frictional engagement with pumping
member is not considered to be movably carried by the pumping
member and is excluded under this definition. See subclass
520.
SEE OR SEARCH THIS CLASS, SUBCLASS:
489 for a pump having an inlet or discharge path controlled
by withdrawal or tilting of the pump piston relative to the
cylinder therefor.
520 see (1) Note above.
Subclass:
491
This subclass is indented under subclass 490. Apparatus
comprising two or more pumping chambers and in which a single
unitary element forms the pumping members for said chambers,
said element being effective to control the inlet of fluid
into or the discharge of fluid from the several chambers by
either (1) alternately covering and uncovering a port in a
wall of each of said chambers, or (2) alternately covering
and uncovering a single port which is common to and placed in
communication with each of said chambers at different
positions of the pumping member stroke.
(1) Note. For a definition of plural chambers see the
definition and notes of subclass 521.
Subclass:
492
This subclass is indented under subclass 491. Apparatus in
which the pumping member rotates about its longitudinal axis
to effect the covering and uncovering of said port.
Subclass:
493
This subclass is indented under subclass 490. Apparatus
comprising a single pump chamber having either (1) an inlet
flow path for pump fluid and at least two outlet flow path
which are different from each other and from said inlet flow
path or (2) an outlet flow path for pump fluid and at least
two inlet flow paths which are different from each other and
from said outlet flow path; each of said two flow paths being
cyclically controlled (i.e., controlled each time during a
single pumping member movement cycle) at different times in
the pump cycle and at least one of said two paths being
controlled by a pumping member controlled part.
(1) Note. The plural inlet or outlet flow paths may be
supplied from the same or different sources or deliver to the
same or separate destinations. Therefore, a bypass of pump
fluid to waste or back to supply or a vent to atmosphere is
considered to be a flow path under this definition.
(2) Note. A passage to which pumped fluid is delivered or
from which fluid is drawn into the pump is not considered to
be an inlet or outlet under this definition if the fluid is
delivered to or drawn from a portion of the pump assembly and
is utilized for an ancillary purpose of the pump such as
cooling or lubricating a pump part.
(3) Note. The flow paths are considered to be different
under this definition if the pump fluid flows through one
path at one time and flows through the same path and
additionally through another path at another time.
SEE OR SEARCH THIS CLASS, SUBCLASS:
485 for a plurality of pumping member controlled outlet
ports which sequentially discharge fluid on successive
strokes of the pumping member.
Subclass:
494
This subclass is indented under subclass 493. Apparatus
including means which may be selectively moved and held in
different positions to effect control of said pumping member
controlled port at different times in the pumping member
stroke.
Subclass:
495
This subclass is indented under subclass 493. Apparatus
including a piston type pumping member provided with a fluid
passage extending from the end face thereof through the
opposite end of the piston or through a side wall portion
thereof, said passage being provided with a relatively
movable valve means to control the flow of fluid through said
passage.
Subclass:
496
This subclass is indented under subclass 490. Apparatus in
which in addition to the control of pump fluid by a pumping
member controlled port there is a separate means to control
the pump fluid in either the inlet or outlet flow path for
the pump; i.e., the pump fluid is serially controlled by both
means either going to or coming from the pump chamber.
(1) Note. The separate means may be a second pumping member
controlled port. The disclosed use of many of the devices in
this subclass is that the pumping member closes and seals an
inlet or discharge port when idle to prevent leakage.
Subclass:
497
This subclass is indented under subclass 490. Apparatus in
which the port through which pump fluid flows to or from the
pump chamber is formed in an end wall of the pump chamber
(i.e., that portion of the pump chamber not traversed by the
pumping member), the pumping member or element carried
thereby being effective to intermittently obstruct fluid flow
through said port by alternately entering into and exiting
from or abuttingly seating on same.
Subclass:
498
This subclass is indented under subclass 490. Apparatus
comprising one port for providing inlet of pump fluid to the
pump chamber and another port for providing discharge of pump
fluid therefrom, each of said ports being formed in a pump
chamber sidewall portion and longitudinally spaced from each
other, said ports individually providing the sole path for
inlet and discharge of pump fluid and being controlled by the
covering or uncovering thereof by the pumping member or
element carried thereby.
Subclass:
499
This subclass is indented under subclass 490. Apparatus
including means which may be selectively moved and held in
different positions to effect opening or closing of such port
at different positions of pumping member stroke.
SEE OR SEARCH THIS CLASS, SUBCLASS:
494 for a pump chamber having plural controlled inlet or
outlet flow paths, control of one of said paths being
effected by a pumping member controlled port which has means
associated therewith for effecting the control thereof at
different positions of pumping member stroke.
Subclass:
500
This subclass is indented under subclass 490. Apparatus in
which the working member rotates about its longitudinal axis
during reciprocation thereof to effect the covering and
uncovering of said port.
SEE OR SEARCH THIS CLASS, SUBCLASS:
492 for an inlet or exhaust control for plural chambers
comprising a common working member movable about an axis.
Subclass:
501
This subclass is indented under subclass 490. Apparatus
including a distributor positioned in facing relationship
with the pumping member end face, the area of the movable
portion of the distributor or the movable portion of the
valve which seats on the nonmovable portion of the valve
being substantially the same as the area of the pumping
member end face.
Subclass:
502
This subclass is indented under subclass 437. Apparatus
comprising a single pump chamber having a plurality of outlet
passages for pumped fluid, each of said outlet passages being
individually, cyclically controlled and either (1) delivering
to separate destinations, or (2) if delivering to a common
destination, the control means having different modes of
operation or operating at different times in the pump cycle.
(1) Note. For purposes of this definition, cyclic control
of the outlet passages is not limited to control which is
effected during each stroke of a reciprocating pumping member
and includes control which is effected after a predetermined
number of strokes of the pumping member.
(2) Note. A bypass of pumped fluid back to supply or to
waste is considered to be an outlet under this definition
including those in which the bypass is downstream of the
cyclic outlet from the pump chamber. However, a passage
through which pumped fluid is delivered to a portion of the
pump assembly (e.g., bearing) and is utilized for an
ancillary purpose of the pump such as cooling or lubricating
of a pump such as cooling or lubricating of a pump part is
not considered to be an outlet under this definition.
(3) Note. A pump chamber having one outlet through a valve
in a piston operating therein and another outlet through a
valve not in the piston is intended to form subject matter
under this definition, said valves being considered as having
different modes of operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
251 for successive stage pumps having a pump fluid discharge
path intermediate of the pumping stages.
493 for plural controlled inlet or outlet flow paths, the
control of at least one of said paths being effected by a
pumping member controlled port.
Subclass:
503
This subclass is indented under subclass 437. Apparatus
comprising a single pump chamber having a plurality of inlet
passages for pump fluid, each of said inlet passages being
individually, cyclically controlled and either (1) supplied
from different sources or (2) if supplied from a common
source, the control means having different modes of operation
or operating at different times in the pump cycle.
(1) Note. For purposes of this definition, cyclic control
of the inlet passages is not limited to control which is
effected during each stroke of a reciprocating pumping member
and includes control which is effected after a predetermined
number of strokes of the pumping member.
(2) Note. A passage from which fluid is drawn from a
portion of the pump assembly (e.g., bearing) for enhancing
the function of said assembly portion (e.g., cooling,
sealing) is not considered to be an inlet under this
definition, this subject matter forming the basis of subclass
439.
(3) Note. A pump chamber having one inlet through a valve
in a piston operating therein and another inlet through a
valve not in the piston is intended to form subject matter
under this definition, said valve being considered as having
different modes of operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
242 for a cyclically controlled bypass between plural pump
chambers which is in addition to the normal inlet flow paths
to the chamber.
250 for successive stage pumps having a pump fluid inlet
intermediate of the pumping stages.
493 for plural controlled inlet or outlet flow paths, the
control of at least one of said flow paths being effected by
a pumping member controlled port.
Subclass:
504
This subclass is indented under subclass 437. Apparatus
including a plurality of outlet valves or a plurality of
different outlet flow paths controlled by a single valve
element for a single expansible chamber, said outlet valves
or flow paths discharging to a common outlet line and being
designed to open in response to different conditions in the
expansible chamber.
(1) Note. Ordinarily one of the valves is a distributor and
another is one which opens only in response to excess
pressure, e.g., when a slug of water accumulates in an air
compressor. The distributor may be pressure responsive or
mechanically actuated. In a mechanically actuated
distributor the condition is the position of the pumping
member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
307 for a pressure operated relief or bypass which vents
fluid to waste or back to supply.
502 for an expansible chamber having multiple outlets which
are each cyclically operated and operate under different
conditions or discharge to different lines.
Subclass:
505
This subclass is indented under subclass 437. Apparatus in
which the means for controlling the flow of fluid into or out
of the chamber comprises valve means which is actuated by an
electric current or a magnetic field.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, subclass 275 for a
cyclically operable expansible chamber-type motor having an
electrically or magnetically actuated distributor.
Subclass:
506
This subclass is indented under subclass 437. Apparatus in
which the control means comprises a distributor, and in which
the extent or movement of said distributor toward open or
closed position or the relation of the movement of the valve
with respect to the pumping member may be varied by means
which may be selectively moved and held in different
positions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
297 for condition responsive means to vary the operation of
a distributor for an expansible chamber pump.
427 for a plurality of pumps including means to adjust the
distributor movement of one or more of the pumps.
524 for separate means to bias a pressure responsive
distributor to open position.
Subclass:
507
This subclass is indented under subclass 437. Apparatus in
which the means to control the flow of fluid into or out of
the chamber comprises a distributor, said distributor being
at least partially moved cyclically by a fluid reactive
surface formed on the distributor, or formed on an element
adapted to contact the distributor means.
(1) Note. The reactive surface excludes the areas of the
distributor means which are subjected to pump pressures as
the working fluid is moved to and from the working chamber.
Subclass:
508
This subclass is indented under subclass 507. Apparatus in
which in addition to the fluid reactive surface for moving
the distributor there is also provided means to move said
distributor which is interconnected with or abutted by the
pumping member or a drive transmission element associated
therewith in a manner which causes the distributor to be
mechanically shifted upon movement of the pumping member or
transmission element through a pumping operation cycle.
Subclass:
509
This subclass is indented under subclass 437. Apparatus in
which a part of the pump chamber wall which is traversed by
the pumping member is movable and forms or carries a part
forming a portion of a distributor which controls inlet or
discharge of pump fluid to or from the pump chamber.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, subclass 276, and see
the search notes therein, for cyclically operable expansible
chamber motors in which the valve means is formed by a
movable portion of the working chamber wall traversed by the
working member.
Subclass:
510
This subclass is indented under subclass 437. Apparatus in
which the means for controlling flow of pump fluid into or
out of the pump chamber comprises a distributor which is
interconnected with or adapted to be abutted by the pumping
member or a drive transmission element associated therewith
in a manner which causes said distributor to be mechanically
shifted upon movement of the pumping member or transmission
element through a pumping operation cycle.
(1) Note. A moving cylinder having a port which cooperates
with a stationary member for controlling the flow of pump
fluid to or from the pump chamber is not considered to be a
mechanically actuated distributor under this definition, such
subject matter being classified in subclasses 460+, above.
SEE OR SEARCH THIS CLASS, SUBCLASS:
443 for means for actuating a pressure responsive
distributor to an open position responsive to pumping member
position.
456 for an expansible chamber pump having relatively movable
serial distributors in which one of said distributors is of
the mechanically actuated type.
460 for a moving cylinder which cooperates with a stationary
member for controlling inlet and discharge of pump fluid to
or from the pump chamber, and see (1) Note, above.
490 for an inlet or discharge port formed in a pumping
member or chamber wall which is controlled by an element
carried by the other.
508 for a distributor which is moved by a separate fluid
reactive surface as well as a mechanical means.
509 for a distributor which is formed in part by a traversed
chamber wall portion, the wall portion usually being moved by
interconnection or frictional engagement with the pumping
member.
Subclass:
511
This subclass is indented under subclass 510. Apparatus in
which the valve element is carried on or within the piston
for axial movement relative thereto and either (1) the piston
is in frictional contact with a pump chamber wall portion and
is driven by a power transmission element which is rigidly
connected to the valve element or (2) the valve element is in
frictional contact with a pump chamber wall portion and the
piston is driven by a transmission element rigidly connected
thereto.
Subclass:
512
This subclass is indented under subclass 511. Apparatus in
which the valve element comprises a single unitarily movable
member which controls either the inlet to or discharge from
two or more pump chambers.
Subclass:
513
This subclass is indented under subclass 511. Apparatus in
which the valve element and piston have conical or
frustoconical seating engagement to perform the valving
function.
Subclass:
514
This subclass is indented under subclass 510. Apparatus in
which the pumping member comprises a piston, said piston or
an element rigid therewith (e.g., piston rod) having a pump
fluid connecting passage formed therein, the mechanically
actuated valve element being located within or carried by the
piston and positioned in flow controlling relationship with
said piston passage for performing the valving function.
SEE OR SEARCH THIS CLASS, SUBCLASS:
511 for a distributor carried by a piston in which either
the distributor or piston frictionally engages a chamber wall
and the pump drive rod is rigid with the other.
Subclass:
515
This subclass is indented under subclass 510. Apparatus
comprising two or more pumping chambers.
(1) Note. A device in which fluid is moved from one side of
a pumping member to the opposite side thereof during movement
of the pumping member in one direction of its stroke and then
lifted out of the chamber during movement of the pumping
member in the second direction of its stroke is not
considered plural chambers and is excluded from this
subclass.
(2) Note. A pump including a plurality of pumping members
acting upon a body of fluid, and in which the fluid acted
upon by a first pumping member is in communication with the
fluid acted upon by a second pumping member in all operative
conditions of the pump, is not considered as constituting
plural chambers and is excluded from this subclass. Such
subject matter is classified below on other features.
Subclass:
516
This subclass is indented under subclass 515. Apparatus in
which the valve element comprises a single unitarily movable
member which controls either (1) the inlet of pump fluid to
two or more pump chambers or (2) the discharge or pump fluid
from two or more pump chambers.
SEE OR SEARCH THIS CLASS, SUBCLASS:
512 for a single mechanically actuated distributor element
which is located within or carried by a pump piston which
controls pump fluid inlet to or discharge from plural pump
chambers.
Subclass:
517
This subclass is indented under subclass 516. Apparatus in
which the unitarily movable valve element controls both the
inlet and discharge of pump fluid to and from two or more
pump chambers.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, 472 for pumps or
motors comprising three or more cylinders arranged in
parallel, radial, or conical relationship with a rotary
transmission axis and in which motive or pump fluid flow is
usually controlled by a single, unitary, mechanically
actuated valve element. For the line between Class 91 and
Class 417 concerning this type of pump, see the note in Class
417 subclass 269.
Subclass:
518
This subclass is indented under subclass 510. Apparatus in
which the inlet and discharge valves comprise a single
unitary element.
SEE OR SEARCH THIS CLASS, SUBCLASS:
517 for a unitary inlet and discharge distributor for plural
pumping chambers.
Subclass:
519
This subclass is indented under subclass 518. Apparatus in
which the element partakes of a movement about an axis to
effect control of the pump fluid.
Subclass:
520
This subclass is indented under subclass 510. Apparatus in
which a portion of the valve element or a member connected
thereto is either (1) frictionally connected with the pumping
member or (2) is located in the path of pumping member
movement and adapted to be moved by contact therewith at some
portion of the pumping member stroke.
SEE OR SEARCH THIS CLASS, SUBCLASS:
443 for means for actuating a pressure responsive
distributor to an open position responsive to pumping member
position.
490 for an inlet or discharge port formed in a pumping
member or chamber wall which is controlled by an element
carried by the other.
Subclass:
521
This subclass is indented under subclass 437. Apparatus
comprising two or more pumping chambers.
(1) Note. A device in which fluid is moved from one side of
a pumping member to the opposite side thereof during movement
of the pumping member in one direction of its stroke and then
lifted out of the chamber during movement of the pumping
member in the second direction of its stroke is not
considered plural chambers and is excluded from this
subclass.
(2) Note. A pump including a plurality of pumping members
acting upon a body of fluid, and in which the fluid acted
upon by a first pumping member is in communication with the
fluid acted upon by a second pumping member in all operative
conditions of the pump, is not considered as constituting
plural chambers and is excluded from this subclass. Such
subject matter is classified below on other features.
SEE OR SEARCH THIS CLASS, SUBCLASS:
244 for a successive stage pump.
473 for plural bellows-type pumping chambers.
480 for a pump in which the fluid is moved from one side of
a flexible wall pumping member to the other through a valved
port in said flexible wall pumping member.
486 for plural pumping members in one chamber having a
single inlet or discharge distributor.
491 for plural pumping chambers in which the inlet or
exhaust to each chamber is controlled by a pumping member
which is common to all pumping chambers.
515 for plural pumping chambers in which the inlet or
discharge valve for the chambers is mechanically actuated.
545 for a pump in which fluid is moved from one side of a
pumping member to the other through a valved port in the
pumping member.
555.1 for fluid serially moved to opposite sides of a common
pumping member.
Subclass:
522
This subclass is indented under subclass 521. Apparatus in
which a conduit for the discharge of fluid from a first
chamber is in direct communication with a nonpumping chamber
containing a portion of the second pumping member other than
the pumping face of said pumping member, said nonpumping
chamber not constituting the inlet or outlet flow path for
pump fluid to or from the pumping chamber containing the
second pumping member so that the fluid discharged from said
first chamber contacts such pumping member portion.
Subclass:
523
This subclass is indented under subclass 521. Apparatus in
which at least one of the chambers is defined in part by a
piston, said piston or element rigid therewith (e.g., piston
rod) having a pump fluid conducting passage formed therein
and the means for controlling fluid flow into or out of the
chamber including a movable valve member in flow controlling
relationship with said passage, said valve member being
located within or carried by said piston or element rigid
therewith.
(1) Note. For classification under this definition, the
expansible chamber pump must be provided with a pump fluid
conducting passage which is physically located within the
piston or element rigid therewith. A pump having relatively
movable piston portions for controlling flow from one side of
the piston to the other via a flow path formed between the
piston and a cylinder sidewall (i.e., pump fluid flows around
the piston) is excluded under this definition; see subclasses
555.1+, below, and the search note therein to Class 92 for
such subject matter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
545 for valved piston-type pumps not involving plural
pumping chambers and see the search notes thereto for valved
pistons elsewhere classified.
Subclass:
524
This subclass is indented under subclass 523. Apparatus in
which said valve means in the pumping members comprises
either (1) a single rigid unitarily movable valve member
which moves from one position to another to alternately
control the inlet to or discharge from said two or more
chambers or (2) relatively movable inlet or discharge valve
members which are mechanically interrelated in a manner such
that movement of an inlet or discharge valve member for one
pump chamber necessitates movement of an inlet or discharge
valve member, respectively, for another pump chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
512 for a single mechanically actuated distributor element
located within or carried by a pump piston which controls
pump fluid inlet to or discharge from plural pump chambers.
Subclass:
525
This subclass is indented under subclass 523. Apparatus in
which a first pumping chamber extends in a direction axially
of a second pumping chamber, the piston for said first and
second pumping chambers comprising a rigid unitary element,
said element having valves thereon for controlling fluid to
or from each of said chambers.
SEE OR SEARCH THIS CLASS, SUBCLASS:
524 for unitary or interconnected inlet or discharge
distributors in a common piston for plural pumping chambers.
Subclass:
526
This subclass is indented under subclass 525. Apparatus in
which there is a single inlet or discharge conduit common to
the plural chambers said conduit being mounted on and movable
with the piston.
Subclass:
527
This subclass is indented under subclass 525. Apparatus in
which the inlet or discharge conduit for the first pumping
chamber extends axially through a portion of the second
pumping chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
526 for a common pumping member having valves for aligned
pumping chambers and a conduit which forms a common inlet or
discharge for the chambers mounted on the pumping member and
extending through at least one of the chambers.
Subclass:
528
This subclass is indented under subclass 523. Apparatus in
which the chambers are positioned in axial alignment and a
conduit for conducting fluid to or from a first pumping
chamber extends axially through a portion of a second pumping
chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
526 and 527, for axially aligned pumping chambers and a
common pumping member having valves for both chambers and a
pump fluid conduit extending through one of the chambers.
Subclass:
529
This subclass is indented under subclass 523. Apparatus
comprising two or more pistons which are capable of or
constrained to move relative to each other, the longitudinal
axis of one of said pistons being spaced from and parallel to
the longitudinal axis of another of said pistons, said
pistons being positioned in separate pumping chambers.
Subclass:
530
This subclass is indented under subclass 523. Apparatus in
which the piston of at least one of the chambers is
imperforate.
Subclass:
531
This subclass is indented under subclass 521. Apparatus in
which the means for controlling pump fluid flow into or out
of two or more chambers comprises either (1) a single rigid
unitarily movable valve member which moves from one position
to another to alternately control the inlet to or discharge
from said two or more chambers or (2) relatively movable
inlet or discharge valve members which are mechanically
interrelated in a manner such that movement of an inlet or
discharge valve member for one pump chamber necessitates
movement of an inlet or discharge valve member, respectively,
for another pump chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
491 for plural pumping chambers having a common pumping
member, said pumping member controlling the inlet or
discharge port of two or more of said chambers.
512 for a single mechanically-actuated distributor element
located within or carried by a pump piston which controls
pump fluid inlet to or discharge from plural pump chambers.
516 for a single mechanically-actuated distributor element
which controls pump fluid inlet to or discharge from plural
pump chambers.
524 for plural pumping chambers including a valved piston
and in which a common element forms an inlet or discharge
valve for two or more chambers.
SEE OR SEARCH CLASS:
91, Motors: Expansible Chamber Type, 178 for an expansible
chamber-type motor having a single valve unit controlling
plural working chambers.
Subclass:
532
This subclass is indented under subclass 531. Apparatus in
which the means for controlling pump fluid flow into or out
of said two or more chambers comprises a single valve member
which moves as a unit about an axis.
Subclass:
533
This subclass is indented under subclass 521. Apparatus in
which two or more pumping chambers are positioned in spaced
parallel relationship including a conduit positioned between
said pumping chambers and at least partially lying within the
axial limits of the pumping chambers, said conduit being in
communication with the controlled discharge of each of said
pumping chambers, so that each of said pumping chambers
discharge into and through said conduit.
SEE OR SEARCH THIS CLASS, SUBCLASS:
539 for other pumps having laterally spaced parallel pumping
chambers.
Subclass:
534
This subclass is indented under subclass 521. Apparatus in
which the plural pumping chambers are formed at opposite ends
of a common pumping member which moves to-and-fro along a
straight line (includes diaphragm), movement of said pumping
member effecting expansion of one of said pumping chambers
and simultaneous contraction of the other.
(1) Note. Plural pumping chambers formed in separate
cylinders are included under this definition if the cylinders
are coaxial and contain pumping members which are rigidly
interconnected.
SEE OR SEARCH THIS CLASS, SUBCLASS:
404 for a double acting pump piston driven by a rigidly
attached double acting reciprocating fluid motor.
418 for a double acting pump piston driven by a rigidly
attached reciprocating electric motor.
491 for a common pumping member for plural pumping chambers
in which the pumping member controls an inlet or discharge
port for the chamber.
525 for a common pumping member for plural aligned chambers
wherein the pumping member includes valves for controlling
pump fluid to or from the chambers.
528 for plural pumping chambers wherein a fluid conduit for
one of the chambers extends through a portion of another.
Subclass:
535
This subclass is indented under subclass 534. Apparatus in
which there is provided inlet discharge valve means for
controlling flow of pump fluid to and from the chambers, the
discharge valves for the several chambers being located at a
position radially spaced from the path of movement of the
pumping member.
Subclass:
536
This subclass is indented under subclass 535. Apparatus in
which the inlet and discharge valves for the several chambers
are located at a position radially spaced from the path of
movement of the pumping member.
Subclass:
537
This subclass is indented under subclass 536. Apparatus in
which all the valves are positioned on one side of a plane
parallel to and extending through the axis of the working
member.
Subclass:
538
This subclass is indented under subclass 521. Apparatus in
which said pumping chambers are coaxial with each other with
one end of one chamber secured to the end of a second
chamber, and in which the valve means for controlling the
inlet and discharge of said chambers is positioned adjacent
the secured ends of said pumping chambers.
Subclass:
539
This subclass is indented under subclass 521. Apparatus
comprising two or more pumping members which are capable of
or constrained to move relative to each other, the
longitudinal axis of one of said pumping members being spaced
from and parallel to the longitudinal axis of another of said
pumping members.
SEE OR SEARCH THIS CLASS, SUBCLASS:
269 for three or more pump cylinders arranged in parallel
relationship with a rotary transmission axis.
529 for parallel laterally spaced valved pumping members.
533 for spaced parallel pumping chambers having a common
discharge conduit or chamber spaced therebetween in which the
pumping members may have relative motion.
Subclass:
540
This subclass is indented under subclass 437. Apparatus
comprising a fluid receiving or confining means positioned in
open communication with the pump fluid either upstream of the
means to control the flow of fluid into the chamber or
downstream of the means to control the flow of fluid from the
chamber to absorb pulsations initiated in said fluid incident
to an operation of the pump.
SEE OR SEARCH CLASS:
138, Pipes and Tubular Conduits, 26 for pressure
compensators, per se.
Subclass:
541
This subclass is indented under subclass 540. Apparatus in
which the fluid confining means is fixed to the pumping
member for movement therewith.
Subclass:
542
This subclass is indented under subclass 540. Apparatus in
which a fluid receiving or confining means is provided both
upstream of the means to control the flow of fluid into the
chamber and downstream of the means to control the flow of
fluid from the chamber.
Subclass:
543
This subclass is indented under subclass 540. Apparatus in
which said means comprises an enclosed space having a
compressible fluid confined therein, said compressible fluid
being in direct contact with the portion of the pump fluid
entering said space.
SEE OR SEARCH THIS CLASS, SUBCLASS:
541 for a confined compressible fluid dampening chamber
carried by the pumping member.
542 for combined inlet and discharge pulsation dampening
chambers of the confined compressible fluid type.
SEE OR SEARCH CLASS:
137, Fluid Handling, subclass 207 for a surge suppressor of
the type comprising a gas stored over a body of liquid.
Subclass:
544
This subclass is indented under subclass 543. Apparatus in
which the space having confined compressible fluid is
associated with a pump of the type which is manually
operated, e.g., by a handle or treadle.
Subclass:
545
This subclass is indented under subclass 437. Apparatus in
which the pumping chamber is defined in part by a piston,
said piston or element rigid therewith (e.g., piston rod)
having a pump fluid conducting passage formed therein and the
means for controlling fluid flow into or out of the chamber
includes a movable valve member in flow controlling
relationship with said passage, said valve member being
located within or carried by said piston or element rigid
therewith.
(1) Note. For classification under this definition, the
expansible chamber pump must be provided with a pump fluid
conducting passage which is physically located within the
piston or element rigid therewith. A pump having relatively
movable piston portions for controlling flow from one side of
the piston to the other via a flow path formed between the
piston and a cylinder sidewall (i.e., pump fluid flows around
the piston) is excluded under this definition; see subclasses
555.1+, below, and the search note therein to Class 92 for
such subject matter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
244 for successive stage pumps and particularly subclasses
259+ for those including a valved piston and see the notes in
subclass 244 for the distinction between these subclasses.
467 for a valved piston in which the valve is mechanically
actuated.
484 for a valved oscillating-type pumping member.
495 for a valved piston combined with pumping member
controlled inlet or discharge ports.
511 for a piston carried distributor in which either the
piston or distributor frictionally engages the pumping
chamber wall and the distributor or piston, respectively, is
integral with the drive rod of the pump.
523 for a plural chamber pump having a valved pumping
member.
Subclass:
546
This subclass is indented under subclass 545. Apparatus in
which the piston is provided with relatively movable valve
members which control flow of fluid into and out of the
expansible chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
260 for successive stage pumps having a valved piston which
contains both the inlet and the outlet valve for one of the
stages.
486 for a pumping chamber having two or more relatively
fixed pumping members and in which the inlet valve is
positioned in one working member and the discharge valve is
positioned in a second pumping member.
525 for a common valved pumping member for plural pumping
chambers in which both the inlet and discharge valves for the
chambers are disposed in the pumping member.
Subclass:
547
This subclass is indented under subclass 545. Apparatus in
which a conduit for the pump fluid is rigidly fixed to the
valved piston.
(1) Note. A device of the type disclosed as a hollow piston
or plunger through which the pump fluid flows and in which
such fluid is discharged from said piston or plunger through
openings therein into a casing or space which slidably
receives such piston or plunger, and in which an end face of
said piston or plunger further acts upon said fluid to move
the same from said casing or space, is excluded from this
subclass. Such device is classified below on other features.
However, when the piston is also provided with a fluid
conduit fixed thereto and the fluid is discharged by the said
end face into the conduit for ultimate discharge, said device
is included under this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
528 for a plural chamber pump provided with a valved pumping
member having a fluid conduit secured thereto, said conduit
extending through a portion of one chamber and conducting
fluid to or from a second chamber.
Subclass:
548
This subclass is indented under subclass 545. Apparatus in
which the valved piston is slidable within a tube (e.g.,
cylinder) and has rigidly attached thereto a wall member
which is in sealing engagement with said tube or another tube
aligned and in open communication therewith, said wall member
having a face portion in contact with the pumped fluid
downstream of the valved piston and said first tube being
provided with a discharge for pumped fluid positioned between
said valved piston and wall member.
(1) Note. The discharge may be an annular passage
surrounding the first or second tube.
Subclass:
549
This subclass is indented under subclass 545. Apparatus
including means separate from the valve element and
engageable therewith to continuously exert a force thereon in
a direction toward its seat.
SEE OR SEARCH THIS CLASS, SUBCLASS:
507 for a distributor which is moved by a separate fluid
responsive element.
Subclass:
550
This subclass is indented under subclass 545. Apparatus in
which the valve or part thereof (e.g., hinge) is formed of
flexible material and in which opening and closing of said
valve is effected by the flexing of said material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
479 for a flexible wall-type pumping member in which a
portion of said flexible wall forms a pump fluid valve.
Subclass:
551
This subclass is indented under subclass 545. Apparatus in
which the valve comprises a rigid member which is
mechanically interconnected with the piston in a manner which
constrains said member for movement about an axis.
(1) Note. A movable rigid valve member which is connected
to the piston by means of a flexible element (e.g., resilient
material hinge) which flexes upon movement of the valve to
constrain movement of the valve member about an axis is not
classified under this definition, such subject matter being
provided for in subclass 550, above.
Subclass:
552
This subclass is indented under subclass 545. Apparatus in
which the valve comprises a member movable in a to-and-fro
motion toward and away from its seat.
SEE OR SEARCH CLASS:
137, Fluid Handling, 528 for a reciprocating direct
responsive valve.
Subclass:
553
This subclass is indented under subclass 552. Apparatus in
which the valve comprises a ring like member.
Subclass:
554
This subclass is indented under subclass 552. Apparatus in
which the valve comprises a member in the shape of a ball or
sphere.
SEE OR SEARCH CLASS:
137, Fluid Handling, 533.11 for a ball-type reciprocating
direct responsive valve.
Subclass:
555.1
Fluid serially moved to opposite side of pumping member:
This subclass is indented under subclass 437. Apparatus
having a reciprocating pumping member and in which fluid is
moved from one side of the pumping member to the opposite
side thereof during one reciprocatory stroke direction and
then moved in the direction of movement of the pumping member
during the other reciprocatory stroke direction.
(1) Note. A piston having a cup shaped axially extending
peripheral lip portion fabricated of flexible material and in
direct contact with pump fluid which is radially movable
relative to a cylinder sidewall responsive to pump chamber
pressure to control fluid flow around the piston is not
considered in itself to be a valve and, per se, does not form
subject matter under this definition. However, such devices
when claimed in combination with a valve for controlling
fluid flow into or out of the pump chamber form subject
matter under this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
254 for a successive stage pump comprising pumping chambers
on opposite sides of a pumping member in which the fluid is
serially pumped from one pumping chamber to the next.
545 for a pump in which fluid is serially moved to opposite
sides of a valved piston.
SEE OR SEARCH CLASS:
92, Expansible Chamber Devices, 240 for a piston having a
sidewall portion including a peripheral axially extending
flexible lip which may be disclosed as performing a valving
function and see the search notes therein.
Subclass:
555.2
Well swabs:
This subclass is indented under subclass 555.1. Apparatus
wherein the reciprocating pumping member is located in a well
and used to force fluid from the pumping chamber.
Subclass:
556
This subclass is indented under subclass 555.1. Apparatus in
which the pumping member comprises a piston formed of plural
relatively movable rigid side wall forming segments, said
segments being movable to a first relative position during
movement of the piston in one reciprocatory stroke direction
to prevent fluid flow from one end of the piston to the other
and movable to a second relative position during movement of
the piston in the other reciprocatory stroke direction to
permit such flow.
(1) Note. For classification under this definition, the
relatively movable piston side wall segments must be
fabricated of rigid material and be relatively movable in a
manner to control fluid flow either between the segments and
a cylinder side wall or between relatively engageable segment
portions. The rigid segments may include resilient portions
for sealing engagement with the cylinder side wall and such
will not serve to exclude the device from classification
under this definition provided that the relative movement of
the segments themselves serve to control fluid flow rather
than the mere flexing of a resilient piston portion
responsive to relative movement of the segment.
SEE OR SEARCH THIS CLASS, SUBCLASS:
59 for a radially expansible piston for controlling fluid
flow in a drilled well free piston-type pump.
489 for a single unitary piston forming element which is
tilted relative to a cylinder in which it reciprocates for
the purpose of controlling inlet or discharge of pump fluid.
SEE OR SEARCH CLASS:
92, Expansible Chamber Devices, subclass 247 for a pair of
axially spaced relatively movable rigid piston forming
members having a radially movable element interposed
therebetween wherein said radially movable element is either
(1) flexible, or (2) has no disclosed valving function.
Subclass:
557
This subclass is indented under subclass 437. Apparatus in
which the pumping chamber is always in communication with the
inlet or the discharge to or from said chamber during all
phases of operation of the pump.
(1) Note. For classification under this definition the pump
must be disclosed as of the type in which the inlet or
exhaust are never completely closed under any condition of
operation of the pump. However, the constantly open line may
be throttled so long as it is not completely closed.
(2) Note. The subject matter in this subclass usually
involves a restricted flow path either in the inlet or
exhaust conduit which permits unimpeded flow in one
direction, but restricts flow in a reverse direction.
Subclass:
558
This subclass is indented under subclass 437. Apparatus
having both a distributor to control inflow and a distributor
to control outflow of pumped fluid for said chamber, the
movable valving part of one of said distributors forming the
flow passage and seat for and carrying the movable valving
part of the other distributor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
504 for plural outlet valves for a single chamber in which
one of the valves controls a passage through the other.
SEE OR SEARCH CLASS:
137, Fluid Handling, subclass 512.2 for plural check valves
in which one valve carries the head and seat for another.
Subclass:
559
This subclass is indented under subclass 437. Apparatus in
which the means for controlling the flow of fluid into or the
discharge of fluid from the chamber comprises valve means,
said valve means being of the type which moves to open or
close position responsive to a pressure differential in the
pumping chamber and the inlet or discharge conduits.
SEE OR SEARCH THIS CLASS, SUBCLASS:
297 for condition responsive means for modifying the
operation of a cyclically operated valve (e.g., check
valve).
427 for plural pumps having distributors which are
individually adjusted.
447 for pumping chamber pressure responsive distributors
with separate means to bias same open.
458 for relatively movable serial pressure responsive
distributors.
479 for a distributor formed from an integral portion of a
flexible wall pumping member.
480 for a distributor in a flexible wall pumping member.
482 for an oscillating pumping member with an inlet
distributor in an abutment wall for the pumping member.
483 and 484, for an oscillating pumping member having a
distributor positioned therein.
486 for a single inlet or discharge distributor for a
chamber having plural pumping members.
496 for a chamber pressure responsive distributor in serial
relationship with a pumping member controlled port.
523 for plural pumping chambers including a valved pumping
member.
531 for plural pumping chambers with a common element which
forms an inlet or discharge distributor.
536 for plural pumping chambers at opposite ends of a
reciprocating pumping member with inlet and discharge
distributors positioned laterally of the pumping member
path.
538 for aligned pumping chambers with inlet and discharge
distributors at adjacent ends of the aligned chambers.
545 for valved pistons and see the search notes thereto for
other valved pistons.
SEE OR SEARCH CLASS:
137, Fluid Handling, 511 for direct response valves, per se,
and see subclasses 512+ for plural direct response valves.
The claiming of a direct response valve mounted in a cylinder
or cylinder head or the like does not preclude classification
in Class 137. Also the claiming of both an inlet and outlet
valve does not preclude classification in Class 137 if no
pumping member is claimed.
Subclass:
560
This subclass is indented under subclass 559. Apparatus in
which a single unitary movable valve member is so positioned
relative to the conduits communicating with the chamber inlet
and discharge as to form the sole means for controlling both
the inlet of pump fluid into the chamber and the discharge of
pump fluid from the chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
531 for a single element controlling both inlet and
discharge of pump fluid to and from plural pump chambers.
Subclass:
561
This subclass is indented under subclass 559. Apparatus in
which means are provided to prevent movement of said valve
means, said means being effective in response to the pumping
member attaining a given position in the chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
446 for selectively operable means for holding pressure
responsive distributor open.
Subclass:
562
This subclass is indented under subclass 559. Apparatus in
which a portion of the valve means or valve supporting means
extends into the pumping chamber from a fixed wall thereof
and in which a wall of the pumping member is provided with a
groove, recess or indentation for receiving said valve means
or valve supporting means during movement of the pumping
member in the normal operation thereof in the pumping
chamber.
Subclass:
563
This subclass is indented under subclass 559. Apparatus
comprising an inlet valve and a discharge valve of
substantially the same shape and having substantially the
same mode of operation, a first said valve being either
greater in some dimension than said second valve or being
made of a different material than said second valve.
Subclass:
564
This subclass is indented under subclass 563. Apparatus in
which said valves consist of ring-shaped members.
Subclass:
565
This subclass is indented under subclass 559. Apparatus
having a fluid inlet conduit and a fluid discharge conduit,
said conduits being linearly aligned and a pivoted inlet and
discharge distributor being disposed in the aligned inlet and
discharge distributors, respectively.
(1) Note. The pivoting of the distributors may be
accomplished by a flexing of the material thereof.
SEE OR SEARCH THIS CLASS, SUBCLASS:
567 for nonpivoted inlet and discharge distributors seating
in coaxial ports.
Subclass:
566
This subclass is indented under subclass 559. Apparatus in
which the valve means is fabricated of nonmetallic material.
(1) Note. A mere sealing portion of a metallic valve (e.g.,
o-ring) which is fabricated of nonmetallic material is not
intended to be included under this definition. Generally,
for classification under this definition, the entire pump
fluid contacting portion of the movable valving member or
seat therefor must be formed of nonmetallic material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
479 for a valve formed from an integral portion of a
flexible wall pumping member.
550 for a valve piston having a valve formed of flexible
material.
Subclass:
567
This subclass is indented under subclass 559. Apparatus
comprising an inlet and discharge valve positioned in an
inlet and discharge port, respectively, which form seats for
said valves, the central axis of the inlet seat port
coinciding with the central axis of the discharge seat port.
(1) Note. Either or both of the ports may be annular so
long as the axes of the ports coincide.
SEE OR SEARCH THIS CLASS, SUBCLASS:
558 for inlet and discharge distributors in coaxial ports in
which the port (seat) for one is formed in the other; i.e.,
the one distributor is carried by and controls a passage in
the other.
Subclass:
568
This subclass is indented under subclass 567. Apparatus in
which said axis is perpendicular to the direction of movement
of the pumping member.
Subclass:
569
This subclass is indented under subclass 559. Apparatus in
which the inlet or discharge valve is positioned in a fixed
wall of the working chamber which is opposite the end face of
the pumping member when in operative position in the pumping
chamber.
SEE OR SEARCH THIS CLASS, SUBCLASS:
482 for an oscillating pumping member with a distributor in
an abutment wall for the pumping member.
Subclass:
570
This subclass is indented under subclass 569. Apparatus in
which the movable portion of the valve or the movable portion
of the valve which seats upon the nonmovable portion of the
valve is substantially the same area as the end face of the
pumping member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
501 for a coextensive distributor opposite a pumping member
end face combined with a pumping member controlled inlet or
discharge port.
Subclass:
571
This subclass is indented under subclass 569. Apparatus in
which an inlet valve and a discharge valve are positioned in
a wall opposite the end face of said pumping member.
Subclass:
572
This subclass is indented under the class definition.
Apparatus not otherwise provided for.
CROSS-REFERENCE ART COLLECTIONS
Subclass:
900
Pumps which are disclosed as pumping slurries; i.e., fluids
which contain suspended solids, such as concrete.
Subclass:
901
Pumps which are disclosed as pumping gases in the liquified
state at very low temperatures, e.g., liquid oxygen. This
collection is not intended to include refrigerant compressors
in which the refrigerant liquifies at a relatively high
temperature when placed under compression.
SEE OR SEARCH CLASS:
62, Refrigeration, 45.1 for stored solidified or liquified
gas handling.
Subclass:
902
Pumps comprising a motor driving the pump, the motor and pump
being disposed within a sealed casing such that no part of
the motor-pump unit projects through the casing so as to
require a running seal.
Subclass:
903
Pumps which are operated by a treadle adapted to be operated
by the foot or feet of a human or animal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
229 for pumps operated by a passing vehicle.
SEE OR SEARCH CLASS:
119, Animal Husbandry, subclass 76 for animal operated
watering pumps delivering to a watering trough.
Subclass:
904
WELL PUMP DRIVEN BY FLUID MOTOR MOUNTED ABOVE GROUND:
A collection of patents disclosing a pump installed below
ground to obtain subterranean fluids, and wherein the pump
member is operated by a motor located above the ground
surface, and the said motor has a reciprocating working
member which is motivated by a fluid.
Information Products Division -- Contacts
Questions regarding this report should be directed to:
U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231
tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov
Last Modified: 6 October 2000