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 [Search a list of Patent Appplications for class 417]   CLASS 417,PUMPS
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SECTION I - 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.

SECTION II - 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.

SECTION III - SUBCLASS REFERENCES TO THE CURRENT CLASS

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.

SECTION IV - 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,   subclasses 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, subclasses 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 subclasses 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,   subclasses 150+ for high temperature (Tc 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

[List of Patents for class 417 subclass 1]    1CONDITION RESPONSIVE CONTROL OF PUMP DRIVE MOTOR
 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.
  
[List of Patents for class 417 subclass 2]    2Plural pumps having separate drive motors, supply sources, or delivery destinations
 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.
  
[List of Patents for class 417 subclass 3]    3Pumps in parallel flow paths with common inflow or outflow
 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.
  
[List of Patents for class 417 subclass 4]    4Having means sensing condition in common inflow or outflow line
 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.
  
[List of Patents for class 417 subclass 5]    5With control of plural pump drive motors
 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.
  
[List of Patents for class 417 subclass 6]    6With additional means sensing condition of one pump or path
 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.
  
[List of Patents for class 417 subclass 7]    7Sequential starting or stopping of pumps
 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.
  
[List of Patents for class 417 subclass 8]    8Alternating sequences
 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.
  
[List of Patents for class 417 subclass 9]    9By stopping pump in response to leakage into or from system
 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.
  
[List of Patents for class 417 subclass 10]    10By controlling starter motor for internal combustion engine
 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.
  
[List of Patents for class 417 subclass 11]    11By controlling free piston internal combustion engine
 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.
  
[List of Patents for class 417 subclass 12]    12Having timer or delay means
 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.
  
[List of Patents for class 417 subclass 13]    13Responsive to pump lubricant, sealant, or coolant condition
 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.
  
[List of Patents for class 417 subclass 14]    14Having ambient condition responsive means
 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.
  
[List of Patents for class 417 subclass 15]    15With control of pump drive transmission
 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).
  
[List of Patents for class 417 subclass 16]    16With plural separate drive motors for single pump unit
 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.
  
[List of Patents for class 417 subclass 17]    17With plural separate drive motor controlling elements
 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.
  
[List of Patents for class 417 subclass 18]    18Single motor control element responsive to means sensing diverse conditions
 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.
  
[List of Patents for class 417 subclass 19]    19Sensing both inlet and outlet conditions
 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.
  
[List of Patents for class 417 subclass 20]    20One condition is rate of flow to or from pump
 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.
  
[List of Patents for class 417 subclass 21]    21One is motive fluid condition of fluid drive motor
 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.
  
[List of Patents for class 417 subclass 22]    22One condition is speed of pump
 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.
  
[List of Patents for class 417 subclass 23]    23With common element sensing diverse condition to control motor and pump fluid valve
 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.
  
[List of Patents for class 417 subclass 24]    24Speed sensor comprises auxiliary pump or electric generator
 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.
  
[List of Patents for class 417 subclass 25]    25Relatively movable elements sensing same system pressure for single control element
 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.
  
[List of Patents for class 417 subclass 26]    26With condition responsive control of pump fluid valve
 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.

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10,for condition responsive control of pump fluid which is utilized as motive fluid for starting an internal combustion engine drive motor.
  
[List of Patents for class 417 subclass 27]    27Having independent means for delaying valve actuation
 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.
  
[List of Patents for class 417 subclass 28]    28Fluid and motor controls have common sensing element
 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.

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23,for a common condition sensing element which causes operation of both a pump drive motor control element and a pump fluid control valve.
  
[List of Patents for class 417 subclass 29]    29Fluid and motor controls separately responsive to diverse conditions
 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.

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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.
  
[List of Patents for class 417 subclass 30]    30Liquid accumulation controlled discharge valve downstream of motor controller sensing means
 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.
  
[List of Patents for class 417 subclass 31]    31Motor controller responsive to liquid pressure
 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.
  
[List of Patents for class 417 subclass 32]    32Responsive to pump or pump fluid temperature
 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.
  
[List of Patents for class 417 subclass 33]    33Pump stop control means requiring manual reset
 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.
  
[List of Patents for class 417 subclass 34]    34By controlling internal combustion drive engine
 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.

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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.
  
[List of Patents for class 417 subclass 35]    35By controlling wind motor in response to liquid accumulation
 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.
  
[List of Patents for class 417 subclass 36]    36Responsive to accumulation of pumped liquid in receiver
 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.

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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.
  
[List of Patents for class 417 subclass 37]    37By movable liquid receptacle
 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.
  
[List of Patents for class 417 subclass 38]    38By liquid pressure sensor
 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).
  
[List of Patents for class 417 subclass 39]    39With motive fluid supply communicating with liquid receiver
 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.
  
[List of Patents for class 417 subclass 40]    40By float
 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.
  
[List of Patents for class 417 subclass 41]    41Controlling motive fluid or drive motor
 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.
  
[List of Patents for class 417 subclass 42]    42In response to pump speed
 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.

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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.
  
[List of Patents for class 417 subclass 43]    43Responsive to change in rate of pump fluid flow
 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.
  
[List of Patents for class 417 subclass 44.1]    44.1By 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.
  
[List of Patents for class 417 subclass 44.11]    44.11Responsive 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.
  
[List of Patents for class 417 subclass 44.2]    44.2Responsive 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).
  
[List of Patents for class 417 subclass 44.3]    44.3Inlet pressure:
 This subclass is indented under subclass 44.2.  Apparatus wherein the sensing means is located at an inlet side of the pump.
  
[List of Patents for class 417 subclass 44.4]    44.4Low 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.
  
[List of Patents for class 417 subclass 44.5]    44.5Mercury 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.
  
[List of Patents for class 417 subclass 44.6]    44.6Dial-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.
  
[List of Patents for class 417 subclass 44.7]    44.7Bellow-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.
  
[List of Patents for class 417 subclass 44.8]    44.8Piston-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.
  
[List of Patents for class 417 subclass 44.9]    44.9Diaphragm:
 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.
  
[List of Patents for class 417 subclass 45]    45By changing electrical characteristic of motor or motor circuit
 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.