U.S. patents subclasses for class: Pumps


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Title
MATERIALS DIGEST
Adjustable backing
Adjustable cam or linkage
Adjustable motor and pump rotor unit or relatively adjustable aligned pump and motor rotary shafts
Adjustable rollers or slides
Adjustable spring loaded valve
Adjustment with respect to common drive
Aerated column
Aligned
All discharge distributors positioned laterally of pumping member path
All distributors positioned on same side of pumping chamber
Alternate pumping from plural pumping chambers
ALTERNATE SERIES OR PARALLEL OPERATION OF PLURAL PUMPS
Alternating sequences
AMBULANT, BODY SUPPORTED, OR WITH CARRYING HANDLE
Annular
Annular motive fluid stream entrains pumped fluid outside and inside
Annular-type distributors
Armature within pumping member
Axial cam
Axial flow motor and centrifugal pump
Axial flow motor and pump
Axial inlet for pumped fluid
Axial thrust balancing means for rotary pump and motor
Ball type
Bellow-type sensor
Bellows-type chamber
Biased rollers or slides
Biasing means effects eduction stroke of abutment driven, pressure producing pumping member
Biasing means effects induction stroke of abutment driven, vacuum producing pumping member
Buoyant motor
BUOYANTLY SUPPORTED
By application of separate fluid
By bypassing motive fluid from nozzle
By changing electrical characteristic of motor or motor circuit
By changing phasing of plural pistons in single chamber
By condensation of motive fluid
By control of electric or magnetic drive motor
By controlling drive motor motive fluid
By controlling free piston internal combustion engine
By controlling internal combustion drive engine
By controlling motive fluid
By controlling starter motor for internal combustion engine
By controlling wind motor in response to liquid accumulation
By float
BY HEATING OF PUMPED FLUID
By ignition of motive fluid
By liquid pressure sensor
By movable conduit or conduit wall (e.g., combining tube)
By movable liquid receptacle

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