U.S. patents subclasses for class: Pumps


« previous  1 2 3 4 5 6 7 8 9 10 11 12  next »
Title
Controlling motive fluid or drive motor
CONVERTIBLE TO APPARATUS OF A DIFFERENT CLASS
Correlated motive fluid valve and pressure or vacuum generating means
CORRELATED PUMP AND MOTOR OR CLUTCH CONTROL
Correlated supply - exhaust of motive fluid or vacuum generating means
Crankcase forms stage or interstage flow path
CRYOGENIC PUMPS
Cyclic pumping
Cylinder and piston reciprocate on common axis
Cylinder oscillates about axis transverse to longitudinal axis
Cylinder rotates or oscillates about longitudinal axis
Deformation by rolling or sliding engagement member
Delivery to different ports on successive strokes
Dial-type sensor
Diaphragm
Diaphragm type
Direct contact with confined compressible fluid
Discharge conduit for first chamber communicates with nonpumping portion or second pumping member
Disconnectable drive element (e.g., clutch, belt, shifter, etc.)
Distributor abutted by or frictionally engaged with pumping member
Distributor adjustment
Distributor coextensive with pumping member end face
Distributor formed from integral portion of flexible wall pumping member
Distributor in piston
Distributor in pumping member
Distributor moved by separate fluid responsive surface
Distributor movement adjustable
Distributor part forms traversed movable pump chamber wall portion
Distributor positioned opposite pumping member end face
Diverse capacity pumps
Diverse pump controlled by rotary pump condition
Diverse pump motor exhaust is aeration fluid
Diverse pump motor exhaust is jet motive fluid
DIVERSE PUMPS
Double acting motor piston
Double acting pump piston
DRILLED WELL FREE PISTON-TYPE PUMP
Driven pump part speed responsive
Electric or magnetic motor
ELECTRICAL OR GETTER TYPE
Electrically or magnetically actuated distributor
Electromagnetic
Element forms both inlet and discharge distributor
Element moves about axis
Elongated flexible chamber wall progressively deformed
Endless chain or belt
Entrainment at exit of impeller
Expansible chamber pump distributor operation modified
EXPANSIBLE CHAMBER TYPE
EXPANSION AND CONTRACTION OF PUMP FLUID

« previous  1 2 3 4 5 6 7 8 9 10 11 12  next »