US PATENT SUBCLASS 417 / 15
.~ With control of pump drive transmission


Current as of: June, 1999
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417 /   HD   PUMPS

1  DF  CONDITION RESPONSIVE CONTROL OF PUMP DRIVE MOTOR {22}
15.~ With control of pump drive transmission


DEFINITION

Classification: 417/15

(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).