US PATENT SUBCLASS 417 / 5
.~.~.~.~ With control of plural pump drive motors

Current as of: June, 1999
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417 /   HD   PUMPS

1  DF  CONDITION RESPONSIVE CONTROL OF PUMP DRIVE MOTOR {22}
2  DF  .~ Plural pumps having separate drive motors, supply sources, or delivery destinations {1}
3  DF  .~.~ Pumps in parallel flow paths with common inflow or outflow {1}
4  DF  .~.~.~ Having means sensing condition in common inflow or outflow line {1}
5.~.~.~.~ With control of plural pump drive motors {2}
6  DF  .~.~.~.~.~> With additional means sensing condition of one pump or path
7  DF  .~.~.~.~.~> Sequential starting or stopping of pumps {1}

DEFINITION

Classification: 417/5

(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.