US PATENT SUBCLASS 417 / 33
.~ Pump stop control means requiring manual reset

Current as of: June, 1999
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417 /   HD   PUMPS

1  DF  CONDITION RESPONSIVE CONTROL OF PUMP DRIVE MOTOR {22}
33.~ Pump stop control means requiring manual reset

DEFINITION

Classification: 417/33

(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.