US PATENT SUBCLASS 417 / 40
.~.~ By float

Current as of: June, 1999
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417 /   HD   PUMPS

1  DF  CONDITION RESPONSIVE CONTROL OF PUMP DRIVE MOTOR {22}
36  DF  .~ Responsive to accumulation of pumped liquid in receiver {4}
40.~.~ By float {1}
41  DF  .~.~.~> Controlling motive fluid or drive motor

DEFINITION

Classification: 417/40

(under subclass 36) Subject matter in which the sensing means comprises a buoyant element which floats on the surface of the liquid collected in the receptacle.