US PATENT SUBCLASS 417 / 223
.~ Disconnectable drive element (e.g., clutch, belt, shifter, etc.)

Current as of: June, 1999
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417 /   HD   PUMPS

212  DF  CONDITION RESPONSIVE CONTROL OF DRIVE TRANSMISSION OR PUMP DISPLACEMENT {7}
223.~ Disconnectable drive element (e.g., clutch, belt, shifter, etc.)

DEFINITION

Classification: 417/223

(under subclass 212) Apparatus including a mechanical movement having relatively movable parts comprising elements of the drive which can be engaged and separated to start and stop the pump while permitting the power source to operate continuously.