US PATENT SUBCLASS 254 / 289
.~.~.~.~ Movement engages or disengages drum from drive

Current as of: June, 1999
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254 /   HD   IMPLEMENTS OR APPARATUS FOR APPLYING PUSHING OR PULLING FORCE

264  DF  APPARATUS FOR HAULING OR HOISTING LOAD, INCLUDING DRIVEN DEVICE WHICH CONTACTS AND PULLS ON CABLE {4}
266  DF  .~ Device includes rotatably driven, cable contacting drum {34}
278  DF  .~.~ Plural drums or drum with plural distinct sections {7}
288  DF  .~.~.~ With means affixing at least one drum to supporting base and allowing movement between drum and base {1}
289.~.~.~.~ Movement engages or disengages drum from drive

DEFINITION

Classification: 254/289

Movement engages or disengages drum from drive:

(under subclass 288) Apparatus wherein the selective shifting of the rotational axis or circumference of one or more of the drums either engages or disengages the shifting drums from their drive.