US PATENT SUBCLASS 254 / 311
.~.~.~.~ Including sprocket wheel and chain in 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}
294  DF  .~.~.~ Having common drive source or mechanically interlinked drive trains {10}
311.~.~.~.~ Including sprocket wheel and chain in drive


DEFINITION

Classification: 254/311

Including sprocket wheel and chain in drive:

(under subclass 294) Apparatus wherein the interlinked drive trains include at least one rotatable wheel having a

plurality of toothlike or other shaped projections on its periphery and a chain or apertured belt partially wrapped around the wheel and adapted to cooperate with the projections on the wheel.

(1) Note. The chain or apertured belt of this subclass is never attached or connected to the object being moved.