US PATENT SUBCLASS 254 / 321
.~.~.~.~ Including means for preventing or retarding rotation of one or more drums in at least one direction


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}
321.~.~.~.~ Including means for preventing or retarding rotation of one or more drums in at least one direction {1}
322  DF  .~.~.~.~.~> Frictional brake assembly having rotating, wheel structure and shiftable shoe or band


DEFINITION

Classification: 254/321

Including means for preventing or retarding rotation of one or more drums in at least one direction:

(under subclass 294) Apparatus including means for either preventing movement of at least one of the drums about its axis in one or both of its directions of rotation or for slowing down the rotational speed of at least one of the drums in one or both of its directions of rotation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

222, for implements or apparatus for tensioning flexible material or for extracting stumps or poles including a rotatably driven drum provided with means for preventing or retarding rotation of the drum in at least one direction.