US PATENT SUBCLASS 254 / 310
.~.~.~.~.~ With 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}
295  DF  .~.~.~.~ Including intermeshing gears in drive {7}
310.~.~.~.~.~ With means for preventing or retarding rotation of one or more drums in at least one direction

DEFINITION

Classification: 254/310

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

(under subclass 295) Apparatus provided with means, (e.g., a shiftable lock, friction brake) for either preventing movement of one or more of the drums about their axis in at least one of their directions of rotation or for slowing down the rotational speed of one or more of the drums in at least one direction 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 drive drum provided with means for preventing or retarding rotation of the drum in at least one direction.