US PATENT SUBCLASS 254 / 306
.~.~.~.~.~ Also including ratchet wheel and driving pawl

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}
306.~.~.~.~.~ Also including ratchet wheel and driving pawl {1}
307  DF  .~.~.~.~.~.~> Plural driving pawls {1}

DEFINITION

Classification: 254/306

Also including ratchet wheel and driving pawl:

(under subclass 295) Apparatus wherein the interlinked drive trains also include a rotatable wheel having teeth on its perimeter and a pawl which is reciprocated along a linear or angular path by the power source; the pawl alternately engages the teeth and turns the wheel at least a portion of a revolution around its axis during movement in one of its directions and disengages the teeth during its return movement in the other direction.

SEE OR SEARCH THIS CLASS, SUBCLASS:

217, for implements or apparatus for tensioning flexible material or for extracting stumps or poles including a rotatably driven drum provided with a drive having a ratchet wheel and an interengaging driving pawl.