US PATENT SUBCLASS 254 / 378
.~.~.~ Frictional brake assembly having rotating, wheel structure and shiftable shoe or band

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}
375  DF  .~.~ Including means for preventing or retarding rotation of drum in at least one direction {3}
378.~.~.~ Frictional brake assembly having rotating, wheel structure and shiftable shoe or band {1}
379  DF  .~.~.~.~> Having fluid actuator for shifting shoe or band

DEFINITION

Classification: 254/378

(under subclass 375) Frictional brake assembly having rotating, wheel structure and shiftable shoe or band: Apparatus wherein the means consist of a rotating wheel structure which either (a) forms a portion of the drum, or (b) is mechanically connected to and has its rotation correlated with and dependent upon the drum, and an element shiftable into and out of contact with the wheel structure, the resistance used by the surface friction created during the contact of the wheel structure and the element is relied upon to slow down or stop the rotation of the drum.

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.