US PATENT SUBCLASS 254 / 379
.~.~.~.~ Having fluid actuator for shifting 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  DF  .~.~.~ Frictional brake assembly having rotating, wheel structure and shiftable shoe or band {1}
379.~.~.~.~ Having fluid actuator for shifting shoe or band

DEFINITION

Classification: 254/379

Having fluid actuator for shifting shoe or band:

(under subclass 378) Apparatus in which the element is shifted into and out of engagement with the wheel by a mechanism which utilizes fluid force.