US PATENT SUBCLASS 254 / 291
.~.~.~.~ Noncompressible fluid

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}
290  DF  .~.~.~ Plural, distinct, drive motors {2}
291.~.~.~.~ Noncompressible fluid

DEFINITION

Classification: 254/291

Noncompressible fluid:

(under subclass 290) Apparatus wherein at least one of the motors is operated by fluid which is not appreciably reducible in volume by a change in pressure or temperature.