US PATENT SUBCLASS 254 / 360
.~.~ Drive includes expansible, noncombustible, fluid motor (e.g., air, steam)

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}
360.~.~ Drive includes expansible, noncombustible, fluid motor (e.g., air, steam)

DEFINITION

Classification: 254/360

Drive includes expansible, noncombustible, fluid motor (e.g., air, steam):

(under subclass 266) Apparatus wherein the drive includes a motor of the kind operated by a fluid which (1) is appreciably expanded in volume by appropriate changes in (a) the amount of pressure on it, or (b) it temperature, and (2) is of a generally noncombustible nature and undergoes no alterations in its chemical composition while in the motor.