US PATENT SUBCLASS 254 / 305
.~.~.~.~.~.~.~ Truncated cone shaped


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}
299  DF  .~.~.~.~.~ Also including clutch mechanism having coaxial, rotatable, relatively shiftable axially, power transmitting components {4}
304  DF  .~.~.~.~.~.~ Components having frictional contact surface {1}
305.~.~.~.~.~.~.~ Truncated cone shaped


DEFINITION

Classification: 254/305

Truncated cone shaped:

(under subclass 304) Apparatus wherein the portion of the surface of each rotatable component coming into contact with the other has a generally truncated cone shape.