US PATENT SUBCLASS 254 / 336
.~.~.~.~ Plural elements

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}
334  DF  .~.~ Having rotatable, cable guiding, pulley wheel element spaced from drum {2}
335  DF  .~.~.~ Element repositionable relative to drum {1}
336.~.~.~.~ Plural elements {1}
337  DF  .~.~.~.~.~> Cable supported

DEFINITION

Classification: 254/336

Plural elements:

(under subclass 335) Apparatus wherein two or more rotatable, cable guiding, pulley wheel elements are spaced from the drum, at least one of the elements changes its position or attitude in relationship to the drum.