US PATENT SUBCLASS 254 / 294
.~.~.~ Having common drive source or mechanically interlinked drive trains


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.~.~.~ Having common drive source or mechanically interlinked drive trains {10}
295  DF  .~.~.~.~> Including intermeshing gears in drive {7}
311  DF  .~.~.~.~> Including sprocket wheel and chain in drive
312  DF  .~.~.~.~> Including power transmitting pulley and rope or belt either in drive or in cable return means
313  DF  .~.~.~.~> Including contacting friction wheels having noncollinear axes of rotation in drive
314  DF  .~.~.~.~> Including expansible, noncombustible, fluid motor in drive (e.g., air, steam)
315  DF  .~.~.~.~> Including noncompressible fluid motor or pump in drive
316  DF  .~.~.~.~> Including electric motor in drive
317  DF  .~.~.~.~> Including clutch mechanism in drive having coaxial, rotatable, relatively shiftable axially, power transmitting components {2}
320  DF  .~.~.~.~> Including ratchet wheel and interengaging driving pawl in drive
321  DF  .~.~.~.~> Including means for preventing or retarding rotation of one or more drums in at least one direction {1}


DEFINITION

Classification: 254/294

Having common drive source or mechanically interlinked drive train:

(under subclass 278) Apparatus wherein the drive for at least two drums includes either (a) a common drive source, or (b) a drive train for each of the drums mechanically interlinked with one another, (i.e., the drive trains share at least one common or mutual power-transmitting component).