US PATENT SUBCLASS 187 / 256
.~.~.~ Plural driven drums

Current as of: June, 1999
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187 /   HD   ELEVATOR, INDUSTRIAL LIFT TRUCK, OR STATIONARY LIFT FOR VEHICLE

250  DF  HAVING SPECIFIC LOAD SUPPORT DRIVE-MEANS OR ITS CONTROL {6}
251  DF  .~ Includes linking support cable (e.g., rope, chain) in drive-means {2}
254  DF  .~.~ And rotatably driven drum pulling thereon {6}
256.~.~.~ Plural driven drums {4}
257  DF  .~.~.~.~> Each moves distinct load support
258  DF  .~.~.~.~> Having distinct drive motors
259  DF  .~.~.~.~> Cable accumulating-type drums
260  DF  .~.~.~.~> Different size drums

DEFINITION

Classification: 187/256

Plural driven drums:

(under subclass 254) Drive-means* including at least one other drum turned about its central axis by a source of power and having a perimeter which contacts the same or another cable* to apply a pulling force on the same or another load-underlying support surface.