US PATENT SUBCLASS 187 / 268
.~.~ Driven rider

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}
267  DF  .~ Includes threaded rider mating with support screw in drive-means {1}
268.~.~ Driven rider

DEFINITION

Classification: 187/268

Driven rider:

(under subclass 267) Drive-means* wherein the apertured element attached to the load-underlying support surface is rotated about the axis of the aperture by the power source.