US PATENT SUBCLASS 187 / 253
.~.~.~ Shifted by fluid ram

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}
252  DF  .~.~ And reciprocatingly shifted pulley wheel pulling thereon {1}
253.~.~.~ Shifted by fluid ram

DEFINITION

Classification: 187/253

Shifted by fluid ram:

(under subclass 252) Drive-means* wherein the source of power includes a telescopic, fluid powered mechanism having (a) at least two concentric components and (b) the axis of the cable* engaging element attached to the reciprocating component thereof.