US PATENT SUBCLASS 254 / 92
.~ Screw

Current as of: June, 1999
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254 /   HD   IMPLEMENTS OR APPARATUS FOR APPLYING PUSHING OR PULLING FORCE

89 R  DF  MULTIPLE LIFTERS (E.G., VEHICLE LIFTS) {4}
92.~ Screw

DEFINITION

Classification: 254/92

Screw:

(under subclass 89) Multiple lifters in which the load is lifted directly by screws.

SEE OR SEARCH THIS CLASS, SUBCLASS:

7, for hoist trucks using a screw to raise the load.

SEE OR SEARCH CLASS

104, Railways,

32.1+, for track changers employing screw devices.

187, Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle,

214, for a screw driven stationary lift for a roadway vehicle which elevates the entire vehicle to a significantly higher level where it is inspected or repaired.