US PATENT SUBCLASS 280 / 43.2
.~.~.~.~ Screw-jack type

Current as of: June, 1999
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280 /   HD   LAND VEHICLES

29  DF  WHEELED {21}
638  DF  .~ Extensible {6}
43  DF  .~.~ Vertically adjustable wheels {8}
43.17  DF  .~.~.~ With actuator {6}
43.2.~.~.~.~ Screw-jack type

DEFINITION

Classification: 280/43.2

(under subclass 43.17) Vehicle wherein the means causing actuation comprises a threaded stud member whose threads engage the threads of a threaded nut member.

SEE OR SEARCH CLASS

172, Earth Working,

419, for an earth working implement and frame having a ground engaging support which may be caused to translate vertically relative to the frame by means of a screw jack type actuator, and subclass 427 for a screw jack type actuator to move the ground engaging support of an earth working element frame vertically relative to the frame.