US PATENT SUBCLASS 172 / 402
.~.~.~ With power take-off from self-adjusted wheel

Current as of: June, 1999
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172 /   HD   EARTH WORKING

395  DF  WITH GROUND SUPPORT VERTICALLY ADJUSTABLE RELATIVE TO FRAME {10}
400  DF  .~ Actuator and interconnected means for adjusting wheels on different axles {4}
401  DF  .~.~ Three or more adjustable wheels on different axles interconnected {1}
402.~.~.~ With power take-off from self-adjusted wheel

DEFINITION

Classification: 172/402

(under subclass 401) Apparatus in which power derived from the rolling motion of one of said interconnected wheels as the apparatus is propelled over the ground is used to move said wheels vertically with respect to the frame.

SEE OR SEARCH THIS CLASS, SUBCLASS:

408+, for a wheel which is carried by a crank axle mount which is adjusted by power derived from the wheel.

SEE OR SEARCH CLASS

56, Harvesters,

211, for harvester frames which are adjusted by power derived from a traction wheel.

280, Land Vehicles, 47, for a vehicle having an extensible wheel that is vertically adjustable by means of power derived from the wheel as it rolls over the ground.