US PATENT SUBCLASS 172 / 403
.~.~ With power take-off from 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}
403.~.~ With power take-off from wheel {1}
404  DF  .~.~.~> Wheel adjusted by own power

DEFINITION

Classification: 172/403

(under subclass 400) Apparatus in which power derived from the rolling motion of a ground wheel as the apparatus is propelled over the ground is used to move a plurality of said interconnected wheels vertically with respect to the frame.

SEE OR SEARCH CLASS

56, Harvesters,

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

192, Clutches and Power-Stop Control,

62, for clutches adapted for use in raising plows.