US PATENT SUBCLASS 172 / 327
.~.~ With vertically adjustable ground support

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

324  DF  WITH ACTUATOR ON TRAILING GROUND SUPPORTED FRAME FOR MOVING DRAFT MEANS LATERALLY OR VERTICALLY {2}
326  DF  .~ Vertically {1}
327.~.~ With vertically adjustable ground support {1}
328  DF  .~.~.~> Interconnected means for adjusting draft means and ground support

DEFINITION

Classification: 172/327

(under subclass 326) Apparatus in which a ground support is vertically adjustable with respect to the framework.

(1) Note. For the meaning of "adjustable" see the class definition.

(2) Note. Devices in which the framework tilts about the

wheel axis are not included in this definition. See subclasses 323 or 326 for such devices.