US PATENT SUBCLASS 172 / 418
.~.~ With actuator

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

395  DF  WITH GROUND SUPPORT VERTICALLY ADJUSTABLE RELATIVE TO FRAME {10}
415  DF  .~ Translating motion {3}
418.~.~ With actuator {2}
419  DF  .~.~.~> Screw jack type
420  DF  .~.~.~> Rack and pinion or ratchet type

DEFINITION

Classification: 172/418

(under subclass 415) Apparatus in which the translating motion is imparted to the ground support by an actuator.

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