US PATENT SUBCLASS 172 / 398
.~.~ Linkage to tool

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

395  DF  WITH GROUND SUPPORT VERTICALLY ADJUSTABLE RELATIVE TO FRAME {10}
397  DF  .~ Tool land ground support moved together relative to frame {1}
398.~.~ Linkage to tool

DEFINITION

Classification: 172/398

(under subclass 397) Apparatus in which the earth working element is interconnected by a linkage with the ground support so that movement of one influences movement of the other.

SEE OR SEARCH THIS CLASS, SUBCLASS:

779, for a scraper whose position is automatically controlled by a linkage for leveling, the scraper and a wheel being interconnected to influence movement of each other.