US PATENT SUBCLASS 172 / 792
.~.~ Scraper adjustable about vertical axis of annular support

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

781  DF  SCRAPER BETWEEN FRONT AND REAR GROUND SUPPORTS OF VEHICLE {12}
791  DF  .~ Three or more independently operable scraper actuators {1}
792.~.~ Scraper adjustable about vertical axis of annular support {1}
793  DF  .~.~.~> Actuator for laterally shifting support

DEFINITION

Classification: 172/792

(under subclass 791) Apparatus in which the grading scraper is supported from the vehicle frame by a means including a circular ring or ring portion which lies in a generally horizontal plane when the scraper cutting edge is horizontal and the scraper is adjustable relative to the vehicle frame about the axis of the ring or ring portion.