US PATENT SUBCLASS 172 / 824
.~.~ Having adjustable tilt of angularly fixed blade

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

810  DF  MOUNTING FOR PUSHED TOOL AT END OF MOTOR VEHICLE {3}
811  DF  .~ Transversely mounted blade (e.g., bulldozer, etc.) {11}
824.~.~ Having adjustable tilt of angularly fixed blade {2}
825  DF  .~.~.~> About a pivot axis fixed to mounting
826  DF  .~.~.~> Including adjustable length device between mounting means and upper corner portion of blade

DEFINITION

Classification: 172/824

Having adjustable tilt of angularly fixed blade:

(under subclass 811) Apparatus including means to maintain the working edge of the blade in any one of a plurality of selected angular orientations with respect to ground within a generally vertical plane.

(1) Note. "Tilt" is the art term which refers to this adjustment.