US PATENT SUBCLASS 172 / 811
.~ Transversely mounted blade (e.g., bulldozer, etc.)

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.~ Transversely mounted blade (e.g., bulldozer, etc.) {11}
812  DF  .~.~> With valve or pump for hydraulic control system
813  DF  .~.~> Fluid line specifically arranged, or shield for system component
814  DF  .~.~> Having means controlling drive for interconnected vehicles
815  DF  .~.~> Contiguous, relatively adjustable blades; or blade having relatively adjustable earth-engaging parts
816  DF  .~.~> Blade mounting includes resilient connection
817  DF  .~.~> Removable attachment for general purpose vehicle
818  DF  .~.~> Blade angle adjustable in a horizontal plane {2}
824  DF  .~.~> Having adjustable tilt of angularly fixed blade {2}
827  DF  .~.~> Having means to prevent lateral movement of mounting or blade
828  DF  .~.~> With power means for raising and lowering blade {2}
832  DF  .~.~> With blade-carried ground support

DEFINITION

Classification: 172/811

Transversely mounted blade (e.g., bulldozer, etc.):

(under subclass 810) Apparatus in which the earth working element has a vertical, generally planar, earth working portion extended in its dimension transverse to the vehicle's direction of travel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

701.1+, for a blade, per se.