US PATENT SUBCLASS 172 / 549
.~.~.~ Tooth or blade units angularly adjustable on axle

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

518  DF  ROLLING, ROTATING OR ORBITALLY MOVING TOOL {30}
540  DF  .~ Tool has circumferentially spaced teeth, tines, blades or the like {13}
548  DF  .~.~ Tooth or blade units on single axle {1}
549.~.~.~ Tooth or blade units angularly adjustable on axle

DEFINITION

Classification: 172/549

(under subclass 548) Apparatus in which a means is provided on the tooth or blade units or on the supporting axle therefor for adjusting the angular disposition of the tooth or blade units relative to each other in a circumferential direction about said axle.

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

SEE OR SEARCH THIS CLASS, SUBCLASS:

109, for ground-engaging teeth or blades adjustably mounted on the peripheral surfaces of rotary tools, which tools are

driven about horizontally disposed, longitudinally extending axes.

550, for a rolling or rotating tool with adjustable teeth.