US PATENT SUBCLASS 172 / 543
.~.~ Spring tooth or blade


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}
543.~.~ Spring tooth or blade


DEFINITION

Classification: 172/543

(under subclass 540) Apparatus in which the teeth, tines, blades, or the like are formed of an inherently resilient material whereby such teeth, tines, blades, or the like may flex or yield under stress.

SEE OR SEARCH THIS CLASS, SUBCLASS:

96, for spring teeth, blades, tines, or the like mounted on a cyclically driven carrier.

643, and 705+, for spring teeth, per se.

SEE OR SEARCH CLASS

152, Resilient Tires and Wheels, 5+, for spring wheels having deformable ground-engaging rim portions whereby the wheel as a whole does not retain its circular form during rotation.