US PATENT SUBCLASS 301 / 53
.~.~ Recessions in rim

Current as of: June, 1999
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301 /   HD   LAND VEHICLES: WHEELS AND AXLES

5.1  DF  WHEEL {21}
41.1  DF  .~ Traction increasing {5}
53.~.~ Recessions in rim

DEFINITION

Classification: 301/53

(under subclass 41.1) Wheel wherein the ground-engaging portion of the wheel (other than a "tire") is provided in its face with a series of openings or depressions to increase the tractive effort thereof.

SEE OR SEARCH CLASS

172, Earth Working,

534, for a rolling earth working tool with openings in the rim.