US PATENT SUBCLASS 172 / 104
.~.~ Unidirectional clutch in drive from ground wheel

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

35  DF  WITH DRIVE MEANS FOR TOOL OR CLEANER {37}
103  DF  .~ With overload relief or clutch in drive train (e.g., overload release, etc.) {1}
104.~.~ Unidirectional clutch in drive from ground wheel

DEFINITION

Classification: 172/104

(under subclass 103) Apparatus in which an overrunning clutch or its equivalent is interposed between a ground wheel and an earth working element driven thereby in such a manner that the wheel may drive the earth working element when said wheel is turning in one direction but not in the other.