US PATENT SUBCLASS 172 / 143
.~ Including intermittently rolling tool

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

133  DF  DIVERSE TOOLS {29}
143.~ Including intermittently rolling tool

DEFINITION

Classification: 172/143

(under subclass 133) Apparatus in which one of the earth working elements is of the rolling or rotating type and including brake or stop means for slowing down or stopping the rotation or rolling thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

528+, for rolling or rotating tools having means for stopping or retarding the rotation thereof.