US PATENT SUBCLASS 172 / 94
.~.~.~ Blade oscillating arcuately or swivelly with respect to rotary carrier

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

35  DF  WITH DRIVE MEANS FOR TOOL OR CLEANER {37}
91  DF  .~ Blade movable with respect to cyclically driven carrier {2}
92  DF  .~.~ With means for moving blade {3}
94.~.~.~ Blade oscillating arcuately or swivelly with respect to rotary carrier

DEFINITION

Classification: 172/94

(under subclass 92) Apparatus in which the tooth or like earth working part or portion is mounted on a rotating carrier, there being provided a means for moving said tooth, part, or portion back and forth in an arcuate path relative to said carrier.