US PATENT SUBCLASS 172 / 710
.~.~ Pivoted tool biased beyond pivot

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

681  DF  TOOL, STANDARD OR CONNECTION {32}
705  DF  .~ Spring biased or formed tool or tool part {5}
710.~.~ Pivoted tool biased beyond pivot

DEFINITION

Classification: 172/710

(under subclass 705) Apparatus comprising an earthworking element mounted to swing about a horizontal transverse axis, the element or its shank or standard having a rigid portion extended from said pivot in a direction different from the element and biasing means acting on said extended portion.