US PATENT SUBCLASS 173 / 33
.~.~ Balanced with respect to axis of tool advance

Current as of: June, 1999
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173 /   HD   TOOL DRIVING OR IMPACTING

31  DF  WITH WORK ENGAGING MEANS SUPPORTING DRIVE {4}
32  DF  .~ Anchored to work {1}
33.~.~ Balanced with respect to axis of tool advance

DEFINITION

Classification: 173/33

(under subclass 32) Apparatus in which the axis of tool advance forms substantially the geometric center of points of engagement of the means which positively engages the work.