US PATENT SUBCLASS 173 / 96
.~.~.~ Arcuate or rotary movement selectively releasable or variable independent of reciprocation

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

90  DF  IMPACTING DEVICES (E.G., HAMMERS) {19}
94  DF  .~ Hammer head moves in arcuate path or rotates {3}
95  DF  .~.~ Hammer head reciprocates along fixed transverse axis {2}
96.~.~.~ Arcuate or rotary movement selectively releasable or variable independent of reciprocation

DEFINITION

Classification: 173/96

(under subclass 95) Apparatus in which means are provided to selectively release or vary the movement in the path generated about an axis without stopping or changing the reciprocation in the path coincident with or parallel to the axis.