US PATENT SUBCLASS 173 / 99
.~.~.~ Movement out of path is about rotating pivot

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}
98  DF  .~.~ Hammer head moves out of arcuate or rotary path {1}
99.~.~.~ Movement out of path is about rotating pivot

DEFINITION

Classification: 173/99

(under subclass 98) Apparatus in which the hammer detours from the path generated about an axis by moving in a second path generated about an axis.