US PATENT SUBCLASS 173 / 130
.~.~ Adapted to fit tool noncircular in cross section

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

90  DF  IMPACTING DEVICES (E.G., HAMMERS) {19}
128  DF  .~ Impact transmitting anvil {5}
130.~.~ Adapted to fit tool noncircular in cross section

DEFINITION

Classification: 173/130

(under subclass 128) Apparatus in which the impact transmitting mass of material is specifically adapted to engage a tool or tool shaft of a specific shape, other than circular in cross-section, at the location of engagement.