US PATENT SUBCLASS 173 / 131
.~.~ Formed of plural transmitting part or separate layers


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}
131.~.~ Formed of plural transmitting part or separate layers


DEFINITION

Classification: 173/131

(under subclass 128) Apparatus in which the impact transmitting mass of material comprises structure arranged

such that the impact is transmitted through (1) separate parts or (2) specified different materials.

SEE OR SEARCH THIS CLASS, SUBCLASS:

93.7, for an anvil means which translates longitudinal impact relative to a tool shaft to impact in a torsional direction, and which may comprise plural parts.