US PATENT SUBCLASS 173 / 203
.~.~ Having cam to compress spring

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

90  DF  IMPACTING DEVICES (E.G., HAMMERS) {19}
202  DF  .~ Hammer head driven by spring {4}
203.~.~ Having cam to compress spring

DEFINITION

Classification: 173/203

Having cam to compress spring:

(under subclass 202) Apparatus including an eccentric or irregularly shaped surface used to squeeze the spring.