US PATENT SUBCLASS 173 / 126
.~ Hammer head comprises plural parts or diverse materials

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

90  DF  IMPACTING DEVICES (E.G., HAMMERS) {19}
126.~ Hammer head comprises plural parts or diverse materials {1}
127  DF  .~.~> Piston of drive motor

DEFINITION

Classification: 173/126

(under subclass 90) Apparatus in which the hammer head is composed of (1) at least two separate elements or (2) at least two separate materials.

SEE OR SEARCH THIS CLASS, SUBCLASS:

118, for a hammer head having a spring bodily cyclically moved therewith.