US PATENT SUBCLASS 173 / 108
.~.~.~ Reciprocating type separate motor

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

90  DF  IMPACTING DEVICES (E.G., HAMMERS) {19}
104  DF  .~ With means for rotating tool {2}
105  DF  .~.~ Rotated by separate motor {3}
108.~.~.~ Reciprocating type separate motor

DEFINITION

Classification: 173/108

(under subclass 105) Apparatus in which the motor which causes the driven element to move about an axis is provided with a working member which cyclically moves to and fro.