US PATENT SUBCLASS 173 / 105
.~.~ Rotated by 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.~.~ Rotated by separate motor {3}
106  DF  .~.~.~> Rotation motor exhaust is motive fluid for hammer motor
107  DF  .~.~.~> Motive fluid supplied to rotation motor is hammer motor exhaust
108  DF  .~.~.~> Reciprocating type separate motor

DEFINITION

Classification: 173/105

(under subclass 104) Apparatus in which the tool is moved about an axis by a motor which does not drive the hammer head.