US PATENT SUBCLASS 173 / 111
.~.~.~.~ Rotary drive path is directly through hammer head

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}
109  DF  .~.~ Rotated by hammer head or drive for hammer head {1}
110  DF  .~.~.~ Rotation is intermittent or oscillatory {1}
111.~.~.~.~ Rotary drive path is directly through hammer head

DEFINITION

Classification: 173/111

(under subclass 110) Apparatus in which the hammer head comprises an element in the drive train for moving the tool about an axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:

97, for an impacting device having a hammer head that reciprocates and moves about an axis, and in which the movement about an axis is transmitted to the tool.