US PATENT SUBCLASS 173 / 94
.~ Hammer head moves in arcuate path or rotates

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

90  DF  IMPACTING DEVICES (E.G., HAMMERS) {19}
94.~ Hammer head moves in arcuate path or rotates {3}
95  DF  .~.~> Hammer head reciprocates along fixed transverse axis {2}
98  DF  .~.~> Hammer head moves out of arcuate or rotary path {1}
100  DF  .~.~> Hammer head movement is oscillatory

DEFINITION

Classification: 173/94

(under subclass 90) Apparatus in which the hammer, or a portion thereof, travels substantially upon some portion of a path generated by a point moving at a constant distance about a relatively fixed axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:

93+, for a hammer having an anvil arranged to transmit torsional impact to a tool, the hammer normally being moved about an axis.

SEE OR SEARCH CLASS

72, Metal Deforming,

406, for a "rocking" tool in a metal shaping machine.