US PATENT SUBCLASS 173 / 125
.~ Hammer head constitutes or fixed to drive motor cylinder


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

90  DF  IMPACTING DEVICES (E.G., HAMMERS) {19}
125.~ Hammer head constitutes or fixed to drive motor cylinder


DEFINITION

Classification: 173/125

(under subclass 90) Apparatus in which the mass of material which forms the hammer head includes an internal chamber which receives the piston of a motor, said internal chamber being adapted to receive motive material to cause the mass of material to move relative to the piston and deliver a blow.

SEE OR SEARCH CLASS

91, Motors: Expansible Chamber Type,

196+, for an expansible chamber motor in which the cylinder necessarily moves, and including a moving cylinder which may be recited as a hammer head.

92, Expansible Chamber Devices,

117+, for a moving cylinder, and including a move cylinder which may be recited as a hammer head. 123, Internal-Combustion Engines,

52.1+, for an internal combustion engine having a moving cylinder, and including a moving cylinder which may be recited as a hammer head.