US PATENT SUBCLASS 173 / 218
.~ Fluid motor

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

213  DF  MEANS TO DRIVE TOOL ABOUT AN AXIS {7}
218.~ Fluid motor {4}
219  DF  .~.~> Having sound attenuator
220  DF  .~.~> With means to rotate reciprocating piston
221  DF  .~.~> With manual means to control motor
222  DF  .~.~> Plural motors

DEFINITION

Classification: 173/218

Fluid motor:

(under subclass 213) Apparatus wherein the drive means is a pneumatically or hydraulically operated power device.