US PATENT SUBCLASS 173 / 66
.~.~ Fluid supplied through working chamber of idled cyclically operable drive motor

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

197  DF  WORK CLEANSING {10}
59  DF  .~ By motive fluid for drive motor or advance causing or controlling motor {7}
66.~.~ Fluid supplied through working chamber of idled cyclically operable drive motor {1}
67  DF  .~.~.~> Supplied through distributor maintained in fixed position {3}

DEFINITION

Classification: 173/66

(under subclass 59) Apparatus in which the drive motor comprises a cyclically operable reciprocating type expansible chamber fluid motor, and a specific modification of the motor is provided whereby the motor may be controlled to stop operation and simultaneous continuously direct the flow of the motive fluid stream through one working chamber of the motor for direction upon the work to perform a cleansing function.