US PATENT SUBCLASS 173 / 67
.~.~.~ Supplied through distributor maintained in fixed position

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  DF  .~.~ Fluid supplied through working chamber of idled cyclically operable drive motor {1}
67.~.~.~ Supplied through distributor maintained in fixed position {3}
68  DF  .~.~.~.~> Motor inlet throttle valve maintains distributor fixed
69  DF  .~.~.~.~> Motor exhaust throttled
70  DF  .~.~.~.~> Mechanically maintained in fixed position

DEFINITION

Classification: 173/67

(under subclass 66) Apparatus in which the cyclically operable motor includes a relatively movable motive fluid distributor, and means are provided to stop relative movement of the distributor during the continuous flow of motive fluid through one working chamber.