US PATENT SUBCLASS 91 / 293
.~.~.~ With passage from port controlled by pilot valve

Current as of: June, 1999
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91 /   HD   MOTORS: EXPANSIBLE CHAMBER TYPE

218  DF  CYCLICALLY OPERABLE {34}
281  DF  .~ Working member controlled motive fluid for distributor motor {12}
290  DF  .~.~ Working member traverses pilot port in working chamber side wall {9}
293.~.~.~ With passage from port controlled by pilot valve {1}
294  DF  .~.~.~.~> Pilot valve operated by separately controlled fluid motor

DEFINITION

Classification: 91/293

(under subclass 290) Apparatus in which a cyclically operated valve controls the passage from the output motor working chamber to the distributor motor working chamber.