US PATENT SUBCLASS 91 / 307
.~.~.~ Pilot valve relieves constantly supplied distributor motor fluid

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}
304  DF  .~.~ Pilot valve controlled distributor motor (461) {9}
307.~.~.~ Pilot valve relieves constantly supplied distributor motor fluid

DEFINITION

Classification: 91/307

(under subclass 304) Apparatus in which the pilot valve controls the exhaust of motive fluid from the distributor motor working chamber, said chamber being constantly supplied with motive fluid under all conditions of operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

51+, for motors having a working chamber which is constantly supplied with motive fluid and having a controlled vent or exhaust passage from said chamber.