US PATENT SUBCLASS 91 / 305
.~.~.~ Plural pilot valves

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}
305.~.~.~ Plural pilot valves {1}
306  DF  .~.~.~.~> Independent

DEFINITION

Classification: 91/305

(under subclass 304) Apparatus in which the distributor motor is controlled by plural, relatively movable pilot valves, either in series or parallel.