US PATENT SUBCLASS 91 / 306
.~.~.~.~ Independent

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

DEFINITION

Classification: 91/306

(under subclass 305) Apparatus in which each pilot valve controls the distributor motor independent of the movement of any other pilot valve.

(1) Note. Under this definition, pilot valves are considered to be independent if one pilot valve controls the distributor motor working member to move in one direction and another pilot valve controls the distributor motor working member to move in the opposite direction.