US PATENT SUBCLASS 91 / 319
.~.~ Working member traverses pilot passage to control distributor motor

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}
319.~.~ Working member traverses pilot passage to control distributor motor {1}
320  DF  .~.~.~> Port in piston between opposed working faces

DEFINITION

Classification: 91/319

(under subclass 281) Apparatus in which fluid communication through a motive fluid supply or exhaust passage for a fluid actuated distributor motor is cyclically connected and disconnected by the output motor working member which acts directly as a valve for said passage.

SEE OR SEARCH THIS CLASS, SUBCLASS:

225, for a cyclically operable motor having a distributor in the piston, and in which the piston traverses a pilot port to control distributor motor motive fluid.

290+, for working member traversal of a pilot port in the working chamber side wall to cyclically control a fluid actuated distributor motor by supplying distributing motor actuating fluid from or exhausting distributing motor actuating fluid to a working chamber of the output motor, and particularly subclasses 297+ for such structure combined with a passage for pilot fluid in the working member.