US PATENT SUBCLASS 91 / 302
.~.~.~ Pilot port relieved into working chamber having working member controlled exhaust port

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}
302.~.~.~ Pilot port relieved into working chamber having working member controlled exhaust port

DEFINITION

Classification: 91/302

(under subclass 290) Apparatus in which the pilot port conducts exhaust fluid from the distributor motor working chamber into the output motor working chamber, said output motor working chamber being exhausted through a port in the wall thereof which is controlled by the position of the output motor working member.