US PATENT SUBCLASS 91 / 225
.~.~ Piston traverses pilot port to control distributor motor motive fluid

Current as of: June, 1999
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91 /   HD   MOTORS: EXPANSIBLE CHAMBER TYPE

218  DF  CYCLICALLY OPERABLE {34}
222  DF  .~ Distributor in piston (422) {6}
225.~.~ Piston traverses pilot port to control distributor motor motive fluid

DEFINITION

Classification: 91/225

(under subclass 222) Apparatus in which the distributor in the piston is operated by a fluid motor, and a port is provided in the working chamber side wall to convey inlet or exhaust for the distributor motor, the position of the piston controlling said port so as to control supply or exhaust for the distributor motor.