US PATENT SUBCLASS 418 / 175
.~.~ Moving partition on stationary member


Current as of: June, 1999
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418 /   HD   ROTARY EXPANSIBLE CHAMBER DEVICES

160  DF  MOVING CYLINDER {1}
161  DF  .~ Rotating {5}
175.~.~ Moving partition on stationary member


DEFINITION

Classification: 418/175

(under subclass 161) Apparatus wherein the member forming the inner surface acting as an abutment against which the motive fluid reacts is stationary and is formed with an additional relatively movable member that moves back and forth in relation thereto, said relatively movable member also cooperating with the outer fluid actuated surface to form the working chamber.