US PATENT SUBCLASS 418 / 269
.~.~ Constantly interposed pressure fluid spreads plural vanes

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

259  DF  POSITIVELY ACTUATED VANE {4}
268  DF  .~ Fluid biased {1}
269.~.~ Constantly interposed pressure fluid spreads plural vanes

DEFINITION

Classification: 418/269

(under subclass 268) Apparatus in which a plurality of vanes have their opposed inner surfaces continuously subject to fluid pressure in a zone of fluid pressure common to each to maintain the vanes in cylinder wall engagement.