US PATENT SUBCLASS 418 / 267
.~.~ With fluid bias

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

259  DF  POSITIVELY ACTUATED VANE {4}
266  DF  .~ Spring biased {1}
267.~.~ With fluid bias

DEFINITION

Classification: 418/267

(under subclass 266) Apparatus wherein fluid under pressure assists the resilient mechanical means to urge the vane into cylinder wall engagement.