US PATENT SUBCLASS 418 / 266
.~ Spring biased

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

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

DEFINITION

Classification: 418/266

(under subclass 259) Apparatus wherein the vane is positively urged in one direction, usually into engagement with the cylinder wall surface, by a resilient mechanical means.