US PATENT SUBCLASS 418 / 225
VANE OR ABUTMENT COMPRISES ROTATABLE ELEMENT

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

225VANE OR ABUTMENT COMPRISES ROTATABLE ELEMENT {2}
226  DF  .~> Rotates about non-parallel axis
227  DF  .~> Positively rotated

DEFINITION

Classification: 418/225

(under the class definition) Apparatus in which either an abutment or a vane comprises or includes a rotatable antifriction member to engage the working member or the cylinder respectively.