US PATENT SUBCLASS 418 / 188
.~ Supply or exhaust passage through working member center of rotation

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

183  DF  WITH SUPPLY OR EXHAUST PASSAGE IN WORKING MEMBER {4}
188.~ Supply or exhaust passage through working member center of rotation

DEFINITION

Classification: 418/188

(under subclass 183) Apparatus wherein the passage means

includes at least one working fluid passage passing through or including the working member axis of rotation.