US PATENT SUBCLASS 418 / 65
.~.~ Having working fluid passage

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

54  DF  WORKING MEMBER HAS PLANETARY OR PLANETATING MOVEMENT {6}
63  DF  .~ With relatively movable partition member {4}
65.~.~ Having working fluid passage

DEFINITION

Classification: 418/65

(under subclass 63) Apparatus in which the divider element is provided with a passage means to allow ingress or egress of the working fluid.

(1) Note. A blade-like partition element having a passage for pressurized working fluid for biasing the blade-like partition element but not for intake or exhaust of working fluid to or from the working chamber is not classifiable here. See subclass 249 for fluid biased abutments and subclasses 267 and 268 for fluid biased vanes.