US PATENT SUBCLASS 418 / 58
.~ Plural working members or chambers


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}
58.~ Plural working members or chambers {3}
59  DF  .~.~> Radially spaced working chambers
60  DF  .~.~> Axially spaced working members
61.1  DF  .~.~> Circumferentially spaced working chambers {2}


DEFINITION

Classification: 418/58

(under subclass 54) Apparatus in which there is provided either (1) a plurality of working members mounted to rotate in the same or different working chambers or (2) two or more working chambers.