US PATENT SUBCLASS 418 / 60
.~.~ Axially spaced working members

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  DF  .~ Plural working members or chambers {3}
60.~.~ Axially spaced working members

DEFINITION

Classification: 418/60

(under subclass 58) Apparatus in which at least one of the plurality of working members is spaced in the direction of or along the rotational axis of one other working member.