US PATENT SUBCLASS 418 / 64
.~.~ Slidable in working member

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}
64.~.~ Slidable in working member

DEFINITION

Classification: 418/64

(under subclass 63) Apparatus in which the divider element has reciprocal movement in the working member.