US PATENT SUBCLASS 418 / 63
.~ With relatively movable partition 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.~ With relatively movable partition member {4}
64  DF  .~.~> Slidable in working member
65  DF  .~.~> Having working fluid passage
66  DF  .~.~> Integral with working member
67  DF  .~.~> Pivoted to working member

DEFINITION

Classification: 418/63

(under subclass 54) Apparatus in which there is provided a displaceable divider element mounted on either the cylinder member or the working member but engaging the other member and moving incident to the expansion and contraction of the working chamber to separate the low and high pressure zones of the working chamber.