US PATENT SUBCLASS 418 / 172
.~.~.~ With movable partition member

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

160  DF  MOVING CYLINDER {1}
161  DF  .~ Rotating {5}
164  DF  .~.~ Rotary internal reacting member {3}
172.~.~.~ With movable partition member {2}
173  DF  .~.~.~.~> Partition radially slidable in internal member
174  DF  .~.~.~.~> Partition radially slidable in cylinder

DEFINITION

Classification: 418/172

(under subclass 164) Apparatus wherein either the outer rotating cylinder or the member forming the inner surface is provided with a movable divider member (e.g., vane or abutment) having a wall or portion thereof forming part of the expansible working chamber.