US PATENT SUBCLASS 418 / 28
.~ By axial movement of movable member

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

16  DF  WITH CHANGEABLE WORKING CHAMBER MAGNITUDE {10}
28.~ By axial movement of movable member

DEFINITION

Classification: 418/28

(under subclass 16) Apparatus in which a dimension of the working chamber is changed by moving a part thereof in a direction along the axis of rotation of the working member.