(under subclass 49) Apparatus in which either the working member or the other member is provided with a movable, expandable, adjustable or deformable means for engaging the other of said members to oppose the passage of working fluid therepast to constrain the working fluid to move in a prescribed path of flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
104, and the subclasses thereunder for other rotary expansible chamber devices having sealing means.
