.~ Axially movable end wall or end wall portion {4}
132
.~.~ Progressively biased from inlet to outlet
DEFINITION
Classification: 418/132
(under subclass 131) Apparatus wherein the side plate or end wall is urged into sealing engagement with the side of the working member, the urging thereof being in opposition to and at least substantially commensurate with the differing working fluid pressures within the working chamber as the working fluid moves from inlet to outlet thereof.
