US PATENT SUBCLASS 418 / 131
.~ Axially movable end wall or end wall portion

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

104  DF  WITH MECHANICAL SEALING {14}
131.~ Axially movable end wall or end wall portion {4}
132  DF  .~.~> Progressively biased from inlet to outlet
133  DF  .~.~> Surface abutting working member abuts another coplanar cylinder surface portion
134  DF  .~.~> Adjustable end wall
135  DF  .~.~> Spring biased

DEFINITION

Classification: 418/131

(under subclass 104) Apparatus in which the cylinder comprises a side plate or end wall or a portion thereof having a face or surface axially movable into engagement with the adjacent working member side face or surface to oppose the passage of working fluid therepast.