.~ Cup shaped cylinder axially movable to abut cylinder side
DEFINITION
Classification: 418/130
(under subclass 104) Apparatus in which there is provided an axially movable cylinder member having an annular, axially extending lip portion abutting an adjacent cylinder surface portion to thereby oppose the passage of working fluid therepast, the axially movable cylinder member and the adjacent cylinder surface cooperating to produce a cavity in which a member having a peripheral surface forming part of the working chamber is housed.
