US PATENT SUBCLASS 92 / 205
.~.~ Side wall portion positioned between relatively axially adjustable rigid end members

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

172  DF  PISTON {19}
201  DF  .~ Radially adjustable side wall portion {4}
205.~.~ Side wall portion positioned between relatively axially adjustable rigid end members {1}
206  DF  .~.~.~> With beveled abutting surfaces between side wall portion and an end member

DEFINITION

Classification: 92/205

(under subclass 201) Apparatus in which the side wall portion is positioned between and in contact with a pair of rigid axially spaced end members, said end members being capable of being moved and held to different positions toward or away from each other, movement of said end members effecting lateral movement of the side wall portion.