US PATENT SUBCLASS 92 / 105
.~.~ Coaxial radially spaced relatively movable undistortable members joined by flexible wall

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

89  DF  COLLAPSIBLE CHAMBER WALL PORTION (E.G., HINGED OR FLEXIBLE WALL) {1}
90  DF  .~ Wall portion formed of flexible material {5}
105.~.~ Coaxial radially spaced relatively movable undistortable members joined by flexible wall

DEFINITION

Classification: 92/105

(under subclass 90) Apparatus comprising a rigid tubular member, a second rigid member movable relative to said tubular member positioned within said tubular member with the axis thereof coinciding with the axis of said tubular member, said members being laterally spaced from each other defining a ring shaped space therebetween, the flexible wall portion spanning said space for the full peripheral extent thereof and being sealingly secured to said two members.

SEE OR SEARCH THIS CLASS, SUBCLASS:

93, for a ring shaped flexible wall portion joining a pair of relatively fixed rigid concentric members.

99+, for a diaphragm type flexible wall portion joining a pair of relatively movable rigid concentric members.