US PATENT SUBCLASS 92 / 250
.~.~.~ Flexible side wall portion between separable axially spaced rigid members

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

172  DF  PISTON {19}
248  DF  .~ Nonmetallic portion {1}
249  DF  .~.~ Flexible {3}
250.~.~.~ Flexible side wall portion between separable axially spaced rigid members {1}
251  DF  .~.~.~.~> Wall portion comprises plural axially aligned flexible elements {1}

DEFINITION

Classification: 92/250

(under subclass 249) Apparatus in which the pliable nonmetallic portion forms a side wall portion and is interposed between a pair of axially spaced relatively axially movable separate rigid elements.