US PATENT SUBCLASS 92 / 258
.~.~.~ Rigid members connected by coaxial rigid stem or rod


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

172  DF  PISTON {19}
255  DF  .~ Plural separable parts {3}
257  DF  .~.~ Side wall portion interposed between separable axially spaced rigid members {1}
258.~.~.~ Rigid members connected by coaxial rigid stem or rod


DEFINITION

Classification: 92/258

(under subclass 257) Apparatus in which the means for

detachably securing the members together comprises a rigid elongated stem or rod, the axis of which coincides with the axis of the members.