US PATENT SUBCLASS 92 / 202
.~.~ Adjustable portion comprises open-ended hollow skirt

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}
202.~.~ Adjustable portion comprises open-ended hollow skirt {1}
203  DF  .~.~.~> Adjustment effected by wedge member movable relative to skirt (207)

DEFINITION

Classification: 92/202

(under subclass 201) Apparatus in which the adjustable portion comprises a hollow tubular skirt-like member secured at one end to the end face portion and extending in a direction opposite from the end face, said skirt-like member being open at one end and being closed at the opposite end by the end face portion.