US PATENT SUBCLASS 92 / 219
.~.~.~ Interconnected without separate fastening means

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

172  DF  PISTON {19}
208  DF  .~ Open-ended hollow skirt type (e.g., trunk type) {15}
216  DF  .~.~ Plural separable parts {3}
219.~.~.~ Interconnected without separate fastening means

DEFINITION

Classification: 92/219

(under subclass 216) Apparatus in which separable parts of the piston are so interfitted or related as to remain joined in operative relation to one another without the addition of a connecting or fastening member which is intended to be entirely detached from the parts when the parts are disconnected.