US PATENT SUBCLASS 92 / 109
PISTON WITH RIGID AXIALLY EXTENDING HOLLOW STEM

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

109PISTON WITH RIGID AXIALLY EXTENDING HOLLOW STEM {2}
110  DF  .~> Hollow stem forms axially extending fluid passage {2}
113  DF  .~> Relatively movable elongated part within stem {1}

DEFINITION

Classification: 92/109

(under the class definition) Apparatus comprising a piston provided with an elongated relatively slender tubular element extending axially therefrom and immovably secured thereto.

SEE OR SEARCH THIS CLASS, SUBCLASS:

108, for a ring shaped piston provided with a rigid axially extending hollow stem.