US PATENT SUBCLASS 92 / 113
.~ Relatively movable elongated part within stem


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

109  DF  PISTON WITH RIGID AXIALLY EXTENDING HOLLOW STEM {2}
113.~ Relatively movable elongated part within stem {1}
114  DF  .~.~> Part and stem relatively axially adjustable {1}


DEFINITION

Classification: 92/113

(under subclass 109) Apparatus including an elongated member which is movable relative to the piston, at least a portion of said member being positioned within the tubular element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

65, for a working member provided with a hollow axially extending hollow rod, and a second working member having a portion thereon adapted to extend axially through said hollow rod and being movable relative thereto.

108, for a ring shaped piston provided with a rigid axially extending hollow stem, in which the stem moves relative to a portion forming the working chamber for the ring shaped piston which portion extends axially through the stem.

SEE OR SEARCH CLASS

91, Motors: Expansible Chamber Type, 378, for a relatively movable valve element positioned within and movable relative to a hollow piston rod.