Pressure indicating valve stem
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United States of America Patent
Stats
-
Jul 2, 1991
Issued Date -
N/A
app pub date -
Sep 28, 1990
filing date -
Dec 5, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pressure indicating valve stem for a pneumatic tubeless tire comprises a tubular valve core holder (5), a mounting sleeve (4) in which the core holder is capable of elastically restrained telescopic movement, a clamp nut threaded on said sleeve which in conjunction with an end flange (9) on the sleeve secures it within the valve orifice of a wheel rim, and sealing means comprising an elastomeric generally tubular molding having an annular margin (14) clamped between the end flange and the rim and its other end margin sealed to the inner end of the core holder. The molding has a large diameter undulating walled boot or bellows (19) extending from one said end margin to the other, which provides all of the elastic restraint on the movement of the core holder within the sleeve.
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