Fluid handling – Inflatable article – With gauge or indicator
Patent
1990-09-28
1991-07-02
Rivell, John
Fluid handling
Inflatable article
With gauge or indicator
731468, 116 34R, B60C 2304, B60C 2900
Patent
active
050278487
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.
REFERENCES:
patent: 1582523 (1926-04-01), Larson et al.
patent: 1755163 (1930-04-01), Pulverman
patent: 3230968 (1966-01-01), Struby
patent: 3650150 (1972-03-01), Eccles, Jr.
patent: 3792677 (1974-02-01), Frost
patent: 3906988 (1975-09-01), Mottram
patent: 4103549 (1978-08-01), Schmidt
patent: 4310014 (1982-01-01), Parker
patent: 4606391 (1986-08-01), Achterholt
Meehan Thomas A.
Rivell John
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