초록 ▼

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 sl

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.

대표청구항 ▼

A pressure indicating, inflation valve stem for a tubeless pneumatic tire, said valve stem comprising a tubular, rigid, valve core holder, a rigid mounting sleeve in which said holder is capable of elastically restrained telescopic movement, affixture means, which, in use, secure said mounting sleev

A pressure indicating, inflation valve stem for a tubeless pneumatic tire, said valve stem comprising a tubular, rigid, valve core holder, a rigid mounting sleeve in which said holder is capable of elastically restrained telescopic movement, affixture means, which, in use, secure said mounting sleeve within a valve aperture in a wheel rim, and sealing means comprising a static part providing an air-tight seal between said sleeve and the wheel rim and an active part providing a yieldable air-tight connection between said sleeve and an end of said holder protruding from said sleeve; said active part having an outer diameter greater than that of a tip of said holder and providing all of the elastic restraint on said holder, said sleeve having a peripheral sleeve end flange engaging said sealing means between said parts to isolate one from the other and ensure that relative movement between the sleeve and holder is wholly controlled by said active part of the sealing means.