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US 4,356,836 AGranted
Tubeless tire valve stem and cover
OwnerClayton P. Wenger, Clifford A. Reevesinventors
Life of this patent
Estimating the term…
Abstract
A rigid valve stem cover for flexible tubeless tire type valve stems. The cover has a frustro conical shape which threadably engages the valve stem at its upper end while the bottom edge of the cover comes in contact with the stem and wheel rim area surrounding the stem and provides substantial rigidity to the stem.
Claims2
A tubeless tire valve stem and cover including:
- a rubber valve stem with a threaded metal outer end, the inner end of the stem having an enlarged portion with a circumferential groove therein for sealing against the opening in the wheel rim;
- the improvement comprising a rigid valve stem cover having a frustro conical shape with an open bottom edge and a closed top;
- thread means inside the cover, located at the top thereof for receipt of the threaded end of the valve stem, the cover having a height dimensioned so that as the thread means engage the threads of the stem, the bottom edge of the cover is forced against the enlarged portion of the stem in sealing engagement with the stem thereby providing rigidity to the stem.
Dependencies are inferred from the claim text.