# US 5,341,833 A · Tire valve cap

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- Number: US 5,341,833 A
- Document ID: US5341833A
- Status: Granted
- Kind: A
- Application number: 07/921,712
- Filed: 1992-07-30
- Granted: 1994-08-30
- Earliest claimed: 1992-07-30
- Inventors: Don Davis
- Web page: https://patentgrep.com/patent/US5341833A

## CPC

- B60C 29/06: Accessories for tyre-inflating valves, e.g. housings, guards, covers for valve caps, locks, not otherwise provided for {(B60C23/0496 takes precedence; tools for screwing and unscrewing valve caps B25B27/0057; pump connectors F04B33/005)}
- B60C 29/066: {Valve caps}
- F16L 55/1108: {fixed by screwing or by means of a screw-threaded ring}
- Y10T 137/374: With cap
- B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A tire valve cap for a flush mounted tire valve seals the tire valve against external debris and internal leakage. Slits in the wall of the cap allow the cap to act like a spring after insertion and to permit any internal leakage to intensify the sealing properties of the cap to the valve.

## Claims

### Claim 1

A valve cap for use in a flush mounted valve which has been mounted in a wheel rim adapted for mounting a tubeless tire comprising:
a) a partially hollowed, externally threaded body adapted for insertion into an internally threaded opening in said flush mounted valve including thin tapering walls provided with a number of slits to produce a collet-like spring action when the cap is inserted;
b) sealing means in said body;
c) a solid head at one end of said threaded body shaped to facilitate tightening of said cap after insertion in the flush mounted valve whereby said cap serves to close off said opening in the valve against any externally encountered debris and also seals the valve against internally occurring leakage said leakage serving to increase said spring action and intensify the sealing properties of the thread to thread contact between the cap and the inside of the valve.