Dual-function tire inlet valve
US6772812B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2003 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Mar 25, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/36
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A dual-function tire inlet valve mountable on a tire in communication with a compressor in a tire pressure maintenance system is disclosed. The inlet valve has a conduit extending from an ambient air supply to an interior chamber of the tire. A first check valve and a second check valve are positioned within the conduit to define a pump between the first and second check valves. The pump channel is in fluid communication with a compressor in the tire pressure maintenance system. The first check valve opens automatically only when the compressor is active and the tire is rotating about its axis with at least a pre-determined velocity. The second check valve only opens when it is manually actuated. Manually actuating the first check valve opens the second check valve to permit manual adjustment of the tire pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.