Safety tire valve
US5365967A · kind A · utility
41Cited by
28References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1993 |
| Grant date | Nov 22, 1994 |
| Priority date | — |
| Expiry date | Nov 3, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8359
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tire pressure indicator which includes a valve stem over-pressure indicator and a valve stem cap under-pressure indicator. The valve stem includes an air porting scheme that releases over-inflation air for escape through a whistling reed configuration. The valve stem cap includes a top translucent panel for coaction with a diaphragm spring contained therebelow. Normal tire pressure distends the diaphragm spring to an upward convex attitude in contact with the underside of the translucent panel to project a visual indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.