Natural vacuum leak detection device using diaphragm-seal mechanism
US7856965B2 · kind B2 · utility
3Cited by
6References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 2, 2008 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Aug 14, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7738
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A system and method are provided for detecting a leak in an automotive fuel system. The functions of vacuum sensing, vacuum relief (high vacuum relief level) and pressure relief (high pressure relief level) are all performed by a single self-actuated diaphragm-seal valve mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.