Vacuum actuated tank vapor vent valve
USRE34518E · kind E · reissue
8Cited by
18References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1992 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Jun 26, 2012 |
Classification
- Technology area (CPC —)General
Abstract
A tank vapor vent valve assembly mounted to the top of the tank wall has a piston actuated by a source of engine vacuum which maintains a fill vapor exit closed until the gas cap is removed to relieve the vacuum and allow the piston to open.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.