Vacuum actuated tank vapor vent valve
US5014742A · kind A · utility
29Cited by
17References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1990 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Apr 5, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86332
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
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.