Fuel fill and vapor venting value unit for fuel tanks
US5687762A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1995 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Sep 21, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86332
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A valved unit to control introduction of liquid fuel and venting of vaporous fuel relative to a vehicle fuel tank which unit is mounted on to the tank wall to effectively seal and isolate the tank downstream from a filler tube and related fuel delivery hoses. Tank closure is normally maintained by a closure spring which is overcome by introduction of fuel into the tank which allows movement of the inlet closure valve from its seated closed position and simultaneously opens an associated vaporous fuel vent control valve. When introduction of fuel is terminated, a spring returns the two valve elements back to their closed and sealed positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.