Dual valve tank venting system
US5687778A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 1, 1995 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | May 1, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0874
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A tank venting system includes a first vent apparatus mounted on a top wall of a fuel tank, a second vent apparatus mounted on a raised top wall of a vapor dome on the fuel tank to lie in diagonally spaced-apart relation to the first vent apparatus, a fuel vapor conduit conducting fuel vapor discharged from the first and second vent apparatus to a vapor-recovery canister, and a nozzle shut-off tube having an inlet end extending through an aperture formed in the raised top wall of the vapor dome and an outlet end coupled to a fuel tank filler neck. The inlet end of the nozzle shut-off tube is configured to sense liquid fuel levels in the fuel tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.