Fuel tank venting control assembly
US5518018A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 1994 |
| Grant date | May 21, 1996 |
| Priority date | — |
| Expiry date | Nov 14, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86324
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fuel vapor control valve is provided for controlling the flow of fuel vapor and liquid fuel through an aperture in a fuel tank. The fuel vapor control valve includes a housing mounted in the aperture. The housing is formed to include an inlet in fluid communication with the fuel tank and an outlet. A valve is movable in the housing between a blocking position blocking flow of fuel vapor between the inlet and the outlet and a venting position allowing flow of fuel vapor between the inlet and the outlet. The fuel vapor control valve also includes a spring for biasing the valve toward its blocking position and a mechanism for using fuel vapor from the fuel tank to move the valve toward its venting position. A ball is movably positioned in the venting control chamber to selectively interrupt the fluid communication between the inlet and the outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.