Fuel tank venting valve
US4561559A · kind A · utility
16Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1984 |
| Grant date | Dec 31, 1985 |
| Priority date | — |
| Expiry date | Nov 7, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7776
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fuel tank venting valve includes a housing defining a cylindrical chamber having a first plunger slidably mounted therein, and a spring biasing the first plunger in a closed position. The first plunger itself defining a cylindrical chamber having a second plunger slidably mounted therein, and a spring biasing the second plunger in a closed position opposite to the closed position of the first plunger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.