Combination filler pipe and vapor control means
US4881578A · kind A · utility
23Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Nov 2, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86332
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A combined filler neck and vapor vent line valve is provided by inner and outer pipes that are maintained in concentric relation by a sleeve tightly inserted between the outer pipe and an out-turned flange at the end of the inner pipe. This provides a convenient path out of the fuel tank for displaced tank vapors. Vapor control is provided by a stepped cylindrical valve body that rides up and down within the upper end of the inner pipe and the sleeve so that a seal on the outside of the valve body can cover and uncover openings in the flange to block and un-block a vapor path to the canister.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.