Seal for fuel filler tubes
US6619343B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Dec 21, 2001 |
| Grant date | Sep 16, 2003 |
| Priority date | — |
| Expiry date | Dec 21, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2015/03447
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A fuel tank filler neck assembly includes a resilient seal interposed between a flanged opening in the fuel tank and a filler pipe. The seal is preferably molded or otherwise manufactured from an elastomer, which provides an effective barrier to the permeation of fuel vapors. The seal has a plurality of ribs that assist in bore retention as the filler pipe is inserted through the flanged opening. An alternative embodiment includes a ribbed resilient seal with a metal insert contained within an elastomeric matrix. The metal insert aids in the alignment and installation of the seal. In all embodiments, the seal provides a resilient and secure leak tight joint for use in metallic and polymeric fuel tanks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.