Seal for fuel filler tubes
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United States of America Patent
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-
Sep 16, 2003
Grant Date -
Jul 25, 2002
app pub date -
Dec 21, 2001
filing date -
Dec 21, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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