CLOSURE SYSTEM ON A FUEL TANK
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United States of America Patent
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Issued Date -
May 22, 2014
app pub date -
Jun 12, 2012
filing date -
Jun 17, 2011
priority date (Note) -
Abandoned
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Abstract
The invention relates to a closure system on a fuel tank (1) comprising an opening (2) in the wall of the fuel tank (1) and a closure cover (6) which covers the opening (2) and clamps at least one elastomer seal (5) between itself and a border of the tank wall enclosing the opening (2), the elastomer seal (5) being formed as a multilobed sealing cord or multilobed sealing ring surrounding the opening (2), in such a way that it forms a number of sealing lips (11) that are spaced apart from one another, at least two spaced-apart sealing lips (11) of the elastomer seal (5) consisting of different materials, one of which is impermeable to hydro carbons and a second is impermeable to alcohol-containing media or alcohol-containing additives.
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