Metal gasket
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United States of America Patent
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-
May 29, 2012
Grant Date -
Jul 23, 2009
app pub date -
Oct 7, 2008
filing date -
Oct 12, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A metal gasket includes at least one structural plate having a sealing bore and bolt holes located around the seal bore. An inner bead is formed on the at least one structural plate to surround the sealing bore. The inner bead has first neighboring portions near the bolt holes and first outer portions outside the first neighboring portions. The first neighboring portion has a compression resistance smaller than that of the first outer portion. An outer bead is formed on the at least one structural plate to surround the inner bead such that the bolt holes are located inside thereof. The outer bead has second neighboring portions near the bolt holes and second outer portions outside the second neighboring portions. The second neighboring portion has a compression resistance greater than that of the second outer portion.
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