Metal laminate gasket
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United States of America Patent
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Jan 1, 2013
Grant Date -
Sep 9, 2010
app pub date -
Mar 1, 2010
filing date -
Mar 3, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A metal laminate gasket includes a plurality of metal plates including a first metal plate having a first hole to be sealed and a bead around the first hole, and a second metal plate laminated under the first metal plate and having a second hole corresponding to the first hole. Concavities and convexities are formed at the second metal plate concentrically around the second hole for increasing an apparent plate thickness of the second metal plate. The concavities and convexities are provided continuously at a position corresponding to the foot portion or the top portion of the bead of the first metal plate. The concavities and convexities have a height and width smaller than those of the bead, and have a deformation characteristic due to a surface pressure when compressed, smaller than that of the bead.
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