Metal gasket having bead with inclined end portion
AssigneeIshikawa Gasket Co., Ltd.
InventorTsunekazu Udagawa
Life of this patent
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Abstract
A metal gasket of the invention is used for an internal combustion engine. The gasket is formed of at least one metal plate for constituting the metal gasket. The gasket includes at least one bolt hole, and a bead having a main portion extending toward the bolt hole and an end portion located near the bolt hole. The end portion extending from the main portion changes a direction to incline in a direction away from the bolt hole. Accordingly, the end portion can be easily compressed when a bolt passing through the bolt hole is tightened. The plate with the bead may be combined with other plates to form a metal laminate gasket.
Claims8
A metal gasket for an internal combustion engine comprising,
- a metal plate for constituting the metal gasket including at least one bolt hole;
- a bore situated near the at least one bolt hole;
- a first bead extending around the bore while the first bead is interrupted near the bolt hole, said first bead having a main portion extending toward the bolt hole and at least two end portions located near the bolt hole, each of said end portions which extend from the main portion changing a direction to incline toward the bore so that the end portion can be easily compressed when a bolt passing through the bolt hole is tightened;
- and a second bead completely surrounding said bore inside said first bead.
A metal gasket for an internal combustion engine comprising,
- a metal plate for constituting the metal gasket including at least one bolt hole;
- a bore situated near the at least one bolt hole;
- and a first bead extending around the bore while the first bead is interrupted near the bolt hole, said first bead having a main portion extending toward the bolt hole and at least two end portions located near the bolt hole, each of said end portions which extend from the main portion changing a direction to incline toward the bore so that the end portion can be easily compressed when a bolt passing through the bolt hole is tightened;
- and
- an additional metal plate disposed under the metal plate to constitute a metal laminate gasket and including at least one bolt hole and a bore corresponding to those of the metal plate, said additional metal plate having a second bead completely surrounding the bores thereof, said second bead being located inside said first bead formed on the metal plate.
Dependencies are inferred from the claim text.