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US 5,628,113 AGranted
Metal gasket assembly
AssigneeNippon Leakless Industry Co., Ltd.
InventorsAkira Tanaka, Masamichi Hoshi
Life of this patent
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Abstract
A metal gasket assembly comprises a substrate metal sheet having at least one opening, and a peripheral member fitted into the opening along the periphery thereof. The peripheral member is made of a metal plate having a thickness larger than that of the substrate metal sheet.
Claims5
A method for producing a metal gasket assembly comprising the steps of:
- perforating a substrate metal sheet so that said substrate metal sheet has at least one aperture larger than a desired opening;
- fitting a metal plate member having a thickness larger than that of said substrate metal sheet into said at least one aperture along the periphery thereof and welding them together;
- and
- perforating the welded metal plate member to form said desired opening thereon.
1 more element
Dependencies are inferred from the claim text.