Patent ID: 6027124
Filing Date: 2000-02-22
Classification: F16J

Abstract:
A metal gasket having a gasket thickness and comprising an elastic metal plate having beads along circumferences of parallel-arranged first combustion chamber holes, and a thin metal plate which has second combustion chamber holes opposed to said first combustion chamber holes, said thin metal plate extending in a predetermined width around said second combustion chamber holes so as to be opposed to valley portions of said beads,wherein said thin metal plate is thinner than said elastic metal plate,wherein said thin metal plate has outwardly projecting locking portions at an outer circumference thereof, said elastic metal plate having slits in first regions thereof which are on an outer side of said beads thereon, said thin metal plate being fixed to said elastic metal plate with said locking portions of said thin metal plate engaged with said slits of said elastic metal plate,wherein said projecting locking portions of said thin metal plate are bent onto the elastic metal plate so as to extend, along said metal plate, radially outwardly from one of the second combustion chamber holes respectively associated therewith,whereby the gasket thickness is kept generally to a sum of a thickness of said elastic metal plate and a thickness of said thin metal plate over areas where said locking portions lie on said elastic metal plate, andwherein said thin metal plate is joined partly to said elastic metal plate by one of spot welding and laser welding in second regions thereof which are on a side of said combustion chamber holes with respect to said beads of said elastic metal plate.