Patent ID: 6779800
Filing Date: 2004-08-24
Classification: F16J

Abstract:
A head gasket for an internal combustion engine having at least one cylinder bore, bolt holes and at least one liquid hole, comprising:a base plate having at least one first hole corresponding to the at least one cylinder bore, second holes corresponding to the bolt holes and surrounding the at least one first hole, an outer area outside imaginary lines linking the second holes outside the at least one first hole, and at least one third hole corresponding to the at least one liquid hole and located in the outer area, said base plate including a first portion covering at least an area inside the outer area including the first and second holes and being made of a material selected from the group consisting of annealed stainless steel and soft steel, and at least one second portion covering a part of the outer area including only one third hole and being made of spring steel, said second portion projecting outwardly from the first portion and being integrally fixed to the first portion, at least one bead formed on the second portion outside the at least one third hole for sealing the at least one third hole, and a bead integrally formed in the first portion around the at least one first hole for sealing around the at least one first hole.