Patent ID: 8109521

Claim:
A metal laminate cylinder head gasket, comprising: a plurality of metal plates laminated together and having cylinder bores arranged in a longitudinal direction of the gasket, and a misalignment preventing portion for preventing misalignment of the laminated metal plates, formed in the metal plates, said misalignment preventing portion comprising: a pair of notches provided in each of the metal plates, said pair of notches facing each other and penetrating each of the metal plates, and a bridging portion provided between the notches in each of the metal plates and bulging in one direction to project from a surface of each of the metal plates, said metal plates being laminated together such that the notches and the bridging portions overlap and closely contact to engage together to thereby prevent displacement of the metal plates, wherein the pair of notches is formed on one side of the longitudinal direction of the cylinder bores such that the bridging portion extends in the longitudinal direction, and wherein the pair of notches is curved outwardly to form a cylindrical arc shape having a width at a middle of the bridging portion greater than a width at two ends of the bridging portion to control development of cracking from ends of the notches.