Patent ID: 7703775

Claim:
A metal gasket for a cylinder head, said metal gasket having a lamination of plates and comprising: two base plates ( 2 ) formed of metal plates, each of said base plates comprising cylinder holes ( 2 a ) formed corresponding to cylinder bores in a cylinder block on which a cylinder head for an internal combustion engine is mounted, circumferential beads ( 2 b ) having a both-sided sloped shape in cross section and formed around peripheries of said cylinder holes, cooling water holes ( 2 c ), formed outside peripheries of said circumferential beads corresponding to a cooling water jacket for said cylinder block and cooling water holes in said cylinder head, and an outer bead ( 2 d ) having a one-sided sloped shape in cross section and formed and positioned so as to entirely enclose said circumferential beads and said cooling water holes, wherein said circumferential beads ( 2 b ) of said two base plates ( 2 ) are aligned in the direction of thickness of said metal gasket, and claw-shaped protrusions ( 3 a ) provided for one of an outer step adjustment plate ( 3 ) and an inner step adjustment plate ( 4 ) are inserted into engagement holes in the other of said inner step adjustment plate and said outer step adjustment plate, said outer step adjustment plate ( 3 ) is formed of a metal plate and extending from the position of said cooling water jacket to the positions of the outer edges of said base plates ( 2 ), while said inner step adjustment plate ( 4 ) is formed of a metal plate having a thicker thickness than said outer step adjustment plate ( 3 ) and extending from locations inside said circumferential beads ( 2 b ) of said base plates ( 2 ), to the position of said cooling water jacket, and portions of said claw-shaped protrusions ( 3 a ) projecting through said engagement holes are folded over so as to couple said outer adjustment plate ( 3 ) and said inner step adjustment plate ( 4 ), and thus placing said outer adjustment plate ( 3 ) and said inner step adjustment plate ( 4 ) between said two base plates ( 2 ).