Patent ID: 6554286
Filing Date: 2003-04-29
Classification: F16J

Abstract:
A metal gasket assembly comprising a metal base plate, and a metal reinforcement plate having a thickness smaller than that of the base plate and lapped with the base plate,said base plate having a cylinder opening formed at a position corresponding to a cylinder bore in a cylinder block of an internal combustion engine, an annular bead formed around said cylinder opening and having a V-shaped cross section projecting from a projection side of said base plate, a plurality of coolant holes formed outside said annular bead, and an outer peripheral bead entirely surrounding said annular bead and said plurality of coolant holes, and having a cross-sectional shape of slope, and said reinforcement plate comprising fold-over parts folded around the edge parts of said cylinder opening in said base plate, toward said projection side, and extending inward of the annular bead so as to form grommets embracing the edge parts of said cylinder opening, said fold-over parts including parts extending from the edge parts of the cylinder opening to positions outside of said annular bead but inside of said coolant holes and entirely inside of said slope, on the side of the depression of the annular bead, and having a reinforcement bead projected in a direction the same as that of the direction of the projection of the annular bead and in close contact with the annular bead.