Patent ID: 6986516
Filing Date: 2006-01-17
Classification: F16J

Abstract:
1. A metal gasket for sealing two members, comprising: a first metal plate having a base portion, a hole to be sealed, and a half bead formed around the hole, said half bead having upper and lower shoulder portions providing seal line portions forming sealing surface pressures greater than those of other portions when the first metal plate is tightened, each shoulder portion having a projection with an outer surface and a dent at a side opposite to the projection, and a middle portion between the upper and lower shoulder portions, and seal coatings formed on and around the half bead and having upper coating sections formed on an upper side of the first metal plate and spaced apart from each other at the outer surface of the upper shoulder portion, and lower coating sections formed on a lower side of the first metal plate and spaced apart from each other at the outer surface of the lower shoulder portion so that the outer surfaces of the upper and lower shoulder portions do not have the coatings while the middle portion and the dents of the upper and lower shoulder portions have coatings for reinforcement, wherein a part of the upper coating section deposited in the dent has a thickness greater than thicknesses of the upper coating sections not deposited in the dent, a part of the lower coating section deposited in the dent has a thickness greater than thicknesses of the lower coating sections not deposited in the dent, and the upper and lower coating sections are partially overlapped at the middle portion.