Patent ID: 7131649
Filing Date: 2006-11-07
Classification: F02F,F16J

Abstract:
1. A metal gasket having a hole to be sealed, comprising: a first metal base plate having a first main bead projecting outwardly therefrom around the hole, a first outer sub-bead section smaller than the first main bead and provided outside the first main bead adjacent thereto, and a first inner sub-bead section smaller than the first main bead and provided inside the first main bead adjacent thereto, said first outer and inner sub-bead sections projecting outwardly in a direction opposite to the first main bead, and a second metal base plate laminated with the first metal base plate and having a second main bead disposed at a side opposite to the first main bead to directly face thereto and projecting outwardly around the hole in a direction opposite to the first main bead, a second outer sub-bead section smaller than the second main bead and provided outside the second main bead adjacent thereto, and a second inner subbead section smaller than the second main bead and provided inside the second main bead adjacent thereto, said second outer and inner sub-bead sections projecting outwardly in a direction opposite to the second main bead, a distance between the second outer and inner sub-bead sections being greater than that between the first outer and inner sub-bead sections so that when the first and second metal base plates are assembled, outer surfaces of the second outer and inner sub-bead sections face outer surfaces of the first outer and inner sub-bead sections and entirely sandwich the first outer and inner sub-bead sections therebetween to substantially abut against each other at side peripheries thereof.