Patent ID: 6575473
Filing Date: 2003-06-10
Classification: F16J

Abstract:
In a metallic gasket adapted to be disposed between mating surfaces of engine components, which is composed of a metallic sheet made with a hole and a recess surrounding around the hole, and an elastic sealing member installed in the recess:the improvement characterized in that: the recess is defined by a bottom surface and side surfaces merging toward the bottom surface with any one major side of the metallic sheet, the bottom surface of the recess made on the metallic sheet extends entirely around the hole without opening to any opposite side of the metallic sheet throughout the bottom surface while the side surfaces extend entirely around the hole so that the recess is made uniform in cross section throughout around the hole: the elastic sealing member, when free of tightening force, is constructed with a bottom covering entirely the bottom surface of the recess and partially the side surfaces of the recess, a top extending above the major side of the metallic sheet, and slopes extending between the top and the bottom: the elastic sealing member is smaller than the recess in a cross section perpendicular to the major side of the metallic sheet: and the elastic sealing member, when tightened, experiences an elastic deformation, a maximum amount of which is limited within an area of the recess.