Patent ID: 6336639
Filing Date: 2002-01-08
Classification: F16J

Abstract:
A metal gasket comprising at least one carrier plate of an elastic metal plate adapted to be used interposed between a cylinder block and a cylinder head to be fixed to the cylinder block, the carrier plate being provided with a plurality of first bores and a bead developed along each said first bore, and a stopper plate of an elastic metal plate overlaid on the carrier plate, the stopper plate being partially folded back thereby providing annular folded constructions to define a plurality of second bores each being in alignment with an associated first bore of said plurality of first bores,wherein the beads on the carrier plate are overlaid on the stopper plate at areas spaced apart from the folded constructions, said each folded construction composed of a folded flange area and a counterpart area extending along a perimeter of an associated second bore, of said plurality of second bore and the folded constructions each include a gap of a preselected interval between the folded flange area and the counterpart area to provide elasticity at the folded construction continuously whenever the gasket is loaded inclusive of under engine operation, wherein the stopper plate is used in such arrangement that in use the folded flange areas in the folded constructions make contact with the cylinder block whereby the elasticity exerted by the folded flange areas compensates for undue clearances due to any sag occurring in the cylinder block, and wherein the folded constructions of the stopper plate are each regulated in width along circumferences of said associated second bores in such a manner that the folded flange is made narrow for angular zones of about 20Â° with respect to a plane spanning the center of any adjoining second bores, and the folded flange is made wider for other angular zones shifted 90Â° out of the plane, and wherein the folded flange gradually varies in width for other residual zones.