Patent ID: 6076833
Filing Date: 2000-06-20
Classification: F16J

Abstract:
A metal gasket comprising an inner portion including juxtaposed combustion-chamber bore holes and an outer portion including non-bore outer holes, the outer portion including a central opening defined by an inner perimeter of the outer portion,the inner perimeter of the outer portion being complementary in configuration to an outer perimeter of the inner portion;the inner portion comprising a pair of elastic metal plates further including a first inner plate and a second inner plate, the inner portion including bore beads extending around the bore holes for sealing around the bore holes;the outer perimeter including a first outer perimeter of the first inner plate and a second outer perimeter of the second inner plate, the second outer perimeter confronting the first outer perimeter, the outer perimeter being configured substantially along the bore beads surrounding said bore holes;the outer portion comprising a circumferential elastic metal outer plate including outer beads for sealing around the outer holes, the outer plate being sandwiched between the confronting first inner plate and second inner plate to define a narrow overlap area, the overlap area terminating a distance away from the bore beads on the inner plateswherein the bore beads of the first inner plate and the second inner plate confront each other such that raised surfaces of the respective bore beads are opposite one another; andwherein the outer plate is greater in thickness than either of the first inner plate or the second inner plate and is less in thickness than a sum of thicknesses of the first inner plate and the second inner plate.