Patent ID: 6997462
Filing Date: 2006-02-14
Classification: F16J

Abstract:
1. A cylinder head gasket comprising: a first metal plate having a base portion, a first hole formed in the base portion, a curved portion extending from the base portion for defining the first hole, a flange extending from the curved portion to be located above the base portion, and a first full bead formed on the base portion and under the flange to surround the first hole, said first full bead forming a primary sealing pressure when the gasket is compressed, and a second metal plate disposed on the base portion at a side of the flange, and having a second hole to receive the flange therein with a gap relative to an outer edge of the flange, and a second full bead protruding in a direction opposite to that of the first full bead to form a secondary sealing pressure when the gasket is compressed, said secondary sealing pressure being less and wider than the primary sealing pressure and formed outside the primary sealing pressure with a reduced pressure portion therebetween formed by the gap, said second metal plate being formed of a material having elasticity greater than that of the first metal plate.