At least substantially metallic cylinder head gasket

Details At least substantially metallic cylinder head gasket At least substantially metallic cylinder head gasket

2004-02-06

2009-02-17

Engle, Patricia (Department: 3673)

Seal for a joint or juncture

Seal between fixed parts or static contact against...

Contact seal between parts of internal combustion engine

C277S595000

Reexamination Certificate

active

07490835

ABSTRACT:
Cylinder head gasket with a metallic gasket plate comprising a combustion chamber opening enclosed by a bead, and a stopper surrounding the opening and delimiting deformation of the bead, the stopper formed by elevations of a gasket sheet metal layer which are obtained by deformation thereof, the stopper is designed such that in sections through the sheet metal layer along circular cylindrical surfaces coaxial with the opening the stopper comprises a row of discrete elevations following one another in a circumferential direction of the opening and corresponding depressions located directly opposite these elevations, and in a plan view of the sheet metal layer in the area of the stopper, the total area occupied by the elevations is at least half of the total area of the stopper, and the shape of the elevations differs from the shape of circular arcs at least partially enclosing the opening.

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