Cylinder head gasket

US6349945B1 · kind B1 · utility

Assignee

• ElringKlinger AG · DE

Inventors

• Frank Schmucker · Wassertrüdingen, DE
• Peter Schenk · Bärnau, DE

Key dates

• Filing date: Jun 15, 2000
• Grant date: Feb 26, 2002
• Expiry date: Jun 15, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16J2015/0856
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Cylinder head gasket comprising a gasket plate which has at least one metal layer with elastic properties and in which a through opening is formed which is surrounded by a bead-like embossment formed in this metal layer, wherein the bead-like embossment forms an approximately linear, self-contained sealing zone with increased sealing surface pressure when the gasket is fitted and the metal layer is provided with a first coating consisting of a plastic material which has elastic properties on its side forming this sealing zone at least in the area of this sealing zone as well as to both sides of the latter; to improve the sealing capacity of the cylinder head gasket around the said through opening, the metal layer is coated on its side provided with the first coating with a sealing bead closed upon itself, likewise surrounding the through opening and consisting of a plastic material, this bead being arranged on the side of the sealing zone facing away from the through opening as well as at a radial distance from the sealing zone in relation to the through opening, wherein the ridge of the sealing bead is at a greater distance from the metal layer supporting it than the upper side of…