Metallic flat gasket

Details Metallic flat gasket Metallic flat gasket

F - Mech Eng,Light,Heat,Weapons

16

J

F16J 15/08 (2006.01) F02F 11/00 (2006.01)

Patent

CA 2682706

The invention relates to a metallic-flat gasket (1) comprising at least a first and a second gasket layer (2, 3) in which a bead (20) is provided in at least the first gasket layer (2), said bead (20) surrounding in a self-contained manner a through-opening (4) extending through the flat gasket (1). The first gasket layer (2) has a smaller surface area than the second gasket layer (3) and leaves free an edge region (6) adjoining the outer edge (5) of the flat gasket (1). A compensating portion (7) is provided in an edge region (6) of the second gasket layer (3), which compensating portion (7) protrudes at least in the direction of the first gasket layer (2) and has a height which is less than the thickness of the first gasket layer (2). The compensating portion (7) is arranged at least in certain portions along the outer edge (21) of the first gasket layer (2) and consists of a large number of alternating elevations (31) and depressions (32) which are formed in- the second gasket layer (3).

Selon l'invention, un joint plat métallique (1) comprend au moins une première et une seconde couche du joint (2, 3) dont au moins la première (2) comporte un jonc (20) entourant de manière autonome un trou débouchant (4) qui traverse le joint plat (1). La première couche du joint (2) présente une surface active inférieure à celle de la seconde couche du joint (3) et laisse libre une zone de bordure (6) jouxtant le bord périphérique (5) du joint plat (1). Une partie de compensation (7), ménagée dans une zone de bordure (6) de la seconde couche du joint (3), fait saillie au moins dans la direction de la première couche du joint (2) et présente une hauteur inférieure à celle de la première couche du joint (2). La partie de compensation (7) est disposée, au moins dans certaines de ces parties, le long du bord périphérique (21) de la première couche du joint (2), et comprend un grand nombre de bosses (31) et de creux (32) alternés, formés dans la seconde couche du joint (3).

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