Metallic flat gasket

F - Mech Eng,Light,Heat,Weapons – 16 – J

Patent

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Details

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

Patent

CA 2683849

The invention relates to a metallic flat gasket comprising two or more metallic gasket layers (2, 3, 3', 3"), of which a shortened gasket layer (2) has a smaller surface area than the at least one other gasket layer. At least one through-opening (4) extending through the gasket layers is surrounded by a self-contained bead (5) which is introduced into one of the relatively extensive gasket layers (3), the shortened gasket layer (2) leaving free an outer edge region (6), which does not comprise the bead (5), of the relatively extensive gasket layer. At least one structuring (7) is present in one of the gasket layers, in a region of the gasket in which the shortened gasket layer (2) is present or directly laterally adjoining this region adjacent to the position of the bead (5), said structuring protruding beyond at least one surface of the gasket layer and consisting of a large number of alternating elevations (31) and depressions (32) which are introduced into the gasket layer, the structuring (7) being present at least in certain portions in the circumferential direction around the through-opening (4).

L'invention concerne un joint statique plat métallique qui comprend deux ou plusieurs couches de joint statique métallique (2, 3, 3', 3'), parmi lesquelles une couche de joint statique raccourcie (2) a une surface plus petite que la ou les autres couches de joint statique. Au moins une ouverture traversante (4) s'étendant à travers les couches de joint statique est entourée par un bourrelet auto-contenu (5) qui est introduit dans l'une des couches de joint statique relativement extensives (3), la couche de joint statique raccourcie (2) laissant libre une région de bord externe (6), qui ne comprend pas le bourrelet (5), de la couche de joint statique relativement extensive. Au moins une structure (7) est présente dans l'une des couches de joint statique, dans une région du joint statique dans laquelle la couche de joint statique raccourcie (2) est présente ou adjacente directement et latéralement à cette région adjacente à la position du bourrelet (5), ladite structure faisant saillie au-delà d'au moins une surface de la couche de joint statique et consistant en un grand nombre d'élévations (31) et de creux (32) alternés qui sont introduits dans la couche de joint statique, la structure (7) étant présente au moins dans certaines parties dans la direction périphérique autour de l'ouverture traversante (4).

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