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US 7,000,924 B2Granted
Flat gasket and method for the production thereof
AssigneeDana Corporation
InventorsKurt Höhe, Armin Gütermann, Günther Unseld, Georg Egloff
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Abstract
The invention relates to a flat gasket comprising at least one metallic layer, in which at least one continuous opening is made, whereby the or at least one metallic layer (1) is provided, at least in areas, in the shape of an undulated and/or serrated profiling (2) around the continuous opening(s).
Claims30
A gasket comprising:
- a metallic layer having a bead formed therein, wherein said bead circumvents a port;
- at least one metallic layer having an upper surface and a lower surface, wherein said at least one metallic layer includes at least one region of undulating profiling around said port radially adjacent to said bead to form a deformation limiter for said bead, wherein said deformation limiter elastically maintains at least a portion of said undulating profiling when the gasket is installed, said region of undulating profiling including a crest, a trough and at least one transition between said crest and said trough and wherein said crest is a portion of one of said surfaces, said trough is a portion of the other of said surfaces, and said transition extends therebetween a shape of said bead being distinct from said undulating profiling;
- and
- wherein said at least one metallic layer further comprises a spring steel or a cold deformable steel that hardens during tempering, and wherein said deformation limiter is not folded over, a shape of said bead being distinct from said undulating profiling.
1 more element
A gasket comprising:
- a metallic layer having a bead formed therein, said bead circumventing a port;
- a first metallic layer, wherein said first metallic layer includes a first region of undulating profiling radially adjacent to said bead around said port to form a deformation limiter for said bead and further comprises a spring steel or a cold deformable steel that hardens during tempering;
- a second metallic layer and a second region of undulating profiling, wherein said second region of undulating profiling of said second metallic layer abuts said undulating profiling of said first metallic layer;
- and
- wherein said deformation limiter elastically maintains at least a portion of said undulating profiling when the gasket is installed, a shape of said bead being distinct from said undulating profiling, said first region and said second region each include a crest, a trough, and at least one transition between said crest and said trough, said crest is a portion of a layer surface and said trough is a portion of an opposing layer surface and said transition extends therebetween.
2 more elements
Dependencies are inferred from the claim text.