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US 5,345,667 AGranted
Process for modifying the characteristics of a metal surface
AssigneeSeb S.A.
InventorMichel Coppier
Life of this patent
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AssigneeSeb S.A.
InventorMichel Coppier
Estimating the term…
The invention relates to a process for modifying the characteristics of a metal (2) surface (1), by application to the surface (1) of a perforated sheet (3) of another metal (4), the perforated sheet (3) having to be secured onto the surface (1) by die stamping. According to the invention the perforated sheet (3) is shaped so that each perforation (6) has a lip (5) and a lip end (7); the sheet (3) thus shaped is applied to the surface (1), the lips (5) of the perforations (6) forming protuberances directed towards the surface (1); the shaped sheet (3) is crimped by die stamping onto the surface (1), the straightening of the lips (5) and of the lip ends (7) which is associated with the flow of material (2) of the surface (1) into the perforations (6) producing a reliable anchorage of the sheet on the surface.
A process for modifying a flat metal surface by application to said surface of a perforated metal sheet of another metal, said process comprising the following steps:
Dependencies are inferred from the claim text.