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US 4,347,722 AGranted
Method of making a cooking vessel which has surface ornamentation
OwnerJohn B. Ulaminventor
Life of this patent
Estimating the term…
Abstract
A metal sheet is deformed to produce a blank which has one side which is smooth and another side which is ornamented with a pattern of raised and/or depressed areas. The blank is deformed to produce a cooking vessel which has the ornamented side located on its exterior surface.
Claims6
A method of making a cooking vessel which has surface ornamentation, comprising the steps of:
- deforming a metal sheet to produce a blank which has one side which has an ornamental pattern formed of areas which are raised or depressed from the principal surface of said one side,
- deforming the blank to form therefrom a vessel which has interior and exterior surfaces, said step of deforming the blank being performed by engaging one side of the blank with a forming die and exerting fluid pressure on the opposite side of the blank which has the ornamental pattern with raised or depressed areas, said fluid pressure being sufficient to cause said blank to deform by conforming to the surface of said forming die, said deforming step being performed so that the side of the blank which has the ornamental pattern is located on the exterior surface of the vessel.
Dependencies are inferred from the claim text.