Patent ID: 6145362
Filing Date: 2000-11-14
Classification: B21H,B21J,B21K

Abstract:
A process for manufacturing a cooking vessel, wherein the vessel is formed from a metal blank, the method comprising:placing the blank on a form face of a lower tool, rotatable around a first axis, wherein the form face of the lower tool is adapted to correspond to an outer surface of the cooking vessel;bringing an upper tool in contact with the blank, the upper tool being rotatable around a second axis, wherein a surface of the upper tool is adapted to correspond to an inner surface of the cooking vessel;rotating the lower tool and the blank along with it, whereby the surface of the upper tool is in linear roll contact with the blank; andforming the blank in a slot between the upper and lower tools by applying a sufficient pressure between the upper and lower tools to give the blank substantially a desired form of the cooking vessel, and then reducing the pressure to finish surfaces of the cooking vessel.