Abstract: A cover for a cooking vessel with a strengthened edge comprises a central portion having a downwardly depending skirt with an upper portion substantially the same outer diameter as the cooking vessel, a diametrically inwardly offset lower portion having a doubled wall thickness and a substantially horizontal offset portion formed between the upper and lower portions of the skirt. A method of forming a strengthened edge on a cover for a cooking vessel includes flattening an inwardly rolled bead formed on a cut edge of a downwardly depending skirt of a cover blank, the flattening process forming a diametrically inward offset in the lower portion of the downwardly depending skirt and mechanically sealing the cut edge of the skirt to the lower portion of the skirt.

Abstract: A knob for the lid of a cooking vessel. The knob being made of heat sensitive material and having a metal cap covering the portion of the knob that is exposed on the underside of the cooking vessel lid.

Abstract: A cooking pan having an inner shell and an outer shell between which is an oil filled cavity containing a heating element the inner shell being secured to the outer shell by a rolled beaded edge formed in such a manner that the free edges of the respective inner shell and outer shell are not in contact with one another because the outer margin of the inner shell has been pre-beaded, the outer margin of the outer shell has been folded, and the relationship between the two is such that the folded portion is spaced slightly from the pre-beaded portion. The oil filling hole is provided with a circumferential seat against which an O-ring is urged by a cup-shaped plug for the hole backed by a spring and spring retainer held in position by a handle bracket provided with a spring retainer backing plate so that the oil filling hole plug functions also as a relief valve which is completely concealed beneath the handle.