Partially Insulated Cooking Vessel

摘要

A cookware vessel has an upper portion of the surrounding sidewall that is insulated by a cavity to maintain the temperature of the food cooked therein until and during the service of food from the vessel. A highly conductive metal layer, such as a copper layer, extends upward along the inner wall surface adjacent to the inner vessel to spread heat from the bottom of the vessel up the inner sidewall. The copper layer is bonded to the both the inner and outer vessel at the bottom of the vessel and portions of the outer sidewall that would otherwise be overheated by a burner flame and then discolor. In a preferred embodiment, the brazing compound comprises silver to further improve thermal conduction. The copper layer may also extend to the bottom exterior of the vessel to provide an improved means from measuring the temperature of the contents during cooking.

主权项

1. An article of cookware, comprising:
a) a substantially horizontal bottom, b) an inner and an outer sidewall extending substantially upward from and encircling said bottom to form a fluid retaining interior region, c) wherein the inner sides walls terminates at an upper surface to define an interior rim of the cookware article that is capable of holding fluid below the rim, and the outer sidewall flares away form the inner side walls to terminate at an outer rim the extends beyond a periphery of the inner rim, wherein the inner and outer rim are connected by a flange, d) wherein the bottom and a lower portion of the inner sidewall having a clad construction of at least one of conductive metal core laminated between at least two layer of less conductive metal, wherein conductive metal core in the upper portion of the inner sidewall is separated from an outward surrounding layer of less conductive material upward from the position at which the outer sidewall flares away form the inner sidewall, and wherein the conductive metal core then extends to connect and terminate at the inner rim, wherein the flared portion of the outer sidewall, the flange and the conductive metal core at the upper portion of the inner sidewall define the interior bounds of an insulated cavity that us disposed under the flange.