초록 ▼

A cooking utensil for use with an induction range has a first layer including a magnetic metal which is capable of being inductively heated, and a second layer which includes a ply of aluminum and a ply of copper, this second layer being in intimate thermally conducting contact with the first layer

A cooking utensil for use with an induction range has a first layer including a magnetic metal which is capable of being inductively heated, and a second layer which includes a ply of aluminum and a ply of copper, this second layer being in intimate thermally conducting contact with the first layer and being located interiorly of the utensil with respect to the first layer. The first layer may have a ply of carbon steel located between two plies of stainless steel. A disclosed utensil has its bottom and side walls formed of a first layer with an inner ply of inductively heatable magnetic material, and an outer ply of copper or stainless steel; a second layer with a thermally conductive aluminum or copper ply which lies in direct contact with the magnetic material; and, a stainless steel layer at the interior of the utensil. A stainless steel ring encloses the perimetral edge of the utensil wall. To deter corrosion of the carbon steel at the edge of the utensil, the circumferential edge of the utensil has a stainless steel ring which encloses a metal which, in the galvanic series, is sacrificial with respect to the carbon steel.

대표청구항 ▼

A cooking utensil having a wall formed of a plurality of layers of metal, each of said layers being formed of one or more plies of metal, said layers and any plies therewithin being in intimate thermally conducting contact with each other, a first said layer having at least a portion thereof formed

A cooking utensil having a wall formed of a plurality of layers of metal, each of said layers being formed of one or more plies of metal, said layers and any plies therewithin being in intimate thermally conducting contact with each other, a first said layer having at least a portion thereof formed of a magnetic metal which is capable of being inductively heated by placement in a magnetic field, a second said layer located interiorly of the utensil with respect to the first layer, said second layer being in intimate thermally conducting contact with the first layer and having a higher thermal conductivity than said first layer, said second layer including a ply of aluminum and a ply of copper, said wall having an edge to which said magnetic metal extends, said wall also having interior and exterior surfaces, a stainless steel ring covering said edge around the circumference of the cooking utensil, said stainless steel ring enclosing a metal which in the galvanic series is sacrificial with respect to the magnetic metal, said sacrificial metal being in electrical contact with the magnetic metal to deter corrosion of the magnetic metal at said edge.