Ardal Og Sunndal Verk A.s.

A/s Ardal Og Sunndal Verk

Svein Eide

A cooking vessel suitable for being heated by an induction heat source includes a base of austenitic stainless steel. A heat distributing layer is bonded to the exterior of the base, the heat distributing layer being formed of a metal having a high thermal conductivity. A magnetizable layer is connected to the exterior of the heat distributing layer. At least two intermediate layers are provided between and connect the magnetizable layer and the heat distributing layer. Each of the intermediate layers is formed of a material having a coefficient of thermal expansion value between the values of the coefficients of thermal expansion of the materials of the heat distributing layer and the magnetizable layer.

Stainless steel cooking vessel suitable for all types of heat sources

A three-layer metal laminate consists of only two different metals with different coefficients of thermal expansion. The two outer layers consist of the same metal, yet of different thicknesses so that, on heating the metal laminate there arises a cotrolled bimetal effect which is utilized in thin-based vessels for hot food, to maintain the base flat on being heated.

Three-layer metal laminate with bimetallic effect, and the application

An electric hotplate with a thermostat includes a heating plate which is joined to the surrounding cold zones by means of a bridge of relatively thin sheet metal. The actuating device for a thermostatic switch is operated by the vertical movement of the heating plate. This movement arises as a consequence of the horizontal expansions and contractions of the heating plate due to changes in temperature, such movements being converted, by means of the bridge, which acts as a hinge, to vertical movements.

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Sandved, Norway

Svein Eide