Method of making electric heating unit

Details Method of making electric heating unit Method of making electric heating unit

1976-05-04

1978-02-14

Kendall, Ralph S.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

106 47R, 106 52, 219543, 338292, 338308, 427125, 427243, 427269, 427282, 427376A, 427379, 427380, 428434, 428457, H05B 316

Patent

active

040739708

ABSTRACT:
An electrical cooking or heating unit comprising a plate of a glassy material including a selected portion thereof upon whose upper surface vessels are to be placed for cooking purposes. The lower surface of the selected portion of the plate is provided with at least one sinuous strip of a gold/platinum alloy which integrally forms the electrical resistance heating element for the heating or cooking unit. A porous and partially sintered overglaze or coating covers the heating element and the portion of the lower surface of the plate on which the heating element is provided, such glaze preventing or inhibiting cracking, peeling or agglomeration of the heating element to provide a resultant increase in electrical resistivity. The life of the heating or cooking unit is thereby substantially increased.

REFERENCES:
patent: 3067315 (1962-12-01), Hurko
patent: 3679473 (1972-07-01), Blatchford et al.
patent: 3694627 (1972-09-01), Blatchford et al.
patent: 3787965 (1974-01-01), Cocca et al.
patent: 3974360 (1976-08-01), Panzarino
patent: 3978315 (1976-08-01), Martin et al.

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