Cooking units

Details Cooking units Cooking units

1974-11-04

1976-04-27

Albritton, C. L.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

219465, 219505, 219543, 338 22R, H05B 368

Patent

active

039537110

ABSTRACT:
An electrical cooking unit comprising a cover on which cooking can take place, heating resistors in the form of PTC resistor elements being distributed over the underside of the cover, the PTC resistor elements being made of a PTC resistor material, the resistance of which varies as a step function of temperature, and being distributed over the underside of the cover to provide zones on the cover of varying energy density and/or varying step temperature of the PTC resistors.

REFERENCES:
patent: 2710900 (1955-06-01), Linder
patent: 3067311 (1962-12-01), Lacy-Hulbert
patent: 3375774 (1968-04-01), Fujimura et al.
patent: 3400250 (1968-09-01), Buiting et al.
patent: 3406279 (1968-10-01), Ziver
patent: 3413442 (1968-11-01), Buiting et al.
patent: 3466423 (1969-09-01), Jannings
patent: 3496336 (1970-02-01), Hingorany et al.
patent: 3551644 (1970-12-01), Sano et al.
patent: 3636309 (1972-01-01), Deaton et al.
patent: 3644864 (1972-02-01), Hirsbrunner et al.
Journal of The American Ceramic Society, "Resistivity Anomaly in Doped Barium Titanate," by W. Heywang, pp. 484-490, Oct. 1964, Vol. 47, No. 10.
Siemens-Zeitschrift, "Kaltleiter als Flussigkeitsstandfuhler" 39th Vol., Feb. 1965, part 2, pp. 138-145.

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