Electric hot plate with direct contact P.T.C. sensor

Details Electric hot plate with direct contact P.T.C. sensor Electric hot plate with direct contact P.T.C. sensor

1993-08-23

1995-03-14

Reynolds, Bruce A.

Electric heating

Heating devices

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

219449, 219458, 219464, H05B 374

Patent

active

053978730

ABSTRACT:
Electrical heating apparatus (10) is used in an electric stove (R) having a glass/ceramic cooking surface (S). A pan (12) is mounted adjacent an underside of the cooking surface. An electrical heating element (20) installed in the pan heats a defined area (A) of the cooking surface when electrical current is applied to the element. A sensor (34) installed in direct contact with the cooking surface senses the temperature of the cooking area. A control unit (42), to which an output of the sensor is supplied, is responsive to the output to control current flow to the heating element. This allows the apparatus to respond to temperature changes at the cooking area to insure food is properly cooked.

REFERENCES:
patent: 3710076 (1973-01-01), Frazier
patent: 3953711 (1976-04-01), Eck et al.
patent: 4243874 (1981-01-01), Fischer
patent: 4286377 (1981-09-01), Hurko et al.
patent: 4394564 (1983-07-01), Dills
patent: 4611112 (1986-09-01), Schreder
patent: 4645911 (1987-02-01), Husslein
patent: 4740664 (1988-04-01), Payne et al.
patent: 4960978 (1990-10-01), Lorenz et al.
patent: 5113170 (1992-12-01), Goessler et al.
patent: 5223697 (1993-06-01), Wilde et al.
patent: 5227610 (1993-07-01), Schultheis et al.

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