Independently powered safety device

Details Independently powered safety device Independently powered safety device

1989-11-09

1991-02-05

Walberg, Teresa J.

Electric heating

Heating devices

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

219506, H05B 368

Patent

active

049907506

ABSTRACT:
An independently powered safety device for use in a cooking device having a heating element and a cooking surface. The safety device includes a pair of lamps, one of which is disposed below the heating element and another which is disposed adjacent the cooking surface. The safety device also includes a temperature probe that is coupled above the heating element. When the cooking device is turned on, the heating element becomes hot and the lamp disposed below the heating element instantly illuminates. The temperature probe senses the heating element's temperature. In response to the heating element reaching a predetermined temperature, the probe enables the lamp adjacent the heating surface to illuminate. That lamp remains illuminated until the cooking device is turned off and the heating element cools. The lamp adjacent the heating surface is independently powered and remains illuminated regardless of whether or not power is provided to the heating element.

REFERENCES:
patent: 1136407 (1915-04-01), Carrigan
patent: 1657103 (1928-01-01), Berger
patent: 2492100 (1949-12-01), Kitson
patent: 2659069 (1953-11-01), Kinsella
patent: 2870316 (1959-01-01), Ferguson
patent: 3494321 (1970-02-01), Moore
patent: 3852728 (1974-12-01), Flagg
patent: 4199754 (1980-04-01), Johnson
patent: 4388520 (1983-06-01), McWilliams
patent: 4794233 (1988-12-01), Goessler
patent: 4812827 (1989-03-01), Scripps

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