Device for controlling or limiting temperature in an electric co

Details Device for controlling or limiting temperature in an electric co Device for controlling or limiting temperature in an electric co

1993-01-05

1994-05-10

Reynolds, Bruce A.

Electric heating

Heating devices

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

219464, 337394, H01H 3748

Patent

active

053109937

ABSTRACT:
A device for controlling or limiting temperature in an electric cooking appliance includes a switch and a temperature sensor operatively coupled to the switch. The temperature sensor takes the form of a rod arranged substantially coaxially within a tube. The rod is made of a material having a first coefficient of thermal expansion and the tube is made of at least two tube portions, one of the tube portions being made from a material having a second coefficient of thermal expansion lower than the first coefficient of thermal expansion and another of the tube portions being made from a ceramic material having a third coefficient of thermal expansion intermediate the first and second coefficients of thermal expansion. The temperature controlling or limiting device may be incorporated into a radiant electric heater incorporating at least first and second heating elements defining separate heating areas for the cooking appliance.

REFERENCES:
patent: 2210526 (1940-08-01), Burling
patent: 2705746 (1955-04-01), Strange
patent: 2809523 (1957-10-01), Burling
patent: 4008454 (1977-02-01), Bowling
patent: 4267815 (1981-05-01), Goessler
patent: 4555688 (1985-11-01), Bayer
patent: 4577176 (1986-03-01), Bayer
patent: 4633238 (1986-12-01), Goessler et al.
patent: 4901049 (1990-02-01), Kicherer et al.

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