G - Physics – 01 – K
Patent
G - Physics
01
K
340/159, 309/71
G01K 1/02 (2006.01) F24C 15/10 (2006.01) G05D 23/275 (2006.01) H05B 1/02 (2006.01) H05B 3/68 (2006.01) H05B 3/74 (2006.01)
Patent
CA 1198470
ABSTRACT An electric cooker having means for warning the user when one or more of the cooking surfaces is above a safe touching temperature comprises a glass ceramic cooking surface having one or more electrical heaters arranged on the underside of the cooking surface. A temperature monitoring device (30) is thermally coupled with at least one of said one or more heaters and comprises an auxiliary heater (42), for example of PTC material, a thermally responsive device (44) in the form of a thermistor, for example of PTC or NTC material, and a thermal buffer (72) positioned between the auxiliary heater and the thermistor. A neon lamp or a filament lamp (60) is provided for indicating when the thermistor is at or above a predetermined temperature. - 19 -
396446
Kirby Eades Gale Baker
Micropore International Limited
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