F - Mech Eng,Light,Heat,Weapons – 24 – C
Patent
F - Mech Eng,Light,Heat,Weapons
24
C
327/2.51
F24C 7/02 (2006.01) A47J 37/00 (2006.01) G01K 1/02 (2006.01) G01K 5/34 (2006.01) H05B 6/68 (2006.01) H05B 6/80 (2006.01)
Patent
CA 1147399
Abstract of the Disclosure A microwave oven is provided according to which food is cooked while a temperature sensor is inserted in the food and the heating of the food is interrupted in res- ponse to an output signal of the temperature sensor. The temperature sensor comprises a hollow skewer, a bellows which is attached to the skewer and in which is sealed a liquid of high coefficient of thermal expansion, and a mechanical sound generating device for generating and/or terminating generation of a sound when the hollow skewer is heated to a predetermined temperature by the food, the liquid is expanded, the bellows is stretched, and the force generated thereby overcomes the biasing force applied by a spring. The magnetron of the microwave oven is con- trolled in response to detection of the sound generated.
367262
Fukuda Norisuke
Miyazawa Susumu
Ridout & Maybee Llp
Tokyo Shibaura Denki Kabushiki Kaisha
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