Microwave oven

Details Microwave oven Microwave oven

1992-07-16

1993-12-14

Reynolds, Bruce A.

Electric heating

Metal heating

Of cylinders

219 1055R, 219 1077, 99325, 367139, 363 55, 336180, H05B 668

Patent

active

052705102

ABSTRACT:
A microwave oven includes a magnetron generating microwaves which are irradiated onto food for heating the same, a circuit substrate incorporating an electric circuit for driving and controlling the magnetron, circuit means for generating both an electrical alarming signal and a high-frequency electrical signal, and a sound producer producing an alarming sound regarding a heating operation when supplied with the alarming electrical signal and producing ultrasonic waves for the repelling of insects when supplied with the high-frequency electrical signal.

REFERENCES:
patent: 4439415 (1984-03-01), Hennart et al.
patent: 4518839 (1985-05-01), Taguchi et al.
patent: 4562561 (1985-12-01), Ackley
patent: 4785152 (1988-11-01), Hirata et al.
patent: 4888461 (1989-12-01), Takano et al.
patent: 4920246 (1990-04-01), Aoki
patent: 4999818 (1991-03-01), Malleolo

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