Microwave oven door control device

Details Microwave oven door control device Microwave oven door control device

1992-12-29

1994-03-08

Leung, Philip H.

Electric heating

Microwave heating

With control system

219739, 126197, H05B 668

Patent

active

052930203

ABSTRACT:
Disclosed is a microwave oven with an automatic door control device. Novel door latching/opening device which uses permanent magnets and electromagnets is provided in place of hook-type door latches and slots on a oven wall. Door state detector is also provided in which the existing permanent magnets and electromagnets rather than a separate mechanical switch are utilized to discriminate the door closed state from the door open state. Further, a processing device is employed to control the operation of the door latching/opening device and microwave energy generator in response to the input signals from the door state detector and the door open switch.

REFERENCES:
patent: 3627959 (1971-12-01), Chapell
patent: 3784776 (1974-01-01), Asanuma
patent: 4309585 (1982-01-01), Doi et al.
patent: 4450335 (1984-05-01), Shimizu et al.
patent: 4461940 (1984-07-01), Ishimura
patent: 4982063 (1991-01-01), Tsunekawa et al.
patent: 5012794 (1991-05-01), Faurel

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