Electric cooking range having new safety features

Details Electric cooking range having new safety features Electric cooking range having new safety features

1994-09-14

1996-04-30

Leung, Philip H.

Electric heating

Microwave heating

With control system

219722, 200 5032, H05B 668

Patent

active

055127355

ABSTRACT:
To improve the safety of the interlocking switch circuit comprising a monitor switch, primary switch and secondary switch which are on/off by the opening and closing of the electronic range door in order to control the operation
onoperation of the microwave generation device of the electronic range. The above switches are taken as relay contact points respectively, so as to be able to operate the on/off of each switch from outside. By this, the detection jig is decreased, the detection time period is also shortened and a cause of the safety decreases due to the increase of the efficiency removed. In addition, the switch which turns the on/off of the microwave generation device of the electronic range is adapted to increase the safety of the interlocking switch circuit by being arranged independently.

REFERENCES:
patent: 3739110 (1973-06-01), Constable
patent: 3816688 (1974-06-01), Fritts
patent: 3872277 (1975-03-01), Niu
patent: 4321445 (1982-03-01), Kristof et al.
patent: 4539453 (1985-09-01), Miyazaki et al.
patent: 4556773 (1985-12-01), Yoshiyuki et al.
patent: 5132503 (1992-07-01), Lee

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