Operating switch of microwave oven and control circuit thereof

Details Operating switch of microwave oven and control circuit thereof Operating switch of microwave oven and control circuit thereof

1994-12-30

1997-03-04

Leung, Philip H.

Electric heating

Microwave heating

With control system

219719, 219720, 200 13, 200 5B, H05B 664

Patent

active

056076118

ABSTRACT:
A microwave oven has a switch mechanism for selecting first and second cooking functions and activating/deactivating a magnetron of the microwave oven. The switch mechanism comprises first and second rotary switches actuable by respective coaxial knobs for generating encoded signals to establish the first and second cooking functions, respectively. One of the knobs can be pushed axially to activate/deactivate the magnetron.

REFERENCES:
patent: 3207861 (1965-09-01), White
patent: 3621158 (1971-11-01), Swinstead
patent: 4028517 (1977-06-01), Tanaka et al.
patent: 4309584 (1982-01-01), Terakami
patent: 4430540 (1984-02-01), Scalf
patent: 4568810 (1986-02-01), Carmean
patent: 4697057 (1987-09-01), Fowler
patent: 5134262 (1992-07-01), Lee
patent: 5349164 (1994-09-01), Ohta
patent: 5363481 (1994-11-01), Tilt

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