Radiation sealed door in a microwave heating apparatus

Electric heating – Metal heating – Of cylinders

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Details

219 1055R, 174 35MS, 174 35GC, H05B 676

Patent

active

048683590

ABSTRACT:
A seal on a door for a microwave oven. The seal is a resonant cavity extending along the flange of the oven. The resonant cavity has an offset inlet facing the flange with a dimension less than 2/3 of the distance to the center of the cavity. The cavity is further interrupted at intervals less than 1/2 of the microwave wavelength. A dielectric cover fills the inlet and has projections into the cavity on either side of the inlet.

REFERENCES:
patent: 4254318 (1981-03-01), Ohkawa et al.
patent: 4475023 (1984-10-01), Iwabuchi et al.
patent: 4523069 (1985-06-01), Staats
patent: 4584447 (1986-04-01), Kusunoki et al.
patent: 4659891 (1987-04-01), Yamaguchi et al.
patent: 4742201 (1988-05-01), Nakano et al.

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