Microwave oven having an electromagnetic energy seal

Details Microwave oven having an electromagnetic energy seal Microwave oven having an electromagnetic energy seal

1986-03-25

1987-04-21

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

174 35MS, H05B 676

Patent

active

046598910

ABSTRACT:
An electromagnetic energy seal for use in a microwave oven comprises a first sealing cavity formed along at least one of a peripheral edge portion of an entrance opening of a heating chamber and a portion of a door for opening and closing the entrance opening of the heating chamber which is opposite to the peripheral edge portion of the entrance opening of the heating chamber, and a second sealing cavity disposed in the opening of the first sealing cavity. These first and second sealing cavities have a simple structure which produces high shield effects against the fundamental microwave frequency and the higher harmonic microwave frequency components thereof, respectively, and the adjustment and optimization of the choking frequency characteristics of the cavities can be made easy.

REFERENCES:
patent: 4475023 (1984-10-01), Iwabuchi et al.
patent: 4523069 (1985-06-01), Staats
patent: 4525614 (1985-06-01), Ishino et al.
patent: 4584447 (1986-04-01), Kusonoki et al.

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