F - Mech Eng,Light,Heat,Weapons – 24 – C
Patent
F - Mech Eng,Light,Heat,Weapons
24
C
277/56, 327/2.3
F24C 15/02 (2006.01) H05B 6/76 (2006.01)
Patent
CA 1256948
ABSTRACT OF THE DISCLOSURE 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 having the simple structure produce high shield effects against the fundamental frequency microwave and the higher harmonic microwave components thereof, res- pectively, and the adjustment and optimization of the choking frequency charactersitics of the cavities can be made easy.
505218
Hirose Teruo
Inoue Kazuyuki
Nitta Masahiro
Toda Yoshihiro
Yamaguchi Kimiaki
Marks & Clerk
Matsushita Electric Industrial Co. Limited
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