Sealing arrangement in a microwave oven

Details Sealing arrangement in a microwave oven Sealing arrangement in a microwave oven

1974-08-29

1976-10-12

Reynolds, Bruce A.

Electric heating

Metal heating

Of cylinders

H05B 906

Patent

active

039859932

ABSTRACT:
A sealing arrangement for microwave ovens comprising a quarter wave choke situated in the door and having an entrance opening into the choke in the rim portions of the door, which consists of a door frame, and a suitably perforated metallic door sheet covering the space inside the frame. According to the invention the door frame comprises an integral piece of conductive material having, in section, a generally U-shaped configuration, forming said quarter wave choke, with the outer leg of the U shorter than the inner leg, the door sheet is situated in a plane with the outer end of the inner leg of the U, where it is electrically connected to the said leg. The metallic door sheet extends beyond the inner leg and beyond the shorter, outer leg of the U so that the entrance opening to the inside of the U, forming the cavity of the quarter wave choke, is constituted by the gap between the outer shorter leg of the U and the extension of the metallic door sheet.

REFERENCES:
patent: 2796457 (1957-06-01), Stinger
patent: 2958754 (1960-11-01), Hahn
patent: 3629537 (1971-12-01), Haageusen
patent: 3668357 (1972-06-01), Kobayashi
patent: 3767884 (1973-10-01), Osepchuk et al.
patent: 3809843 (1974-05-01), Takayama
patent: 3835283 (1974-09-01), Suzuki

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