Electric heating – Metal heating – Of cylinders
Patent
1975-08-13
1977-03-22
Grimley, Arthur T.
Electric heating
Metal heating
Of cylinders
H05B 906
Patent
active
040138615
ABSTRACT:
The present invention is a device for sealing the door of a self-cleaning combination thermal and microwave oven from microwave energy leakage. The invented device provides in combination a wavelength choke, a conductive gasket and a microwave absorber. The choke and gasket suppress the ISM band radiation and most of the out of band radiation while the microwave absorber suppresses the balance of the out of band radiation which may result by improper door closure. The combination is particularly useful in combination microwave and thermal self-cleaning ovens where high temperatures cause expansion and stress not normally encountered in microwave ovens.
REFERENCES:
patent: 2958754 (1960-11-01), Hahn
patent: 3431348 (1969-03-01), Nellis et al.
patent: 3629537 (1971-12-01), Haagensen
patent: 3809843 (1974-05-01), Takayama
patent: 3812316 (1974-05-01), Milburn
patent: 3835283 (1974-09-01), Suzuki
patent: 3846608 (1974-11-01), Valles
patent: 3985993 (1976-10-01), Imberg et al.
How Amana Keeps Oven Leakage To A Microtrickle, Appliance Manufacturer, Sept. 1970, pp. 76-78.
TDK Ferrite Absorber, TDK Electronics Co. Ltd. Rec'd PTO Aug. 3, 1971.
Grimley Arthur T.
Mangrum Dennis L.
The Frymaster Corporation
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