Electric heating – Metal heating – Of cylinders
Patent
1988-01-26
1989-03-07
Leung, Philip H.
Electric heating
Metal heating
Of cylinders
219 1055D, H05B 680
Patent
active
048108464
ABSTRACT:
The efficiency of a microwave oven of a conventional two-source configuration and energy level is increased by providing the oven with a container for housing a refractory material to be treated. The container is formed of top and bottom walls transparent to microwaves while the sidewalls, in a circular configuration, are formed of a nonmetallic material opaque to microwave radiation reflecting the radiation penetrating the top and bottom walls radially inwardly into the center of the container wherein a casket of heat-insulating material is provided for housing the material to be heat treated. The reflection of the microwave radiation from the sidewalls increases the concentration of the microwaves upon the material being heat treated while the casket retains the heat to permit the heating of the material to a substantially higher temperature than achieveable in the oven without the container.
REFERENCES:
patent: 3585258 (1971-06-01), Levinson
patent: 4140887 (1979-02-01), Sutton et al.
patent: 4221680 (1980-09-01), Hardwick et al.
patent: 4307277 (1981-12-01), Maeda et al.
patent: 4416907 (1983-11-01), Watkins
patent: 4499356 (1985-02-01), Hatagawa
Dykes Norman L.
Holcombe Cressie E.
Kimrey, Jr. Harold D.
Mills James E.
Hamel Stephen D.
Hightower Judson R.
Leung Philip H.
The United States of America as represented by the United States
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