Electric heating – Metal heating – Of cylinders
Patent
1987-03-24
1989-07-18
Macon, Robert S.
Electric heating
Metal heating
Of cylinders
219 1055F, 132229, H05B 664
Patent
active
048495930
ABSTRACT:
A heating element for retaining heat applied by reaction with high-frequency microwave radiation is provided in various forms. In one form, the heating element includes a multi-layered cartridge having a center core for dissipating heat, a layer of material reactive to microwave radiation for retaining heat and an outer layer of paper for substantially sealing the cartridge, yet permitting heat to radiate in use from the cartridge. In another form, the heating element has multiple layers formed of a rubber and cellular material for retaining water, the multiple layers being disposed about a central core of wax material. In a still further form, the heating element may comprise clay disposed within a covering, the clay containing minerals or aromatics, depending upon its use. In all such heating elements, the materials comprising the elements are reactive to high-frequency microwave radiation to retain heat and radiate such retained heat upon application for their intended purposes.
REFERENCES:
patent: 4538630 (1985-01-01), Henderson
patent: 4743726 (1988-05-01), Hughes et al.
Hughes Thomas E.
Seals Calvin L.
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