Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1988-01-12
1989-09-19
Walberg, Teresa J.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
219449, 219465, H05B 374
Patent
active
048683710
ABSTRACT:
A heating assembly is disclosed in which infra-red energy generated by one or more tungsten halogen lamps is transmitted through a glass ceramic layer covering the lamp or lamps. The operating temperature of the glass ceramic layer is monitored by a thermal limiter in the form of a rod of thermally expansive material which, upon expansion by a predetermined amount, actuates a cut-out switch which de-energizes the lamp or lamps. The rod is shielded from incident energy from the lamp or lamps to render it primarily responsive to the operating temperature of the glass ceramic layer.
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Extract from advertising literature for Microtherm.
Extract from advertising literature by Corning, 77210 Fontainebleau, Avon, France.
"Drying Products Made Easy", Nalco, Oct. 1943.
"Facts About Modern Infrared and its Advantages to Food Processors", Fostoria, Apr. 1961.
Crossley Peter W.
Fellerman Bernard F.
Goodchild Graham H.
Thorn Emi Patents Limited
Walberg Teresa J.
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