FURNACE FOR HEATING GLASS SHEETS

The present invention provides a heater having a heat resistant, thermally and electrically insulating tube having a elongated opening through a wall of the tube and extending along at least a portion of the tube, and a heating element positioned within the tube and extending along at least a portio...

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Bibliographic Details
Main Author KELLY, JOSEPH B
Format Patent
LanguageEnglish
French
Published 12.03.1999
Edition7
Subjects
CHEMISTRY
GLASS
MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
METALLURGY
MINERAL OR SLAG WOOL
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Summary:The present invention provides a heater having a heat resistant, thermally and electrically insulating tube having a elongated opening through a wall of the tube and extending along at least a portion of the tube, and a heating element positioned within the tube and extending along at least a portion of the opening. A first portion of a section of the element extending along the opening is exposed and a second portion of the section of the element extending along the opening is shielded by the tube. In one particular embodiment of the invention, the tube is a cylindrically shaped aluminum oxide tube, the heating element is a nichrome wire coil, and the elongated opening is a slot having a constant width which extends between opposing ends of the tube.
Bibliography:Application Number: CA19982384393