Electric tubular heating element prodn. - including dia. reduction of both tube ends for partial compacting of filled insulating substance

The tubular heating element is made by locating the resistance heating wire with two end bolts, forming connection terminals centrally inside a tube. Insulating granules are then packed inside the tube and the ends closed to keep the granules in the tube during subsequent processing. The ends of the...

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Bibliographic Details
Main Author EDINGER,EGON
Format Patent
LanguageEnglish
German
Published 28.09.1978
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:The tubular heating element is made by locating the resistance heating wire with two end bolts, forming connection terminals centrally inside a tube. Insulating granules are then packed inside the tube and the ends closed to keep the granules in the tube during subsequent processing. The ends of the tube are reduced in diameter to partially compact the granules. The diameter is reduced using a multi-jaw chuck. The compacting may start straight at the end, or at a certain distance from it.
Bibliography:Application Number: DE19772712802