Electric heater for thermal treatment furnace
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United States of America Patent
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-
Feb 21, 2006
Grant Date -
Mar 31, 2005
app pub date -
Mar 19, 2002
filing date -
Mar 19, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A heating element (12) made of metal wire is installed at an internal circumferential surface of a cylindrical main thermal insulation body (11) of an electric heater according to the present invention. The heating element (12) comprises a plurality of resistance heat emitting portions (61)-(64) (71)-(74) (81)-(84) as segments along its length direction. The resistance heat emitting portions (61)-(64) (71)-(74) (81)-(84) are connected in parallel.
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Cited Art Landscape
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