Industrial electric heating furnaces – Resistance furnace device – With heating element detail
Reexamination Certificate
2006-02-21
2006-02-21
Hoang, Tu (Department: 3742)
Industrial electric heating furnaces
Resistance furnace device
With heating element detail
C373S127000
Reexamination Certificate
active
07003014
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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Aitani Takashi
Uemori Susumu
Armstrong, Kratz, Quintos Hanson & Brooks, LLP.
Hoang Tu
Koyo Thermo Systems Co., LTD
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