Zigzag heating device with downward directed connecting portions

Details Zigzag heating device with downward directed connecting portions Zigzag heating device with downward directed connecting portions

1996-02-12

1997-09-23

Walberg, Teresa J.

Electric resistance heating devices

Heating devices

Radiant heater

392434, 219465, 338280, A21B 200, H05B 368, H01L 300

Patent

active

056713231

ABSTRACT:
A heating device has a plurality of strip heating portions separated by a plurality of slits. The strip heating portions are connected to one another by connecting portions, thereby forming a heating surface in which a zigzag current path extends. The connecting portions in which uneven-temperature regions exist are bent so as not to be positioned in the same plane as the heating surface, thereby making the heating surface, to be opposed to an object to be heated, to have a uniform temperature.

REFERENCES:
patent: 497795 (1893-05-01), Jenkins
patent: 2042233 (1936-05-01), Lockwood
patent: 3573429 (1971-04-01), Brodbeck et al.
patent: 4410796 (1983-10-01), Wilsey
patent: 4503319 (1985-03-01), Moritoki et al.
patent: 4748315 (1988-05-01), Takahashi et al.

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