Electric resistance heating devices – Heating devices – Radiant heater
Reexamination Certificate
2011-01-18
2011-01-18
Campbell, Thor S (Department: 3742)
Electric resistance heating devices
Heating devices
Radiant heater
C313S025000, C313S297000, C313S620000, C313S621000
Reexamination Certificate
active
07873265
ABSTRACT:
A filament lamp comprising a bulb which has a hermetically sealed portion on at least one end and multiple filament assemblies, each filament assembly comprising a coiled filament and connected leads to supply power to that filament, the filament assemblies being sequentially arranged in the axial direction of the bulb, the leads of each filament assembly being electrically connected to respective multiple conductive parts set in the sealed portions, and power being independently suppliable to each of the filaments. A respective one of the coiled filaments is located in a respective first quadrant formed by intersecting planes that are perpendicular to each other and that are tangent to an outer coil diameter of the respective coiled filament. The leads are positioned in quadrants other than the quadrant in which the coiled filament is located. A light irradiation type heat treatment apparatus uses a plurality of such filament lamps.
REFERENCES:
patent: 6876816 (2005-04-01), Shigeoka et al.
patent: 2006/0197454 (2006-09-01), Mizukawa et al.
patent: 100 24 709 (2001-11-01), None
patent: 0 089 176 (1983-09-01), None
patent: 0 222 553 (1987-05-01), None
patent: 1 699 071 (2006-09-01), None
patent: 4-329253 (1992-11-01), None
patent: 7-37833 (1995-02-01), None
patent: 7-16353 (1995-03-01), None
Kitagawa Tetsuya
Mizukawa Yoichi
Suzuki Shinji
Campbell Thor S
Roberts Mitokowski Safran & Cole, P.C.
Safran David S.
Ushiodenki Kabushiki Kaisha
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