Resistance element

Details Resistance element Resistance element

1999-03-15

1999-12-07

Speer, Timothy

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428210, 428698, 428701, 428702, 338254, 338255, 174255, 174256, 174257, 174258, 361765, 361766, B32B 900

Patent

active

059979984

ABSTRACT:
Concerning a resistance element comprising a laminated and sintered article of an insulating material substrate layer and a conductor layer formed on or embedded in the insulating material substrate layer, a material which is constituted of tungsten and carbon and has an atomic ratio of tungsten to carbon equal to 1:0.4 to 1:0.98 is used as said conductor layer. Such resistance element can be used at a temperature of 1400.degree. C. or more and even further at a temperature of 1500.degree. C. or more. The resistance element can increase its temperature rapidly to 1100.degree. C. or more within about 3 seconds without any control circuit. The resistance element is a rapid temperature-rise resistance element with a high ignition performance constituted of ceramics with superior durability including resistance to repetitions of temperature increase and decrease, and resistance to oxidation at a high temperature.

REFERENCES:
patent: 4187344 (1980-02-01), Fredriksson
patent: 4652727 (1987-03-01), Hoshizaki et al.
patent: 4912305 (1990-03-01), Tatemasu et al.
patent: 5264681 (1993-11-01), Nozaki et al.
patent: 5765215 (1998-05-01), Sawamura et al.
patent: 5773158 (1998-06-01), Sawamura et al.

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