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US 6,308,008 B1Granted
IR-source with helically shaped heating element
AssigneeKanthal AB
InventorsLars-Göran Johansson, Jan Andersson
Life of this patent
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Abstract
An infrared radiation lamp that includes an electrically heated filament and a reflector. The filament is a high temperature element that is wound to a helical configuration. The helical filament is free-standing at operating temperatures, and it is positioned in an open reflector made from a ceramic material.
Claims14
An infrared radiation lamp comprising:
- an electrically heated, high temperature filament that includes molybdenum and silicon and that is made of a material having the chemical formula MoxW1−xSi2 and is wound to a helical configuration that is free-standing at operating temperatures of from about 1700° C. to about 1800° C., wherein the helical configuration includes at most 3.5 turns and is placed in an open-ended reflector made of ceramic material.
Dependencies are inferred from the claim text.