Electrical heating resistance element

Details Electrical heating resistance element Electrical heating resistance element

2007-01-16

2007-01-16

Evans, Robin O. (Department: 3742)

Electric heating

Heating devices

With heating unit structure

C219S553000, C219S270000, C219S552000, C219S530000, C338S217000

Reexamination Certificate

active

10510143

ABSTRACT:
An electrical resistance heating element having a glow zone and two power supply terminals. The glow zone of the element is tubular. A tubular union is provided between each of the power supply terminals and a respective end of the glow zone, wherein the inner diameter of the union is smaller than the inner diameter of the glow zone. A transition region extends between each union and a respective glow zone end and has a progressively decreasing wall thickness in the direction from the union toward the glow zone.

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