Heater for resistance furnaces

Details Heater for resistance furnaces Heater for resistance furnaces

1979-03-14

1980-12-09

Envall, Jr., Roy N.

Electrical resistors

Incased, embedded, or housed

Element in insulation with outer metallic sheath

338282, 338286, 338294, 338298, H05B 306, H05B 334

Patent

active

042386365

ABSTRACT:
The present invention relates to a heater, primarily for pressure furnaces for extremely high temperatures for isostatic compression. The resistance elements of the heater are arranged between two metal rings at different levels which are supported by conductors. The resistance elements comprise two groups of wires arranged in a righthand and a lefthand spiral, respectively. The wires are joined together at the intersection points by means of lashing.

REFERENCES:
patent: 424047 (1890-03-01), Butterfield et al.
patent: 3420985 (1969-01-01), Andersen et al.

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