Electric heating furnace

Details Electric heating furnace Electric heating furnace

1976-02-20

1977-11-01

Envall, Jr., R. N.

H05B 306

Patent

active

040566781

ABSTRACT:
An electric heating furnace which includes a conductive electric resistance heating element strip mounted within a chamber defined by walls of porous refractory insulating material. Terminal or mounting pins extend through the wall of insulating material and the heating strip are secured thereby. A sleeve of non-porous refractory material surrounds the portion of the pin within the wall of insulating material for electrically insulating the pin from the porous refractory wall material which may have a conductive layer of carbon build up therein under certain heat treating conditions.

REFERENCES:
patent: 2896004 (1959-07-01), Duffy et al.
patent: 3456935 (1969-07-01), Bornor

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