High temperature diffusion furnace

Details High temperature diffusion furnace High temperature diffusion furnace

1990-02-06

1991-08-06

Walberg, Teresa J.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

F27D 1102, H05B 366

Patent

active

050380192

ABSTRACT:
The furnace 70 includes a heating element 72 which is restrained from growth during operation of the furnace 70 by retaining spacers 84 which provide a yoke 88 around the individual coils 102 of the heating element 72 and which spacers 84 are interlocked with each other. A high alumina fiber insulation 180 is applied to insulate the heating element 72. This high alumina fiber insulation 180 has enhanced properties with respect to shrinkage and devitrification.

REFERENCES:
patent: 2398874 (1946-04-01), Weyhing
patent: 3299196 (1967-01-01), Lasch
patent: 3361863 (1968-01-01), Lang
patent: 4147888 (1979-04-01), Sato
patent: 4159415 (1979-06-01), Williams
patent: 4596922 (1986-06-01), Erickson
patent: 4885454 (1989-12-01), LaVoie

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