Electrical resistance furnace heater

Details Electrical resistance furnace heater Electrical resistance furnace heater

1975-10-14

1976-10-05

Envall, Jr., R. N.

Electric heating

Microwave heating

Tunnel furnace

219406, 219532, 219542, 219552, 338280, 338282, 338283, H05B 306, F27D 1102

Patent

active

039846156

ABSTRACT:
A high temperature unitary electrical resistance heater which is mechanically supported throughout its active length but spaced from a refractory base with the heating element being substantially free of the supporting structure to provide an efficient heater having relatively low thermal inertia while being rigidly supported for high temperature operation. A flat continuous electrical resistor ribbon is disposed in a multiple loop configuration having a plurality of spaced heater segments with flat confronting surfaces and a plurality of legs outwardly extending from an edge of the ribbon and secured within a refractory base to support the ribbon in spaced relation to the refractory base.

REFERENCES:
patent: 1432442 (1922-10-01), Collins
patent: 2162030 (1939-06-01), Piazzoli, Jr.
patent: 3214572 (1965-10-01), Young
patent: 3218437 (1965-11-01), Laing
patent: 3697923 (1972-10-01), Griffes

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