Electric heat treating furnace with quickly serviceable heating

Details Electric heat treating furnace with quickly serviceable heating Electric heat treating furnace with quickly serviceable heating

1984-09-10

1986-08-26

Envall, Jr., Roy N.

Industrial electric heating furnaces

Resistance furnace device

With heating element detail

373114, 373125, 373137, 174 15BH, 174153R, H05B 308

Patent

active

046086986

ABSTRACT:
A heat treating furnace in which an electrical resistance heating element is disposed in a chamber and is energized by way of a power feed through conductor which extends slidably through the wall of the furnace. An insulating washer and a retaining washer may be installed on and removed from the inner end portion of the feed through conductor from inside the furnace without either removing the conductor from the furnace wall or disconnecting the conductor from the heating element. A power terminal block and inlet and outlet lines for cooling water are adapted to be quickly and easily disconnected from the outer end portion of the feed through conductor to permit the conductor to be easily pulled inwardly through the furnace wall for servicing.

REFERENCES:
patent: 3150226 (1964-09-01), Thorne et al.
patent: 3737553 (1973-06-01), Kreider et al.
patent: 4286111 (1981-08-01), Massey et al.
patent: 4429403 (1984-01-01), Hooper

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