Electrode seal

Details Electrode seal Electrode seal

1979-12-03

1981-10-13

Envall, Jr., Roy N.

H05B 712

Patent

active

042950015

ABSTRACT:
An electrode seal for an electric furnace having an electrode moveable through an opening in the furnace roof. The seal comprises a ring partially overlying the opening and having a plurality of radially slidable refractory bricks adapted to engage and seal with the electrode. Contraction means are provided for periodically moving the bricks radially inwardly of the opening to contact the electrode. The bricks are free to move radially outwardly of the opening under force of engagement with the electrode during periods when the contraction means is inoperative.

REFERENCES:
patent: 1732431 (1929-10-01), Bruggmann
patent: 2979550 (1961-04-01), Sherman, Sr.
patent: 3198870 (1965-08-01), Simpkin et al.
patent: 3379816 (1968-04-01), Hozven
patent: 3683095 (1972-08-01), Salmin et al.
patent: 3709506 (1973-01-01), Beerman

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