Sealed device for preventing exhaust gas leakage

Details Sealed device for preventing exhaust gas leakage Sealed device for preventing exhaust gas leakage

2005-01-25

2008-09-16

Van, Quang T (Department: 3742)

Industrial electric heating furnaces

Environmental control

Arc furnace

C373S077000, C266S216000

Reexamination Certificate

active

07426230

ABSTRACT:
A device that prevents exhaust gas leakage during movement of an electrode in an electric furnace. An electrode holder is attached to the electrode. An actuator moves the electrode between first and second positions within an aperture formed in an upper portion of the furnace. A fixed section is attached to a waste charging station. A first moving section is moveably coupled with the fixed section, a second moving section is moveably coupled with the first section and fixedly attached to the electrode holder on a first side, and a third moving section is fixedly attached to the electrode holder on a second side opposite the first side. The device moves between a retracted position in which the first and second moving sections are adjacent to the fixed member, and an extended position in which the first and second moving sections are distal from the fixed member.

REFERENCES:
patent: 4065634 (1977-12-01), Beizerov et al.
patent: 5153894 (1992-10-01), Ehle et al.
patent: 6274081 (2001-08-01), Fuchs

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