Device for effecting a gastight closure

Details Device for effecting a gastight closure Device for effecting a gastight closure

1976-02-25

1977-03-01

Envall, Jr., R. N.

13 18, F27D 300, H05B 706

Patent

active

040103137

ABSTRACT:
A device for effecting a gastight closure of an inner tube of a hollow electrode of an electrothermal smelting furnace, includes a stub tube attached to the inner tube and an elastomeric deformable closure plug movable within the stub tube and into sealing engagement with both the inner walls of the inner tube and with the stub tube. A rigid pressure transmitter body is embedded within the plug and subdivides it into a section of elastomeric material lying against the inner wall of the inner tube and a section of elastomeric material lying against the inner wall of the stub tube. The two sections are interconnected, and the actuator rod is connected to the section adjacent the stub tube so that, upon the exertion of an inward thrust on the actuator rod, the two sections of the plug are expanded into sealing engagement with the inner walls of the stub and inner tubes.

REFERENCES:
patent: 3210129 (1965-10-01), Penner
patent: 3370119 (1968-02-01), Grimm et al.
patent: 3471626 (1969-10-01), DeWeese et al.
patent: 3564103 (1971-02-01), Brachschob et al.
patent: 3573337 (1971-04-01), Grimm et al.
patent: 3604826 (1971-09-01), Muller
patent: 3737554 (1973-06-01), Horibe et al.

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