Tap closure for a vacuum-induction melting and casting furnace

Details Tap closure for a vacuum-induction melting and casting furnace Tap closure for a vacuum-induction melting and casting furnace

1993-08-23

1994-12-13

Kastler, Scott

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

With means to discharge molten material

222602, 266272, B22D 4120

Patent

active

053723554

ABSTRACT:
An apparatus for opening and closing a bottom tap opening in a vacuum induction melting and casting furnace with a movable closing body, a plug rod for example, and a drive unit for the displacement of the closing body, the closing body being made of ceramic material and connected by levers to a coupling element, which has a compression spring to limit the maximum closing force of the closing body, and is displaceable by an electric motor drive.

REFERENCES:
patent: 668450 (1901-02-01), McFadden
patent: 2113894 (1938-04-01), Lucier
patent: 3744684 (1973-07-01), Heimgartner
patent: 4139050 (1979-02-01), Glaser et al.
patent: 4660749 (1987-04-01), Yokoi et al.
patent: 4736930 (1988-04-01), Weber et al.
patent: 4953761 (1990-09-01), Fishman
patent: 5004130 (1991-04-01), Vaterlaus
patent: 5033658 (1991-07-01), Thornton et al.
patent: 5083689 (1992-01-01), Vaterlaus

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