The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 2002
Filed:
May. 19, 2000
Bernhard Enkner, Linz, AT;
Helmut Kerschbaum, Neuzeug, AT;
Ernst Höllwarth, Neuzeug, AT;
Albert Paster, Niederkappl, AT;
Christian Post, Linz, AT;
Abstract
In a method for closing and opening a tapping hole of a metallurgical vessel, in which method a closure body ( ), which leaves clear an annular gap between the closure body ( ) and the wall of the tapping hole, can be moved out of a waiting position (I) into a closure position (II), in which it covers the tapping hole, and back, and in which method, at least in the closure position (II), a pressurized gas is introduced into the tapping hole counter to the outflow direction of a molten material contained in the metallurgical vessel, in order to avoid skull formation, the closure body ( ) is moved out of the waiting position (I) into the closure position (II) and back with directions of movement which lie in different areas.