Refractory ceramic stopper, apparatus for support thereof, and assembly thereof

US5303905A · kind A · utility

Assignee

• Didier-Werke AG · DE

Inventors

• Siegfried Pohl · Oberschleißheim, DE
• Dirk Masurat · Wiesbaden, DE
• Ernst Luhrsen · Schlangenbad, DE
• Gerd Bohndorf · Oberhausen, DE

Key dates

• Filing date: Sep 23, 1992
• Grant date: Apr 19, 1994
• Expiry date: Sep 23, 2012

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D41/18
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A refractory ceramic stopper has therein a recess including an annular outwardly enlarged portion defining a stop surface. A stopper rod inserted into the recess in the stopper has a support surface. A plurality of spreadable members having opposite ends are positioned about the stopper rod and are inserted therewith into the recess in the stopper. The spreadable members are spread outwardly such that they enter the enlarged portion of the recess in the stopper with first ends of the spreadable members confronting the stop surface of the stopper and with second ends of the spreadable members confronting the support surface of the stopper rod. Thereby the spreadable members lock the stopper onto the stopper rod.