Title:
STOPPER ROD
Document Type and Number:
WIPO Patent Application WO2002100578
Kind Code:
A9
Abstract:
There is provided a refractory mono-block stopper of substantially cylindrical configuration having an upper end, a lower end and Ana axial bore extending downwardly from the upper end, means being provided in the axial bore at a distance d from the upper end for attachment of the stopper to a lifting mechanism, the stopper being divided into three portions (A,B,); a first portion (A) extending from the upper end towards the lower end until a distance greater than d, a second portion (B) extending from the first portion (A) towards the lower end and a third portion (C) extending from the second portion (B) and comprising a stopper nose ending at the lower end of the stopper. The stopper of the invention is characterized in that the average section of the second portion (B) is lower than the section of the first portion (A) and the highest section of the third portion (C) is higher than the lowest section of the second portion (B). The stopper of the invention has a significantly reduced weight without any observable loss of strength. It is also noted that since the profile of the stopper can be kept symmetrical around its axis, the stopper does not require extra handwork to be removed from the mould.
Inventors:
MORIARTY BRENDAN MORTIMER (GB)
RICHARD FRANCOIS-NOEL (FR)
HANSE ERIC (FR)
RICHARD FRANCOIS-NOEL (FR)
HANSE ERIC (FR)
Application Number:
PCT/BE2002/000092
Publication Date:
August 26, 2004
Filing Date:
June 06, 2002
Export Citation:
Assignee:
VESUVIUS CRUCIBLE CO (US)
MORIARTY BRENDAN MORTIMER (GB)
RICHARD FRANCOIS-NOEL (FR)
HANSE ERIC (FR)
MORIARTY BRENDAN MORTIMER (GB)
RICHARD FRANCOIS-NOEL (FR)
HANSE ERIC (FR)
International Classes:
B22D41/18; B22D11/10; (IPC1-7): B22D41/18
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