Elongated stopper device
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United States of America Patent
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Oct 6, 2009
Grant Date -
Feb 21, 2008
app pub date -
Jun 23, 2005
filing date -
Jul 22, 2004
priority date (Note) -
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Abstract
An enlongated stopper device for flow-control of molten metal from a vessel, containing molten metal, said device comprising: a) a body (10) made of a refractory ceramic material, b) a bore hole (12), having a longitudinal axis (A) and extending from an upper surface (10u) of said body downwardly, c) a rod (14), penetrating with one end (14l) into said bore hole (12) and being fixedly secured within said body (10), d) a sealing member (18), being arranged within a space adjacent to or being part of said bore hole (12), said space being defined at least partly by unlike surface sections (12a, 12i, 14s) of said rod (14) and said body (10) respectively.
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