Elongated stopper device
US7597221B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 23, 2005 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | Aug 2, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D41/186
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.