Patent · US Expired

Noble metal duct for conducting a glass melt and method for conducting a glass melt

US7007515B2 · kind B2 · utility

4Cited by

11References

8Claims

0Family size

Assignee

Schott AG · DE

Inventors

Erhard Dick · Mitterteich, DE
Erich Fischer · Altdorf, DE
Roland Fuchs · Mitterteich, DE
Markus Riedl · Mitterteich, DE

Key dates

Filing date	Aug 21, 2002
Grant date	Mar 7, 2006
Priority date	—
Expiry date	Dec 19, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03B7/07
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The double-walled noble metal duct (1) for conducting a glass melt has an outer noble metal pipe (1b) and an inner noble metal pipe (1a) extending within the outer pipe, so that an inner space (21) is formed within the inner pipe and an intermediate space (23) is formed between the inner pipe (1a) and the outer pipe (1b). The intermediate space is completely filled with glass melt when the double-walled noble metal duct conducts the glass melt, when the outer pipe (1b) has an exhaust vent (4). The outer pipe (1b) also has a bottom outlet (7) communicating with the intermediate space for removal of oxygen bubbles formed on the outer wall. The noble metal duct can be used in glass conditioning and in the manufacture of glass articles that are devoid of polyvalent ions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.