The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2006
Filed:
Aug. 21, 2002
Erhard Dick, Pechbrunn, DE;
Erich Fischer, Mitterteich, DE;
Roland Fuchs, Mitterteich, DE;
Markus Riedl, Mitterteich, DE;
Erhard Dick, Pechbrunn, DE;
Erich Fischer, Mitterteich, DE;
Roland Fuchs, Mitterteich, DE;
Markus Riedl, Mitterteich, DE;
Schott AG, Mainz, DE;
Abstract
The double-walled noble metal duct () for conducting a glass melt has an outer noble metal pipe () and an inner noble metal pipe () extending within the outer pipe, so that an inner space () is formed within the inner pipe and an intermediate space () is formed between the inner pipe () and the outer pipe (). The intermediate space is completely filled with glass melt when the double-walled noble metal duct conducts the glass melt, when the outer pipe () has an exhaust vent (). The outer pipe () also has a bottom outlet () 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.