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:
Oct. 07, 2003
Filed:
Nov. 20, 2000
Friedrich Baucke, Mainz, DE;
Johann Weber, Wiesbaden, DE;
Thomas Pfeiffer, Ingelheim, DE;
Gernot Röth, Dalheim, DE;
Schott Glas, Mainz, DE;
Abstract
The invention relates to a method for suppressing the formation of oxygen gas bubbles at the contact interface between a glass melt and a component of a glass melting arrangement with this component being made of a precious metal. This component is especially the precious metal lining of a feed channel. The characterization “precious metal” includes in this context: platinum, gold, rhenium, all other metals of the platinum group, the alloys of the above-mentioned metals and the above-mentioned metals and alloys in dispersion oxide enhanced form. The occurrence of gas bubbles at the phase boundary between precious metal and the glass melt has been known for some time without effective measures having been suggested up until now to improve significantly the quality and yield of the generated glass products, particularly because precious metal parts have to be arranged in the glass manufacture downstream of the usual purification devices with which gas bubbles can be removed from the melt. To solve the task resulting therefrom, it is provided in accordance with the invention that the part, which is made of precious metal, is electrically conductively connected to one or several electrodes which are arranged spaced from the part, which is made of precious metal, in the glass melt, and that a potential drop is generated between the electrode and the part made of precious metal so that a current flows.