Apparatus and method for mitigating electrochemical attack of precious metal components in a glass making process
US12091352B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2019 |
| Grant date | Sep 17, 2024 |
| Priority date | — |
| Expiry date | Nov 22, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B3/03
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Apparatus and methods are disclosed for forming a glass article in which molten glass is heated in a refractory vessel defining a space interior to the refractory vessel. A precious metal component is exposed to the interior space. The apparatus includes first and second electrodes exposed to the interior space. A first electrical power source configured to supply a first electrical current is connected between the first and second electrodes. A second electrical power source is connected between the precious metal component and at least one of the first electrode or a first auxiliary electrode and configured to provide a second electrical current out-of-phase with the first electrical current. A third electrical power source is connected between the precious metal component and at least one of the second electrode or a second auxiliary electrode and configured to provide a third electrical current out-of-phase with the first electrical current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.