Overflow down-draw with improved glass melt velocity and thickness distribution
US8973402B2 · kind B2 · utility
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5References
3Claims
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Key dates
| Filing date | Oct 24, 2011 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Mar 14, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for making a glass sheet using overflow fusion down-draw process comprising an inlet assembly having an elliptic cylindrical section coupled to a transition section which is, in turn, coupled to an open end of an open channel of an isopipe, and an overflow fusion down-draw process for making glass sheet. The glass melt flow has a high surface velocity profile conducive to the formation of a glass ribbon over the surface of the weirs and the wedge side surfaces with the desired mass distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.