Method and apparatus for curving a glass sheet
US4802903A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1987 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Sep 14, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B23/0352
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a method of curving a glass sheet with the aid of a hot gas stream with a large cross sectional area, whereby the glass sheet is pressed against a curving form, in certain prescribed edge regions of the glass sheet in static pressure component of the flowing gas is increased by reducing the flow speed of the flow component (of the hot gas stream) traveling in the radial direction along the surface of the glass sheet, which speed reduction is accomplished by the interposition of barriers in the path of this flow component. The preferred such barriers are pressure baffles (38), which are disposed at certain selected locations on the edge of the curving form (31), said baffles being oriented perpendicularly to the terminal tangents of the forming surface (32) of the curving form (31).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.