Method and machine for the production of convex glass sheets
US7665331B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2004 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | May 22, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B35/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and machine for obtaining bent glass sheets. Glass sheets are brought to their softening temperature, then they are caused to travel over a shaping bed of advancing elements for advancing them which are arranged along a path having a circular arc-shaped profile, the sheets progressively assuming their shape on entering the bed and over a first shaping zone, then being hardened by tempering or cooling in a second zone of the bed until they leave, and then the bent glass sheets thus obtained are recovered. The shaping bed is produced with a profile extending in a circular arc of more than 90°, and, on leaving the shaping bed, the hardened glass sheets are moved in a direction opposite that in which they were fed in.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.