Method for the differentiated hardening of glass sheets, especially of automobile windshields, and tempered glass sheet
US4508783A · kind A · utility
6Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1983 |
| Grant date | Apr 2, 1985 |
| Priority date | — |
| Expiry date | Apr 18, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/315
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method of differentiated rate of hardening of a glass sheet by blowing a cooling gas in the direction of this sheet having two zones from nozzles. According to the invention, a simultaneous solidification of the glass sheet is produced at both zones of the sheet in spite of the differentiated treatments applied to establish a difference of hardening between the different zones of the sheet. Application is to the production of flat glass sheets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.