Discrete glass sheet cutting
US4749400A · kind A · utility
21Cited by
28References
82Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1986 |
| Grant date | Jun 7, 1988 |
| Priority date | — |
| Expiry date | Dec 12, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B21/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Glass shapes and sheets are cut directly from a heated glass ribbon while maintaining the optical quality of the cut glass. A float glass ribbon is removed from a glass forming chamber and prior to annealing, a line of cut is heated to its softening temperature. A blade arrangement thereafter penetrates the glass along the heated line of cut to sever the glass. During the line heating and cutting operation, the overall glass temperature is maintained above the strain point of the glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.