Method for flame abrasion of glass preform
US5674305A · kind A · utility
8Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1995 |
| Grant date | Oct 7, 1997 |
| Priority date | — |
| Expiry date | Jul 5, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B37/01466
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a process wherein a large glass preform is flame abraded to have a clear and smooth surface. In particular, the present invention pertains to a method for flame abrading a surface of a rotating glass preform by an oxyhydrogen flame which moves along a length of the glass preform, in which a movement velocity of the oxyhydrogen flame or a flow rate of oxyhydrogen of the oxyhydrogen flame is varied to conduct the flame abrasion treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.