System for producing an optical fiber preform with gas volume control
US4421540A · kind A · utility
15Cited by
3References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 11, 1981 |
| Grant date | Dec 20, 1983 |
| Priority date | — |
| Expiry date | Dec 11, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B37/0144
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing an optical fiber preform in a muffle furnace by hydrolyzing a gaseous glass forming material with a flame from an oxyhydrogen burner and depositing the resulting soot in a rod shape and an apparatus therefor are described, wherein a gas is supplied to the muffle furnace other than from said burner, and the volume supply of said gas is held constant by controlling the amount of a control gas supplied into an intermediate portion of an exhaust pipe through which the gases formed in the muffle furnace and the fine glass particles that do not deposit in a rod shape are discharged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.