Adjustable fume tube burner
US11577983B2 · kind B2 · utility
0Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2020 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Apr 26, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23D2900/21005
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of forming an optical fiber preform includes the steps: igniting a burner having a fume tube assembly to produce a first spray size of silicon dioxide particles; depositing the silicon dioxide particles on a core cane to produce a soot blank; and adjusting an effective diameter of an aperture of the fume tube assembly to produce a second spray size of the silicon dioxide particles. The second spray size is larger than the first spray size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.