Device for drawing down an optical fiber preform
US5931984A · kind A · utility
8Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1997 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Apr 22, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2205/80
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A device for drawing down an optical fiber preform (2) connected at one end to a feed rod (3) having an equal or smaller diameter. A chamber (11) in which the preform is drawn has an upper part (11A) with an opening (12). The opening engages the preform to seal the chamber. An enclosure (5) has a seal (6) at its upper part (5A) for sealing around the feed rod. A lower part (5B) of the enclosure contacts the upper part of the chamber to seal the chamber while the feed rod is passing through the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.