Optical fibre with a protective covering
US4302073A · kind A · utility
9Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 1979 |
| Grant date | Nov 24, 1981 |
| Priority date | — |
| Expiry date | May 9, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to optical fibres with a protective covering for use in cables. The fibre is protected by a covering of plastic material extruded from an extruder the punch of which protrudes 0.5 to 1 mm beyond the draw plate, and rapidly cooled at the outlet of the draw plate, so that it surrounds the optical fibre with a clearance between 1 and 10 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.