Method of sheathing a fiber optic
US4772435A · kind A · utility
14Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1985 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Dec 3, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The optical fiber paid out from a reel passes through an extrusion head, then through a cooling vat, the sheath extruded around it being pulled by a withdrawal device. The sheath then passes through a second vat, when the stranding element is withdrawn by an auxiliary withdrawal device under as low a tension as possible. In the second vat, the stranding element is reduced to a temperature lower than the ambient temperature so that contraction of the sheath ensures the excess length of the optical fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.