Combination loose tube optical fiber cable with reverse oscillating lay
US5905834A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1997 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Jul 21, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4435
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical fiber cable comprises a central tube containing at least one optical fiber, a plurality of outer tubes, each containing at least one optical fiber, and at least two strength members, wherein the outer tubes and strength members are disposed around and in contact with the central tube, the strength members being between intermediate pairs of outer tubes. Preferably, a cord is wound around the outer tubes and strength members to hold them against the outer tube. Preferably, the optical fiber in the central tube is part of an optical fiber ribbon. Preferably, a plurality of individual optical fibers are provided in the outer tubes. The optical fibers are loosely contained within the central and outer tubes. One or several additional tubes containing insulated copper pairs or a coaxial cable may also be provided. Preferably, the cable tubes and the strength members are disposed in a reverse oscillating lay or S-Z fashion around the central tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.