Electro-optical overhead wire with at least 24 light wave guides
US5222173A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 26, 1991 |
| Grant date | Jun 22, 1993 |
| Priority date | — |
| Expiry date | Aug 26, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4422
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The electro-optical overhead wire is made from a plurality of circular cross-sectioned strand elements and consists of a core and a plurality of wire layers surrounding the core radially. The wire layers include at least one layer of chiefly electrically conducting wires and at least one other layer of predominantly high tensile strength wires. At least one of the wire layers of the high tensile strength wire also contains at least two strand elements arranged symmetrically around the core and each consisting of a high quality steel tube with an outer diameter of 2.5 mm containing at least 12 light wave guides. Alternatively or in addition, the electro-optical overhead wire is made up of a core and a first wire layer immediately surrounding the core and a second wire layer immediately surrounding the first wire layer, while the core contains a high quality steel tube with a five mm diameter containing 12, 18 or 24 bundles of light wave guides containing two light wave guides in each bundle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.