Multiple twisted pair data cable with geometrically concentric cable groups
US5821466A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1996 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Dec 23, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B11/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high-speed data communications cable has geometrically concentric layers of twisted pairs of wires. A first, innermost layer includes a first twisted pair of wires having a unique lay length and a first and second dielectric filler. A second geometrically concentric layer is formed about the innermost layer and includes 9 twisted pairs of wires having 5 lay lengths. A third geometrically concentric layer is formed about the second layer and includes 25 twisted pairs of wires having 5 lay lengths. The first, second and third layers are enclosed in a thermoplastic jacket resulting in a flexible data cable with a minimal diameter. Additional layers of more twisted pairs of wires may also be used. A plurality of communication cables may also be commonly sheathed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.