Category 5 telecommunication cable
US5399813A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Jun 24, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B7/0823
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention is directed to a high performance electrical telecommunication transmission cable, particularly for undercarpet applications. More precisely, this invention is directed to a low-profile, high performance flat cable, where the cable may be subjected to potentially damaging compressive forces from walking on an overlying carpet. The cable comprises a plurality of conductors arranged as plural sets of twisted pairs, with each conductor consisting of an inner conductive core surrounded by insulation, an outer dielectric member having plural longitudinally extending chambers, where each chamber includes two sets of the twisted pairs, spaced-apart and arranged in side-by-side fashion and generally parallel. The height of the chamber is dimensioned to exceed the wrap diameter of a set of a twisted pair of conductors. Adjacent chambers include a dielectric vertically disposed wall therebetween to provide resistance to compressive forces, and the twisted pairs therewithin exhibit a preferred twist on the order of 1/2 to 1 inch lay length. For cable lengths of at least 1000 feet, the cable is characterized by an attenuation and NEXT loss which exceed the Category 5 requirement…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.