Method of and apparatus for making twisted cable and the cable produced thereby
US6101804A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1998 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Aug 25, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B13/0235
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of and an apparatus for making twisted electrical cable, such as 600 volt secondary distribution (UD) cable, and the twisted cable product are disclosed. The apparatus comprises a first plurality of stationary payoff reels each wound with a length of stranded bare wire conductor. The stranded conductors are simultaneously payed off the reels to a pay out accumulator for accumulating a portion of the stranded conductors during replacement of spent pay out reels. An extruder apparatus arranged downstream of the accumulator applies a plastic insulation material to a respective stranded conductor as it passes through the extruder. A cooling trough through which water is flowed cools the plastic insulation. A take-up accumulator arranged downstream of the cooling trough accumulates a portion of each insulated conductor during changeover of the take-up arranged downstream of the take-up accumulator. The take-up is rotated about a first axis to twist each insulated conductor about its longitudinal axis and to simultaneously twist the insulated conductors about one another to form a twisted electrical cable. The take-up is also rotated about a second axis for taking up the twisted…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.