Method of manufacturing electrical cable, and resulting product, with reduced required installation pulling force
US11011285B2 · kind B2 · utility
4Cited by
155References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2020 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Jun 8, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed are cable types, including a type THHN cable, the cable types having a reduced surface coefficient of friction, and the method of manufacture thereof, in which the central conductor core and insulating layer are surrounded by a material containing nylon or thermosetting resin. A silicone based pulling lubricant for said cable, or alternatively, erucamide or stearyl erucamide for small cable gauge wire, is incorporated, by alternate methods, with the resin material from which the outer sheath is extruded, and is effective to reduce the required pulling force between the formed cable and a conduit during installation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.