Method of manufacturing electrical cable, and resulting product, with reduced required installation pulling force
US9431152B2 · kind B2 · utility
27Cited by
130References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2016 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | Mar 11, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is type THHN cable 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 nylon sheath. A high viscosity, high molecular weight silicone based pulling lubricant for THHN cable, or alternatively, erucamide or stearyl erucamide for small THHN gauge wire, is incorporated, by alternate methods, with the nylon material from which the outer sheath is extruded, and is effective to reduce the required pulling force on the cable during installation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.