Low voltage electrical wire
US4310597A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1979 |
| Grant date | Jan 12, 1982 |
| Priority date | — |
| Expiry date | Sep 12, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2947
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Low voltage electrical wire with only two layers of insulation. An inner layer of polyolefin is covered by an outer layer of irradiation crosslinked material of a PVC based composition. The outer layer has abrasion and heat resistance but its material has an extensibility at break comparable with the conductor. To increase its capability to protect the conductor, the inner layer is capable of absorbing stresses and strains imposed axially upon the conductor so that while the inner surface of the inner layer extends with the conductor, relative movement of the molecules is possible throughout the depth of the inner layer. Thus, the outer layer restrains the outer surface of the inner layer from extending. The net result is that the outer layer extends less than the conductor and is capable of continued unbroken protection after the conductor has severed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.