Insulated electrical conductor wire and method for making same
US4789589A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 19, 1988 |
| Grant date | Dec 6, 1988 |
| Priority date | — |
| Expiry date | Jan 19, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2975
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A conductor wire with an inner layer of insulation of cellular polyolefin compound and an outer layer of polyvinylchloride. The polyvinylchloride includes a material compatible with the polyolefin and which bonds to the polyolefin to bond the layers together. The compatible material may be chlorinated polyethylene. In the insulated structure, the inner layer has a substantially continuous skin which is bonded to the outer layer. In a method of forming the insulation, the inner layer is maintained as a non-cellular structure which the outer layer is extruded onto it. This provides unbroken opposing surfaces of the layers which are bonded together and the integrity of the surface of the inner layer is maintained as the layer is formed into a cellular structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.