Electrical insulation
US4521485A · kind A · utility
17Cited by
28References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1983 |
| Grant date | Jun 4, 1985 |
| Priority date | — |
| Expiry date | Sep 27, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2947
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electrical insulation comprises (1) an inner layer of a cross-linked polymer, e.g. polyethylene, an ethylene/tetrafluoroethylene copolymer, an ethylene/chlorotrifluoroethylene polymer or a vinylidene fluoride polymer, and (2) an outer layer of an aromatic polymer having a glass transition temperature of at least 100.degree. C., e.g. a polyether ether ketone, a polyether ketone or a polyether sulfone. Such insulation combines excellent properties under normal service conditions with low smoke evolution on burning, and is therefore particularly useful for aircraft wire and cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.