Electric line insulator made of organic material and having an inner semi-conductive part extending between end anchor fittings
US4267403A · kind A · utility
7Cited by
6References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1978 |
| Grant date | May 12, 1981 |
| Priority date | — |
| Expiry date | Nov 16, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B17/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to line insulators made of organic material. Such an insulator comprises a bar (7) of high tensile strength, a protective sheath (8) made of an elastomer material, a plurality of fins (4) and an anchor fitting (2) at each end. In accordance with the invention, at least one inner part of the insulator is semiconductive along the whole length which separates the anchor fittings (2); this part may be constituted either by the sheath (8) itself or by the bar (7) and the bedding material in said fittings. Application, in particular, to line insulators intended for use in highly polluted zones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.