Method of manufacturing a composite type stay insulator, and an insulator obtained by the method
US4491687A · kind A · utility
21Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1982 |
| Grant date | Jan 1, 1985 |
| Priority date | — |
| Expiry date | Jul 22, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49227
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A composite type stay insulator comprises a central mandrel (4) made of insulating foam and having its ends (5) glued at (6) to two metal end pieces (1). The glue may be optionally conductive or semiconductive. A skein winding (8) of insulating resin-impregnated fibers is made around the end piece and mandrel assembly to transmit traction forces from a shoulder (7) on one of the end pieces to a corresponding shoulder on the other. The winding is then covered with a resilient insulating covering (9) which is optionally fitted with fins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.