Electrical insulator including a molded one-piece cover having plate-like fins with arcuately displaced mold line segments
US4440975A · kind A · utility
23Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1982 |
| Grant date | Apr 3, 1984 |
| Priority date | — |
| Expiry date | Jul 21, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49227
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical insulator component comprises a one-piece block of moulded fins (11, 12, 13) disposed around an insulating core (10). The surface of the block of fins includes a moulding line (21, 22, 23) and said moulding line has arcuately displaced segments in that the portion 22 extends circumferentially while the portions 21 and 23 extend longitudinally but in different planes. The net result is that dirt building up along the join line does not form a continuous straight-line low resistance path for leakage currents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.