Device for indicating the short-circuiting of a lightning arrester
US4788622A · kind A · utility
9Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 28, 1987 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Jul 28, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T1/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In order visually to indicate the existence of a "continuation" current through a lightning arrester, an indicator is associated therewith, which is formed by an elastically deformable strip maintained retracted against capsule electrode by a retention mechanism which is associated with an electrical filter which causes fusion of a fusible wire under the effect of a "continuation" current. Once its end is released, the strip projects outwardly of the lightning arrester and marks the location of the defective insulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.