Current limiting fuse with indicator
US4766408A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1987 |
| Grant date | Aug 23, 1988 |
| Priority date | — |
| Expiry date | Sep 3, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H85/303
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current limiting fuse with an indicator characterized by a generally tubular, electrically insulating casing having a pair of tubular terminal members at opposite ends of the casing. A fusible element extends between the terminal members and through the casing. An indicator plunger extends from one end terminal member and is movable between a retracted and extended positions and is biased in the extended position. A restraining wire extending between the other end terminal member and the indicator plunger. The wire having a smaller diameter portion in the casing. An electrically conductive grease disposed between the plunger and the tubular terminal member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.