Time delay fuse
US5345210A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1993 |
| Grant date | Sep 6, 1994 |
| Priority date | — |
| Expiry date | Jul 19, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2085/383
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A time delay fuse and various subassembly components for that time delay fuse. The fuse includes a housing made of an insulating material. The housing encloses a short-circuit fusible element, preferably a copper or copper alloy strip having a plurality of slots. The housing also encloses one or more rigid meltable fusible elements, preferably a plurality of solder bars. A body of resilient, compressible insulating material has at least one passageway through which each of the time delay fusible elements extends. When the rigid meltable fusible elements melt, the circuit through the fuse opens. In addition, the passageway which surrounded the rigid meltable fusible elements collapses upon its melting. This provides protection against "arc-back."
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.