Blown fuse indicator for electrical fuse
US5781095A · kind A · utility
11Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1997 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Apr 25, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H85/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A blown fuse indicator, having an insulating element, a current-carrying element overlaying the insulating element, and a substantially transparent window. A chemical composition coats at least a portion of the insulating element. The improvement comprises a meltable link in generally parallel proximity to the insulating element. The meltable link, which can be made of solder, melts to open an indicating circuit of the blown fuse indicator upon predetermined thermal overload conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.