Trigger mechanism for time-delay fuses
US5247274A · kind A · utility
12Cited by
2References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1992 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Jul 30, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H85/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A time-delay fuse having a fuse element with a series of weak spots surrounded by a loose sand filler. The fuse element is connected to a trigger mechanism by solder or other meltable alloy. The trigger section provides overload protection and the fuse element provides short circuit protection resulting in a time-delay fuse which can be used in places where there are size restrictions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.