Electric fuses employing composite aluminum and cadmium fuse elements
US4320374A · kind A · utility
18Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 1980 |
| Grant date | Mar 16, 1982 |
| Priority date | — |
| Expiry date | May 22, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H85/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention involves new high voltage current limiting fuses employing composite metal fuse elements. One metal of the composite is aluminum which is of high conductivity and high melting point while the other is cadmium which is of low melting point, so that melting of the low melting point metal occurs at any and all locations along the element when its temperature reaches the said low melting point. The resulting composite exhibits properties that are not the mean of the metals employed and has a reversible resistance characteristic thus facilitating the design of the fuse for low current fault interruption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.