Device for controlling the temperature and protecting against excessive flow of current of electric installations
US3995246A · kind A · utility
5Cited by
6References
9Claims
0Family size
Inventor
Key dates
| Filing date | Feb 4, 1975 |
| Grant date | Nov 30, 1976 |
| Priority date | — |
| Expiry date | Feb 4, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H37/764
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for controlling the temperature and protecting against excessive flow of current of electric installations, said device being provided with a mechanical switch which opens itself at a definite previously selected temperature, said mechanical switch comprising cylindrical housing wherein two elastic contact means are provided, one of the contact means comprising an open spring spiral torsion with bent ends which is provided around a melting body of thermally softenable material and is pressed with a tension directly against the spring action of the other contact means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.