Protection device for electrical incandescent lamps
US4570108A · kind A · utility
8Cited by
9References
4Claims
0Family size
Inventors
Key dates
| Filing date | Mar 5, 1984 |
| Grant date | Feb 11, 1986 |
| Priority date | — |
| Expiry date | Mar 5, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B39/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Protection device for electrical incandescent lamps provided with elements which upon switching on electric voltage limit the current strength during a switching-on interval. The device further includes a control unit with a controllable current valve (10) and timing means (19, 20) for the control of the current through the lamp upon switching-on so that a delayed increase of current is obtained from zero to a chosen operating current over a predetermined time interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.