Method of and arrangement for individually activating valves
US5276336A · kind A · utility
3Cited by
7References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 19, 1992 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | May 19, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/11
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method and an arrangement for selective driving of valves of small drive power by means of light. A control generates control signals which are modulated onto a light source which emits said control signals which are received by all the valves via solar cells. However only the addressed valve is switched. No cabling is necessary between the control and the valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.