Automatic gel changer for a spotlight
US4298920A · kind A · utility
13Cited by
3References
4Claims
0Family size
Inventors
Key dates
| Filing date | Jun 7, 1979 |
| Grant date | Nov 3, 1981 |
| Priority date | — |
| Expiry date | Jun 7, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/406
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An automatic gel changer for remote operation, including a rotary solenoid associated with each gel frame to rotate such frames in and out of the path of the beam of light from the spotlight. Also associated with each gel frame is a damper for causing the motion of the gel frames as provided by the solenoids to be smooth and continuous.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.