Rainbow phenomenon developing device
US4002333A · kind A · utility
Inventor
Key dates
| Filing date | Aug 4, 1975 |
| Grant date | Jan 11, 1977 |
| Priority date | — |
| Expiry date | Aug 4, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2121/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rainbow phenomenon developing device comprising an arched structural framework defining an opening in which viewers walk, means for spraying fine water particles in the form of a mist mounted on said framework, colored transparent panels mounted on said framework in the same arrangement as that of the natural rainbow color distribution pattern, portions of said water particle spraying means extending through said panels and artificial light ray developing means mounted on said framework inwardly of and spaced from said transparent panels for illuminating the panels when energized whereby under weather conditions where the light rays of the sun are available, only the water particle spray means are operated to provide a mist atmosphere about the developing device for forming a rainbow phenomenon in cooperation with the light rays of the sun whereas under weather conditions where the light rays of the sun are not available, in addition to the operation of said water particle spray means, the artificial light ray developing means are also energized to illuminate the colored transparent panels to develop the colors in the same pattern as the natural rainbow color distribution pattern…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.