Signal lamp
US5555492A · kind A · utility
24Cited by
2References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1995 |
| Grant date | Sep 10, 1996 |
| Priority date | — |
| Expiry date | Feb 28, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S43/255
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A casing and a closure plate of transparent, preferably, red color, and comprising one or several light filters provided between the light source and the closure plate, on the one hand, an intensive color impression of the closure plate is attained while the light source is turned off and, on the other hand, the light losses are reduced in that the closure plate is of a continuous coloring, the closure plate is subdivided into segments of varying plate thicknesses and the light filter is provided with recesses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.