Signal lamp with a movable slit plate
US4530041A · kind A · utility
12Cited by
2References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1984 |
| Grant date | Jul 16, 1985 |
| Priority date | — |
| Expiry date | Jan 25, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V9/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A signal lamp having in its housing with an opening, a bulb, an optical elements installed in the housing for converting the light of the bulb into parallel rays of light, a colored lens being colored differently in plurality of regularly disposed patterns, a slit plate installed slidably and provided with portions pervious to light corresponding to said pattern in shape and a solenoid, by which the slit plate is shifted and the radiated light is converted in its color.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.