Multiple color lamp
US4713736A · kind A · utility
4Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1987 |
| Grant date | Dec 15, 1987 |
| Priority date | — |
| Expiry date | Jan 30, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/125
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
According to the invention, a single headlamp is provided to selectively project a first color light, a second color light or a desired blend thereof. Preferably, a clear bulb contains a second bulb with a yellow light transmitting surface. Each bulb has a filament light source which can be selectively powered to produce white and yellow light, with the latter being effective for penetration of fog, dust, smoke, etc. with the lamp used on a moving vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.