Light attenuator for high/low beam vehicle headlight bulb
US5357407A · kind A · utility
3Cited by
12References
9Claims
0Family size
Inventor
Key dates
| Filing date | May 10, 1993 |
| Grant date | Oct 18, 1994 |
| Priority date | — |
| Expiry date | May 10, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/435
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light attenuator sleeve which removably attaches to a high/low beam halogen vehicle headlight bulb. The sleeve is designed to fit onto the high/low beam bulb assembly so that light emitted by the bulb passes through the sleeve and the intensity of the light is attenuated. The sleeve is attached to the high/low beam bulb assembly after the low beam filament is expired and has an appropriate degree of opaqueness to attenuate light emitted by the high beam filament to a low beam intensity after passing through the sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.