Fog lamp
US4731713A · kind A · utility
14Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 24, 1986 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Mar 24, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/335
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fog lamp is comprised of a reflector and a pane connected to the reflector. An incandescent lamp is positioned inside the reflector which has a lower portion formed by paraboloid and an upper portion the vertical cross-section of which is formed by ellipse while its horizontal cross-section is formed by parabola. The upper and lower portions have a common focus and a common focal length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.