Sighting device for luminaire positioning
US3978590A · kind A · utility
4Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1974 |
| Grant date | Sep 7, 1976 |
| Priority date | — |
| Expiry date | Aug 29, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S8/086
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a device for facilitating the calibration and setting of the inclination angle of a luminaire by sighting from the rear of the luminaire to a set of points such as the opposite curb of a roadway. The device may be placed on or permanently secured to the luminaire and is settable according to a derived calibrated table, either empirically derived or calculated, based on such factors as pole height, distance of pole from highway, width of the roadway, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.