Pole and device for raising and lowering lighting fixtures thereon
US4025782A · kind A · utility
14Cited by
3References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1976 |
| Grant date | May 24, 1977 |
| Priority date | — |
| Expiry date | Feb 24, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V21/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A pole or mast is disclosed having lighting fixtures at the upper end thereof and means for raising and lowering the lighting fixtures by a cable. The pole is constructed so that it may receive and temporarily support a portable device having a motorized winch for raising and lowering the lighting fixtures. By having the winch on the portable device, it is not necessary to have a winch inside each pole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.