Hoisting apparatus
US6520484B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2000 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Nov 22, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V21/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A hoisting apparatus is provided to facilitate maintenance of a load such as luminaires used at high elevations under safe working conditions. The apparatus comprises at least one cable, a load holder for holding the load, a base secured to a ceiling of a structure, and coupled to the load holder through the cable, and a drive unit for moving the load holder up and down by use of the cable between a top position where the load holder is located adjacent to the base, and a bottom position where the load holder is spaced from the base. The load holder has cable-length adjust unit for adjusting a length of the cable to stop the load holder at a desired position between the top and bottom positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.