Device for enabling access to a structure above ground level
US8534421B2 · kind B2 · utility
3Cited by
20References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 13, 2011 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Oct 13, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a device for enabling access to a structure above ground level by lowering and/or lifting the device in relation to the structure, the device comprising a first endless frame structure defining an opening, wherein at least part of the first endless frame structure forms a track portion, the track portion being adapted to guide an, in relation to the track portion, movable object, such as a gondola, along the track portion. The device may further comprise a second endless frame structure defining an opening, the second endless frame structure being aligned with the first endless frame structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.