Tower elevator alarm system
US8692679B2 · kind B2 · utility
3Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2009 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Sep 22, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/027
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator within a tower, such as a wind tower, includes a traction or drum type hoist powered by an electric motor where the hoist provides the mechanism to cause the vertical ascent or descent of the elevator. An aspect of the invention is to allow the descent of the elevator to drive the electric motor arranged to act as a generator and provide regenerative braking as well as power to drive an alarm device or devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.