Method and equipment for the evacuation of lift passengers
US6848544B2 · kind B2 · utility
0Cited by
10References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 10, 2002 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | Jul 6, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/044
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method and equipment is provided to allow a stuck elevator lift cage to be moved in situations when the lift cage and passengers is in weight equalization with the lift counterweight. With the lift's safety brake dis-engaged and the lift drive unactuated, the drive brake is released and an additional force is applied to the lift cage from a source external to the lift drive to move the lift cage to a position for passenger evacuation. The additional force may be applied through a cable pull connected to the limiter cable of the elevator's speed monitor system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.