Elevator system which controls a value of overspeed
US8177034B2 · kind B2 · utility
3Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2006 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Apr 24, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B13/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator system in which a controller monitors whether or not a speed of an ascending/descending body reaches a preset overspeed. At a time of maintenance work, a stopper is interposed between a buffer and the ascending/descending body to limit a lowered position of the ascending/descending body. A stopper detector detects installation of the stopper onto at least one of the buffer and the ascending/descending body. When the stopper is detected by the stopper detector, the controller lowers a set value of the overspeed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.