Elevator installation
US7448471B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 2007 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Aug 31, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/28
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention relates to an elevator installation comprising at least one car, which has a safety gear and with which a control unit, a drive and a brake are associated, and further comprising a safety device for avoiding a collision of the car with an obstacle, another car or an end of the shaft, it being possible by means of the safety device to compare an actual distance of the car from an obstacle, another car or an end of the shaft with a minimum distance and a critical distance. If the actual distance goes below the minimum distance, an emergency stop can be triggered. If the actual distance goes below the critical distance, the safety gear of the car can be triggered. In order to develop the elevator installation in such a way that the distance that is to be maintained at the least by the car from an obstacle, another car or an end of the shaft can be reduced without an emergency stop or a safety gear being triggered, but a car collision can be reliably prevented, it is proposed that it is possible by means of the determining unit of the safety device to determine the critical distance in accordance with a prescribable emergency stop triggering curve and the minimum distance…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.