Elevator installation having a virtual protection area at the bottom and/or the top of the elevator shaft, and method for controlling the same
US7201256B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2002 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Sep 4, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/0043
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator installation with an elevator case, an elevator shaft, and a drive unit. The elevator cage is installed in the elevator shaft to be movable and is controllable by the drive unit so that the elevator cage can be stopped in different positions in the elevator shaft. The elevator shaft is equipped with a detecting device which detects whether a person is standing in a critical zone in the elevator shaft or is about to go into this. The detecting device is connected with the drive unit so that the elevator installation can be transferred to a special mode of operation in case a person is standing in the critical zone or is about to go into this. The drive unit includes special control equipment which in the special mode of operation stops the elevator cage before it moves into the critical zone. In that case the detecting device and the special control equipment are designed to be operationally safe in order to prevent movement of the elevator cage into the critical zone. The special control equipment enables, in the special mode of operation, an undisturbed operation of the elevator cage in a zone outside the critical zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.