Method and apparatus for controlling elevator cars in a common sling
US6161652A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 1999 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Feb 1, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S187/902
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method and an apparatus for controlling an elevator is equipped with a deck-distance drive machine which by reference to positional information adjusts the distances between the individual cars in a common car sling in such a way that each car can stop at the corresponding floor accurately, i.e. without forming a step. Measured values of floor position are stored in memories and periodically updated so as to detect any changes such as, for example, building settlement. Based on this data the necessary deck-distances are calculated which are necessary for all the cars to stop without any of them forming a step. Furthermore, the method and the device can be correspondingly extended for a multi-decker elevator and for any type of control (conventional control, destination call control, etc.).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.