Elevator with a safety arrangement and method for creating a safe working space in the upper part of the elevator shaft
US11505427B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2018 |
| Grant date | Nov 22, 2022 |
| Priority date | — |
| Expiry date | Jul 24, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B2201/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The invention relates to methods and arrangements for creating a safe working space in the upper part of an elevator shaft. A position of an elevator car in the elevator shaft in relation to a plurality of safety levels in the elevator shaft may be monitored, where each safety level is associated with a separate clearance of the elevator car from a ceiling of the elevator shaft. The elevator may be controlled to create a safety space zone at the upper part of the elevator shaft. The controlling may include progressively activating separate braking systems in response to the elevator car progressively moving upwards through separate triggering limits of separate clearances, to progressively strengthen an arresting of upwards movement of the elevator car through the elevator shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.