Elevator emergency stop systems
US11261055B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2018 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | Mar 7, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B7/068
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Elevator systems and methods of operation include a tension member support positioned within an elevator shaft, a tension member suspended from the tension member support within the elevator shaft, and a slack detection system. The slack detection system includes at least one biasing element housed within the tension member support and operably coupled to the tension member, the at least one biasing element arranged to receive a load from the tension member and a switch arranged to be moved from a first position to a second position in response to movement of the at least one biasing element, wherein when in the second position the switch triggers an emergency stop of an elevator car within the elevator shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.