Triggering of an elevator brake in an emergency situation
US9126804B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 8, 2012 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Apr 13, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method for triggering an elevator brake in an emergency situation of a vertically movable elevator car in an elevator installation, wherein a movable part of the brake is held in a starting position by an electromagnetic force generated by a coil connected with a voltage source, and for triggering the brake the voltage supplied to the coil is interrupted and the movable part is moved from the starting position to a braking position by a spring force of at least one spring. A voltage is set by a switching unit that is connected with a control unit in dependence on at least one travel parameter of the elevator car determined by the control unit and, in the case of failure of the voltage source, triggering of the elevator brake is delayed by a delay unit in dependence on the set voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.