Unlocking device, elevator system having an unlocking device, and method for actuating an unlocking device
US10549951B2 · kind B2 · utility
0Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2015 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Sep 27, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05B2047/0048
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An unlocking device with an actuator releases a safety cover of a maintenance opening for opening. The locking device has a safety circuit for actuating the actuator. The safety circuit includes at least one first switching contact and a second switching contact arranged in series, wherein the actuator in a closed state of the first and the second switching contacts is connected by the safety circuit with a power source, and the first switching contact can be switched by a control unit. One or more of the unlocking device can be used in an elevator system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.