Safety brake and method for unlocking a safety brake
US6758310B2 · kind B2 · utility
14Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2001 |
| Grant date | Jul 6, 2004 |
| Priority date | — |
| Expiry date | Mar 19, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/20
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A safety brake for the load receiving portion of an elevator includes a fixing device that is displaceable relative to the load receiving portion in the direction of the guide rail between two abutments fastened to the load receiving portion. The unlocking of the safety brake after a braking process is achieved by moving the load receiving portion with the assistance of the elevator drive unit oppositely to the direction of movement before the braking process, so that one of the abutments fastened to the load receiving portion strikes the fixing device to unlock it from the guide rail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.