Safety gear for an elevator
US5159995A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1990 |
| Grant date | Nov 3, 1992 |
| Priority date | — |
| Expiry date | Dec 14, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/22
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A safety gear for an elevator, in which the safety gear housing is mounted on the frame using transverse bars or the like. To prevent accidental gripping of the wedges when the elevator car moves laterally, the safety gear housing is allowed to move laterally along the bars. The safety gear is provided with guiding means placed on either side of the guide rail so that the clearance between them and the guide rail is smaller than the clearance between the wedge and the guide rail. Thus, when the lateral displacements of the frame of the elevator car relative to the guide rail exceeds the distance between the guiding means and the guide rail, the safety gear housing is moved laterally and a minimum distance between the wedge and the guide rail is maintained, said minimum distance being at least equal to the difference between said clearances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.