Elevator cage departure monitoring device and method
US9061865B2 · kind B2 · utility
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11References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 15, 2011 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Mar 21, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/18
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An electromechanical monitoring device for detecting undesired departure of an elevator cage from standstill includes a co-running wheel which when required is pressed against a guide track of the elevator cage, possibly against a running diameter of the speed limiter. A sensor detects rotation of the co-running wheel and actuates a braking device if a rotational angle of the co-running wheel exceeds a predetermined value. This electromechanical monitoring device can be suitable for attachment to or installation in a speed limiter and can be suitable for retrofitting to elevator installations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.