Safety device for securing minimum spaces at the top or bottom of an elevator shaft being inspected, and elevator having such safety devices
US8136637B2 · kind B2 · utility
10Cited by
9References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2006 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Feb 13, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/18
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A safety device for an elevator system includes a retractable element mounted on a support. The retractable element has a stopping position in which a catch portion of the retractable element projects from the support to engage a triggering member of a safety brake associated with an elevator car as the elevator car traveling in a selected direction approaches a selected vertical position, and a retracted position. An actuator selectively controls the position of the retractable element. A position sensor is responsive to the position of the retractable element to make sure that it is in its stopping position when needed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.