Foldable handrail and safety switch arrangement on top of an elevator car
US8365870B2 · kind B2 · utility
13Cited by
20References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2012 |
| Grant date | Feb 5, 2013 |
| Priority date | — |
| Expiry date | Mar 19, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B13/16
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator car includes a foldable handrail mounted on top of the car. Safety switches are associated with the foldable handrail including a first safety switch and a second safety switch. The first safety switch is closed only when the handrail is folded in a fully retracted position. The second safety switch is closed when the handrail is unfolded in a fully deployed position. A safety chain is associated with the first and second safety switches for supplying power to an elevator drive system in a normal operation or an inspection operation depending on the state of the first and second safety switches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.