Multi-car elevator using an exclusion zone and preventing inter-car collision
US9708158B2 · kind B2 · utility
4Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2012 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Jun 10, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B9/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a multi-car elevator, if two vertically adjacent cars among the cars are designated first and second cars, then: a zone that is a distance in which the second car can be stopped in response to an abnormality, and into which the first car is not permitted to enter is set as an exclusion zone of the second car; a position before which it is necessary for the first car to stop is set as a stopping limit position of the first car; and a plurality of threshold values that progressively detect the abnormal approach are set so as to enable the first car to decelerate and stop before the stopping limit position of the first car.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.