Elevator position apparatus
US5594219A · kind A · utility
13Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1995 |
| Grant date | Jan 14, 1997 |
| Priority date | — |
| Expiry date | Jan 23, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/3492
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator position apparatus for determining if an elevator car is positioned within a door zone includes an encoded medium disposed vertically in an elevator hoistway, at least two door zone sensors for providing first and second door zone sensor signals in response to the encoded medium, at least two leveling sensors for providing up and down sensor signals in response to the encoded medium and means for determining if the elevator car is positioned within the door zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.