Absolute position reference system for an elevator
US6435315B1 · kind B1 · utility
67Cited by
9References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 11, 2000 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Dec 11, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/3492
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Apparatus for determining the position of an elevator car within a hoistway that includes a code rail containing optically readable indicia that is being mounted within the hoistway adjacent to the path of travel of the car. At least one camera is mounted upon the car for movement therewith for scanning the code rail indicia and providing data indicative of the car's position to the car controllers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.