System and method for detecting the state of an elevator cage
US7938233B2 · kind B2 · utility
9Cited by
7References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 20, 2006 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Apr 8, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/3492
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator system includes a lift cage, which is provided with a belt having markings disposed along the length thereof. A device for detecting at least the position, optionally, also the speed and the acceleration of the elevator cage, which is used to scan the markings, comprises a detector which is secured to the elevator cage and is displaced therewith. The detector is, preferably, arranged in such a manner that it detects the markings in one section of the belt which extend from the underloop of the carrier rollers on the elevator cage directly to a fixed point of the belt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.