Elevator door lock sensor device including proximity sensor elements in a selected geometric pattern
US7650970B2 · kind B2 · utility
11Cited by
21References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2004 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | Sep 27, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B13/22
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator door lock assembly (30) includes a sensor device (40) for providing an indication of a properly locked door. A plurality of proximity sensor elements (42, 44) interact with activating elements (52, 54) when the door lock assembly (30) is properly locked. In disclosed examples, a specific geometric pattern of the sensor elements (42, 44) and the activating elements (52, 54) provides redundancy and tampering protection. In a disclosed example, an output from the sensor device (40) provides an indication of a condition of the door lock and a building level location of a plurality of sensor devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.