07650970 is referenced by 4 patents and cites 27 patents.

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.

Title
Elevator door lock sensor device including proximity sensor elements in a selected geometric pattern
Application Number
11/570892
Publication Number
7650970 (B2)
Application Date
September 27, 2004
Publication Date
January 26, 2010
Inventor
Thomas Malone
Avon
CT, US
Michael Tracey
Cromwell
CT, US
Jacek F Gieras
Glastonbury
CT, US
Bryan Robert Siewert
Westbrook
CT, US
Pei Yuan Peng
Manchester
CT, US
Muhidin A Lelic
Manchester
CT, US
Agent
Carlson Gaskey & Olds PC
Assignee
Otis Elevator Company
CT, US
IPC
B66B 13/14
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