05819877 is referenced by 13 patents and cites 6 patents.

A simplified elevator car door lock assembly locks an elevator car door if the car is outside a landing zone and there is an attempt to open those doors. The car doors are connected to the hoistway doors by a pair of vanes mounted on the car door and a pair of rollers mounted on the hoistway door. A third vane is attached to the car door and follows a cam path on the car door to lock the car doors if the car is not in a landing zone. Conversely, the third vane senses if the car is in a landing zone and does not lock the car door if it is moved.

Title
Elevator evacuation deterrent device
Application Number
630793
Publication Number
5819877
Application Date
June 28, 1996
Publication Date
October 13, 1998
Inventor
Blair J Cohen
Manchester
CT, US
Duane R Stupienski
Granby
CT, US
Valery G Sheynkman
West Hartford
CT, US
Michael J Tracey
Cromwell
CT, US
Richard E Kulak
Bristol
CT, US
James A Rivera
Bristol
CT, US
Assignee
Otis Elevator Company
CT, US
IPC
B66B 13/14
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