Otis Elevator Company

Blair J Cohen

John P Wesson

James A Rivera

Richard E Kulak

Michael J Tracey

Hugh James O'Donnell

David W McKee

Valery G Sheynkman

Christopher J Elliott

John D Barrett

John Randazzo

Duane R Stupienski

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.

Elevator evacuation deterrent device

A sheave liner for an elevator system sheave that supports a hoist rope with an elevator car suspended therefrom is replaced without having to remove the hoist ropes and without having to hang the elevator car by means other than the hoist ropes. The existing liner is cut and removed while the elevator car is suspended from the hoist ropes resting on the sheave. The new liner is rotated into its position and two ends of the liner are joined by either a mechanical bond or by a room temperature adhesive bond.

Method of replacing sheave liner

Growing community of inventors

Manchester, CT, United States of America

Blair J Cohen