Otis Elevator Company

John Joseph Faup

Jesse R Richter

Troy R Chicoine

Frank P Morrisino

Frank E Dyer

Ali Bozorgzadeh

Wayne L Virkler

David Harvey Wolf

Microprocessor-based car door locking system includes an electromechanical door lock for elevator car doors having a latch-type rotary solenoid to move a plunger into locked and unlocked positions. In the locked position, the plunger engages a bracket mounted on the elevator car door. The door lock also includes a controller that integrates the door lock into the elevator system and provides failure management for the door lock. The door lock of the present invention does not require power during either the locked or unlocked state.

Car door locking system

An elevator safety arrangement for preventing further automatic movement of an elevator car upon the car exceeding a predetermined velocity when it is located within a predetermined distance of a landing at which a stop is to be made.

Elevator safety arrangement

Apparatus for the control system of an elevator in which the arrival of the elevator at the rated speed stopping distance from a landing at which it is to stop while traveling at less than the rated speed delays the initiation of a stopping operation for that landing until the car attains an optimum speed.

Elevator stop control arrangement

Growing community of inventors

Oradell, NJ, United States of America

John Joseph Faup