Patent Number: 6,253,879

Title: Apparatus and method of determining overspeed of an elevator car

Abstract: An apparatus and method for determining the speed of an elevator car. A radar speed sensor (30) is provided determining the velocity of an elevator car (2). The speed sensor produces a signal which is processed by a processor (52) and compared to a threshold speed value by speed detection module (70). The speed detection module produces an overspeed signal (72) triggering the operation of actuator (34) and safety brake (26).

Inventors: Skalski; Clement Alexander (Avon, CT), Vecchiotti; Alberto (Middletown, CT)

Assignee: Otis Elevator Company

International Classification: B66B 5/04 (20060101); B66B 5/06 (20060101); B66B 005/06 ()

Expiration Date: 07/03/2018