A method of operating an elevator system is provided and includes recognizing that brakes of an elevator car fail to drop upon brake power being removed, temporarily hovering the elevator car in place to allow the elevator car to be emptied, controllably moving the elevator car in a direction of imbalance, which is defined in terms of relative weights of the elevator car and a counter-weight and torque applied to the elevator car for driving the elevator car upwardly or downwardly, to either a top or a bottom of a hoistway and confirming that the brakes are failing to drop or provide sufficient holding torque.


    Access

    Download


    Export, share and cite



    Title :

    ELEVATOR SYSTEM WITH BRAKE FAILURE RESPONSES


    Contributors:

    Publication date :

    2024-11-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



    ELEVATOR SYSTEM WITH BRAKE FAILURE RESPONSES

    MILLETT STEVEN MICHAEL | European Patent Office | 2025

    Free access

    Elevator system with brake failure response

    MILLETT SUSAN M | European Patent Office | 2024

    Free access

    Brake failure protection elevator

    LUO JIAWEN | European Patent Office | 2021

    Free access

    Elevator brake failure protection device and system

    XIANG JIAN / YU QUANJUN | European Patent Office | 2023

    Free access

    ELECTROMAGNETIC DEVICE FOR ELEVATOR BRAKE, ELEVATOR BRAKE AND ELEVATOR SYSTEM

    GAO GUOCHEN / SHEN YUWEI / XI XIN | European Patent Office | 2023

    Free access