An overspeed brake system for use in an elevator powerhead is provided. A brake rotor is attachable to a cable drum to rotate with a cable drum. A brake member selectively engages the brake rotor upon transition of an actuation lever from a first position to a second position. A biasing member acts on the actuation lever to bias the actuation lever from the first position towards the second position. A latch arrangement has a first orientation maintaining the actuation lever in the first position and a second orientation releasing the actuation lever for transitioning from the first position to the second position. The latch arrangement transitions from the first orientation to the second orientation when a speed sensing arrangement senses that the rotational speed of the cable drum is at least a predetermined rotational speed.


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    Title :

    ELEVATOR BREAKING DEVICE, POWERHEAD AND METHODS


    Additional title:

    METHODES, BLOC-MOTEUR ET DISPOSITIF DE FREINAGE D'ASCENSEUR



    Publication date :

    2019-12-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / B66D Haspeln , CAPSTANS / B66B Aufzüge , ELEVATORS



    ELEVATOR BRAKING DEVICE, POWERHEAD AND METHODS

    SCHAEUBLE JR DONALD ORVILLE / JANUS ALAN THOMAS / SCHERMETZLER JUSTIN ROBERT | European Patent Office | 2019

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