A revolving door system comprising a shaft 2 with a plurality of door attachment members 4 and a drive system including a drive motor and a sprag clutch mechanism.  The sprag clutch is coupled to the shaft and moveable between a first disengaged position in which the drive motor is disengaged from the shaft and a second position in which the sprag clutch couples the drive motor to the shaft.  The sprag clutch moves to engaged position upon force applied by a user to a door above a threshold upon which drive motor is coupled to rotate the door.  Sensors may detect the approach and direction of user to turn on the motor in either a first or second direction depending on direction of travel.  A speed control system may be provided by means of a magnet and Hall effect transducer.  The initial inertia force threshold may be adjustable.  A remote service management control may monitor the number of revolutions of the door and service time intervals.  Electronic door locks may be included.


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    Title :

    A revolving door system


    Publication date :

    2019-06-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English



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