Patent ID: 9163446
Filing Date: 2015-10-20
Classification: E05F,E05Y,Y10T

Abstract:
1. A door control apparatus in electrical communication with an electromechanical door holder for operative connection to a hinged door, the electromechanical door holder including a door closer for applying a closing action to the hinged door and a solenoid disposed in the door closer operable to close a valve to prevent the flow of hydraulic fluid in the door closer to cause the hinged door to stay open, the hinged door being above a floor and pivotally movable over a range of open positions between a closed position and a fully open position and being releasable by a person manually opening the door at a release position anywhere in the range of open positions, and the door being mounted to a structure surrounding the door in the closed position, the structure including a door frame and a wall, the door control apparatus comprising: control circuitry; and a sensor adapted to detect a person, object, or both in a first designated area proximate to the door, the sensor connected to the control circuitry, wherein the sensor is operable to signal the control circuitry upon a detection event, wherein upon a detection event the control circuitry is operable to signal the solenoid to close the valve and cause the electromechanical door holder to hold the door open at a release position that is variable and is not preset, such that the release position may automatically, without manually actuating a switch, be located at any position within the range of open positions of the door.