Patent ID: 9273505
Filing Date: 2016-03-01
CPC Classification: E05F,E05Y,E06B

Claim Text:
1. An automated door closure system to regulate the release and closure of a door in a door assembly, the door assembly including a primary door, a secondary door, and a door frame defining a doorway, the system comprising: a door closer connected between the secondary door and the door frame, the door closer including a cylinder having an operating rod extending from an end thereof, wherein the door closer biases the secondary door toward a closed position in the doorway; a control unit, including a motive device and a rod catch element, wherein the rod catch element is positioned in proximity to the operating rod so as to adjustably prevent the secondary door from being closed, wherein the motive device moves the rod catch element via a mechanical linkage, wherein the operating rod passes through the rod catch element, wherein the mechanical linkage includes a cam that is rotated by the motive device, and wherein when the cam is rotated into a locking position, the rod catch element is tilted relative to the operating rod, thereby preventing the operating rod from moving further relative to the rod catch element; and an automatic input sensor arranged to detect a condition pertaining to the use of the door assembly; wherein the control unit controls operation of the motive device, based on the detected condition, to move the rod catch element, thereby permitting the door closer to close the secondary door.