| 摘要 |
An assist for use with a motorized door operating device to assist in the opening of a door during its movement from the closed position to an ajar position, and to assist in the closing of the door during its movement from the ajar position to the closed position. The device includes a connector mounted on one of the door and the wall and a motorized catch on the other of the door and wall for engaging and releasing the connector. During a door closing cycle, the assist remains inactive until the catch engages the connector, after which the motorized catch is moved in a first direction to move the door from the ajar position to the closed position. Upon the commencement of a door opening cycle, and upon completion of any unlatching cycle whereby any door latch retaining the door is released, the catch is moved in a second direction for moving the door from the closed position to the ajar position. Once the door is in the ajar position, the catch is disengaged from the connector and the door is allowed to move through the remainder of the door opening cycle without interference from the assist. |
