Abstract: A door controlling device for opening and closing a door in a wall having a linkage connecting between the door and a wall and an arm pivotable about a pin. A drive member on the pin has a stand by position which does not interfere with the manual movement of the door. Rotation of the drive member in one direction rotates the arm around the pin to move the door to the open position and rotation of the drive member in the opposite direction rotates the arm around the pin to move the door to the closed position.

Abstract: To open a door which is latched in the closed position, a rotatable door handle must be turned to unlatch the door, after which the door can be opened. A door unlatching device is provided to rotate the handle, and a door operator moves the door from the closed position to the open position. An assist will provide additional force to move the door out of the door frame to the ajar position. A microprocessor receives input from all three devices and provides for the unification of the movements of the components to unlatch and open the door.

Abstract: A device is provided for unlatching a door which is latched into a door frame where the door latch assembly includes an elongate lever arm rotatable about an axis from a first latched orientation to second unlatched orientation. The device includes a cable having a first end attachable to the distal end of the lever arm and a second end attached to a take up spool. The take up spool is rotated by a motor in a first direction to take up the cable and thereby draw the lever arm from the first latched orientation to the second unlatched orientation and thereafter rotate in the second direction to release the cable and allow the lever arm to return from the second unlatched orientation to the first latched orientation.

Abstract: 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.

Abstract: A door controlling device for opening and closing a door in a wall has a first arm, one end of which is mounted to the wall and the other end of which is pivotally attached to the second end of a second arm. The first end of the second arm is pivotally attached to the top of a door and is adapted for rotation about a horizontal axis at the first end thereof. An electric motor attached to the device has a shaft which drives a gear train, and an output shaft of the gear train is connected to the input end of an electrically operated clutch. The output shaft of the clutch is connected to the first end of one of the arms such that upon the simultaneous engagement of the clutch and the energizing of the motor, that arm will be rotated about the horizontal axis at the first end and will cause the door to be opened or closed.

Abstract: A door controlling device for opening and closing a door in a wall has a first arm, one end of which is mounted to the wall and the other end of which is pivotally attached to the second end of a second arm. The first end of the second arm is pivotally attached to the top of a door and is adapted for rotation about a horizontal axis at the first end thereof. An electric motor attached to the device has a shaft which drives a gear train, and an output shaft of the gear train is connected to the input end of an electrically operated clutch. The output shaft of the clutch is connected to the first end of one of the arms such that upon the simultaneous engagement of the clutch and the energizing of the motor, that arm will be rotated about the horizontal axis at the first end and will cause the door to be opened or closed.

Abstract: A door controlling device for opening and closing a door in a wall has a first arm, one end of which is mounted to the wall and the other end of which is pivotally attached to the second end of a second arm. The first end of the second arm is pivotally attached to the top of a door and is adapted for rotation about a horizontal axis at the first end thereof. An electric motor attached to the device has a shaft which drives a gear train, and an output shaft of the gear train is connected to the input end of an electrically operated clutch. The output shaft of the clutch is connected to the first end of one of the arms such that upon the simultaneous engagement of the clutch and the energizing of the motor, that arm will be rotated about the horizontal axis at the first end and will cause the door to be opened or closed.

Abstract: A picket fence assembly having upper and lower rails each with a plurality of non-circular holes receiving a plurality of vertical pickets through respective aligned holes and with the pickets having transverse through-holes in alignment and receiving a rigid transverse rod preventing rotations of the pickets.