초록 ▼

An auxiliary door opening device comprises an extendible motor driven rotatable output shaft that engages and rotates a pivot shaft of a conventional door closing mechanism. The pivot shaft is drivingly connected to a pair of pivotally connected arms of the door closing mechanism, such that rotation

An auxiliary door opening device comprises an extendible motor driven rotatable output shaft that engages and rotates a pivot shaft of a conventional door closing mechanism. The pivot shaft is drivingly connected to a pair of pivotally connected arms of the door closing mechanism, such that rotation of the pivot shaft causes the arms of the door closing device to pivot, urging the door open. The door opening device is activated by a remote switching device so that a handicapped person may open the door with a minimum of effort. A limit switch causes the motor to shut off and the output shaft to retract out of engagement with the pivot shaft when the door is fully opened. A solenoid apparatus holds the door open long enough to allow a handicapped person to pass through the door before allowing the door closing mechanism to urge the door closed. When not actuated by the switching device, the door opens manually and the door closing mechanism controls door closing in its normal manner, unaffected by the door opening device.

대표청구항 ▼

An auxiliary power-assisted door opening device for use in connection with a door closing mechanism that includes a pair of pivotally connected arms extending between a door and a door jamb and rotation control means connected to at least one of the arms for urging the arms to pivot so as to close t

An auxiliary power-assisted door opening device for use in connection with a door closing mechanism that includes a pair of pivotally connected arms extending between a door and a door jamb and rotation control means connected to at least one of the arms for urging the arms to pivot so as to close the door at a controlled rate of speed, wherein the auxiliary door opening device comprises: electromechanical drive means adapted to be mounted on the door or door jamb adjacent the rotation control means for positively pivoting the arms of the door closing mechanism so as to open the door when the drive means is activated, said electromechanical drive means comprising an electrical motor having a rotatable output shaft and a gear mechanism operably coupling the rotation control means to the output shaft of the motor, such that rotation of the output shaft causes the gear mechanism to mechanically drive the rotation control means to open the door; and selective activation means for activating the drive means to automatically open the door.