Automatic door opening device,申请号US19790108676-传众专利搜索

Automatic door opening device

申请公布号：US4348835(A)

申请号：US19790108676

申请日期：1979.12.31

申请公布日期：1982.09.14

申请人：

JONES, STANLEY;NYENBRINK, WILLARD

发明人：JONES, STANLEY;NYENBRINK, WILLARD

分类号：E05F15/12;(IPC1-7):E05F15/00

主分类号：E05F15/12

摘要：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.