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2. 发明授权

US5727407A Security device for exit doors 失效
标题翻译：出门安全装置
公开(公告)号：US5727407A
公开(公告)日：1998-03-17
申请号：US677769
申请日：1996-07-10
申请人： Nicholas Cowen
发明人： Nicholas Cowen
IPC分类号： E05B35/08 , E05B45/06 , E05B47/00 , E05B63/14 , E05B65/10 , E05B11/00
CPC分类号： E05B35/086 , E05B63/143 , E05B65/106 , E05B2047/0054 , E05B65/1006 , Y10T70/7446 , Y10T70/7458 , Y10T70/7768
摘要： An exit door has a security device comprising a flexible member, e.g. a chain, for connecting two locking devices which may be fixed on a door and doorway or on double doors. The first locking device is operable by a first key removable only when the locking device is activated and a second key removable only when the locking device is deactivated. One end of the flexible member is fixed to the second key and the other end is fixed to the second locking device, which is operable by the second key, being removable from the second locking device only when it is activated, and by a third key removable only when the second locking device is deactivated. The security devices are members of a series of such security devices in which the third key of each security device serves as the first key of the next security device in the series. The last key in the series is essential to operation of a control unit permitting use of a building provided with the exit door.
摘要翻译：出口门具有包括柔性构件的安全装置，例如。一个链条，用于连接可固定在门和门口或双门上的两个锁定装置。只有当锁定装置被启动时，第一锁定装置可以通过第一钥匙可操作，并且仅当锁定装置被停用时可以移除第二钥匙。柔性构件的一端固定到第二键上，而另一端固定到可由第二键操作的第二锁定装置，仅当其被激活时可从第二锁定装置移除，并且通过第三键只有当第二个锁定装置被停用时才可以移除。安全设备是一系列这样的安全设备的成员，其中每个安全设备的第三个密钥用作该系列中的下一个安全设备的第一个密钥。该系列的最后一个关键是操作一个允许使用设有出口门的建筑物的控制单元是至关重要的。

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