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1. 发明授权

US4143529A Tamperproof security door lock 失效
标题翻译：防撬安全门锁
公开(公告)号：US4143529A
公开(公告)日：1979-03-13
申请号：US795654
申请日：1977-05-10
申请人： Houston H. Brummett , Norma J. Brummett
发明人： Houston H. Brummett , Norma J. Brummett
IPC分类号： E05B55/00 , E05B55/14
CPC分类号： E05B55/005 , Y10T292/0986 , Y10T292/1028 , Y10T70/5513
摘要： A mechanism which may be added to existing conventional type cylindrical door locks at the time of manufacture thereof or to such locks already in the field with just a slight modification of the existing lock. The structure of the added security mechanism blocks the throw of the latch bolt and at the same time blocks the retractor to positively prevent opening of the lock by key, turning of the knob, or tampering with the latch. The security device is tamperproof as it is inserted into the interior of the cylindrical lock and can only be disengaged to allow entry from inside the building structure. The lock cannot be opened from the exterior of the door when the security device is engaged, by any conventional method or tampering. The mechanism includes a shaft or rod having an actuating knob on one end thereof which is removable for installation of the device and a guide and alignment pin together with an operating and blocking shaft with projecting wings on a plate member for engagement and disengagement with the latch of the conventional cylindrical lock. A special retaining and bias spring is mounted in appropriate holes in the lock device. A modified cover plate is also required which has a diamond-shaped aperture of sufficient size to receive the rod shaft, guiding pin, and retaining spring member.
摘要翻译：在制造时可以添加到现有的常规型圆柱形门锁的机构，或已经在现场的这种锁已经对现有的锁进行了轻微的修改。所附加的安全机构的结构阻止了闩锁的投掷，同时阻止牵开器通过钥匙，旋钮旋转或者撬动闩锁来阻止锁定的打开。安全装置在插入圆柱形锁的内部时是防篡改的，并且只能脱开以允许从建筑结构内部进入。当安全装置接合时，通过任何常规方法或篡改，锁不能从门的外部打开。该机构包括一个轴或杆，其一端具有一个致动旋钮，该致动旋钮可拆卸，用于安装该装置，一个引导和对准销与一个操作和阻塞轴一起，凸轮在翅片上用于与闩锁啮合的常规圆柱形锁。特殊的保持和偏置弹簧安装在锁定装置中的适当的孔中。还需要一种改进的盖板，其具有足够尺寸的菱形孔以容纳杆轴，引导销和保持弹簧构件。

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