公开(公告)号：US4075588A

公开(公告)日：1978-02-21

申请号：US628849

申请日：1975-11-05

申请人： Nathan Verger ,  Gerhard Schmidt

发明人： Nathan Verger ,  Gerhard Schmidt

IPC分类号： H01H36/00

CPC分类号： H01H36/00

摘要： An apparatus for switching an alarm-signalling device connectable to a protective circuit so as to signal an alarm when a door or the like is displaced from its closed position in a jamb or the like by an intruder, in which the switching apparatus is mounted in the door and jamb or the like. The switching apparatus includes a switch connectable to the protective circuit, mounted in a housing installable so as to be recessed in the jamb, and a metal plate installable so as to be recessed in the side of the door and disposed opposite the switch when the door is closed in the jamb. The switch includes a pair of contacts disposed in one end of the housing, a magnet reciprocally movable in the other end of the housing, and magnetized such that opposite faces thereof define poles of opposite polarity, a hollow metal plate mounted in the housing intermediate the pair of contacts and the magnet, and a connector extending through the hollow metal plate and connecting the magnet to one of the contacts for movement therewith. When the metal plate is positioned opposite the housing, upon closing the door or the like in the jamb or the like, the magnet is attracted towards the metal plate and moves the contact connected thereto so as to compress the contacts in a rolling and wiping action to close the protective circuit. When the door and metal plate mounted therein are displaced from their closed position in the jamb, the magnet is attracted to the hollow metal plate and moves the contact connected thereto so as to open the protective circuit which actuates the alarm-signalling device.

公开(公告)号：US3940725A

公开(公告)日：1976-02-24

申请号：US543672

申请日：1975-01-24

申请人： Nathan Verger ,  Gerhard Schmidt

发明人： Nathan Verger ,  Gerhard Schmidt

IPC分类号： H01H36/00

CPC分类号： H01H36/0073

摘要： An apparatus for switching an alarm-signalling device which is connectable to a protective circuit so as to signal an alarm when a door or the like is displaced from its closed position in a jamb or the like by an intruder, in which the switching apparatus is mounted in the door and jamb or the like. The switching apparatus includes a switch which is connectable to the protective circuit, which is mounted in a housing which is installable so as to be recessed in the jamb, and a magnet which is magnetized such that opposite faces thereof define poles of opposite polarity, which is mounted in a housing which is installable so as to be recessed in the side of the door and disposed opposite the switch when the door is closed in the jamb. The switch includes a pair of contacts disposed in one end of the housing, a metal plate mounted in the other end of the housing, and a magnet which is reciprocally movable in the housing, which is magnetized such that opposite faces thereof define poles of opposite polarity, and which is disposed so that one pole thereof faces the metal plate, which pole is of the same polarity as the pole of the external magnet which is disposed opposite the portion of the housing in which the metal plate is mounted when the external magnet is positioned opposite the housing, so that the switch magnet is repelled by the external magnet when the external magnet is so positioned such that the switch magnet bears against the contacts to compress the contacts in a rolling and wiping action to close the protective circuit; when the door and external magnet are displaced from their closed position in the jamb, the switch magnet is attracted to the metal plate such that the contacts are released to open the protective circuit which actuates the alarm-signalling device.

摘要翻译： 一种用于切换警报信号装置的装置，其可连接到保护电路，以便当门或类似物通过入侵者从其关闭位置偏移时，发出警报，其中开关装置是 安装在门和侧板等中。 开关装置包括可连接到保护电路的开关，该开关安装在可安装成在侧壁上凹陷的壳体中;磁体被磁化，使得其相对面限定相反极性的极， 安装在壳体中，该壳体可安装成在门的侧面凹陷并且当门在侧柱中关闭时与开关相对设置。 该开关包括设置在壳体的一端中的一对触点，安装在壳体的另一端的金属板和磁体，该磁体可在壳体中往复运动，该磁体被磁化，使得其相对的面限定相反的极 极性，并且其一个极面向金属板，该极与外部磁体的极相同极性，外部磁体的极与外部磁体的安装金属板的部分相对设置，当外部磁体 与壳体相对定位，使得当外部磁体定位时，开关磁体被外部磁体排斥，使得开关磁体抵靠触头，以滚动和擦拭动作来压缩触点以闭合保护电路; 当门和外部磁体从侧面的关闭位置偏移时，开关磁体被吸引到金属板，使得触点被释放以打开致动警报信号装置的保护电路。