公开(公告)号：US4855715A

公开(公告)日：1989-08-08

申请号：US121179

申请日：1987-11-16

申请人： Albert R. Sevigny

发明人： Albert R. Sevigny

IPC分类号： G08B13/08

CPC分类号： G08B13/08 ,  H01H2009/189

摘要： An alarm system mounted in a casing intended to be installed in a door. The casing includes a power supply, a noise producing device and a circuit for connecting the power supply to the noise producing device. The circuit includes a key operating device and a mechanism responsive to a detecting knob located on the stile of a door. The key operating device comprises a tumbler switch and a cam operated by the switch which is mounted in the circuit. The mechanism responsive to the knob comprises a hingely mounted plate connected to a spring for biassing the plate in the direction of the cam and the switch. The switch can close the circuit when the door opens and the knob projects outside the stile of the door. Additional cams, tumbler switches and circuits may be combined for producing a variety of alarm producing conditions.

摘要翻译： 安装在外壳中的一个安装在门上的报警系统。 壳体包括电源，噪声产生装置和用于将电源连接到噪声产生装置的电路。 电路包括键操作装置和响应于位于门的立柱上的检测旋钮的机构。 钥匙操作装置包括转接开关和由安装在电路中的开关操作的凸轮。 响应于旋钮的机构包括铰链安装板，其连接到弹簧，用于沿着凸轮和开关的方向偏压板。 当门打开时，开关可以关闭电路，并且旋钮在门的外侧突出。 可以组合附加的凸轮，制动开关和电路以产生各种报警产生条件。