公开(公告)号：US3768086A

公开(公告)日：1973-10-23

申请号：US3768086D

申请日：1971-11-22

Applicant: NORRIS INDUSTRIES

Inventor： POWELL D ,  WEEKS C

IPC: G08B13/08

CPC classification number: G08B13/08

Abstract: An alarm has a housing attachable to a door and provided with a spring-operated actuator restrained by a striker that is either attached to doorway structure or so attached to the housing as to move relative thereto out of its actuator-restraining position as the door is opened. The alarm includes an operating member movable by the actuator when driven by its spring into an operative position only from a set position as the door is opened, in which operative position it closes an electric circuit to an audible signal. The operating member is wholly within the housing in its circuit-closing position and the housing has a plurality of identical, manually rotatable buttons exposed on its cover to a selected one of which an arm is connected that is operable to reset the operating member thereby to open the circuit.

Abstract translation: 警报器具有可连接到门的壳体，并且设置有由撞针限制的弹簧操作的致动器，所述撞击器附接到门口结构或者如此附接到壳体以相对于其移动而不是其致动器限制位置，因为门是 开了 该报警器包括一个操作构件，该操作构件可以由致动器在其门被打开时从其弹簧驱动到仅从设定位置进入操作位置时可移动，其中操作位置将电路关闭到可听见的信号。 操作构件完全位于壳体内的电路关闭位置，并且壳体具有多个相同的可手动旋转的按钮，其暴露在其盖上至所选择的一个臂中，臂被连接以可操作以重置操作构件，从而 打开电路。