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1. 发明授权

US4774389A Intrusion detector switch system with wire bristle switch controls 失效
标题翻译：入侵检测器开关系统，带刷毛开关控制
公开(公告)号：US4774389A
公开(公告)日：1988-09-27
申请号：US161379
申请日：1988-02-22
申请人： Lewis A. Spivey
发明人： Lewis A. Spivey
IPC分类号： G08B13/08 , G08B29/18 , H01R13/54 , H01H3/16
CPC分类号： G08B29/22 , G08B13/08
摘要： The problem of false alarms in a burglar alarm system caused by inadvertent opening of a sensing switch is resolved by providing a burglar alarm system switch with a wire brush contact surface on one switch member of a pair affixed to movable and fixed building parts. The switch parts are so constructed to mate the wire brush as one contact surface in brushing contact with the other switch member contacting surface thereby assuring good contact through any oxidized surface layers. Furthermore, when the switch members are retained in mated closed circuit condition, a significant number of the wire brush members make electric contact to establish the necessary closed conductive path to prevent the burglar alarm from sounding and to maintain it even if slight dimensional changes cause the switch members to move relative to each other. The wire brush contact permits the switch to have greater tolerance to misalignments in installation and occuring after installation in response to various physical movements such as thermal or humidity dimensional changes or forceful changes in position of the building structure from stresses of various kinds.
摘要翻译：通过在一对固定到可移动和固定的建筑部件的一个开关构件上提供具有电刷接触表面的防盗报警系统开关来解决由于意外开启感应开关引起的防盗报警系统中的假警报的问题。开关部件被构造成使电线刷作为一个接触表面与另一个开关构件接触表面刷接触，从而确保通过任何氧化的表面层的良好接触。此外，当开关构件保持在配合闭合状态时，大量的电线刷构件进行电接触以建立必要的闭合导电路径，以防止防盗报警器发出声音并保持其即使轻微的尺寸变化导致开关构件相对于彼此移动。钢丝刷接触允许开关对于安装中的未对准具有更大的公差，并且响应于诸如热或湿度尺寸变化的各种物理运动或建筑结构的位置从各种应力的强力变化而在安装之后发生。

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