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1. 发明授权

US4450326A Anti-theft vibration detector switch and system 失效
标题翻译：防盗检测开关和系统
公开(公告)号：US4450326A
公开(公告)日：1984-05-22
申请号：US312690
申请日：1981-10-19
申请人： Curtis G. Ledger
发明人： Curtis G. Ledger
IPC分类号： G01P13/00 , H01H35/14 , H01H35/02
CPC分类号： H01H35/144 , G01P13/00
摘要： In a preferred embodiment, a steel ball having a surface coating of gold is magnetically held against each of negative and positive electrical switch contacts within a fenced-in space substantially filled with silicone fluid, the electrical switch contacts being alternately arranged in a circular series and being connected to a logic cell and mechanism adapted to count pulses resulting from each of breaking and making electrical contacts when the ball is jolted by vibration and to reset if at-least two consecutive pulses do not occur within half a second, and to send an alarm signal to a transmitter that transmits an alarm signal to a radio receiver, magnetic force lines being provided by a pole of a large bar magnet positioned behind the electrical switch contacts and a like-charge repelling-pole of a smaller bar magnet in front of and spaced-from the electrical switch contacts and ball.
摘要翻译：在优选实施例中，具有金表面涂层的钢球被磁性地保持在基本上填充有硅酮流体的围栏空间内的负极和正极电开关触点中，电开关触点交替地以圆形串联布置，连接到逻辑单元和机构，适用于当球由于振动而颠簸并且如果在半秒内不发生至少两个连续的脉冲而重新计数由每个断开和产生的电触点产生的脉冲，并发送将报警信号发送到向无线电接收机发送报警信号的发射机，磁力线由位于电气开关触点后面的大型磁棒的极点和位于电气开关触点之前的较小磁棒的类似电荷驱动极提供并与电气开关触点和球隔开。

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