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    • 10. 发明授权
    • Vandal alarm system for parking meters
    • 用于停车仪表的破坏式报警系统
    • US4297683A
    • 1981-10-27
    • US127589
    • 1980-03-06
    • Ralph R. Roberts
    • Ralph R. Roberts
    • G07F17/24G08B13/02G08B25/10G08B19/00G08B25/00
    • G07F17/24G08B13/02G08B25/10
    • Vandalism and robbery of parking meters have become big problems. The unauthorized entry into the coin box area or striking of the housing as well as bending the support pipe makes it desirable to apprehend the robbers and/or vandals. Repair of the parking meter or support may be required due to such vandalism. A radio transmitter is adapted to send simultaneously two signals to a receiver which is constantly "on". The received signal indicates unauthorized entry or vandalism to a parking meter and to the particular parking meter from which the signal is sent. Switches are actuated at an opening of the timer compartment and/or coin box area. A switch is also actuated when the supporting post is bent. A timer is placed in this circuit so that only after a determined time interval is a signal sent of the bending of a post. On new installations a tensioned wire is placed in the pipe and is actuated when the pipe is cut or severely bent.
    • 故障破坏和抢劫停车场已成为大问题。 未经授权进入硬币盒区域或撞击外壳以及弯曲支撑管道使得理想的是抢夺强盗和/或破坏者。 由于这种破坏行为,可能需要修理停车收费表或支持。 无线电发射机适于同时发送两个信号到不断“接通”的接收机。 接收到的信号表示未经授权的进入或破坏停车计费器和发送信号的特定停车计费表。 开关在定时器室和/或硬币盒区域的开口处被致动。 当支撑柱弯曲时,开关也被致动。 定时器被放置在该电路中,使得仅在确定的时间间隔之后是发送一个柱的弯曲的信号。 在新设备上,将张紧的线材放置在管道中,并在管道被切割或严重弯曲时被致动。