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Local alarm system tamper protection device

  • US 5,519,756 A
  • Filed: 02/09/1995
  • Issued: 05/21/1996
  • Est. Priority Date: 12/15/1994
  • Status: Expired due to Fees
First Claim
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1. In a telephone operated security alarm system which utilizes a telephone service box connected to telephone service lines, said security alarm system including a security alarm box electrically connected to said telephone service box for transmitting alarm signals to personnel at a discrete alarm monitoring station over said telephone service lines, a tamper protection device comprising:

  • a secured service enclosure for enclosing said telephone service box and an exposed portion of said telephone service lines to prohibit direct access to said telephone service box and said telephone service line portion by an intruder;

    at least one vibration sensor mounted within said secured service enclosure to detect small and large amplitude vibrations of said service enclosure caused by any physical tampering of said secured service enclosure including that portion enclosing said telephone lines by an intruder to generate a first signal in response to said tampering; and

    a connector circuit electrically connected between said secure alarm box and said secured service enclosure to energize said at least one vibration sensor and to transmit said first signal from said service enclosure to said alarm system, wherein said security alarm system generates an alarm signal for transmission over said telephone service lines to announce an intruder to said personnel at said remote monitoring station.

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