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Method of alarm to prevent vehicle thefts

  • US 4,821,309 A
  • Filed: 07/02/1986
  • Issued: 04/11/1989
  • Est. Priority Date: 07/09/1985
  • Status: Expired due to Term
First Claim
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1. A method for notifying a notifiee of an abnormality occurring in a vehicle which is equipped with a vehicle telephone system and an anti-theft system for detecting abnormal conditions occurring at the vehicle, comprising:

  • providing an operative connection between the telephone system and the anti-theft system so that the anti-theft system can provide a power-on signal and an alarm signal to the telephone system;

    placing the anti-theft system is an armed mode and the telephone system in a power-off mode when the vehicle owner leaves the vehicle;

    operating the anti-theft system in the armed mode so that it provides the power-on signal and the alarm signal through the operative connection to the telephone system when the anti-theft system detects an abnormal condition;

    operating the telephone system so that upon receipt of the power-on signal it switches to a power-on mode;

    storing in advance in a memory of the telephone system a telephone number of a notifiee to be called in the event of an abnormal condition occurring at the vehicle;

    operating the telephone system so that upon receipt of the alarm signal from the anti-theft system and switching to the power-on state, the telephone number of the notifiee is recalled from memory, and the telephone number is dialed to establish a communication state with the notifiee.

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