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Vehicle alarm system

  • US 4,015,237 A
  • Filed: 06/16/1976
  • Issued: 03/29/1977
  • Est. Priority Date: 06/18/1975
  • Status: Expired due to Term
First Claim
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1. A vehicle alarm system for a vehicle having a plurality of operating parts, a plurality of sensors each monitoring a corresponding operating part and an audio reproduction system including an audio frequency amplifier, said vehicle alarm system comprisinga switching circuit for controlling the supply of audio signals to the audio frequency amplifier of the audio reproduction system of a vehicle;

  • andan alarm signal supply circuit connected between the sensors and the audio reproduction system of the vehicle for producing an alarm signal when an abnormal condition is detected in an operating part of the vehicle by the corresponding one of the sensors, said switching circuit cutting off the supply of audio signals to the audio frequency amplifier and supplying an alarm signal to said audio frequency amplifier when a sensor provides an abnormal condition signal indicating the occurrence of an abnormal condition in an operating part.

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