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Vehicle ignition and alarm system

  • US 4,689,603 A
  • Filed: 03/31/1986
  • Issued: 08/25/1987
  • Est. Priority Date: 03/31/1986
  • Status: Expired due to Term
First Claim
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1. An integrated keyless ignition and alarm system for a motor vehicle having a battery-powered ignition circuit including an ignition coil/distributor and a starter solenoid/motor, and also having a battery-powered alarm circuit including an alarm-sounding means and tamper-sensing means, said integrated system comprising a battery, said ignition circuit comprising (a) a digital key pad having digital code-controlled means, connected to said battery and, in response to the first entry of a predetermined first digital code, to enable a (b) starter circuit comprising a breathing-force sensor and an alcohol-sensitive means which prevent the flow of power from said battery through said starter circuit in the absence of a satisfactory breathing force and in the presence of a breathing force containing excess alcohol, and (c) means connecting said starter circuit to the starter solenoid/motor of the vehicle, said digital key pad also comprising relay means responsive to the second entry of said predetermined first digital code for interrupting the connection of said battery to said starter circuit to disable said motor, said battery-powered alarm circuit comprising (d) said digital key pad connected to said battery and, in response to the first entry of a predetermined second digital code, to enable (e) tamper-sensing means associated with (f) alarm means, said digital key pad also comprising relay means responsive to the second entry of said predetermined second digital code for interrupting the connection of said battery to said alarm circuit to disable said tamper-sensing means and alarm means.

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