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Alcohol immobilizer having an emergency drive option

  • US 8,469,135 B2
  • Filed: 09/11/2008
  • Issued: 06/25/2013
  • Est. Priority Date: 10/05/2007
  • Status: Expired due to Fees
First Claim
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1. A device for preventing a start-up or initial operation of a motor vehicle, by a vehicle driver who is under the influence of alcohol, comprising:

  • a device for determining an alcohol content in the breath, blood, tissue, sweat of the skin, or in the interstitial tissue fluid of the vehicle driver;

    an immobilizer for preventing the start-up or initial operation of the vehicle when the alcohol content determined by the device exceeds a specified threshold value; and

    means for bypassing or disabling the immobilizer by the driver to allow operation of the vehicle when the alcohol content determined by the device exceeds the specified threshold value,wherein the means includes a repeated actuation of an ignition key of the vehicle.

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