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Non-invasive optical blood alcohol concentration reader and vehicle ignition interlock system and method

  • US 5,743,349 A
  • Filed: 09/23/1996
  • Issued: 04/28/1998
  • Est. Priority Date: 09/23/1996
  • Status: Expired due to Fees
First Claim
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1. A vehicle ignition interlock system apparatus for preventing an alcohol impaired operator from starting a vehicle'"'"'s engine, said apparatus comprising:

  • a non-invasive, blood alcohol concentration tester member, said tester member comprising an electromagnetic energy light source, an incident light collector, a human tissue receptacle, an emanating light collector, a light absorption analyzer, and a blood alcohol concentration generator; and

    electrical and electronic circuitry responsive to a signal generated by said tester member, said electrical and electronic circuitry comprising a blood alcohol concentration comparator for generating a first signal indicative of an operator'"'"'s non-impaired state for enabling start-up of a vehicle'"'"'s engine, and for generating a second signal indicative of an operator'"'"'s impaired state for disabling start-up of a vehicle'"'"'s engine.

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