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Vehicle maintenance sensing device and method therefor

  • US 6,978,675 B2
  • Filed: 02/02/2004
  • Issued: 12/27/2005
  • Est. Priority Date: 02/02/2004
  • Status: Active Grant
First Claim
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1. A vehicle maintenance device for acoustical and vibration sensing of an engine comprising:

  • a flexible wand member having a channeling running the length of the flexible wand member;

    a housing coupled to a first end of the flexible wand member;

    a handle section coupled to a second end of the flexible wand member, the handle section having an internal cavity section; and

    sensing circuitry for performing acoustical and vibration sensing of an engine of the vehicle wherein the sensing circuitry comprises;

    a power supply for powering the sensing circuitry;

    a first microphone exposed to the environment coupled to the power supply;

    a second microphone sealed from the environment coupled to the power supply; and

    a switching device coupled to the first microphone and the second microphone to activate and deactivate the first microphone and the second microphone.

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