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Disengagement detecting device and method

  • US 20060109092A1
  • Filed: 11/30/2004
  • Published: 05/25/2006
  • Est. Priority Date: 12/09/2003
  • Status: Abandoned Application
First Claim
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1. A disengagement detection device for detecting the disengagement of a wheel from a vehicle, comprising:

  • detection means for detecting the magnetism inside said vehicle at or near said wheel mounted on said vehicle; and

    judgment means for judging the disengagement of said wheel from said vehicle based on whether the value of said magnetism detected with said detection means changed by a prescribed threshold value or more, and whether a first stable state centered around a first value changed to a second stable state centered around a second value.

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