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Position detecting sensor

  • US 20040189287A1
  • Filed: 11/28/2003
  • Published: 09/30/2004
  • Est. Priority Date: 11/28/2002
  • Status: Abandoned Application
First Claim
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1. A position detecting sensor comprising:

  • a first magnet having a first pole and a second pole;

    a second magnet having a first pole and, a second pole and positioned near the first magnet, the first pole of the second magnet facing the second pole of the first magnet, the first pole of the first magnet being the same as the first pole of the second magnets and the second pole of the first magnet being the same as the second pole of the second magnet; and

    a magnetic detecting element in the vicinity of the first and second magnets, wherein a magnetic flux density detected in a zone including the magnetic detecting element while a detected body is away from the position detecting sensor more than a predetermined distance is greater than a magnetic flux density detected in the zone while the detected body is positioned near at least one side of the position detecting sensor by the predetermined distance.

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