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Magnetic position sensor having shaped pole pieces at least partially formed of a non-magnetic material for producing a magnetic field having varying magnetic flux density along an axis

  • US 6,798,195 B2
  • Filed: 12/19/2002
  • Issued: 09/28/2004
  • Est. Priority Date: 12/14/2001
  • Status: Expired due to Fees
First Claim
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1. A magnetic sensor, comprising:

  • a magnetic circuit including;

    first and second magnets spaced apart to define an air gap extending along an axis; and

    first and second shaped pole pieces at least partially formed of a non-magnetic material and at least partially disposed within said air gap adjacent respective ones of said first and second magnets to produce a magnetic field having varying magnetic flux density along said axis; and

    a magnetic flux sensor disposed within said magnetic field and operable to sense said varying magnetic flux density along said axis.

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