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Linear position sensor

  • US 6,304,078 B1
  • Filed: 09/08/2000
  • Issued: 10/16/2001
  • Est. Priority Date: 12/09/1998
  • Status: Expired due to Fees
First Claim
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1. A sensor for sensing movement of an attached movable object, comprising:

  • a) a first and second tapered magnets positioned adjacent each other and attached to the movable object, each magnet having a central portion that is thinner than both ends of the first and second magnets;

    b) a first and second pole piece, each having a first end and a second end, the first ends located spaced apart in parallel relationship about the central portion, the second ends located spaced apart;

    c) a first and second air gap formed between the first ends and the magnets; and

    d) a magnetic flux sensor positioned between the second ends for sensing a variable magnetic field representative of the position of the attached movable object.

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