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Electric magnetic detector of magnetic particles in a stream of fluid

  • US 5,384,535 A
  • Filed: 01/26/1993
  • Issued: 01/24/1995
  • Est. Priority Date: 01/27/1992
  • Status: Expired due to Fees
First Claim
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1. In an electrical magnetic detector adapted to be disposed in a passageway for a fluid to detect the presence of magnetic particles in said fluid, a magnet means comprising a cylindrical member having an axis and two polar masses of weakly magnetic material disposed along said axis surrounding opposite ends of the cylindrical member and spaced apart from each other by an air gap in which migration of said particles is concentrated, said two polar masses having external peripheral surfaces that converge toward each other and toward said axis;

  • the improvement in which said cylindrical member is constituted by two annular magnets of the same length separated by a ring of magnetic material and having on ends of said magnets opposite said ring of magnetic material polar masses of the same magnetic material as said ring and having the same thickness as each other.

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