Patents Represented by Attorney Ann Knab

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  • Permanent magnet field sources of radial orientation
    Patent number: 5028902
    Abstract: A permanent magnet structure comprises a flux source having a central cav wherein a highly uniform magnetic field is produced of radial orientation. The flux source comprises a pair of radially magnetized discs of MR material. The discs are coaxially aligned parallel to and separated from each other a given distance. A ring fabricated of passive ferromagnetic material circumscribes the peripheries of the discs, and cladding magnets cover the planar exterior surface of each disc.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: July 2, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Herbert A. Leupold, Ernest Potenziani, II