Patents by Inventor Öystein Krogen

Öystein Krogen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electrical machine stator and rotor
    Patent number: 6849985
    Abstract: A stator or a rotor for an electrical machine comprises a plurality of circumferentially separated, radially extending teeth, wherein each tooth having a single winding and is provided with an axially and radially extending reluctance barrier to increase the reluctance of each tooth regarding propagation of a magnetic field not interacting with the winding of said tooth.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: February 1, 2005
    Assignee: Höganäs AB
    Inventors: Alan G. Jack, Barrie Mecrow, Öystein Krogen
  • Induction machine stator
    Patent number: 6815863
    Abstract: A stator (1) for an electrical induction machine comprises at least two stator sections (2, 3) at two different axial positions, each section having a plurality of circumferentially separated, radially extending teeth (6, 7) and each tooth having a single winding. The stator sections are mutually phase-shifted so as to reduce the effect of other harmonics than the working harmonics. In a stator having two separated stator sections, these are physically phase-shifted by 180° electrical±an angle related to skew, and then have their electrical supplies also shifted by 180° electrical.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: November 9, 2004
    Assignee: Höganäs AB
    Inventors: Alan G. Jack, Barrie Mecrow, Öystein Krogen