Patents by Inventor Henrik Orskov Pedersen

Henrik Orskov Pedersen 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).

  • Patent number: 9590481
    Abstract: A rotor (2) for an electric motor, which rotor (2) includes a plurality of laminated rotor sheets (4) arranged in layers and each provided with slots (6, 10); a number of permanent magnets (8) arranged within magnet slots (10) in the laminated rotor sheets (4), where an end area (16) of each magnet slot (10) is a magnet free area. The rotor (2) also includes a plurality of rotor bars (14) arranged in rotor bar slots (6) and a rotor sheet band (22) provided between the end area (16) and the adjacent rotor bar slot (6). At least one notch (28, 29) extending from the edge (21) of the rotor bar slot (6) and/or from the edge (21?) of the end area (16) divides the rotor sheet band (22) into a first area (24) and a second area (26). The smallest width (D1) of the first area (24) is smaller than the smallest width (D2) of the second area (26).
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: March 7, 2017
    Assignee: GRUNDFOS MANAGEMENT A/S
    Inventors: Finn Jensen, Henrik Ørskov Pedersen
  • Publication number: 20140147309
    Abstract: A rotor (2) for an electric motor, which rotor (2) includes a plurality of laminated rotor sheets (4) arranged in layers and each provided with slots (6, 10); a number of permanent magnets (8) arranged within magnet slots (10) in the laminated rotor sheets (4), where an end area (16) of each magnet slot (10) is a magnet free area. The rotor (2) also includes a plurality of rotor bars (14) arranged in rotor bar slots (6) and a rotor sheet band (22) provided between the end area (16) and the adjacent rotor bar slot (6). At least one notch (28, 29) extending from the edge (21) of the rotor bar slot (6) and/or from the edge (21?) of the end area (16) divides the rotor sheet band (22) into a first area (24) and a second area (26). The smallest width (D1) of the first area (24) is smaller than the smallest width (D2) of the second area (26).
    Type: Application
    Filed: March 29, 2012
    Publication date: May 29, 2014
    Inventors: Finn Jensen, Henrik Ørskov Pedersen
  • Patent number: 8067872
    Abstract: The invention relates to a permanent magnet rotor for an electric motor, in which the permanent magnets inside the rotor extend parallel to the rotation axis of the rotor, and in the area of the radially outer longitudinal edges of the permanent magnets, grooves that are open to the outside are formed on the outer periphery of the rotor. These groves are each, in a peripheral direction, slanted or curved with regard to the longitudinal edge of the adjacent permanent magnets. The center line of each groove intersects the longitudinal edge of the adjacent permanent magnet at least once. The grooves on the outside of the rotor have, in the peripheral direction, a smaller width than in an area of the groove situated radially further inside, and the cross-sectional shape of the groove is constant over the length of the rotor. The invention also relates to a method for producing a rotor of the aforementioned type.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: November 29, 2011
    Assignee: Grundfos a/s
    Inventors: Henrik Ørskov Pedersen, Keld Folsach Rasmussen, Kjeld Hellegaard
  • Publication number: 20090127961
    Abstract: The invention relates to a permanent magnet rotor for an electric motor, in which the permanent magnets inside the rotor extend parallel to the rotation axis of the rotor, and in the area of the radially outer longitudinal edges of the permanent magnets, grooves that are open to the outside are formed on the outer periphery of the rotor. These groves are each, in a peripheral direction, slanted or curved with regard to the longitudinal edge of the adjacent permanent magnets. The center line of each groove intersects the longitudinal edge of the adjacent permanent magnet at least once. The grooves on the outside of the rotor have, in the peripheral direction, a smaller width than in an area of the groove situated radially further inside, and the cross-sectional shape of the groove is constant over the length of the rotor. The invention also relates to a method for producing a rotor of the aforementioned type.
    Type: Application
    Filed: November 7, 2005
    Publication date: May 21, 2009
    Applicant: GRUNDFOS A/S
    Inventors: Henrik Orskov Pedersen, Keld Folsach Rasmussen, Kjeld Hellegaard