Patents by Inventor Kjell Walberg

Kjell Walberg 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).

  • Shielding for an inductive device with central first winding connection
    Patent number: 10026542
    Abstract: An inductive device including a first and second concentric winding wound around a center axis of the inductive device, where the second winding is placed outside of the first winding and provided in two separate parts a first upper part and a second lower part, wherein there is an opening between the first and second parts of the second winding and the first winding has a first winding connection that passes through said opening, the inductive device further including a concentric electric shielding element around the center axis and stretching all the way between the upper and the lower part of the second winding, the shielding element including a metal shield layer.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: July 17, 2018
    Assignee: ABB Schweiz AG
    Inventors: Kjell Walberg, Roger Eklund
  • SHIELDING FOR AN INDUCTIVE DEVICE WITH CENTRAL FIRST WINDING CONNECTION
    Publication number: 20170352472
    Abstract: An inductive device including a first and second concentric winding wound around a center axis of the inductive device, where the second winding is placed outside of the first winding and provided in two separate parts a first upper part and a second lower part, wherein there is an opening between the first and second parts of the second winding and the first winding has a first winding connection that passes through said opening, the inductive device further including a concentric electric shielding element around the center axis and stretching all the way between the upper and the lower part of the second winding, the shielding element including a metal shield layer.
    Type: Application
    Filed: December 16, 2015
    Publication date: December 7, 2017
    Inventors: Kjell Walberg, Roger Eklund