Patents by Inventor Asa Hammarsten

Asa Hammarsten 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).

  • Condenser body for the field control of the connection of a transformer bushing
    Patent number: 5198622
    Abstract: The invention relates to a condenser body for field control in transformer bushings and the connection of the body to the conductor of a transformer winding for transformers used in HVDC converter plants. The condenser body is arranged as a solid of revolution with concentrically laid condenser layers. It is formed from one end with an outwardly-directed straight frustum of a cone and from the other end with an inwardly-directed straight frustum of a cone.
    Type: Grant
    Filed: May 12, 1992
    Date of Patent: March 30, 1993
    Assignee: Asea Brown Boveri AB
    Inventors: Asa Hammarsten, Lennart Strandberg, Bengt-Olof Stenestam