Patents by Inventor Roger Siljeholm

Roger Siljeholm 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: 7522399
    Abstract: A surge arrester including a stack of a plurality of cylindrical varistor blocks that are arranged one after the other in the axial direction of the varistor blocks between an upper end electrode and a lower end electrode. Arranged around the stack are clamping members of an insulating material including at least three loops of continuously wound fiber that connect the upper end electrode to the lower end electrode as well as a bursting-protective bandage in the form of a plurality of rings wound of fiber, and a surrounding, electrically insulating, outer casing of rubber or other polymeric material. The loops are wound from glass fiber and exhibit an asymmetrical cross section.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: April 21, 2009
    Assignee: ABB Technology Ltd.
    Inventors: Roger Siljeholm, Kerstin Ekeroth Reijm
  • Publication number: 20060227484
    Abstract: A surge arrester including a stack of a plurality of cylindrical varistor blocks that are arranged one after the other in the axial direction of the varistor blocks between an upper end electrode and a lower end electrode. Arranged around the stack are clamping members of an insulating material including at least three loops of continuously wound fiber that connect the upper end electrode to the lower end electrode as well as a bursting-protective bandage in the form of a plurality of rings wound of fiber, and a surrounding, electrically insulating, outer casing of rubber or other polymeric material. The loops are wound from glass fiber and exhibit an asymmetrical cross section.
    Type: Application
    Filed: April 28, 2004
    Publication date: October 12, 2006
    Applicant: ABB TECHNOLOGY LTD.
    Inventors: Roger Siljeholm, Kerstin Ekeroth Reijm
  • Patent number: 6496349
    Abstract: A line arrester, which is articulately suspended from a transmission or distribution network and on which a stabilizing device is arranged. The stabilizing device increases the mass-moment of inertia of the line arrester so as to contract movements of the line arrester deviating from the vertical line. The stabilizing device has a mass center which substantially conforms to a vertical line which passes through the mass center of the line arrester.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: December 17, 2002
    Assignee: ABB AB
    Inventor: Roger Siljeholm
  • Patent number: 6356428
    Abstract: A suspension device for a line arrester in an air-insulated transmission line including two suspension parts which support the line arrester such that its longitudinal axis deviates from the vertical line. One of the suspension parts includes a disconnecting device which, when releasing, permits the line arrester a swinging motion under the influence of a force of gravity caused by the weight of the line arrester itself. And, one of the suspension parts includes a damping member which influences the line arrester with a force directed against the swinging motion during at least part of the swinging motion. The damping member may include a damping plate, one or more friction linings, or a flexible wire.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: March 12, 2002
    Assignee: Abb AB
    Inventors: Sven Akervall, Roger Siljeholm