Patents by Inventor Friedrich-Wilhelm Sommer

Friedrich-Wilhelm Sommer 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).

  • Transformer, choke and the like
    Patent number: 4899122
    Abstract: A transformer, choke or the like includes a magnetic core assembled from two lamination packets formed of laminations layered in a given direction. The lamination packets have outer contacting surfaces defining a partition line therebetween. A weld seam transverse to the given direction fastens the contacting surfaces to one another and overlaps the partition line. A fastening element fastens the transformer, choke or the like to a floor or a wall. Upright tabs formed on the fastening element have free edges alongside the partition line being partially welded with the weld seam.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: February 6, 1990
    Assignee: ABB CEAG Licht- und Stromversorgungstechnik GmbH
    Inventor: Friedrich-Wilhelm Sommer