Patents by Inventor Rex E. Koeppen

Rex E. Koeppen 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).

  • Method and apparatus for the continuous field annealing of amorphous metal transformer cores
    Patent number: 5310975
    Abstract: A method and apparatus are disclosed for the continuous annealing of amorphous metal cores of the type used in electrical transformers, and wherein the cores are heated in the presence of a magnetic field. The cores are transported serially along the length of a stationary electrically conductive rod which is located within a furnace, and such that the central openings of the cores face horizontally and the rod passes through the central openings of the advancing cores. Electrical current is caused to flow through a closed loop which includes the rod so as to generate an electromagnetic field along the length of the rod and so that the cores pass through the field while being heated.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: May 10, 1994
    Assignee: General Electric Company
    Inventors: Paul R. Eklund, George J. Heisler, Rex E. Koeppen