Patents by Inventor James W. Wobschall

James W. Wobschall 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).

  • Cooling of electromagnetic apparatus
    Patent number: 5210513
    Abstract: An electromagnetic apparatus such as a transformer or a single winding inductor is provided with a cooling arrangement. The apparatus has a magnetic core and a coil winding disposed about and carried by a leg of the core. The magnetic core has legs connected to the leg that carries the coil winding and these legs have flat surfaces that directly contact a flat surface of a metallic heat sink to thereby provide a direct heat conductive path from the legs to the heat sink. Heat generated in the coil winding is transferred to the heat sink via the leg that carries the coil winding and then to the heat sink via the legs that directly engage the heat sink. Heat generated in the magnetic core due to hysteresis or eddy current loss is also transferred to the heat sink.
    Type: Grant
    Filed: March 20, 1992
    Date of Patent: May 11, 1993
    Assignee: General Motors Corporation
    Inventors: Iftikhar A. Khan, James W. Wobschall