Patents by Inventor James M. Duke

James M. Duke 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).

  • Heat exchanger with leak detecting double wall tubes
    Patent number: 4249593
    Abstract: A straight shell and tube heat exchanger utilizing double wall tubes and three tubesheets to ensure separation of the primary and secondary fluid and reliable leak detection of a leak in either the primary or the secondary fluids to further ensure that there is no mixing of the two fluids.
    Type: Grant
    Filed: January 19, 1979
    Date of Patent: February 10, 1981
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: George Bieberbach, Donald J. Bongaards, Alfred Lohmeier, James M. Duke
  • Heat exchanger with double wall tubes and three tube sheets
    Patent number: 4237968
    Abstract: A heat exchanger incorporating double-walled tubes utilizes three tube sheets to provide economical leak detection.
    Type: Grant
    Filed: May 2, 1979
    Date of Patent: December 9, 1980
    Assignee: Westinghouse Electric Corp.
    Inventor: James M. Duke