Patents by Inventor Daniel C Burns

Daniel C Burns 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).

  • Condenser tube-to-tubesheet joint improvement
    Patent number: 10357816
    Abstract: A tube-to-tubesheet joint for steam condensers having a plurality of holes drilled in condenser tubesheets, a plurality of 8 mil triangular cut serrations in the wall surface of each hole, locating the serrations in a set positioned centrally of the wall surface, inserting a tube end into each hole, and forming a mechanical interference fit between tube wall and hole wall surface. In modified embodiment for thick tubesheets, plural sets of serrations with sets spaced apart may be formed in tubesheet holes.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: July 23, 2019
    Inventor: Daniel C Burns
  • Apparatus and method for monitoring steam condenser air inleakage
    Patent number: 7975484
    Abstract: A method and apparatus reliable, accurate and continuous measurement of air inleakage into the condenser of a steam-electric power plant with convenient monitoring by power plant personnel.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: July 12, 2011
    Inventors: John M Burns, Daniel C Burns, Jeffrey S Burns