Patents by Inventor Mark W. Rettig

Mark W. Rettig 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).

  • Tube sheet pressure retaining plug for water tube condensers, power boilers, and heat exchangers
    Patent number: 7757642
    Abstract: The present invention concerns a boiler tube plug, which is used to plug holes left in drum walls after removal of failed boiler tubes in industrial power boilers, condensers, or heat exchangers. The present invention concerns a new and innovative boiler tube sheet plug for power boilers addressing the needs in the art. The boiler tube plug of the present invention may be used in evaporators, condensers, heat exchangers and other power boilers as appropriate as known in the art.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: July 20, 2010
    Inventors: Mark W. Rettig, Michael D. Sullivan
  • Tube sheet pressure retaining plug for water tube condensers, power boilers, and heat exchangers
    Publication number: 20080092358
    Abstract: The present invention concerns a boiler tube plug, which is used to plug holes left in drum walls after removal of failed boiler tubes in industrial power boilers, condensers, or heat exchangers. The present invention concerns a new and innovative boiler tube sheet plug for power boilers addressing the needs in the art. The boiler tube plug of the present invention may be used in evaporators, condensers, heat exchangers and other power boilers as appropriate as known in the art.
    Type: Application
    Filed: September 7, 2006
    Publication date: April 24, 2008
    Inventors: Mark W. Rettig, Michael D. Sullivan