Patents by Inventor David Duplissey

David Duplissey 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).

  • Patent number: 10371373
    Abstract: A boiler tube clamp including a first U-shaped midsection configured for pressing against one side of a boiler tube, a first hinge member arranged on one end of the first midsection, a threaded bolt hingedly attached to the other end of the first midsection, and a second U-shaped midsection configured for pressing against the other side of the boiler tube. The clamp further includes a second hinge member arranged on one end of the second midsection and hingedly connected to the first hinge member so that the first inner surface and the second inner surface close toward one another. A lip extends radially out from the second midsection and a jackscrew extends through the lip for adjusting the distance a boiler tube contained by the clamp extends into a boiler through a boiler header.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: August 6, 2019
    Assignee: National Boiler Service, Inc.
    Inventors: Kurt Johnson, Robert Hunter, David Duplissey
  • Publication number: 20170023238
    Abstract: A boiler tube clamp including a first portion having a first substantially U-shaped midsection with a first inner surface configured for receiving and pressing against one side of a boiler tube, a first hinge member arranged on one end of the first midsection, and a threaded bolt hingedly attached to the other end of the first midsection, and a second portion having a second substantially U-shaped midsection with a second inner surface configured for receiving and pressing against the other side of the boiler tube. The clamp further includes a second hinge member arranged on one end of the second midsection and hingedly connected to the first hinge member so that the first inner surface and the second inner surface close toward one another. An open slot is arranged at the other end of the second midsection configured for detachably receiving the threaded bolt. A lip extends radially out from an outer surface of the second midsection and arranged adjacent to an edge thereof.
    Type: Application
    Filed: October 7, 2016
    Publication date: January 26, 2017
    Inventors: Kurt Johnson, Robert Hunter, David Duplissey
  • Patent number: 8387252
    Abstract: A boiler tube clamp including a first portion having a first substantially U-shaped midsection with a first inner surface configured for receiving and pressing against one side of a boiler tube, a first hinge member arranged on one end of the first midsection, and a threaded bolt hingedly attached to the other end of the first midsection, and a second portion having a second substantially U-shaped midsection with a second inner surface configured for receiving and pressing against the other side of the boiler tube. The clamp further includes a second hinge member arranged on one end of the second midsection and hingedly connected to the first hinge member so that the first inner surface and the second inner surface close toward one another. An open slot is arranged at the other end of the second midsection configured for detachably receiving the threaded bolt. A lip extends radially out from an outer surface of the second midsection and arranged adjacent to an edge thereof.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: March 5, 2013
    Assignee: National Boiler Service, Inc.
    Inventors: Kurt Johnson, Robert Hunter, David Duplissey