Patents by Inventor Pierre Duden

Pierre Duden 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).

  • Grit blast nozzle for surface preparation of tube
    Patent number: 6350185
    Abstract: The invention resides in a method and apparatus for conditioning an inner surface of a tube. A pressurized mixture of air and grit and is supplied to a nozzle having an opening with a given diameter through which diameter the pressurized grit and air pass. An elongated nozzle adapter is connected to said nozzle. The nozzle adapter has a passage having a diameter substantially equal to the diameter of said nozzle and said nozzle adapter is connected to said nozzle such that the opening in said nozzle and said passage are aligned with one another. The nozzle adapter is inserted into a tube and is axially moved and rotated in order to condition the inner surface thereof with a pressurized mixture of air and grit.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: February 26, 2002
    Assignee: Space Systems/Loral, INc.
    Inventors: Brian Gregory Robins, Pierre Duden