Patents by Inventor Nathan G. Christensen

Nathan G. Christensen 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).

  • Seamless multi-section pressure vessel
    Patent number: 8020722
    Abstract: A lightweight, ergonomically beneficial, hydrodynamic, and volumetrically efficient hybrid pressure vessel having at least two longitudinally extending, semi-cylindrical sections with flattened rib portions at a common interface between the sections. Additional longitudinally extending sections may be employed to provide additional internal volume. One or more apertures extend through the ribs to provide communication between sections. The pressure vessel comprises a cast metal material, optionally including exterior reinforcing structure for containing internal pressure.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: September 20, 2011
    Inventors: Kevin W. Richards, Nathan G. Christensen
  • SEAMLESS MULTI-SECTION PRESSURE VESSEL
    Publication number: 20090050635
    Abstract: A lightweight, ergonomically beneficial, hydrodynamic, and volumetrically efficient hybrid pressure vessel having at least two longitudinally extending, semi-cylindrical sections with flattened rib portions at a common interface between the sections. Additional longitudinally extending sections may be employed to provide additional internal volume. One or more apertures extend through the ribs to provide communication between sections.
    Type: Application
    Filed: August 20, 2007
    Publication date: February 26, 2009
    Applicant: ALLIANT TECHSYSTEMS INC.
    Inventors: Kevin W. Richards, Nathan G. Christensen