Patents by Inventor Dax Au

Dax Au 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: 7854123
    Abstract: The pattern relates to a cover for a turbomachine nozzle, the cover having a plurality of patterns each with an outline of triangular shape having a base and two vertices that are spaced downstream and interconnected by a side. For each pattern, the vertices present respective curved outlines and they are interconnected by a curved portion presenting a radius of curvature greater than the radii of curvature of the outlines of said vertices, each side being connected to the trailing edge of the cover via a curved outline presenting a radius of curvature greater than the radii of curvature of the outlines of the vertices and greater than the radius of curvature of the outline of the curved portion, and the vertices and the curved portion are inclined radially towards the inside of the cover, with the curved portion being radially offset outwards relative to the vertices.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: December 21, 2010
    Assignee: Snecma
    Inventors: Dax Au, Pascal Moise Michel Bigot, Pierre Briend, Pierre Philippe Marie Loheac
  • Patent number: 7581384
    Abstract: The invention relates to an annular cover for a turbomachine nozzle, the cover having a plurality of patterns extending a trailing edge of said cover and spaced apart circumferentially from one another, each pattern having an outline that is substantially triangular in shape, with a base formed by a portion of the trailing edge of the cover and a vertex spaced downstream from the base and connected thereto by two sides. For each pattern, the vertex presents an outline that is substantially curved; each side is connected to the trailing edge of the cover following an outline that is substantially curved having a radius of curvature that is greater than the radius of curvature of the outline of the vertex; and the outline of each of the sides includes at least one point of inflexion having a tangent that is substantially parallel to the base.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: September 1, 2009
    Assignee: SNECMA
    Inventors: Dax Au, Pascal Moise Michel Bigot, Pierre Briend, Pierre Philippe Marie Loheac
  • Publication number: 20080047273
    Abstract: The pattern relates to a cover for a turbomachine nozzle, the cover having a plurality of patterns each with an outline of triangular shape having a base and two vertices that are spaced downstream and interconnected by a side. For each pattern, the vertices present respective curved outlines and they are interconnected by a curved portion presenting a radius of curvature greater than the radii of curvature of the outlines of said vertices, each side being connected to the trailing edge of the cover via a curved outline presenting a radius of curvature greater than the radii of curvature of the outlines of the vertices and greater than the radius of curvature of the outline of the curved portion, and the vertices and the curved portion are inclined radially towards the inside of the cover, with the curved portion being radially offset outwards relative to the vertices.
    Type: Application
    Filed: June 7, 2007
    Publication date: February 28, 2008
    Applicant: SNECMA
    Inventors: Dax AU, Pascal Bigot, Pierre Briend, Pierre Loheac
  • Publication number: 20080041062
    Abstract: The invention relates to an annular cover for a turbomachine nozzle, the cover having a plurality of patterns extending a trailing edge of said cover and spaced apart circumferentially from one another, each pattern having an outline that is substantially triangular in shape, with a base formed by a portion of the trailing edge of the cover and a vertex spaced downstream from the base and connected thereto by two sides. For each pattern, the vertex presents an outline that is substantially curved; each side is connected to the trailing edge of the cover following an outline that is substantially curved having a radius of curvature that is greater than the radius of curvature of the outline of the vertex; and the outline of each of the sides includes at least one point of inflexion having a tangent that is substantially parallel to the base.
    Type: Application
    Filed: June 7, 2007
    Publication date: February 21, 2008
    Applicant: SNECMA
    Inventors: Dax Au, Pascal Moise Michel Bigot, Pierre Briend, Pierre Philippe Marie Loheac