Patents by Inventor Constantinos Ravanis

Constantinos Ravanis 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: 11572789
    Abstract: A turbine blade for a gas turbine engine has an airfoil including leading and trailing edges joined by spaced-apart pressure and suction sides to provide an external airfoil surface extending from a platform in a spanwise direction to a tip. The external airfoil surface is formed in substantial conformance with multiple cross-sectional profiles of the airfoil defined by a set of Cartesian coordinates set forth in Table 1, the Cartesian coordinates provided by an axial coordinate scaled by a local axial chord, a circumferential coordinate scaled by a local axial chord, and a span location.
    Type: Grant
    Filed: November 11, 2021
    Date of Patent: February 7, 2023
    Assignee: PRATT & WHITNEY CANADA CORP.
    Inventors: Constantinos Ravanis, Vincent Paradis, Eduardo Hawie, Michael Papple, Marc-Antoine Mailloux-Labrousse, Othmane Leghzaouni, Philippe Boyer, Jasrobin Grewal
  • Patent number: 10480335
    Abstract: A compressor turbine includes a vane having an airfoil with a profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 2. The X and Y values are distances, which when smoothly connected by an appropriate continuing curve, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil shape.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: November 19, 2019
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Constantinos Ravanis
  • Publication number: 20190071986
    Abstract: A compressor turbine includes a vane having an airfoil with a profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 2. The X and Y values are distances, which when smoothly connected by an appropriate continuing curve, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil shape.
    Type: Application
    Filed: September 1, 2017
    Publication date: March 7, 2019
    Inventor: Constantinos RAVANIS
  • Patent number: 7632074
    Abstract: A single stage high pressure turbine blade includes an airfoil having a profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 2. The X and Y values are distances, which when smoothly connected by an appropriate continuing curve, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil shape.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: December 15, 2009
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Constantinos Ravanis, Krishan Mohan, Sami Girgis, Edward Vlasic
  • Publication number: 20090274558
    Abstract: A single stage high pressure turbine blade includes an airfoil having a profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 2. The X and Y values are distances, which when smoothly connected by an appropriate continuing curve, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil shape.
    Type: Application
    Filed: November 28, 2006
    Publication date: November 5, 2009
    Inventors: Constantinos Ravanis, Krishan Mohan, Sami Girgis, Edward Vlasic
  • Patent number: 7534091
    Abstract: A single stage high pressure turbine blade includes an airfoil having a profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 2. The X and Y values are distances, which when smoothly connected by an appropriate continuing curve, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil shape.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: May 19, 2009
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Constantinos Ravanis, Sami Girgis, Krishan Mohan
  • Publication number: 20080056902
    Abstract: A single stage high pressure turbine blade includes an airfoil having a profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 2. The X and Y values are distances, which when smoothly connected by an appropriate continuing curve, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil shape.
    Type: Application
    Filed: September 5, 2006
    Publication date: March 6, 2008
    Inventors: Constantinos Ravanis, Sami Girgis, Krishan Mohan
  • Patent number: 7306436
    Abstract: A single stage high pressure turbine blade includes an airfoil having a profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 2. The X and Y values are distances, which when smoothly connected by an appropriate continuing curve, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil shape.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: December 11, 2007
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Sami Girgis, Constantinos Ravanis
  • Publication number: 20070207035
    Abstract: A single stage high pressure turbine blade includes an airfoil having a profile substantially in accordance with at least an intermediate portion of the Cartesian coordinate values of X, Y and Z set forth in Table 2. The X and Y values are distances, which when smoothly connected by an appropriate continuing curve, define airfoil profile sections at each distance Z. The profile sections at each distance Z are joined smoothly to one another to form a complete airfoil shape.
    Type: Application
    Filed: March 2, 2006
    Publication date: September 6, 2007
    Inventors: Sami Girgis, Constantinos Ravanis