Patents by Inventor Nicolas Grivas

Nicolas Grivas 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).

  • Vane attachment arrangement
    Patent number: 7238003
    Abstract: A simplified vane mounting arrangement by which a vane ring can be pre-assembled to an inner support ring before being installed in an outer casing.
    Type: Grant
    Filed: August 24, 2004
    Date of Patent: July 3, 2007
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Remy Synnott, Nicolas Grivas, Alan Juneau, David Glasspoole
  • Vane attachment arrangement
    Publication number: 20060045745
    Abstract: A simplified vane mounting arrangement by which a vane ring can be pre-assembled to an inner support ring before being installed in an outer casing.
    Type: Application
    Filed: August 24, 2004
    Publication date: March 2, 2006
    Inventors: Remy Synnott, Nicolas Grivas, Alan Juneau, David Glasspoole
  • Shrouded turbine blades with locally increased contact faces
    Patent number: 7001152
    Abstract: A one-piece blade for a turbine section of a gas turbine engine, the blade comprising a root, an airfoil and a shroud. The shroud extends generally perpendicularly from a tip of the airfoil and is defined by a pair of opposed bearing faces and a pair of opposed non-bearing faces. The bearing faces each have a contact portion adapted to contact a shroud of an adjacent blade. The shroud has a substantially constant nominal thickness and the bearing faces have a substantially constant face thickness across the contact portion, the face thickness being greater than the nominal thickness. The transition between the face thickness and the nominal thickness is substantially discontinuous.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: February 21, 2006
    Assignee: Pratt & Wiley Canada Corp.
    Inventors: René Paquet, Nicolas Grivas, Richard Brandt
  • Shrouded turbine blades with locally increased contact faces
    Publication number: 20050079058
    Abstract: A one-piece blade for a turbine section of a gas turbine engine, the blade comprising a root, an airfoil and a shroud. The shroud extends generally perpendicularly from a tip of the airfoil and is defined by a pair of opposed bearing faces and a pair of opposed non-bearing faces. The bearing faces each have a contact portion adapted to contact a shroud of an adjacent blade. The shroud has a substantially constant nominal thickness and the bearing faces have a substantially constant face thickness across the contact portion, the face thickness being greater than the nominal thickness. The transition between the face thickness and the nominal thickness is substantially discontinuous.
    Type: Application
    Filed: October 9, 2003
    Publication date: April 14, 2005
    Inventors: Rene Paquet, Nicolas Grivas, Richard Brandt
  • Blade inlet cooling flow deflector apparatus and method
    Publication number: 20050025622
    Abstract: An internally cooled turbine blade including at least one deflector extending into an air cavity generally from said first wall towards the second wall for diverting cooling air away from the first wall and generally towards the second wall to thereby improve cooling flow distribution among a plurality of cooling path inlets.
    Type: Application
    Filed: July 28, 2003
    Publication date: February 3, 2005
    Inventors: Toufik Djeridane, Michael Clyde Papple, Nicolas Grivas