Patents by Inventor Gregory Lee Landry

Gregory Lee Landry 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: 6908279
    Abstract: A wedge-like nozzle radial loading pin, preferably formed from steel, that contacts the bottom of a reaction nozzle along a graduated, that is inclined or stepped, surface. This contact will secure the reaction nozzle radially inward against the retaining surface of the carrier dovetail with sufficient force to maintain the designed airfoil pre-twist.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: June 21, 2005
    Assignee: General Electric Company
    Inventors: Christopher Walter Sullivan, David Orus Fitts, Robert James Bracken, Gregory Lee Landry
  • Patent number: 6786699
    Abstract: Airfoils and grooves on the rotor or carrier for the airfoils have generally complementary dovetail shapes. The airfoils are installed in the grooves by sliding the bases of the airfoils along the circumferential grooves into final circumferential positions. At each circumferential position, a pin is driven between the base of the airfoil and the bottom of the groove to displace the airfoil radially into a final radially secured position taking up the clearance necessary to enable sliding movement of the airfoils about the groove. A first tool is used to drive each pin in a generally tangential direction by hammering on the end of the tool, transmitting an axial force to the pin. When the circumferential clearance of the last installed airfoil is insufficient to permit further use of a tangentially oriented tool to install additional airfoils, a second tool having an angled head is disposed into the groove to engage the pin.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: September 7, 2004
    Assignee: General Electric Company
    Inventors: David Elliott Shapiro, Steven Kerry Williams, Charles Byron Adams, Gregory Norman Fournier, Gregory Lee Landry, Maurice David Fournier
  • Publication number: 20040001757
    Abstract: Airfoils and grooves on the rotor or carrier for the airfoils have generally complementary dovetail shapes. The airfoils are installed in the grooves by sliding the bases of the airfoils along the circumferential grooves into final circumferential positions. At each circumferential position, a pin is driven between the base of the airfoil and the bottom of the groove to displace the airfoil radially into a final radially secured position taking up the clearance necessary to enable sliding movement of the airfoils about the groove. A first tool is used to drive each pin in a generally tangential direction by hammering on the end of the tool, transmitting an axial force to the pin. When the circumferential clearance of the last installed airfoil is insufficient to permit further use of a tangentially oriented tool to install additional airfoils, a second tool having an angled head is disposed into the groove to engage the pin.
    Type: Application
    Filed: June 26, 2002
    Publication date: January 1, 2004
    Inventors: David Elliot Shapiro, Steven Kerry Williams, Charles Byron Adams, Gregory Norman Fournier, Gregory Lee Landry, Maurice David Fournier
  • Publication number: 20030223872
    Abstract: A bucket cover includes circumferentially disposed arcuate cover segments each having discrete arcuate inner, intermediate and outer cover elements for spanning the tips of a plurality of turbine buckets. Each segment includes circumferentially spaced radial openings through the elements for receiving the tenons at the bucket tips. The intermediate element has a cavity or recess formed between circumferentially spaced webs which define the openings through the intermediate element for weight reduction purposes. In final assembly, the tips of the tenons are automatically peened to retain the elements on the buckets and excess material is machined to provide a smooth, continuous arcuate, circumferentially extending outer surface. The cavities are bounded by the webs, forward and rear end walls and the inner and outer surfaces of the outer and inner elements, respectively.
    Type: Application
    Filed: May 31, 2002
    Publication date: December 4, 2003
    Inventors: Boris I. Frolov, Anil K. Tolpadi, Gregory Lee Landry
  • Patent number: 6644924
    Abstract: A bucket cover includes circumferentially disposed arcuate cover segments each having discrete arcuate inner, intermediate and outer cover elements for spanning the tips of a plurality of turbine buckets. Each segment includes circumferentially spaced radial openings through the elements for receiving the tenons at the bucket tips. The intermediate element has a cavity or recess formed between circumferentially spaced webs which define the openings through the intermediate element for weight reduction purposes. In final assembly, the tips of the tenons are automatically peened to retain the elements on the buckets and excess material is machined to provide a smooth, continuous arcuate, circumferentially extending outer surface. The cavities are bounded by the webs, forward and rear end walls and the inner and outer surfaces of the outer and inner elements, respectively.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: November 11, 2003
    Assignee: General Electric Company
    Inventors: Boris I. Frolov, Anil K. Tolpadi, Gregory Lee Landry