Patents by Inventor Rathina Rajarajan

Rathina Rajarajan 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).

  • Methods and apparatus to repair a rotor disk for a gas turbine
    Patent number: 8602738
    Abstract: Embodiments of the invention can provide methods and apparatus to repair a rotor disk for a gas turbine. In one embodiment, a method to repair a rotor disk for a gas turbine is provided, wherein the rotor disk can include a base and at least one dovetail slot between a pair of dovetail walls. The method can include identifying one or more cracks on the base of the rotor disk, and removing one or more cracks by providing one or more fillets on the base of the rotor disk. Further, the method can include providing one or more conic cuts on the base of the rotor disk between the pair of dovetail walls of at least one dovetail slot.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: December 10, 2013
    Assignee: General Electric Company
    Inventors: Rathina Rajarajan, Desai Tushar Sharadchandra, Santhanagopalakrishnan Babu, Akkur Marigowda Satish, Michael Byron Neikirk
  • Methods and Apparatus to Repair a Rotor Disk for a Gas Turbine
    Publication number: 20120237349
    Abstract: Embodiments of the invention can provide methods and apparatus to repair a rotor disk for a gas turbine. In one embodiment, a method to repair a rotor disk for a gas turbine is provided, wherein the rotor disk can include a base and at least one dovetail slot between a pair of dovetail walls. The method can include identifying one or more cracks on the base of the rotor disk, and removing one or more cracks by providing one or more fillets on the base of the rotor disk. Further, the method can include providing one or more conic cuts on the base of the rotor disk between the pair of dovetail walls of at least one dovetail slot.
    Type: Application
    Filed: May 3, 2012
    Publication date: September 20, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Rathina Rajarajan, Desai Tushar Sharadchandra, Santhanagopalakrishnan Babu, Akkur Marigowda Satish, Michael Byron Neikirk
  • Methods and apparatus to repair a rotor disk for a gas turbine
    Patent number: 8182229
    Abstract: Embodiments of the invention can provide methods and apparatus to repair a rotor disk for a gas turbine. In one embodiment, a method to repair a rotor disk for a gas turbine is provided, wherein the rotor disk can include a base and at least one dovetail slot between a pair of dovetail walls. The method can include identifying one or more cracks on the base of the rotor disk, and removing one or more cracks by providing one or more fillets on the base of the rotor disk. Further, the method can include providing one or more conic cuts on the base of the rotor disk between the pair of dovetail walls of at least one dovetail slot.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: May 22, 2012
    Assignee: General Electric Company
    Inventors: Rathina Rajarajan, Desai Tushar Sharadchandra, Santhanagopalakrishnan Babu, Akkur Marigowda Satish, Michael Byron Neikirk
  • METHODS AND APPARATUS TO REPAIR A ROTOR DISK FOR A GAS TURBINE
    Publication number: 20090180885
    Abstract: Embodiments of the invention can provide methods and apparatus to repair a rotor disk for a gas turbine. In one embodiment, a method to repair a rotor disk for a gas turbine is provided, wherein the rotor disk can include a base and at least one dovetail slot between a pair of dovetail walls. The method can include identifying one or more cracks on the base of the rotor disk, and removing one or more cracks by providing one or more fillets on the base of the rotor disk. Further, the method can include providing one or more conic cuts on the base of the rotor disk between the pair of dovetail walls of at least one dovetail slot.
    Type: Application
    Filed: January 14, 2008
    Publication date: July 16, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Rathina Rajarajan, Desai Tushar Sharadchandra, Santhanagopalakrishnan Babu, Akkur Marigowda Satish, Michael Byron Neikirk