Patents by Inventor Gary Charles Liotta

Gary Charles Liotta 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).

  • Publication number: 20200072086
    Abstract: A method for constructing a variable nozzle assembly within a turbine engine that includes: constructing a variable nozzle sub-assembly; attaching the variable nozzle sub-assembly to a casing; and linking segments of a segmented shaft via an opening. Constructing the variable nozzle sub-assembly may include: attaching a downstream inner platform to a upstream inner platform; inserting an outer stem of a first segment through an outer stem opening formed through the downstream outer platform; connecting the first segment to the downstream outer platform by loading a first bearing about a protruding spherical shaped section of the outer stem; inserting the inner stem through an opening formed through the downstream inner platform while aligning sidewalls of the downstream and upstream outer platforms; mechanically securing the aligned sidewalls; and connecting the first segment to the downstream inner platform by loading a second bearing about a protruding spherical shaped section of the inner stem.
    Type: Application
    Filed: August 29, 2018
    Publication date: March 5, 2020
    Applicant: General Electric Company
    Inventors: Zachary John Snider, Gary Charles Liotta
  • Publication number: 20200072073
    Abstract: A turbine engine having a variable nozzle assembly that includes: a variable nozzle having an airfoil that extends radially across an annulus formed between inner and outer platforms; and a segmented shaft that translates a torque between segments included therewithin. The segmented shaft may include a first and second segment. The first segment of the segmented shaft may include: the airfoil of the variable nozzle; an outer stem extending from the outer end of the airfoil; and an inner stem extending from the inner end of the airfoil. A first and second connector may connect the first segment to the inner platform and outer platform, respectively. A third connector may connect the first segment to the second segment. The first and second connector may include a first and second spherical bearing, respectively. The third connector may include a first universal joint.
    Type: Application
    Filed: August 29, 2018
    Publication date: March 5, 2020
    Applicant: General Electric Company
    Inventors: Zachary John Snider, Gary Charles Liotta
  • Patent number: 10208764
    Abstract: A rotor wheel for an engine includes a plurality of impeller vanes and a plurality of fluid passages defined by adjacent impeller vanes. The fluid passages are radially disposed across at least a portion of the rotor wheel. One or more impeller inserts may be disposed within one or more of the plurality of fluid passages, respectively. The impeller inserts define an impeller passage with a passage shape that controls a flow of fluid through the one or more of the plurality of fluid passages.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: February 19, 2019
    Assignee: General Electric Company
    Inventors: Kiran Sreeram, John Herbert Dimmick, III, Gary Charles Liotta, John Robert Sech, Eric Richard Bonini, Patrick Shawn Reilly
  • Publication number: 20170248152
    Abstract: A rotor wheel for an engine includes a plurality of impeller vanes and a plurality of fluid passages defined by adjacent impeller vanes. The fluid passages are radially disposed across at least a portion of the rotor wheel. One or more impeller inserts may be disposed within one or more of the plurality of fluid passages, respectively. The impeller inserts define an impeller passage with a passage shape that controls a flow of fluid through the one or more of the plurality of fluid passages.
    Type: Application
    Filed: February 25, 2016
    Publication date: August 31, 2017
    Inventors: Kiran Sreeram, John Herbert Dimmick, III, Gary Charles Liotta, John Robert Sech, Eric Richard Bonini, Patrick Shawn Reilly
  • Patent number: 9540940
    Abstract: A system includes a multi-stage turbine. The multi-stage turbine has an interstage seal extending axially between a first turbine stage and a second turbine stage. The interstage seal has an upper body that extends from an upstream seating arm to a downstream seating arm. The upstream and downstream seating arms are designed to constrain movement of the interstage seal along a radial direction of the multi-stage turbine. The interstage seal also has a lower body that extends from a seating end to a hook end. The seating end is designed to constrain movement of the interstage seal along the radial direction. The hook end has a protrusion that extends crosswise relative to a base of the lower body. The hook end is designed to constrain movement of the interstage seal along the radial direction and an axial direction of the multi-stage turbine.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: January 10, 2017
    Assignee: General Electric Company
    Inventors: Gary Charles Liotta, Brian Denver Potter
  • Patent number: 9404376
    Abstract: A sealing component for reducing secondary airflow in a turbine system includes a first end segment configured to be disposed between, and retained in a radial direction by, a first land on a first rotor disk and a first turbine bucket platform operatively coupled to the first rotor disk. Also included is a second end segment configured to be disposed between, and retained in a radial direction by, a second land on a second rotor disk and a second turbine bucket platform operatively coupled to the second rotor disk. Further included is a main body portion extending axially from the first end segment to the second end segment.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: August 2, 2016
    Assignee: General Electric Company
    Inventors: Brian Denver Potter, Gary Charles Liotta
  • Patent number: 9217334
    Abstract: The present application provides a cover plate assembly for use with a rotor disk. The cover plate assembly may include a radial flange extending from the rotor disk, a flange aperture extending through the radial flange, a cover plate segment with a fastening aperture and a hook for receiving the radial flange, and a fastener extending through the flange aperture and the fastening aperture.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: December 22, 2015
    Assignee: General Electric Company
    Inventors: John Wesley Harris, Jr., Gary Charles Liotta
  • Patent number: 9175575
    Abstract: In one aspect, the present subject matter discloses a seal including a substrate material. The substrate material has a first portion having a first abradability and a second portion having a second abradability, the first abradability being different from the second abradability.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: November 3, 2015
    Assignee: General Electric Company
    Inventors: Stanley Frank Simpson, Gary Charles Liotta, Jeffrey Todd Knapp
  • Patent number: 9028206
    Abstract: A thermally actuated assembly for a gas turbine assembly for a gas turbine system includes a heat transfer component having a first portion and a second portion, wherein the first portion is disposed within a first cavity having a first temperature and the second portion is disposed in a second cavity having a second temperature, wherein the heat transfer component extends through a cavity wall, wherein the first temperature is greater than the second temperature. Also included is a temperature sensitive element disposed within the second cavity and in operable communication with the heat transfer component. Further included is a flow manipulating device disposed within the second cavity and configured to displace in response to a temperature change in the first cavity.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: May 12, 2015
    Assignee: General Electric Company
    Inventors: Gary Charles Liotta, Carlos Miguel Miranda
  • Publication number: 20150114001
    Abstract: A sealing component for reducing secondary airflow in a turbine system includes a first end segment configured to be disposed between, and retained in a radial direction by, a first land on a first rotor disk and a first turbine bucket platform operatively coupled to the first rotor disk. Also included is a second end segment configured to be disposed between, and retained in a radial direction by, a second land on a second rotor disk and a second turbine bucket platform operatively coupled to the second rotor disk. Further included is a main body portion extending axially from the first end segment to the second end segment.
    Type: Application
    Filed: October 28, 2013
    Publication date: April 30, 2015
    Applicant: General Electric Company
    Inventors: Brian Denver Potter, Gary Charles Liotta
  • Patent number: 8845284
    Abstract: An apparatus for restricting fluid flow in a turbo-machine is disclosed. The apparatus includes: a first inter-stage sealing member configured to be located between a first rotating airfoil stage and a second rotating airfoil stage attached to a rotor shaft, the first inter-stage sealing member including a segmented structure that includes a plurality of segments forming a circumferential surface, the first inter-stage sealing member including: a first base portion including a securing mechanism configured to at least substantially radially and tangentially secure the inter-stage sealing member to an inter-stage support structure; a first axial retention mechanism; and a first axially extending sealing portion configured to be outwardly radially loaded against at least one of the first rotating airfoil stage and the second rotating airfoil stage.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: September 30, 2014
    Assignee: General Electric Company
    Inventors: Thomas Raymond Farrell, Gary Charles Liotta, Ian David Wilson
  • Patent number: 8727730
    Abstract: A composite turbine blade assembly includes a ceramic blade including an airfoil portion, a shank portion and an attachment portion; and a transition assembly adapted to attach the ceramic blade to a turbine disk or rotor, the transition assembly including first and second transition components clamped together, trapping said ceramic airfoil therebetween. Interior surfaces of the first and second transition portions are formed to mate with the shank portion and the attachment portion of the ceramic blade, and exterior surfaces of said first and second transition components are formed to include an attachment feature enabling the transition assembly to be attached to the turbine rotor or disk.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: May 20, 2014
    Assignee: General Electric Company
    Inventors: Gary Charles Liotta, Andres Garcia-Crespo
  • Patent number: 8668445
    Abstract: A nozzle is disclosed for use in a turbine or compressor. In an embodiment, each of a plurality of vanes is supported by an outer shroud including a plurality of outer shroud segments disposed adjacent to adjoining segments in end-to-end relationship. Each segment includes a hole therethrough, dimensioned to receive a vane extension sleeve. This system may be used in conjunction with a modulated cooling system and may allow for improved removal for overhaul.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: March 11, 2014
    Assignee: General Electric Company
    Inventors: Andres Jose Garcia Crespo, Robert Walter Coign, David Richard Johns, Gary Charles Liotta
  • Publication number: 20130330168
    Abstract: A thermally actuated assembly for a gas turbine assembly for a gas turbine system includes a heat transfer component having a first portion and a second portion, wherein the first portion is disposed within a first cavity having a first temperature and the second portion is disposed in a second cavity having a second temperature, wherein the heat transfer component extends through a cavity wall, wherein the first temperature is greater than the second temperature. Also included is a temperature sensitive element disposed within the second cavity and in operable communication with the heat transfer component. Further included is a flow manipulating device disposed within the second cavity and configured to displace in response to a temperature change in the first cavity.
    Type: Application
    Filed: June 12, 2012
    Publication date: December 12, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Gary Charles Liotta, Carlos Miguel Miranda
  • Patent number: 8549864
    Abstract: A system for modulating the amount of air supplied through a pressure boundary in a gas turbine is disclosed that includes a passageway located on the pressure boundary. Additionally, a temperature activated valve is mounted within the passageway and is configured to activate at a predetermined temperature threshold. Specifically, the temperature activated valve activates from a closed position to an open position when the local temperature at the temperature activated valve reaches or exceeds the predetermined temperature threshold to allow air to flow through the passageway.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: October 8, 2013
    Assignee: General Electric Company
    Inventors: Richard Henry Langdon, II, Gary Charles Liotta
  • Patent number: 8535491
    Abstract: An electrode for an electrochemical machining process is provided. The electrode comprises a curved, electrically conductive member, and an insulating coating covering at least a portion of a side surface of the curved, electrically conductive member. An electrochemical machining assembly is also provided for machining curved holes in a workpiece. The assembly includes at least one curved electrode and a power supply operatively connected to provide a pulsed voltage to the at least one curved electrode and to the workpiece. The assembly further includes a rotational driver operatively connected to move the at least one curved electrode along a curved path within the workpiece. The assembly is configured to remove material from the workpiece upon application of the pulsed voltage to the at least one curved electrode and to the workpiece. An electrochemical machining method is also provided for forming one or more curved holes in an electrically conductive workpiece.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: September 17, 2013
    Assignee: General Electric Company
    Inventors: Bin Wei, Gary Charles Liotta
  • Publication number: 20130236289
    Abstract: A system includes a multi-stage turbine. The multi-stage turbine has an interstage seal extending axially between a first turbine stage and a second turbine stage. The interstage seal has an upper body that extends from an upstream seating arm to a downstream seating arm. The upstream and downstream seating arms are designed to constrain movement of the interstage seal along a radial direction of the multi-stage turbine. The interstage seal also has a lower body that extends from a seating end to a hook end. The seating end is designed to constrain movement of the interstage seal along the radial direction. The hook end has a protrusion that extends crosswise relative to a base of the lower body. The hook end is designed to constrain movement of the interstage seal along the radial direction and an axial direction of the multi-stage turbine.
    Type: Application
    Filed: March 12, 2012
    Publication date: September 12, 2013
    Applicant: General Electric Company
    Inventors: Gary Charles Liotta, Brian Denver Potter
  • Publication number: 20130168927
    Abstract: In one aspect, the present subject matter discloses a seal including a substrate material. The substrate material has a first portion having a first abradability and a second portion having a second abradability, the first abradability being different from the second abradability.
    Type: Application
    Filed: January 4, 2012
    Publication date: July 4, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Stanley Frank Simpson, Gary Charles Liotta, Jeffrey Todd Knapp
  • Publication number: 20130108462
    Abstract: The present application provides a cover plate assembly for use with a rotor disk. The cover plate assembly may include a radial flange extending from the rotor disk, a flange aperture extending through the radial flange, a cover plate segment with a fastening aperture and a hook for receiving the radial flange, and a fastener extending through the flange aperture and the fastening aperture.
    Type: Application
    Filed: October 26, 2011
    Publication date: May 2, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: John Wesley Harris, JR., Gary Charles Liotta
  • Patent number: 8317459
    Abstract: Embodiments of the invention can provide systems, methods, and an apparatus for providing a magnetic seal. According to one embodiment, a system having a magnetic seal can be provided. The system can include a rotary machine having a first component and a second component. A magnetic seal can be mounted to the first component and positioned relative to the second component to provide a gap between the magnetic seal and the second component. The magnetic seal can include a first magnetic element and a compliant material adapted to adjust in response to a force exerted on the magnetic seal by a second magnetic element. The second magnetic element can be mounted to the second component so that the gap between the magnetic seal and the second component can be modified in response to the force exerted by second magnetic element on the magnetic seal.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: November 27, 2012
    Assignee: General Electric Company
    Inventors: Andres Jose Garcia-Crespo, Gary Charles Liotta