Patents by Inventor Andrew Clifford Hart

Andrew Clifford Hart 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: 11441427
    Abstract: A rotor blade includes an airfoil having an airfoil shape. The airfoil shape has a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table I. The Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances expressed in a unit of distance by multiplying the Cartesian coordinate values of X, Y and Z by a scaling factor of the airfoil in the unit of distance. The X and Y values, when connected by smooth continuing arcs, define airfoil profile sections at each Z value. The airfoil profile sections at Z values are joined smoothly with one another to form a complete airfoil shape.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: September 13, 2022
    Assignee: General Electric Company
    Inventors: Paul G. Deivernois, Andrew Clifford Hart, Michael James Dutka, Jeremy Peter Latimer
  • Patent number: 11339666
    Abstract: An article, such as a turbine blade, includes an airfoil. The airfoil includes a body, the body having an elongated internal cavity extending from a tip of the body. The cavity is defined an internal wall within the body. At least one elongated damping element is disposed in the elongated internal cavity and frictionally engages the internal wall. Thus, the least one elongated damping element is capable of damping vibrations in the article.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: May 24, 2022
    Assignee: General Electric Company
    Inventors: Andrew Clifford Hart, John McConnell Delvaux, Joseph Anthony Weber, James Zhang, Peter de Diego
  • Patent number: 11339665
    Abstract: The present embodiments set forth a blade including an airfoil, the airfoil including a tip cap, a pressure sidewall and a suction sidewall extending axially between corresponding leading and trailing edges and radially between the base and the tip cap. The blade, including the airfoil and base, being formed in at least two airfoil parts, each of the two airfoil parts including contacting edges engaging each other respective contacting edges, the contacting edges defining a joint for preloading each of the at least two parts with each other and with the base. The at least two airfoil parts forming the airfoil being retained to each other by an interference fit at the joint. The interference fit providing frictional damping of vibrations in the blade during blade operation.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: May 24, 2022
    Assignee: General Electric Company
    Inventors: Andrew Clifford Hart, Jing Li, Suryarghya Chakrabarti, James Tyson Balkcum, III, Markus Feigl
  • Patent number: 11293454
    Abstract: A stator vane includes an airfoil having an airfoil shape. The airfoil shape having a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in one of Table I, Table II, Table III, Table IV, Table V, Table VI, Table VII, or Table VIII. The Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances expressed in a unit of distance by multiplying the Cartesian coordinate values of X, Y and Z by a scaling factor of the airfoil in the unit of distance. The X and Y values, when connected by smooth continuing arcs, define airfoil profile sections at each Z value. The airfoil profile sections at Z values being joined smoothly with one another to form a complete airfoil shape.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: April 5, 2022
    Assignee: General Electric Company
    Inventors: Paul G. Deivernois, Marcus Edward Blohm, Michael James Dutka, Andrew Clifford Hart, Steven Lynn Huskins, Aaron David Williamson, Corey Lynn Hubbert, Venkata Siva Prasad Chaluvadi, Brandon Lamar Bush, Jeremy Peter Latimer
  • Publication number: 20210324743
    Abstract: An article, such as a turbine blade, includes an airfoil. The airfoil includes a body, the body having an elongated internal cavity extending from a tip of the body. The cavity is defined an internal wall within the body. At least one elongated damping element is disposed in the elongated internal cavity and frictionally engages the internal wall. Thus, the least one elongated damping element is capable of damping vibrations in the article.
    Type: Application
    Filed: April 17, 2020
    Publication date: October 21, 2021
    Inventors: Andrew Clifford Hart, John McConnell Delvaux, Joseph Anthony Weber, James Zhang, Peter de Diego
  • Publication number: 20210285330
    Abstract: The present embodiments set forth a blade including an airfoil, the airfoil including a tip cap, a pressure sidewall and a suction sidewall extending axially between corresponding leading and trailing edges and radially between the base and the tip cap. The blade, including the airfoil and base, being formed in at least two airfoil parts, each of the two airfoil parts including contacting edges engaging each other respective contacting edges, the contacting edges defining a joint for preloading each of the at least two parts with each other and with the base. The at least two airfoil parts forming the airfoil being retained to each other by an interference fit at the joint. The interference fit providing frictional damping of vibrations in the blade during blade operation.
    Type: Application
    Filed: March 12, 2020
    Publication date: September 16, 2021
    Inventors: Andrew Clifford Hart, Jing Li, Suryarghya Chakrabarti, James Tyson Balkcum, III, Markus Feigl
  • Publication number: 20200102969
    Abstract: A system is provided, including an airfoil. The airfoil includes a first suction portion of a nominal airfoil profile substantially in accordance with Cartesian coordinate values of X, Y, and Z of a suction side as set forth in TABLE I to a maximum of three decimal places, wherein the X and Y values of the suction side are coordinate values that couple together to define suction side sections of the first suction portion of the nominal airfoil profile at each Z coordinate value, the suction side sections of the first suction portion of the nominal airfoil profile are coupled together to define the first suction portion, the airfoil includes an airfoil length along a Z axis, the first suction portion comprises a first portion length along the Z axis, the first portion length is less than or equal to the airfoil length, and the Cartesian coordinate values of X, Y, and Z are non-dimensional values convertible to dimensional distances.
    Type: Application
    Filed: September 27, 2018
    Publication date: April 2, 2020
    Applicant: General Electric Company
    Inventors: Paul Griffin DeIvernois, Andrew Clifford Hart
  • Patent number: 9127563
    Abstract: A locking device arrangement for a rotating bladed stage is provided and includes a wheel formed to define a substantially circumferential slot and three slot sections, one of the slot sections including one radial slot and two lock slots to permit blade and blade lock installation along the circumferential slot, respectively, the other slot sections including a lock slot to permit blade lock installation along the circumferential slot, and the three slot sections being separated from one another with angular offsets such that the wheel is mass balanced substantially evenly about a desired center of rotation with the blade locks installed and to reduce accumulation of flowpath gaps.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: September 8, 2015
    Assignee: General Electric Company
    Inventors: John Herbert Dimmick, III, Andrew Clifford Hart
  • Patent number: 9121413
    Abstract: A compressor rotor includes a rotor body mounting a disk supporting an array of blades on a radially outer surface of the disk in a primary flow path. A radially inner portion of the disk is formed with an annular array of radially extending vanes adapted to move cooling air flowing in a secondary flow path from a radially-inward direction to an axial direction at a substantially center portion of said disk. Some of said radially-extending vanes have relatively longer radial lengths and some of the radially extending vanes having relatively shorter radial lengths to thereby provide a sufficient flow area while also lessening the formation of vortices along the vanes.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: September 1, 2015
    Assignee: General Electric Company
    Inventors: Eric David Roush, Suresh Shankaranarayana Rao, Andrew Clifford Hart
  • Patent number: 8998568
    Abstract: A turbine is provided and includes a rotor, which is rotatable about a centerline thereof, a sensor to measure a condition at a point of measurement interest defined on the rotor at a radial distance from the centerline, a communication system by which condition measurements are transmittable from the sensor to a non-rotating recording system and a probe holder to secure the sensor and a portion of the communication system on the rotor proximate to the point of measurement interest.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: April 7, 2015
    Assignee: General Electric Company
    Inventors: Kurt Kramer Schleif, Gregory Quentin Brown, Philip Michael Caruso, Fernando Jorge Casanova, Seung-Woo Choi, Josef Scott Cummins, Matthew Ryan Ferslew, Andrew Clifford Hart, Robert David Jones, Jong Youn Pak, Francesco Soranna
  • Patent number: 8932023
    Abstract: A rotor wheel for a turbomachine includes a rotor wheel body having a first face and an opposing second face joined by an outer diameter surface having a centerline. A blade receiving slot is formed in the outer diameter surface and extends about the rotor wheel body. A blade loading slot is formed in the outer diameter surface. The blade loading slot is connected with and axially off-set from the blade receiving slot.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: January 13, 2015
    Assignee: General Electric Company
    Inventor: Andrew Clifford Hart
  • Patent number: 8926290
    Abstract: An attenuation bracket is provided and includes an annular body having an annular attenuation arm defining first through-holes and an annular base defining second through-holes. A cross-section of the attenuation arm includes a flange, a connector opposite the flange and a curvilinear section extending between the flange and the connector. A cross-section of the base includes a first side corresponding with the flange and a second side opposite the first side and corresponding with the connector. The second side is connectable with the connector such that each of the first through-holes is defined in positional alignment with a corresponding one of the second through-holes.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: January 6, 2015
    Assignee: General Electric Company
    Inventors: Andrew Clifford Hart, Tushar Sharadchandra Desai, John Herbert Dimmick, III, Matthew Paul Forcier, Chunlian Han, Charles Alexander Smith
  • Publication number: 20130251528
    Abstract: A compressor rotor includes a rotor body mounting a disk supporting an array of blades on a radially outer surface of the disk in a primary flow path. A radially inner portion of the disk is formed with an annular array of radially extending vanes adapted to move cooling air flowing in a secondary flow path from a radially-inward direction to an axial direction at a substantially center portion of said disk. Some of said radially-extending vanes have relatively longer radial lengths and some of the radially extending vanes having relatively shorter radial lengths to thereby provide a sufficient flow area while also lessening the formation of vortices along the vanes.
    Type: Application
    Filed: March 22, 2012
    Publication date: September 26, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Eric David ROUSH, Suresh SHANKARANARAYANA RAO, Andrew Clifford HART
  • Publication number: 20130183156
    Abstract: A rotor wheel for a turbomachine includes a rotor wheel body having a first face and an opposing second face joined by an outer diameter surface having a centerline. A blade receiving slot is formed in the outer diameter surface and extends about the rotor wheel body. A blade loading slot is formed in the outer diameter surface. The blade loading slot is connected with and axially off-set from the blade receiving slot.
    Type: Application
    Filed: January 13, 2012
    Publication date: July 18, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: Andrew Clifford Hart
  • Publication number: 20130170998
    Abstract: An attenuation bracket is provided and includes an annular body having an annular attenuation arm defining first through-holes and an annular base defining second through-holes. A cross-section of the attenuation arm includes a flange, a connector opposite the flange and a curvilinear section extending between the flange and the connector. A cross-section of the base includes a first side corresponding with the flange and a second side opposite the first side and corresponding with the connector. The second side is connectable with the connector such that each of the first through-holes is defined in positional alignment with a corresponding one of the second through-holes.
    Type: Application
    Filed: January 4, 2012
    Publication date: July 4, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Andrew Clifford Hart, Tushar Sharadchandra Desai, John Herbert Dimmick, III, Matthew Paul Forcier, Chunlian Han, Charles Alexander Smith
  • Publication number: 20120257976
    Abstract: A locking device arrangement for a rotating bladed stage is provided and includes a wheel formed to define a substantially circumferential slot and three slot sections, one of the slot sections including one radial slot and two lock slots to permit blade and blade lock installation along the circumferential slot, respectively, the other slot sections including a lock slot to permit blade lock installation along the circumferential slot, and the three slot sections being separated from one another with angular offsets such that the wheel is mass balanced substantially evenly about a desired center of rotation with the blade locks installed and to reduce accumulation of flowpath gaps.
    Type: Application
    Filed: April 5, 2011
    Publication date: October 11, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: John Herbert Dimmick, III, Andrew Clifford Hart
  • Patent number: 8220319
    Abstract: A communication system is provided and includes a sensor to measure a condition at a point of measurement interest defined on a rotor of a turbine at a radial distance from a centerline about which the rotor is rotatable, wiring disposed on the rotor at a radial distance from the centerline, the wiring including a first wiring section coupled to the sensor, a second wiring section and a first connection by which the first and second wiring sections are connectable, a second connection by which the second wiring section transmits a signal reflective of the detected condition to a non-rotating recording element and a temperature compensation module disposed on the second wiring section to adjust the signal.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: July 17, 2012
    Assignee: General Electric Company
    Inventors: Kurt Kramer Schleif, Gregory Quentin Brown, Philip Michael Caruso, Fernando Jorge Casanova, Seung-Woo Choi, Josef Scott Cummins, Matthew Ryan Ferslew, Andrew Clifford Hart, Robert David Jones, Jong Youn Pak, Francesco Soranna
  • Publication number: 20120096934
    Abstract: A communication system is provided and includes a sensor to measure a condition at a point of measurement interest defined on a rotor of a turbine at a radial distance from a centerline about which the rotor is rotatable, wiring disposed on the rotor at a radial distance from the centerline, the wiring including a first wiring section coupled to the sensor, a second wiring section and a first connection by which the first and second wiring sections are connectable, a second connection by which the second wiring section transmits a signal reflective of the detected condition to a non-rotating recording element and a temperature compensation module disposed on the second wiring section to adjust the signal.
    Type: Application
    Filed: October 21, 2010
    Publication date: April 26, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Kurt Kramer Schleif, Gregory Quentin Brown, Philip Michael Caruso, Fernando Jorge Casanova, Seung-Woo Choi, Josef Scott Cummins, Matthew Ryan Ferslew, Andrew Clifford Hart, Robert David Jones, Jong Youn Pak, Francesco Soranna
  • Publication number: 20120096946
    Abstract: A turbine is provided and includes a rotor, which is rotatable about a centerline thereof, a sensor to measure a condition at a point of measurement interest defined on the rotor at a radial distance from the centerline, a communication system by which condition measurements are transmittable from the sensor to a non-rotating recording system and a probe holder to secure the sensor and a portion of the communication system on the rotor proximate to the point of measurement interest.
    Type: Application
    Filed: October 21, 2010
    Publication date: April 26, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Kurt Kramer Schleif, Gregory Quentin Brown, Philip Michael Caruso, Fernando Jorge Casanova, Seung-Woo Choi, Josef Scott Cummins, Matthew Ryan Ferslew, Andrew Clifford Hart, Robert David Jones, Jong Youn Pak, Francesco Soranna
  • Publication number: 20120096961
    Abstract: A turbine is provided and includes a component having a body, which is rotatable about a rotor centerline and which is formed to define a cavity radially proximate to a point of measurement interest defined at a radial distance from the centerline, a sensor to measure a condition at the point of measurement interest, a communication system by which condition measurements are transmittable from the sensor to a non-rotating recording system and a probe holder insertible into the cavity to secure the sensor proximate to the point of measurement interest.
    Type: Application
    Filed: October 21, 2010
    Publication date: April 26, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Kurt Kramer Schleif, Gregory Quentin Brown, Philip Michael Caruso, Fernando Jorge Casanova, Seung-Woo Choi, Josef Scott Cummins, Matthew Ryan Ferslew, Andrew Clifford Hart, Robert David Jones, Jong Youn Pak