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).
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Patent number: 11441427Abstract: 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: GrantFiled: April 30, 2021Date of Patent: September 13, 2022Assignee: General Electric CompanyInventors: Paul G. Deivernois, Andrew Clifford Hart, Michael James Dutka, Jeremy Peter Latimer
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Patent number: 11339666Abstract: 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: GrantFiled: April 17, 2020Date of Patent: May 24, 2022Assignee: General Electric CompanyInventors: Andrew Clifford Hart, John McConnell Delvaux, Joseph Anthony Weber, James Zhang, Peter de Diego
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Patent number: 11339665Abstract: 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: GrantFiled: March 12, 2020Date of Patent: May 24, 2022Assignee: General Electric CompanyInventors: Andrew Clifford Hart, Jing Li, Suryarghya Chakrabarti, James Tyson Balkcum, III, Markus Feigl
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Patent number: 11293454Abstract: 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: GrantFiled: April 30, 2021Date of Patent: April 5, 2022Assignee: General Electric CompanyInventors: 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
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Publication number: 20210324743Abstract: 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: ApplicationFiled: April 17, 2020Publication date: October 21, 2021Inventors: Andrew Clifford Hart, John McConnell Delvaux, Joseph Anthony Weber, James Zhang, Peter de Diego
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Publication number: 20210285330Abstract: 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: ApplicationFiled: March 12, 2020Publication date: September 16, 2021Inventors: Andrew Clifford Hart, Jing Li, Suryarghya Chakrabarti, James Tyson Balkcum, III, Markus Feigl
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Publication number: 20200102969Abstract: 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: ApplicationFiled: September 27, 2018Publication date: April 2, 2020Applicant: General Electric CompanyInventors: Paul Griffin DeIvernois, Andrew Clifford Hart
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Patent number: 9127563Abstract: 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: GrantFiled: April 5, 2011Date of Patent: September 8, 2015Assignee: General Electric CompanyInventors: John Herbert Dimmick, III, Andrew Clifford Hart
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Patent number: 9121413Abstract: 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: GrantFiled: March 22, 2012Date of Patent: September 1, 2015Assignee: General Electric CompanyInventors: Eric David Roush, Suresh Shankaranarayana Rao, Andrew Clifford Hart
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Patent number: 8998568Abstract: 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: GrantFiled: October 21, 2010Date of Patent: April 7, 2015Assignee: General Electric CompanyInventors: 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
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Patent number: 8932023Abstract: 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: GrantFiled: January 13, 2012Date of Patent: January 13, 2015Assignee: General Electric CompanyInventor: Andrew Clifford Hart
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Patent number: 8926290Abstract: 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: GrantFiled: January 4, 2012Date of Patent: January 6, 2015Assignee: General Electric CompanyInventors: Andrew Clifford Hart, Tushar Sharadchandra Desai, John Herbert Dimmick, III, Matthew Paul Forcier, Chunlian Han, Charles Alexander Smith
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Publication number: 20130251528Abstract: 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: ApplicationFiled: March 22, 2012Publication date: September 26, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Eric David ROUSH, Suresh SHANKARANARAYANA RAO, Andrew Clifford HART
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Publication number: 20130183156Abstract: 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: ApplicationFiled: January 13, 2012Publication date: July 18, 2013Applicant: GENERAL ELECTRIC COMPANYInventor: Andrew Clifford Hart
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Publication number: 20130170998Abstract: 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: ApplicationFiled: January 4, 2012Publication date: July 4, 2013Applicant: GENERAL ELECTRIC COMPANYInventors: Andrew Clifford Hart, Tushar Sharadchandra Desai, John Herbert Dimmick, III, Matthew Paul Forcier, Chunlian Han, Charles Alexander Smith
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Publication number: 20120257976Abstract: 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: ApplicationFiled: April 5, 2011Publication date: October 11, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: John Herbert Dimmick, III, Andrew Clifford Hart
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Patent number: 8220319Abstract: 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: GrantFiled: October 21, 2010Date of Patent: July 17, 2012Assignee: General Electric CompanyInventors: 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
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Publication number: 20120096934Abstract: 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: ApplicationFiled: October 21, 2010Publication date: April 26, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: 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
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Publication number: 20120096946Abstract: 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: ApplicationFiled: October 21, 2010Publication date: April 26, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: 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
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Publication number: 20120096961Abstract: 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: ApplicationFiled: October 21, 2010Publication date: April 26, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: 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