Patents by Inventor Mehmet Demiroglu

Mehmet Demiroglu 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: 9255486
    Abstract: A brush seal for use between a rotating component and a stationary component in a turbomachine is disclosed. The brush seal according to embodiments of this invention includes a set of bristles having a fixed end and a free end, wherein the fixed end is attached to the rotating component with a mechanical clamping element and the free end extends towards the stationary component, and wherein the set of bristles are angled axially at an axial angle with respect to the rotating component. In one embodiment, the fixed end of the set of bristles are wrapped at least partially around a core element and the clamping element partially surrounds the core element and the fixed end of the set of bristles, wherein the clamping element secures the fixed end of the set of bristles within a circumferential groove in the rotating component.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: February 9, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Guoqiang Lu, Mehmet Demiroglu, Binayak Roy, Deepak Trivedi, Xiaoqing Zheng
  • Patent number: 8901463
    Abstract: A thermal management device is presently disclosed. The thermal management device includes an insulator with a maximum use temperature of at least 200 degrees Celsius, and a heating element having at least one heater leg, where the heater leg contacts the insulator and is configured to supply thermal energy. The heating element also has lead wires configured to provide a parallel electrical connection between the heater leg and a current source.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: December 2, 2014
    Assignee: General Electric Company
    Inventors: Kristopher John Frutschy, Mehmet Demiroglu, Roger Bull, Paul Sudworth, Mathew Maury
  • Patent number: 8858166
    Abstract: Systems and devices for substantially fluidly isolating portions of a rotary machine are disclosed. In one embodiment, a seal assembly for a rotary machine includes: a complementary set of seal segments configured relative one another so as to form a substantially continuous body with butt gaps between the seal segments, the segments including: a head flange; and an axial neck connected to the head flange, wherein the axial neck extends radially inboard and includes an axial slot formed substantially there through; and at least one butt gap seal element, wherein the at least one butt gap seal element includes an axial flange and a radial flange, the axial flange disposed within the axial slots of adjacent seal segments; and the radial flange extending radially inboard from the axial slots to a proximity of the rotary machine substantially forming a barrier to axial flow through the butt gap.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: October 14, 2014
    Assignee: General Electric Company
    Inventors: Xiaoqing Zheng, Bernard Arthur Couture, Jr., Mehmet Demiroglu, Gregory Leonard Diantonio, Daniel Edward Jordy
  • Publication number: 20140225326
    Abstract: The present application provides for a brush seal system for use about a rotor of a rotary machine. The brush seal system may include a number of brush seal segments, with each of the brush seal segments having a number of bristles, and one or more of the brush seal segments including an elliptical profile so as to vary a clearance between the brush seal segments and the rotor.
    Type: Application
    Filed: April 15, 2014
    Publication date: August 14, 2014
    Applicant: General Electric Company
    Inventors: Xiaoqing Zheng, Mehmet Demiroglu, Michael Dennis Mack, Guoqiang Lu
  • Patent number: 8789833
    Abstract: According to one aspect of the invention, a turbine assembly includes a first stationary component, a second stationary component positioned radially outside the first stationary component, a first key feature on the first stationary component configured to mate to a second key feature on the second stationary component and a seal assembly positioned between the first and second key features to reduce fluid flow between the first and second key features. The seal assembly includes a V-shape member and a second member adjacent to the V-shape member, the second member and V-shape member having different rates of thermal expansion. The seal assembly also includes a latch feature coupled to the V-shape member configured to expand the seal assembly from a compressed state to an expanded sealing state when the seal assembly is subject to an elevated temperature.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: July 29, 2014
    Assignee: General Electric Company
    Inventors: Xiaoqing Zheng, Mehmet Demiroglu, Guoqiang Lu, Michael Dennis Mack, Binayak Roy
  • Publication number: 20130256990
    Abstract: According to one aspect of the invention, a turbine assembly includes a first stationary component, a second stationary component positioned radially outside the first stationary component, a first key feature on the first stationary component configured to mate to a second key feature on the second stationary component and a seal assembly positioned between the first and second key features to reduce fluid flow between the first and second key features. The seal assembly includes a V-shape member and a second member adjacent to the V-shape member, the second member and V-shape member having different rates of thermal expansion. The seal assembly also includes a latch feature coupled to the V-shape member configured to expand the seal assembly from a compressed state to an expanded sealing state when the seal assembly is subject to an elevated temperature.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 3, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Xiaoqing Zheng, Mehmet Demiroglu, Guoqiang Lu, Michael Dennis Mack, Binayak Roy
  • Publication number: 20130256992
    Abstract: The present application provides for a brush seal system for use about a rotor of a rotary machine. The brush seal system may include a number of brush seal segments, with each of the brush seal segments having a number of bristles, and one or more of the brush seal segments including an elliptical profile so as to vary a clearance between the brush seal segments and the rotor.
    Type: Application
    Filed: March 27, 2012
    Publication date: October 3, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Xiaoqing Zheng, Mehmet Demiroglu, Michael Dennis Mack, Guoqiang Lu
  • Publication number: 20130068755
    Abstract: A thermal management device is presently disclosed. The thermal management device includes an insulator with a maximum use temperature of at least 200 degrees Celsius, and a heating element having at least one heater leg, where the heater leg contacts the insulator and is configured to supply thermal energy. The heating element also has lead wires configured to provide a parallel electrical connection between the heater leg and a current source.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 21, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Kristopher John FRUTSCHY, Mehmet Demiroglu, Roger Bull, Paul Sudworth, Mathew Maury
  • Publication number: 20130071716
    Abstract: A thermal management device is presently disclosed. The device includes a plurality of insulator panels with a maximum use temperature of at least 500 degrees Celsius, and a heating element having at least two heater legs electrically connected in parallel, each heater leg contacting at least one of the insulator panels, and lead wires configured to provide a parallel electrical connection between the heater legs and a current source. Also disclosed is a thermal management device having an insulator and a heating element, where each of the electrically parallel heater legs is configured to provide substantially uniform heat flux over at least one surface of the device. Also disclosed is an energy storage device that includes a plurality of energy storage cells, and a thermal management device configured to supply thermal energy to the cells.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 21, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Kristopher John FRUTSCHY, Mehmet DEMIROGLU, Roger BULL, Paul SUDWORTH, Mathew MAURY
  • Patent number: 8398090
    Abstract: A spring loaded seal assembly is disclosed for sealing a gap between adjacent turbine components. The seal assembly may generally include a turbine seal and a spring member. The turbine seal may extend between the adjacent turbine components and may be configured to seal the gap defined between the turbine components. The spring member may be configured to engage the turbine seal so as to maintain the seal in sealing engagement with the adjacent turbine components.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: March 19, 2013
    Assignee: General Electric Company
    Inventors: Kevin Weston McMahan, Mehmet Demiroglu, Timur Rustamovich Repikov
  • Publication number: 20130058765
    Abstract: Systems and devices for substantially fluidly isolating portions of a rotary machine are disclosed. In one embodiment, a seal assembly for a rotary machine includes: a complementary set of seal segments configured relative one another so as to form a substantially continuous body with butt gaps between the seal segments, the segments including: a head flange; and an axial neck connected to the head flange, wherein the axial neck extends radially inboard and includes an axial slot formed substantially there through; and at least one butt gap seal element, wherein the at least one butt gap seal element includes an axial flange and a radial flange, the axial flange disposed within the axial slots of adjacent seal segments; and the radial flange extending radially inboard from the axial slots to a proximity of the rotary machine substantially forming a barrier to axial flow through the butt gap.
    Type: Application
    Filed: September 7, 2011
    Publication date: March 7, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Xiaoqing Zheng, Bernard Arthur Couture, JR., Mehmet Demiroglu, Gregory Leonard Diantonio, Daniel Edward Jordy
  • Publication number: 20120288361
    Abstract: A brush seal for use between a rotating component and a stationary component in a turbomachine is disclosed. The brush seal according to embodiments of this invention includes a set of bristles having a fixed end and a free end, wherein the fixed end is attached to the rotating component with a mechanical clamping element and the free end extends towards the stationary component, and wherein the set of bristles are angled axially at an axial angle with respect to the rotating component. In one embodiment, the fixed end of the set of bristles are wrapped at least partially around a core element and the clamping element partially surrounds the core element and the fixed end of the set of bristles, wherein the clamping element secures the fixed end of the set of bristles within a circumferential groove in the rotating component.
    Type: Application
    Filed: July 20, 2012
    Publication date: November 15, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Guoqiang Lu, Mehmet Demiroglu, Binayak Roy, Deepak Trivedi, Xiaoqing Zheng
  • Patent number: 8225614
    Abstract: According to one aspect of the invention, a shim for sealing two adjacent turbine transition pieces is disclosed. The shim includes a circumferential member that includes a first lateral flange and a second lateral flange. Further, the first and second lateral flanges each comprise a tab configured to mate to a first surface plane and the first and second lateral flanges are configured to mate to a second surface plane, wherein the first and second surface planes are substantially parallel. In addition, the shim includes a first flange extending substantially perpendicular from the circumferential member.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: July 24, 2012
    Assignee: General Electric Company
    Inventors: Benjamin Paul Lacy, Mehmet Demiroglu, Neelesh Nandkumar Sarawate
  • Publication number: 20120183393
    Abstract: According to one aspect of the invention, an assembly to be placed between adjacent turbomachinery components is provided, where the assembly includes a first shim comprising a U-shaped cross-section geometry, wherein the first shim is configured to form a seal between adjacent components. The assembly also includes an insert placed within a recess of the U-shaped cross-section geometry of the first shim and a plurality of staggered couplings between the insert and the first shim.
    Type: Application
    Filed: January 14, 2011
    Publication date: July 19, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Mehmet Demiroglu, Benjamin Paul Lacy, Neelesh Nandkumar Sarawate
  • Patent number: 8196280
    Abstract: A fixture assembly and inspection method by which the internal diameter and/or concentricity of a segmented annular seal can be readily inspected and optionally measured prior to final installation. The fixture assembly has at least two fixture segments supported on a base, by which an annular fixture housing is defined having an outer rim and a groove with a cross-sectional shape corresponding to a cross-sectional shape of the annular seal. The fixture assembly further includes a device or apparatus for assessing at least one dimensional characteristic of the annular seal when installed in the groove of the fixture housing and as the assessing device/apparatus travels along the interior circumference of the fixture housing.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: June 12, 2012
    Assignee: General Electric Company
    Inventors: Anthony Constantine Thermos, Ronald Ralph Cairo, Mehmet Demiroglu, Nitin Bhate
  • Publication number: 20120119447
    Abstract: The present application provides a seating assembly for use with a transition piece and a stage one nozzle of a gas turbine engine. The seating assembly may include a support member positioned between the transition piece and the stage one nozzle and a primary spring element positioned on the support member and in contact with the stage one nozzle. The primary spring element may include a single bend therein.
    Type: Application
    Filed: November 11, 2010
    Publication date: May 17, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Mehmet Demiroglu, Kevin McMahan, Benjamin Lacy, Neelesh Nandkumar Sarawate, Edip Sevincer
  • Publication number: 20120119449
    Abstract: The present application provides a sealing assembly for use with a transition piece and a stage one nozzle of a gas turbine engine. The sealing assembly may include a seal element, an overlay piece positioned on the seal element, and a side seal positioned on the overlay piece.
    Type: Application
    Filed: November 11, 2010
    Publication date: May 17, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Mehmet Demiroglu, Neelesh Nandkumar Sarawate, Edip Sevincer, Benjamin Lacy
  • Publication number: 20120085103
    Abstract: According to one aspect of the invention, a shim for sealing two adjacent turbine transition pieces is disclosed. The shim includes a circumferential member that includes a first lateral flange and a second lateral flange. Further, the first and second lateral flanges each comprise a tab configured to mate to a first surface plane and the first and second lateral flanges are configured to mate to a second surface plane, wherein the first and second surface planes are substantially parallel. In addition, the shim includes a first flange extending substantially perpendicular from the circumferential member.
    Type: Application
    Filed: October 7, 2010
    Publication date: April 12, 2012
    Applicant: General Electric Company
    Inventors: Benjamin Paul Lacy, Mehmet Demiroglu, Neelesh Nandkumar Sarawate
  • Publication number: 20110304104
    Abstract: A spring loaded seal assembly is disclosed for sealing a gap between adjacent turbine components. The seal assembly may generally include a turbine seal and a spring member. The turbine seal may extend between the adjacent turbine components and may be configured to seal the gap defined between the turbine components. The spring member may be configured to engage the turbine seal so as to maintain the seal in sealing engagement with the adjacent turbine components.
    Type: Application
    Filed: June 9, 2010
    Publication date: December 15, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Kevin Weston McMahan, Timur Rustamovich Repikov, Mehmet Demiroglu
  • Publication number: 20100236066
    Abstract: A fixture assembly and inspection method by which the internal diameter and/or concentricity of a segmented annular seal can be readily inspected and optionally measured prior to final installation. The fixture assembly has at least two fixture segments supported on a base, by which an annular fixture housing is defined having an outer rim and a groove with a cross-sectional shape corresponding to a cross-sectional shape of the annular seal. The fixture assembly further includes a device or apparatus for assessing at least one dimensional characteristic of the annular seal when installed in the groove of the fixture housing and as the assessing device/apparatus travels along the interior circumference of the fixture housing.
    Type: Application
    Filed: June 2, 2010
    Publication date: September 23, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Anthony Constantine Thermos, Ronald Ralph Cairo, Mehmet Demiroglu, Nitin Bhate