Patents by Inventor William Yeager

William Yeager 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: 10370569
    Abstract: A curable composition for bonding windings or core laminates in an electrical machine is presented. The curable composition includes: (A) about 10 weight percent to about 25 weight percent of a polyfunctional cyanate ester; (B) about 35 weight percent to about 65 weight percent of a first difunctional cyanate ester, or a prepolymer thereof; (C) about 15 weight percent to about 40 weight percent of a second difunctional cyanate ester, or a prepolymer thereof. An associated method is also presented.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: August 6, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Weijun Yin, Gary William Yeager, Kevin Warner Flanagan, David Andrew Simon, Eugene Pauling Boden, Kathryn Amanda Misner
  • Patent number: 10240532
    Abstract: A module for a gas turbine engine comprises a frame and a frame cooling system. The frame includes a circumferentially distributed plurality of radially extending struts. Each strut is joined to an outer frame section at an outer frame junction, and joined to an inner frame section at an inner frame junction. The frame cooling system comprises an inlet, a plurality of cooling air passages extending from the inlet radially through each of the plurality of frame struts; and an outlet. The outlet is in fluid communication with at least one of the cooling air passages and includes a film cooling hole formed through the frame proximate the outer frame junction.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: March 26, 2019
    Assignee: United Technologies Corporation
    Inventors: Jonathan Ariel Scott, William Yeager
  • Patent number: 10047630
    Abstract: A method of mixing airflow within an inner diameter (ID) mixing chamber of a turbine exhaust case (TEC) includes directing pressurized airflow into the ID mixing chamber. Cooling airflow is directed radially inward via a tube and is then expelled into the ID mixing chamber in a circumferential direction for mixing with the pressurized airflow.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: August 14, 2018
    Assignee: United Technologies Corporation
    Inventors: William Yeager, Donna Clough
  • Patent number: 9982564
    Abstract: A structural case assembly comprises a frame, fairing and heat shield. The frame is fabricated from a material having a temperature limit below an operating point of a gas turbine engine, and comprises an outer ring, an inner ring and a plurality of struts extending therebetween to define a flow path. The fairing is fabricated from a material having a temperature limit above the operating point of the gas turbine engine, and comprises a ring-strut-ring structure that lines the flow path. The heat shield is disposed between the frame and the fairing to inhibit radiant heat transfer therebetween. The heat shield may block all line-of-sight between the fairing and the frame. The frame may be produced from CA-6NM alloy. A method for designing a turbine case structure includes selecting a frame material having a temperature limit below the operating point of an engine.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: May 29, 2018
    Assignee: United Technologies Corporation
    Inventors: William Yeager, Jonathan Ariel Scott
  • Patent number: 9976442
    Abstract: A turbine exhaust case employed in an industrial gas turbine engine includes a frame, a fairing and a heat shield. The frame includes an outer ring, an inner ring, and struts connected between the outer ring and the inner ring. The fairing includes a fairing outer ring, a fairing inner ring, and fairing struts connected between the fairing outer ring and the fairing inner ring. The heat shield is located between the frame outer ring and the fairing outer ring and provides a thermal barrier between the fairing outer ring and the frame outer ring, wherein the heat shield includes an aft portion having a flange that interfaces with the frame outer ring to form an air dam that directs cooling airflow forward along the frame outer ring within an outer diameter cavity formed between the frame outer ring and the heat shield.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: May 22, 2018
    Assignee: United Technologies Corporation
    Inventors: William Yeager, Conway Chuong, Matthew Budnick
  • Publication number: 20180127626
    Abstract: A curable composition for bonding windings or core laminates in an electrical machine is presented. The curable composition includes: (A) about 10 weight percent to about 25 weight percent of a polyfunctional cyanate ester; (B) about 35 weight percent to about 65 weight percent of a first difunctional cyanate ester, or a prepolymer thereof (C) about 15 weight percent to about 40 weight percent of a second difunctional cyanate ester, or a prepolymer thereof. An associated method is also presented.
    Type: Application
    Filed: January 8, 2018
    Publication date: May 10, 2018
    Inventors: Weijun Yin, Gary William Yeager, Kevin Warner Flanagan, David Andrew Simon, Eugene Pauling Boden, Kathryn Amanda Misner
  • Patent number: 9945251
    Abstract: Cooling a turbine exhaust case (TEC) employed in an industrial gas turbine engine includes supplying cooling airflow from an outer diameter (OD) to an inner diameter (ID) cavity, supplying a secondary airflow having a pressure greater than the pressure of the cooling airflow to the ID cavity for mixing with the cooling airflow to provide a mixed airflow, and directing the mixed airflow in a serpentine cooling path that includes first directing the mixed airflow radially outward via hollow struts to an OD cavity, then radially inward via hollow fairings that surround the hollow struts.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: April 17, 2018
    Assignee: United Technologies Corporation
    Inventors: William Yeager, John S. Tu
  • Patent number: 9911521
    Abstract: A curable composition for an electrical machine is presented. The curable composition includes: (A) about 10 weight percent to about 30 weight percent of a polyfunctional cyanate ester; (B) about 25 weight percent to about 60 weight percent of a first difunctional cyanate ester, or a prepolymer thereof; (C) about 10 weight percent to about 30 weight percent of a second difunctional cyanate ester, or a prepolymer thereof, and (D) about 5 weight percent to about 25 weight percent of a thermally conductive filler comprising boron nitride. An associated method is also presented.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: March 6, 2018
    Assignee: General Electric Company
    Inventors: Eugene Pauling Boden, Kevin Warner Flanagan, David Andrew Simon, Weijun Yin, Wei Zhang, Robert Colin McTigue, Kathryn Amanda Misner, Gary William Yeager
  • Patent number: 9879163
    Abstract: A curable composition for bonding windings or core laminates in an electrical machine is presented. The curable composition includes: (A) about 10 weight percent to about 25 weight percent of a polyfunctional cyanate ester; (B) about 35 weight percent to about 65 weight percent of a first difunctional cyanate ester, or a prepolymer thereof; (C) about 15 weight percent to about 40 weight percent of a second difunctional cyanate ester, or a prepolymer thereof. An associated method is also presented.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: January 30, 2018
    Assignee: General Electric Company
    Inventors: Weijun Yin, Gary William Yeager, Kevin Warner Flanagan, David Andrew Simon, Eugene Pauling Boden, Kathryn Amanda Misner
  • Patent number: 9879556
    Abstract: An air seal for a gas turbine engine platform comprises a flow path platform, a seal retention ring, a finger seal. The seal retention ring is situated radially adjacent the flow path platform. The finger seal is retained by the seal retention ring between the flow path platform and the seal retention ring. The finger seal comprises a first ply with first keyhole slots, a second ply with second keyhole slots circumferentially offset relative to the first keyhole slots, and a foil layer. The foil layer is disposed between the first and second plies. The finger seal has a series of cooling holes in the outer circumferential segment to cool the outer diameter of the seal. In addition, leakage between the finger seal and the flow path platform cools the inner diameter of the seal.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: January 30, 2018
    Assignee: United Technologies Corporation
    Inventors: Conway Chuong, Jeffrey J. Lienau, William Yeager
  • Patent number: 9824797
    Abstract: A resistor grid system includes a resistor strip including multiple pins. The resistor grid system also includes an insulation board coupled to the resistor strip through the multiple pins and configured to provide a structural support. The insulation board is made of a composite material. The composite material includes a nitrogen-containing aromatic thermosetting polymeric resin and a filler.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: November 21, 2017
    Assignee: General Electric Company
    Inventors: Gary William Yeager, Uday Prakash Karmarkar, John Raymond Krahn, Laura Susanne Cooper
  • Publication number: 20160180990
    Abstract: A resistor grid system includes a resistor strip including multiple pins. The resistor grid system also includes an insulation board coupled to the resistor strip through the multiple pins and configured to provide a structural support. The insulation board is made of a composite material. The composite material includes a nitrogen-containing aromatic thermosetting polymeric resin and a filler.
    Type: Application
    Filed: December 19, 2014
    Publication date: June 23, 2016
    Inventors: Gary William Yeager, Uday Prakash Karmarkar, John Raymond Krahn, Laura Susanne Cooper
  • Publication number: 20150354386
    Abstract: An air seal for a gas turbine engine platform comprises a flow path platform, a seal retention ring, a finger seal. The seal retention ring is situated radially adjacent the flow path platform. The finger seal is retained by the seal retention ring between the flow path platform and the seal retention ring. The finger seal comprises a first ply with first keyhole slots, a second ply with second keyhole slots circumferentially offset relative to the first keyhole slots, and a foil layer. The foil layer is disposed between the first and second plies. The finger seal has a series of cooling holes in the outer circumferential segment to cool the outer diameter of the seal. In addition, leakage between the finger seal and the flow path platform cools the inner diameter of the seal.
    Type: Application
    Filed: April 6, 2015
    Publication date: December 10, 2015
    Inventors: Conway Chuong, Jeffrey J. Lienau, William Yeager
  • Publication number: 20150357086
    Abstract: A curable composition for an electrical machine is presented. The curable composition includes: (A) about 10 weight percent to about 30 weight percent of a polyfunctional cyanate ester; (B) about 25 weight percent to about 60 weight percent of a first difunctional cyanate ester, or a prepolymer thereof; (C) about 10 weight percent to about 30 weight percent of a second difunctional cyanate ester, or a prepolymer thereof, and (D) about 5 weight percent to about 25 weight percent of a thermally conductive filler comprising boron nitride. An associated method is also presented.
    Type: Application
    Filed: June 4, 2015
    Publication date: December 10, 2015
    Inventors: Eugene Pauling Boden, Kevin Warner Flanagan, David Andrew Simon, Weijun Yin, Wei Zhang, Robert Colin Mc Tigue, Kathryn Amanda Misner, Gary William Yeager
  • Publication number: 20150353788
    Abstract: A curable composition for bonding windings or core laminates in an electrical machine is presented. The curable composition includes: (A) about 10 weight percent to about 25 weight percent of a polyfunctional cyanate ester; (B) about 35 weight percent to about 65 weight percent of a first difunctional cyanate ester, or a prepolymer thereof; (C) about 15 weight percent to about 40 weight percent of a second difunctional cyanate ester, or a prepolymer thereof. An associated method is also presented.
    Type: Application
    Filed: June 6, 2014
    Publication date: December 10, 2015
    Inventors: Weijun Yin, Gary William Yeager, Kevin Warner Flanagan, David Andrew Simon, Eugene Pauling Boden, Kathryn Amanda Misner
  • Publication number: 20150345338
    Abstract: A structural case assembly comprises a frame, fairing and heat shield. The frame is fabricated from a material having a temperature limit below an operating point of a gas turbine engine, and comprises an outer ring, an inner ring and a plurality of struts extending therebetween to define a flow path. The fairing is fabricated from a material having a temperature limit above the operating point of the gas turbine engine, and comprises a ring-strut-ring structure that lines the flow path. The heat shield is disposed between the frame and the fairing to inhibit radiant heat transfer therebetween. The heat shield may block all line-of-sight between the fairing and the frame. The frame may be produced from CA-6NM alloy. A method for designing a turbine case structure includes selecting a frame material having a temperature limit below the operating point of an engine.
    Type: Application
    Filed: December 11, 2013
    Publication date: December 3, 2015
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: William YEAGER, Jonathan Ariel SCOTT
  • Publication number: 20150345400
    Abstract: A module for a gas turbine engine comprises a frame and a frame cooling system. The frame includes a circumferentially distributed plurality of radially extending struts. Each strut is joined to an outer frame section at an outer frame junction, and joined to an inner frame section at an inner frame junction. The frame cooling system comprises an inlet, a plurality of cooling air passages extending from the inlet radially through each of the plurality of frame struts; and an outlet. The outlet is in fluid communication with at least one of the cooling air passages and includes a film cooling hole formed through the frame proximate the outer frame junction.
    Type: Application
    Filed: December 20, 2013
    Publication date: December 3, 2015
    Applicant: United Technologies Corporation
    Inventors: Jonathan Ariel Scott, William Yeager
  • Publication number: 20150337682
    Abstract: Cooling a turbine exhaust case (TEC) employed in an industrial gas turbine engine includes supplying cooling airflow from an outer diameter (OD) to an inner diameter (ID) cavity, supplying a secondary airflow having a pressure greater than the pressure of the cooling airflow to the ID cavity for mixing with the cooling airflow to provide a mixed airflow, and directing the mixed airflow in a serpentine cooling path that includes first directing the mixed airflow radially outward via hollow struts to an OD cavity, then radially inward via hollow fairings that surround the hollow struts.
    Type: Application
    Filed: December 17, 2013
    Publication date: November 26, 2015
    Inventors: William Yeager, John S. Tu
  • Publication number: 20150292344
    Abstract: An endwall of a gas turbine engine section comprises a flow path surface and a wall. The flow path surfaces defines an inner diameter of a main flow path through the gas turbine engine section, and terminates in an aft waterfall step. The wall extends substantially radially inward from the waterfall step, and defines a blockage feature that impedes airflow from the main flow path to a secondary air cavity situated inward of the waterfall step.
    Type: Application
    Filed: April 7, 2015
    Publication date: October 15, 2015
    Inventors: Conway Chuong, Jeffrey J. Lienau, William Yeager
  • Publication number: 20150292356
    Abstract: A turbine exhaust case employed in an industrial gas turbine engine includes a frame, a fairing and a heat shield. The frame includes an outer ring, an inner ring, and struts connected between the outer ring and the inner ring. The fairing includes a fairing outer ring, a fairing inner ring, and fairing struts connected between the fairing outer ring and the fairing inner ring. The heat shield is located between the frame outer ring and the fairing outer ring and provides a thermal barrier between the fairing outer ring and the frame outer ring, wherein the heat shield includes an aft portion having a flange that interfaces with the frame outer ring to form an air dam that directs cooling airflow forward along the frame outer ring within an outer diameter cavity formed between the frame outer ring and the heat shield.
    Type: Application
    Filed: December 18, 2013
    Publication date: October 15, 2015
    Inventors: William Yeager, Conway Chuong, Matthew Budnick