Patents by Inventor Duane Howard Anstead

Duane Howard Anstead 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: 11146133
    Abstract: An electric machine may include a rotor shaft that has a hollow region configured to receive a coolant. The hollow region is defined by an inner surface which has a slope that increases from a first inner diameter at a first end to a second inner diameter at a second end. Centrifugal force generated when rotating the rotor shaft causes the coolant to flow across the inner surface of the rotor shaft from the first end to the second end at a velocity depending at least in part on the slope of the inner surface of the rotor shaft. A method of cooling an electric machine includes injecting a coolant into a first end of the hollow region of the rotor shaft, rotating the rotor shaft at an operational rate of rotation, with the rotation generating centrifugal force that causes the coolant to flow from the first end to the second end, transferring heat from the rotor shaft to the coolant.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: October 12, 2021
    Assignee: General Electric Company
    Inventors: Pablo Gabriel Piazza Galarza, Fabian Isaza, Duane Howard Anstead
  • Patent number: 11098647
    Abstract: A system for managing thermal transfer in at least one of an aircraft or a gas turbine engine includes a first engine system utilizing an oil for heat transfer. The oil of the first system has a temperature limit of at least about 500° F. The system additionally includes a fuel system having a deoxygenation unit for deoxygenating fuel in the fuel system, as well as a fuel-oil heat exchanger located downstream of the deoxygenation unit. The fuel-oil heat exchanger is in thermal communication with the oil in the first engine system and the fuel in the fuel system for transferring heat from the oil in the first engine system to the fuel in the fuel system.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: August 24, 2021
    Assignee: General Electric Company
    Inventors: Brandon Wayne Miller, Duane Howard Anstead, Mohammed El Hacin Sennoun, Ning Fang, Kyle Robert Snow
  • Patent number: 10648365
    Abstract: A gas turbine engine having a core engine. The core engine includes an inlet, a compressor section, a combustion section, a turbine section, and an exhaust. The gas turbine engine also includes a bearing sump arranged in the core engine for containing lubrication, the bearing sump and lubrication having an operational range between at least about 0° F. and about 550° F.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: May 12, 2020
    Assignee: General Electric Company
    Inventors: Kyle Robert Snow, Brandon Wayne Miller, Duane Howard Anstead, Jonothan Allen Scheetz, Mohammed El Hacin Sennoun, Ning Fang
  • Publication number: 20200076257
    Abstract: An electric machine may include a rotor shaft that has a hollow region configured to receive a coolant. The hollow region is defined by an inner surface which has a slope that increases from a first inner diameter at a first end to a second inner diameter at a second end. Centrifugal force generated when rotating the rotor shaft causes the coolant to flow across the inner surface of the rotor shaft from the first end to the second end at a velocity depending at least in part on the slope of the inner surface of the rotor shaft. A method of cooling an electric machine includes injecting a coolant into a first end of the hollow region of the rotor shaft, rotating the rotor shaft at an operational rate of rotation, with the rotation generating centrifugal force that causes the coolant to flow from the first end to the second end, transferring heat from the rotor shaft to the coolant.
    Type: Application
    Filed: August 30, 2018
    Publication date: March 5, 2020
    Inventors: Pablo Gabriel Piazza Galarza, Fabian Isaza, Duane Howard Anstead
  • Publication number: 20190153954
    Abstract: A system for managing thermal transfer in at least one of an aircraft or a gas turbine engine includes a first engine system utilizing an oil for heat transfer. The oil of the first system has a temperature limit of at least about 500° F. The system additionally includes a fuel system having a deoxygenation unit for deoxygenating fuel in the fuel system, as well as a fuel-oil heat exchanger located downstream of the deoxygenation unit. The fuel-oil heat exchanger is in thermal communication with the oil in the first engine system and the fuel in the fuel system for transferring heat from the oil in the first engine system to the fuel in the fuel system.
    Type: Application
    Filed: January 24, 2019
    Publication date: May 23, 2019
    Inventors: Brandon Wayne Miller, Duane Howard Anstead, Mohammed El Hacin Sennoun, Ning Fang, Kyle Robert Snow
  • Patent number: 10215097
    Abstract: A system for managing thermal transfer in at least one of an aircraft or a gas turbine engine includes a first engine system utilizing an oil for heat transfer. The oil of the first system has a temperature limit of at least about 500° F. The system additionally includes a fuel system having a deoxygenation unit for deoxygenating fuel in the fuel system, as well as a fuel-oil heat exchanger located downstream of the deoxygenation unit. The fuel-oil heat exchanger is in thermal communication with the oil in the first engine system and the fuel in the fuel system for transferring heat from the oil in the first engine system to the fuel in the fuel system.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: February 26, 2019
    Assignee: General Electric Company
    Inventors: Brandon Wayne Miller, Duane Howard Anstead, Mohammed El Hacin Sennoun, Ning Fang, Kyle Robert Snow
  • Patent number: 9890846
    Abstract: A gearbox vent apparatus includes: a gearbox; an accessory contained in a case mounted to the gearbox such than an interior space of the case communicates with an interior space of the gearbox, wherein the case includes a sidewall and an endwall, a hollow drive shaft mounted for rotation inside the case; an annular first seal element mounted to the drive shaft; an annular second seal element mounted to the case and contacting the first seal element so as to define a sealing interface; and a vent tube having a forward end coupled to the endwall in fluid communication with the drive shaft.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: February 13, 2018
    Assignee: General Electric Company
    Inventors: Mark Gregory Wotzak, Duane Howard Anstead, Bojan Lukovic, James John Luz, Thomas Charles McCarthy, Keith Beatty
  • Publication number: 20170159564
    Abstract: A system for managing thermal transfer in at least one of an aircraft or a gas turbine engine includes a first engine system utilizing an oil for heat transfer. The oil of the first system has a temperature limit of at least about 500° F. The system additionally includes a fuel system having a deoxygenation unit for deoxygenating fuel in the fuel system, as well as a fuel-oil heat exchanger located downstream of the deoxygenation unit. The fuel-oil heat exchanger is in thermal communication with the oil in the first engine system and the fuel in the fuel system for transferring heat from the oil in the first engine system to the fuel in the fuel system.
    Type: Application
    Filed: December 8, 2015
    Publication date: June 8, 2017
    Inventors: Brandon Wayne Miller, Duane Howard Anstead, Mohammed El Hacin Sennoun, Ning Fang, Kyle Robert Snow
  • Publication number: 20170159569
    Abstract: A system for managing thermal transfer in at least one of an aircraft or a gas turbine engine includes a first engine system utilizing an oil for heat transfer. The oil of the first system has a temperature limit of at least about 500° F. The system additionally includes a fuel system having a deoxygenation unit for deoxygenating fuel in the fuel system, as well as a fuel-oil heat exchanger located downstream of the deoxygenation unit. The fuel-oil heat exchanger is in thermal communication with the oil in the first engine system and the fuel in the fuel system for transferring heat from the oil in the first engine system to the fuel in the fuel system.
    Type: Application
    Filed: February 11, 2016
    Publication date: June 8, 2017
    Inventors: Brandon Wayne Miller, Duane Howard Anstead, Mohammed El Hacin Sennoun, Ning Fang, Kyle Robert Snow
  • Publication number: 20170159493
    Abstract: A gas turbine engine having a core engine. The core engine includes an inlet, a compressor section, a combustion section, a turbine section, and an exhaust. The gas turbine engine also includes a bearing sump arranged in the core engine for containing lubrication, the bearing sump and lubrication having an operational range between at least about 0° F. and about 550° F.
    Type: Application
    Filed: December 8, 2015
    Publication date: June 8, 2017
    Inventors: Kyle Robert Snow, Brandon Wayne Miller, Duane Howard Anstead, Jonothan Allen Scheetz, Mohammed El Hacin Sennoun, Ning Fang
  • Patent number: 9567908
    Abstract: Oil sump seal pressurization apparatus for a turbine engine are disclosed. An example oil sump seal pressurization apparatus may include an oil sump comprising at least one bearing mounted therein; an oil seal operatively disposed between a non-rotating structural member of the sump and the shaft; a generally radially inwardly oriented passage arranged to supply pressurization air to the outward side of the oil seal; a generally radially outwardly oriented pathway arranged to receive at least some of the pressurization air from the passage, the pathway being at least partially defined by a generally radially outwardly extending arm disposed on the shaft, the arm rotating with the shaft; and/or a windage shield at least partially separating the passage and the pathway, the windage shield being operatively mounted to the non-rotating structural member of the sump.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: February 14, 2017
    Assignee: General Electric Company
    Inventors: Christopher Mark Bordne, Duane Howard Anstead, James John Luz
  • Publication number: 20160160992
    Abstract: A gearbox vent apparatus includes: a gearbox; an accessory contained in a case mounted to the gearbox such than an interior space of the case communicates with an interior space of the gearbox, wherein the case includes a sidewall and an endwall, a hollow drive shaft mounted for rotation inside the case; an annular first seal element mounted to the drive shaft; an annular second seal element mounted to the case and contacting the first seal element so as to define a sealing interface; and a vent tube having a forward end coupled to the endwall in fluid communication with the drive shaft.
    Type: Application
    Filed: November 13, 2015
    Publication date: June 9, 2016
    Inventors: Mark Gregory WOTZAK, Duane Howard ANSTEAD, Bojan LUKOVIC, James John LUZ, Thomas Charles MC CARTHY, Keith BEATTY
  • Patent number: 9353647
    Abstract: Oil sump seal pressurization apparatus for turbine engines are disclosed. An example oil sump seal pressurization apparatus may include a non-rotating oil sump housing a bearing; an oil seal isolating an interior of the oil sump; a passage arranged to supply pressurization air to an outward side of the oil seal; a drain arranged to allow draining of oil and venting of at least some of the pressurization air, the drain being positioned axially between the passage and the oil seal; a wide discourager tooth disposed on the shaft and extending radially outward towards a non-rotating land, which may be disposed axially between the passage and the drain, the wide discourager tooth being spaced apart from the land in a radial direction by a gap, the wide discourager tooth including an upper surface; and/or an adjacent tooth disposed on the shaft and extending radially outward from the shaft.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: May 31, 2016
    Assignee: General Electric Company
    Inventors: Christopher Mark Bordne, Duane Howard Anstead, James John Luz
  • Patent number: 8956106
    Abstract: An apparatus is provided having a first zone with a fluid flow at a first pressure, and a second zone with a fluid flow at a second pressure. A sump cavity is provided in fluid communication with the first zone and a sump vent. An eductor system may be provided with a fluid flow path therethrough and in fluid communication with the second zone and the sump vent. The eductor system may be provided with an altitude sensing valve and may also be provided with gage pressure sensing valve. The eductor system may further be provided with a second gage pressure sensing valve and may also be provided with an orifice plate. The gage pressure sensing valves may react to the gage pressure of the second zone.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: February 17, 2015
    Assignee: General Electric Company
    Inventors: Ning Fang, Benjamin Joseph Simpson, Duane Howard Anstead, Adam Mitchell Record, Donald James Welty
  • Publication number: 20130283757
    Abstract: Oil sump seal pressurization apparatus for a turbine engine are disclosed. An example oil sump seal pressurization apparatus may include an oil sump comprising at least one bearing mounted therein; an oil seal operatively disposed between a non-rotating structural member of the sump and the shaft; a generally radially inwardly oriented passage arranged to supply pressurization air to the outward side of the oil seal; a generally radially outwardly oriented pathway arranged to receive at least some of the pressurization air from the passage, the pathway being at least partially defined by a generally radially outwardly extending arm disposed on the shaft, the arm rotating with the shaft; and/or a windage shield at least partially separating the passage and the pathway, the windage shield being operatively mounted to the non-rotating structural member of the sump.
    Type: Application
    Filed: December 13, 2012
    Publication date: October 31, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Christopher Mark Bordne, Duane Howard Anstead, James John Luz
  • Publication number: 20130156547
    Abstract: An apparatus is provided having a first zone with a fluid flow at a first pressure, and a second zone with a fluid flow at a second pressure. A sump cavity is provided in fluid communication with the first zone and a sump vent. An eductor system may be provided with a fluid flow path therethrough and in fluid communication with the second zone and the sump vent. The eductor system may be provided with an altitude sensing valve and may also be provided with gage pressure sensing valve. The eductor system may further be provided with a second gage pressure sensing valve and may also be provided with an orifice plate. The gage pressure sensing valves may react to the gage pressure of the second zone.
    Type: Application
    Filed: December 20, 2011
    Publication date: June 20, 2013
    Inventors: Ning Fang, Benjamin Joseph Simpson, Duane Howard Anstead, Adam Mitchell Record, Donald James Welty
  • Patent number: 8443843
    Abstract: The present invention provides an air-oil separator comprising a first region having a mixture of air and oil, a second region wherein separation of at least some of the oil from the air-oil mixture occurs and at least one multi-directional injector plug located on a rotating component in flow communication with the first region and the second region, the multi-directional injector plug having a discharge head that is oriented such that at least a part of the air-oil mixture discharged therefrom has a component of velocity that is tangential to the direction of rotation of the rotating component.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: May 21, 2013
    Assignee: General Electric Company
    Inventors: James Kevin Mount, Richard Walker Nicholson, Duane Howard Anstead, Robert Proctor, Pradeep Hemant Sangli, Prasad Laxman Kane, Mark Leonard Hopper
  • Publication number: 20130031882
    Abstract: The present invention provides an air-oil separator comprising a first region having a mixture of air and oil, a second region wherein separation of at least some of the oil from the air-oil mixture occurs and at least one multi-directional injector plug located on a rotating component in flow communication with the first region and the second region, the multi-directional injector plug having a discharge head that is oriented such that at least a part of the air-oil mixture discharged therefrom has a component of velocity that is tangential to the direction of rotation of the rotating component.
    Type: Application
    Filed: September 14, 2012
    Publication date: February 7, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: James Kevin Mount, Richard Walker Nicholson, Duane Howard Anstead, Robert Proctor, Pradeep Hemant Sangli, Prasad Laxman Kane, Mark Leonard Hopper
  • Patent number: 8292034
    Abstract: The present invention provides an air-oil separator comprising a first region having a mixture of air and oil, a second region wherein separation of at least some of the oil from the air-oil mixture occurs and at least one multi-directional injector plug located on a rotating component in flow communication with the first region and the second region, the multi-directional injector plug having a discharge head that is oriented such that at least a part of the air-oil mixture discharged therefrom has a component of velocity that is tangential to the direction of rotation of the rotating component.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: October 23, 2012
    Assignee: General Electric Company
    Inventors: James Kevin Mount, Richard Walker Nicholson, Duane Howard Anstead, Robert Proctor, Pradeep Hemant Sangli, Prasad Laxman Kane, Mark Leonard Hopper
  • Patent number: 8092093
    Abstract: A rotating seal for a gas turbine engine includes: (a) an annular seal body; (b) a sealing component carried by the seal body which is adapted to form one-half of a rotating seal interface; and (c) an impeller carried by the seal body which comprises a plurality of radially-inwardly-extending impeller blades.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: January 10, 2012
    Assignee: General Electric Company
    Inventors: Ning Fang, Ray Harris Kinnaird, Gary Paul Moscarino, Kenneth Lee Fisher, Jonothan Allen Scheetz, Dave William Pugh, Edward William Grace, Duane Howard Anstead, Bala Corattiyil, Prasad Laxman Kane