Patents by Inventor Apostolos Pavlos Karafillis

Apostolos Pavlos Karafillis 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: 10724436
    Abstract: A method and apparatus for separating particles from an inlet airflow of a turbine engine has a centerbody with a radially outer scavenge conduit. The inlet airflow has entrained particulate matter, which can impact an impact surface defining part of the centerbody. The impact surface can be disposed at an angle or have a low coefficient of restitution to reduce the velocity of the incoming particulate matter. The particulate matter is radially diverted radially outward through the scavenge conduit, unable to make a turn defined by the shape of the centerbody.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: July 28, 2020
    Assignee: General Electric Company
    Inventors: Jeffrey Carl Mayer, Apostolos Pavlos Karafillis, John Alan Manteiga, Courtney Ann Kiszewski, Kyle Earl Roland Henry, Craig Douglas Young
  • Patent number: 10704414
    Abstract: A containment structure for surrounding a rotatable machine includes a double-walled inner shell having a forward end, an aft end, and a substantially cylindrical body extending therebetween. The inner shell includes an inner wall at least partially surrounding a bladed portion of the bladed rotor, and an outer portion that branches radially outward from the inner wall. The containment structure also includes a substantially cylindrical back sheet coupled to the outer portion and disposed radially outward of the inner wall.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: July 7, 2020
    Assignee: General Electric Company
    Inventors: Nitesh Jain, Nicholas Joseph Kray, Manoj Kumar Jain, Mojibur Rahman, Nagamohan Govinahalli Prabhakar, Scott Roger Finn, Thomas Chadwick Waldman, Apostolos Pavlos Karafillis
  • Publication number: 20200200045
    Abstract: A bolted joint apparatus includes: a first component including a first row of first bolt holes extending therethrough; a second component including a second row of second bolt holes extending therethrough wherein the second bolt holes are aligned coaxially with the first bolt holes, a plurality of fasteners, each of fasteners disposed through aligned pairs of the first and second bolt holes to couple together the first and second components, each of the fasteners including a shank; and crushable spacers disposed around the shanks of the fasteners, the crushable spacers clamped in compression between the fasteners and one of the components, wherein each of the crushable spacers has a tubular body interconnecting first and second enlarged ends, the tubular body being defined by a peripheral wall which incorporates at least one weakening feature.
    Type: Application
    Filed: March 5, 2020
    Publication date: June 25, 2020
    Inventors: Apostolos Pavlos Karafillis, Manoj Kumar Jain, Thomas Chadwick Waldman, Nagamohan Govinahalli Prabhakar
  • Patent number: 10677261
    Abstract: A turbine engine that includes an engine casing including a shell and an angel wing member. The angel wing member includes a base defined at the shell, a tip positioned distal from the base, and a first side and a second side that define a thickness of the angel wing member. The thickness of the angel wing member is non-uniform between the base and the tip.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: June 9, 2020
    Assignee: General Electric Company
    Inventors: Nicholas Joseph Kray, Thomas Chadwick Waldman, James Edward Thompson, Douglas Ward, Apostolos Pavlos Karafillis
  • Patent number: 10662813
    Abstract: A turbine engine that includes an engine casing including a shell and an angel wing member. The angel wing member includes a base defined at the shell and a tip positioned distal from the base. The turbine engine also includes a backsheet extending over the angel wing member such that an angled region is defined in the backsheet at an interface with the tip. The tip has a predetermined contour capable of mitigating stress concentrations in the angled region induced from said tip.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: May 26, 2020
    Assignee: General Electric Company
    Inventors: Thomas Chadwick Waldman, James Edward Thompson, Douglas Ward, Nicholas Joseph Kray, Scott Roger Finn, Apostolos Pavlos Karafillis
  • Patent number: 10563868
    Abstract: The present disclosure is directed to a method and structure of coupling a flameholder assembly to a hot section of a propulsion system, such as an afterburning exhaust section. The propulsion system includes an outer casing and an inner casing defining a flameholder assembly disposed radially within the outer casing. The method includes providing a housing defining a retaining rod and groove into which a structural member attaches; providing a retaining plate defining an opening through which the structural member is extended; coupling the structural member to the retaining rod of the housing and the outer casing of the propulsion system; and coupling the retaining plate to the housing and the inner casing of the propulsion system such that the structural member is retained between the housing and the retaining plate.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: February 18, 2020
    Assignee: General Electric Company
    Inventors: Apostolos Pavlos Karafillis, Kevin Kenneth Pruzinsky
  • Patent number: 10436061
    Abstract: A backsheet for use in a turbine engine fan case includes a first portion including a first portion first end and an opposing first portion second end. The first portion is tapered between the first portion first end and the first portion second end. The backsheet also includes a second portion coupled to the first portion. The second portion includes a second portion first end and an opposing second portion second end. The second portion defines a constant thickness between the second portion first end and the second portion second end.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: October 8, 2019
    Assignee: General Electric Company
    Inventors: Nicholas Joseph Kray, Thomas Chadwick Waldman, Manoj Kumar Jain, Mojibur Rahman, Nitesh Jain, Nagamohan Govinahalli Prabhakar, Scott Roger Finn, Apostolos Pavlos Karafillis
  • Publication number: 20180340447
    Abstract: A bolted joint apparatus includes: a first component including a first row of first bolt holes extending therethrough; a second component including a second row of second bolt holes extending therethrough wherein the second bolt holes are aligned coaxially with the first bolt holes, a plurality of fasteners, each of fasteners disposed through aligned pairs of the first and second bolt holes to couple together the first and second components, each of the fasteners including a shank; and crushable spacers disposed around the shanks of the fasteners, the crushable spacers clamped in compression between the fasteners and one of the components, wherein each of the crushable spacers has a tubular body interconnecting first and second enlarged ends, the tubular body being defined by a peripheral wall which incorporates at least one weakening feature.
    Type: Application
    Filed: May 25, 2017
    Publication date: November 29, 2018
    Inventors: Apostolos Pavlos Karafillis, Manoj Kumar Jain, Thomas Chadwick Waldman, Nagamohan Govinahalli Prabhakar
  • Publication number: 20180334922
    Abstract: A softwall containment system for a machine includes an inner wall circumscribing a bladed rotatable member of the machine and extending from a forward end to an aft end. The softwall containment system also includes an outer wall circumscribing the inner wall and extending from a forward end to an aft end. The outer wall is spaced radially outwardly from the inner wall. The outer wall extends axially between a first joint coupling the forward end of the inner wall to the forward end of the outer wall and a second joint coupling the aft end of the inner wall to the aft end of the outer wall. The softwall containment system also includes an anti-ballistic material wrap covering the outer wall, the anti-ballistic material wrap including at least one of a first extension extending forward of the first joint and a second extension extending aft of the second joint.
    Type: Application
    Filed: May 16, 2017
    Publication date: November 22, 2018
    Inventors: Nicholas Joseph Kray, Thomas Chadwick Waldman, Manoj Kumar Jain, Mojibur Rahman, Nitesh Jain, Nagamohan Govinahalli Prabhakar, Scott Roger Finn, Apostolos Pavlos Karafillis
  • Publication number: 20180320899
    Abstract: The present disclosure is directed to a method and structure of coupling a flameholder assembly to a hot section of a propulsion system, such as an afterburning exhaust section. The propulsion system includes an outer casing and an inner casing defining a flameholder assembly disposed radially within the outer casing. The method includes providing a housing defining a retaining rod and groove into which a structural member attaches; providing a retaining plate defining an opening through which the structural member is extended; coupling the structural member to the retaining rod of the housing and the outer casing of the propulsion system; and coupling the retaining plate to the housing and the inner casing of the propulsion system such that the structural member is retained between the housing and the retaining plate.
    Type: Application
    Filed: May 8, 2017
    Publication date: November 8, 2018
    Inventors: Apostolos Pavlos Karafillis, Kevin Kenneth Pruzinsky
  • Patent number: 10119424
    Abstract: An attachment assembly for attaching a center structure to an outer structure at least partially circumscribing the center structure, the attachment assembly having a bushing provided within the center structure or the outer structure, the bushing defining a first through passage, a bushing adapter slidably mounted within the first through passage and defining a second through passage, a threaded passage provided on the other of the center structure or the outer structure and a bolt passing through the first through passage and the second through passage and threaded into the threaded passage.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: November 6, 2018
    Assignee: General Electric Company
    Inventors: Apostolos Pavlos Karafillis, Christopher Dale Mathias, Kyle Earl Roland Henry, Dylan James Fitzpatrick, Dennis Robert Jonassen, Paul W. Donahue
  • Publication number: 20180298782
    Abstract: A turbine engine that includes an engine casing including a shell and an angel wing member. The angel wing member includes a base defined at the shell and a tip positioned distal from the base. The turbine engine also includes a backsheet extending over the angel wing member such that an angled region is defined in the backsheet at an interface with the tip. The tip has a predetermined contour capable of mitigating stress concentrations in the angled region induced from said tip.
    Type: Application
    Filed: April 13, 2017
    Publication date: October 18, 2018
    Inventors: Thomas Chadwick Waldman, James Edward Thompson, Douglas Ward, Nicholas Joseph Kray, Scott Roger Finn, Apostolos Pavlos Karafillis
  • Publication number: 20180298780
    Abstract: A backsheet for use in a turbine engine fan case includes a first portion including a first portion first end and an opposing first portion second end. The first portion is tapered between the first portion first end and the first portion second end. The backsheet also includes a second portion coupled to the first portion. The second portion includes a second portion first end and an opposing second portion second end. The second portion defines a constant thickness between the second portion first end and the second portion second end.
    Type: Application
    Filed: April 13, 2017
    Publication date: October 18, 2018
    Inventors: Nicholas Joseph Kray, Thomas Chadwick Waldman, Manoj Kumar Jain, Mojibur Rahman, Nitesh Jain, Nagamohan Govinahalli Prabhakar, Scott Roger Finn, Apostolos Pavlos Karafillis
  • Publication number: 20180298915
    Abstract: A turbine engine that includes an engine casing including a shell and an angel wing member. The angel wing member includes a base defined at the shell, a tip positioned distal from the base, and a first side and a second side that define a thickness of the angel wing member. The thickness of the angel wing member is non-uniform between the base and the tip.
    Type: Application
    Filed: April 13, 2017
    Publication date: October 18, 2018
    Inventors: Nicholas Joseph Kray, Thomas Chadwick Waldman, James Edward Thompson, Douglas Ward, Apostolos Pavlos Karafillis
  • Publication number: 20180258796
    Abstract: A containment structure for surrounding a rotatable machine includes a double-walled inner shell having a forward end, an aft end, and a substantially cylindrical body extending therebetween. The inner shell includes an inner wall at least partially surrounding a bladed portion of the bladed rotor, and an outer portion that branches radially outward from the inner wall. The containment structure also includes a substantially cylindrical back sheet coupled to the outer portion and disposed radially outward of the inner wall.
    Type: Application
    Filed: March 10, 2017
    Publication date: September 13, 2018
    Inventors: Nitesh Jain, Nicholas Joseph Kray, Manoj Kumar Jain, Mojibur Rahman, Nagamohan Govinahalli Prabhakar, Scott Roger Finn, Thomas Chadwick Waldman, Apostolos Pavlos Karafillis
  • Patent number: 9784133
    Abstract: A turbine frame for a turbine engine having an axial centerline, the turbine frame comprising an inner hub, an outer hub encircling the inner hub, a plurality of struts extending between the inner and outer hubs and having a maximum width portion relative to the axial centerline and an airfoil comprising at least first and second fairings mounted to the inner and outer hubs and encircling one of the struts.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: October 10, 2017
    Assignee: General Electric Company
    Inventors: Apostolos Pavlos Karafillis, Martin Wayne Frash, Schuyler Javier Ortega, Angelo Parisi
  • Patent number: 9771828
    Abstract: A turbine frame for a turbine engine having an axial centerline, includes an inner hub, an outer hub encircling the inner hub, a plurality of struts extending between the inner and outer hubs, at least one vane segment comprising at least first and second fairings mounted to the inner and outer hubs and encircling one of the struts and a single piece outer retaining ring that is operably coupled to the vane segment to fix a radial position of the vane segment relative to the inner and outer retaining rings and methods of assembling at least one vane segment having at least one vane formed from a pair of fairings to an exhaust frame.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: September 26, 2017
    Assignee: General Electric Company
    Inventors: Apostolos Pavlos Karafillis, Martin Wayne Frash, Schuyler Javier Ortega, Angelo Parisi
  • Publication number: 20170211475
    Abstract: A method and apparatus for separating particles from an inlet airflow of a turbine engine has a centerbody with a radially outer scavenge conduit. The inlet airflow has entrained particulate matter, which can impact an impact surface defining part of the centerbody. The impact surface can be disposed at an angle or have a low coefficient of restitution to reduce the velocity of the incoming particulate matter. The particulate matter is radially diverted radially outward through the scavenge conduit, unable to make a turn defined by the shape of the centerbody.
    Type: Application
    Filed: January 21, 2016
    Publication date: July 27, 2017
    Inventors: Jeffrey Carl Mayer, Apostolos Pavlos Karafillis, John Alan Manteiga, Courtney Ann Kiszewski, Kyle Earl Roland Henry, Craig Douglas Young
  • Publication number: 20160326911
    Abstract: An attachment assembly for attaching a center structure to an outer structure at least partially circumscribing the center structure, the attachment assembly having a bushing provided within the center structure or the outer structure, the bushing defining a first through passage, a bushing adapter slidably mounted within the first through passage and defining a second through passage, a threaded passage provided on the other of the center structure or the outer structure and a bolt passing through the first through passage and the second through passage and threaded into the threaded passage.
    Type: Application
    Filed: May 8, 2015
    Publication date: November 10, 2016
    Inventors: Apostolos Pavlos Karafillis, Christopher Dale Mathias, Kyle Earl Roland Henry, Dylan James Fitzpatrick, Dennis Robert Jonassen, Paul W. Donahue
  • Publication number: 20160290168
    Abstract: A turbine frame for a turbine engine having an axial centerline, includes an inner hub, an outer hub encircling the inner hub, a plurality of struts extending between the inner and outer hubs, at least one vane segment comprising at least first and second fairings mounted to the inner and outer hubs and encircling one of the struts and a single piece outer retaining ring that is operably coupled to the vane segment to fix a radial position of the vane segment relative to the inner and outer retaining rings and methods of assembling at least one vane segment having at least one vane formed from a pair of fairings to an exhaust frame.
    Type: Application
    Filed: April 1, 2015
    Publication date: October 6, 2016
    Inventors: Apostolos Pavlos Karafillis, Martin Wayne Frash, Schuyler Javier Ortega, Angelo Parisi