Patents by Inventor Donald Albert BRADLEY

Donald Albert BRADLEY 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).

  • Publication number: 20210054923
    Abstract: An apparatus and a method of retaining a bearing assembly having a bore to a shaft received within the bore, the method comprising physically limiting the axial movement of the bearing assembly on the shaft by a retainer mounted to an end of the shaft and having a portion extending radially beyond the shaft and into an axial path of the bearing assembly.
    Type: Application
    Filed: October 26, 2020
    Publication date: February 25, 2021
    Inventors: William Howard Hasting, Donald Albert Bradley, Randy Thomas Antelo
  • Patent number: 10823005
    Abstract: A lubrication system for a gas turbine engine includes a tank, a circulation pump, and a heat exchanger. The circulation pump generates a flow of lubricant from the tank to, e.g., a power gear box of the gas turbine engine and the heat exchanger removes an amount of heat from such flow of lubricant provided to the power gear box. The lubrication system also includes one or more valves in the flow of lubricant for controlling a flowrate and/or temperature of the lubricant provided to, e.g., the power gear box to increase an efficiency and/or durability of the power gear box.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: November 3, 2020
    Assignee: General Electric Company
    Inventors: Ning Charles Fang, Donald Albert Bradley, Gert J. van der Merwe
  • Patent number: 10816086
    Abstract: An apparatus and a method of retaining a bearing assembly having a bore to a shaft received within the bore, the method comprising physically limiting the axial movement of the bearing assembly on the shaft by a retainer mounted to an end of the shaft and having a portion extending radially beyond the shaft and into an axial path of the bearing assembly.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: October 27, 2020
    Assignee: General Electric Company
    Inventors: William Howard Hasting, Donald Albert Bradley, Randy Thomas Antelo
  • Patent number: 10816078
    Abstract: A planet gear train for an engine casing includes a sun gear rotatable by a shaft, a ring gear, a plurality of planet gears rotatably mounted in a planet carrier and meshing with the sun gear and the ring gear, and a damping system. The damping system includes a soft mount disposed about the shaft and coupling the planet carrier the engine casing. The soft mount includes a flexible inner sleeve and a flexible outer sleeve. The flexible inner sleeve and the flexible outer sleeve are fixedly coupled together at respective central portions thereof near the shaft. The damping system further includes a plurality of damping couplers disposed about an outer flange of the planet carrier. The plurality of damping couplers is configured to flexibly couple the flexible inner sleeve to the flexible outer sleeve.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: October 27, 2020
    Assignee: General Electric Company
    Inventors: Brandon Wayne Miller, Randy M. Vondrell, Donald Albert Bradley, Bugra Han Ertas
  • Patent number: 10787928
    Abstract: A casing for use in a turbofan engine is provided. The casing includes an inner hub, an intermediate casing positioned radially outward from the inner hub, an outer casing positioned radially outward from the intermediate casing, and a plurality of struts spaced circumferentially about the inner hub and extending between the inner hub and the outer casing. At least one strut of the plurality of struts includes a flow channel extending therethrough. The casing also includes a fluid scoop defined within the inner hub, and a collector that couples the fluid scoop in flow communication with the flow channel.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: September 29, 2020
    Assignees: General Electric Company, GE Avio, S.r.l.
    Inventors: Andrew Michael Tompkins, Brandon Wayne Miller, Donald Albert Bradley, Michele Gravina, Daniel Alan Niergarth, Lorenzo Cipolla
  • Publication number: 20200088106
    Abstract: A gas turbine engine including a fan, a core including at least one rotatable shaft, and a gearbox mechanically coupling at least one rotatable shaft of the core to the fan is provided. The gas turbine engine also includes a coupling system for mounting the gearbox within the gas turbine engine. The coupling system includes a flexible coupling connected to at least one of a fan frame or a core frame, as well as a torque frame connected to the flexible coupling and the gearbox. Moreover, a deflection limiter is provided, loosely attaching the flexible coupling to the gearbox to provide a predetermined axial range of motion, radial range of motion, and circumferential range of motion between the gearbox and the frame to which the flexible coupling is attached.
    Type: Application
    Filed: November 8, 2019
    Publication date: March 19, 2020
    Inventors: Brandon Wayne Miller, Donald Albert Bradley
  • Patent number: 10508731
    Abstract: A planet gear includes a pin and an annular planet gear rim. The pin has a pin radius. The pin includes a pin outer surface. The annular planet gear rim has an inner radius and an outer radius. The annular planet gear rim includes an inner surface and an outer surface. The inner surface and the pin outer surface define a clearance therebetween. The clearance is greater than 0 when a radial force is applied to the planet gear.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: December 17, 2019
    Assignee: General Electric Company
    Inventors: Darren Lee Hallman, Donald Albert Bradley, Changjie Sun, Bugra Han Ertas
  • Patent number: 10495004
    Abstract: A gas turbine engine including a fan, a core including at least one rotatable shaft, and a gearbox mechanically coupling at least one rotatable shaft of the core to the fan is provided. The gas turbine engine also includes a coupling system for mounting the gearbox within the gas turbine engine. The coupling system includes a flexible coupling connected to at least one of a fan frame or a core frame, as well as a torque frame connected to the flexible coupling and the gearbox. Moreover, a deflection limiter is provided, loosely attaching the flexible coupling to the gearbox to provide a predetermined axial range of motion, radial range of motion, and circumferential range of motion between the gearbox and the frame to which the flexible coupling is attached.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: December 3, 2019
    Assignee: General Electric Company
    Inventors: Brandon Wayne Miller, Donald Albert Bradley
  • Patent number: 10415429
    Abstract: A planet gearbox is provided for connection to a carrier of an epicyclic gearing arrangement with a single input and single output and including a sun gear, a ring gear and at least one double helix planet gear rotatable on a cylindrical roller bearing with a cage having a cross-web thickness of 15% to 25% of the diameter of the cylindrical rollers and an L/D ratio exceeding 1.0. A gas turbine engine includes a fan and LP shaft, which couples a compressor to a turbine. An epicyclic gearing arrangement has a single input from the LP shaft coupled to a sun gear, a single output coupled to the fan's shaft, and a planet bearing cage having a cross-web thickness measuring 15% to 25% of the roller's diameter.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: September 17, 2019
    Assignee: General Electric Company
    Inventors: William Howard Hasting, Donald Albert Bradley, Joseph Robert Dickman
  • Publication number: 20190186598
    Abstract: A planet gear includes an annular planet gear rim having a constant inner radius along a complete axial length and an outer radius defined as the radial distance to the root of the gear teeth. The annular planet gear rim further has an average rim radius defined at a halfway point between the constant inner radius and the outer radius. The average rim radius and the rim thickness define a ratio including values in a range from and including about 4 to and including about 9. A gear assembly and turbomachine including the planet gear are disclosed.
    Type: Application
    Filed: February 25, 2019
    Publication date: June 20, 2019
    Inventors: Kennneth Lee Fisher, Darren Lee Hallman, Bugra Han Ertas, Donald Albert Bradley, Haris Ligata, William Howard Hasting, Ning Fang, Gert Johannes van der Merwe, Mark Alan Rhoads
  • Patent number: 10288163
    Abstract: A static lubricant supply system within a gearbox that delivers lubricant to rotating gears. The lubricant supply system includes a stationary sleeve assembly for delivering the lubricant to a rotating receiver member, shaft, or flange. The sleeve assembly includes bearings, seals, jets, and plenums. The jets are skewed to deliver lubricant in the tangential direction of rotational motion of the receiver member, shaft, or flange. In the radial gap transfer configuration, the sleeve assembly circumscribes the receiver member or shaft. A race in the receiver member or shaft receives the lubricant. Channels within the receiver member, shaft, and gears deliver lubricant to the gears. In the axial gap transfer configuration, the sleeve assembly transfers lubricant to a flange attached to a receiver member. The flange has a race that receives the lubricant from the jets. Channels within the flange, receiver member, and gears deliver lubricant to the gears.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: May 14, 2019
    Assignee: General Electric Company
    Inventors: Brandon Wayne Miller, Gert Johannes van der Merwe, Donald Albert Bradley, Michael Anthony Barnell, Christopher James Kroger
  • Publication number: 20190136958
    Abstract: A planet gear train for an engine casing includes a sun gear rotatable by a shaft, a ring gear, a plurality of planet gears rotatably mounted in a planet carrier and meshing with the sun gear and the ring gear, and a damping system. The damping system includes a soft mount disposed about the shaft and coupling the planet carrier the engine casing. The soft mount includes a flexible inner sleeve and a flexible outer sleeve. The flexible inner sleeve and the flexible outer sleeve are fixedly coupled together at respective central portions thereof near the shaft. The damping system further includes a plurality of damping couplers disposed about an outer flange of the planet carrier. The plurality of damping couplers is configured to flexibly couple the flexible inner sleeve to the flexible outer sleeve.
    Type: Application
    Filed: September 20, 2018
    Publication date: May 9, 2019
    Inventors: Brandon Wayne Miller, Randy M. Vondrell, Donald Albert Bradley, Bugra Han Ertas
  • Patent number: 10274071
    Abstract: An epicyclic gearing arrangement includes a planet gear rotatable on a planet bearing that is mounted via a support pin to a carrier of the epicyclic gearing arrangement. A spring film damper is disposed between the outer surface of the bearing's outer ring and the opposing inner surface of the planet gear and includes an annular gap. The support pin and/or outer ring include oil feed holes that open into the respective annular gap(s).
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: April 30, 2019
    Assignee: General Electric Company
    Inventors: Daniel Alan Niergarth, Brandon Wayne Miller, Bugra Han Ertas, Donald Albert Bradley, Joseph Robert Dickman
  • Patent number: 10234018
    Abstract: A planet gear rotatable on a planet bearing with cylindrical rollers is mounted to a carrier of an epicyclic gearing arrangement. Either the cylindrical outer surface of the support pin or the opposing cylindrical inner surface of the inner ring of the planet bearing includes a network of interconnected grooves. The support pin includes oil feed holes intersecting the grooves. Passages through the planet bearing's inner ring also connect to the grooves. A gas turbine engine includes a fan and LP shaft, which couples a compressor to a turbine. An epicyclic gearing arrangement has a single input from the LP shaft coupled to a sun gear, a single output coupled to the fan's shaft, and a planet bearing with a network of interconnected grooves.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: March 19, 2019
    Assignee: General Electric Company
    Inventors: William Howard Hasting, Kenneth Lee Fisher, Donald Albert Bradley, Joseph Robert Dickman
  • Patent number: 10227928
    Abstract: A gas turbine engine comprises a fan, a compressor, a turbine having first stage blades and second stage blades, the first stage blades rotates in a first direction and the second stage blades rotates in a second direction opposite the first direction. The first stage blades are directly adjacent to one another, a drive in operable input connection with the fan and in operable output connection with the first stage blades and the second stage blades, the first stage blades and the second stage blades driving the fan through the drive.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: March 12, 2019
    Assignee: General Electric Company
    Inventors: Craig Miller Kuhne, Christopher Charles Glynn, Randy M. Vondrell, Andrew Breeze-Stringfellow, Kurt David Murrow, Darek T. Zatorski, Donald Scott Yeager, Nicholas Rowe Dinsmore, Samuel Jacob Martin, Donald Albert Bradley
  • Publication number: 20190048994
    Abstract: An apparatus and a method of retaining a bearing assembly having a bore to a shaft received within the bore, the method comprising physically limiting the axial movement of the bearing assembly on the shaft by a retainer mounted to an end of the shaft and having a portion extending radially beyond the shaft and into an axial path of the bearing assembly.
    Type: Application
    Filed: August 14, 2017
    Publication date: February 14, 2019
    Inventors: William Howard Hasting, Donald Albert Bradley, Randy Thomas Antelo
  • Patent number: 10113633
    Abstract: An epicyclic gearing arrangement includes a planet gear rotatable on a planet bearing that is mounted via a support pin to a carrier of the epicyclic gearing arrangement. A spring film damper is disposed between the cylindrical outer surface of the support pin and the opposing inner surface of the inner ring of the planet bearing and includes an annular gap.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: October 30, 2018
    Assignee: General Electric Company
    Inventors: Daniel Alan Niergarth, Brandon Wayne Miller, Bugra Han Ertas, Donald Albert Bradley, Joseph Robert Dickman
  • Patent number: 10107378
    Abstract: A planet gear train for an engine casing includes a sun gear rotatable by a shaft, a ring gear, a plurality of planet gears rotatably mounted in a planet carrier and meshing with the sun gear and the ring gear, and a damping system. The damping system includes a soft mount disposed about the shaft and coupling the planet carrier the engine casing. The soft mount includes a flexible inner sleeve and a flexible outer sleeve. The flexible inner sleeve and the flexible outer sleeve are fixedly coupled together at respective central portions thereof near the shaft. The damping system further includes a plurality of damping couplers disposed about an outer flange of the planet carrier. The plurality of damping couplers is configured to flexibly couple the flexible inner sleeve to the flexible outer sleeve.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: October 23, 2018
    Assignee: General Electric Company
    Inventors: Brandon Wayne Miller, Randy M. Vondrell, Donald Albert Bradley, Bugra Han Ertas
  • Patent number: 10094335
    Abstract: Embodiments of a compliant shaft for engines are provided herein. In some embodiments, a compliant shaft for a turbine engine may include: a body having a first end configured to be coupled to a shaft of a turbine and a second end coupled to a gear of a gear box, wherein at least a portion of the body is flexible.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: October 9, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Bugra Han Ertas, Kenneth Lee Fisher, Donald Albert Bradley
  • Publication number: 20180187773
    Abstract: A planet gear includes a pin and an annular planet gear rim. The pin has a pin radius. The pin includes a pin outer surface. The annular planet gear rim has an inner radius and an outer radius. The annular planet gear rim includes an inner surface and an outer surface. The inner surface and the pin outer surface define a clearance therebetween. The clearance is greater than 0 when a radial force is applied to the planet gear.
    Type: Application
    Filed: January 5, 2017
    Publication date: July 5, 2018
    Inventors: Darren Lee Hallman, Donald Albert Bradley, Changjie Sun, Bugra Han Ertas