Patents by Inventor Riley Griffin

Riley Griffin 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: 10899461
    Abstract: A hybrid-electric aerial vehicle is disclosed comprising: an airframe; a plurality of longitudinal booms extending radially from the airframe; a passively charged internal combustion engine operatively coupled with a fuel tank, a generator operatively coupled with the passively charged internal combustion engine; a battery bank operatively coupled with the generator; and a plurality of motors. The passively charged internal combustion engine has an intake engine valve, an exhaust engine valve, and a combustion chamber, wherein the intake engine valve is delayed to provide an expansion ratio in the combustion chamber that is greater than a compression ratio in the combustion chamber. Each of said plurality of motors may be positioned at a distal end of one of said plurality of longitudinal booms and be operatively coupled with a propeller, wherein the plurality of motors is electrically coupled with the battery bank and the generator.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: January 26, 2021
    Assignee: Aurora Flight Sciences Corporation
    Inventors: Evangelos Livieratos, Riley Griffin, Nathan Varney, Amanda Kaufman
  • Publication number: 20200385130
    Abstract: An integrated electric propulsion assembly includes a stator including at least a first magnetic element generating first magnetic field. The assembly includes a propulsor with an integrated rotor, the propulsor further including a hub rotatably mounted to the stator and at least a second magnetic element affixed to the hub, the at least a second magnetic element generating a second magnetic field. At least one of the first magnetic field and the second magnetic field varies with respect to time, wherein the varied magnetic field includes generating a magnetic force between the at least a first magnetic element and the at least a second magnetic element, and the magnetic force causes the hub to rotate with respect to the stator.
    Type: Application
    Filed: December 4, 2019
    Publication date: December 10, 2020
    Inventors: Raffaelo Verna, Riley Griffin, Nathan Wiegman
  • Publication number: 20200385139
    Abstract: An electrical propulsor motor includes a stator having a hollow cylinder with an inner cylindrical surface and an outer cylindrical surface, rotor incorporated in a hub of a propulsor and mounted to the stator, including a first cylindrical surface facing the inner cylindrical surface, where the inner cylindrical surface and first cylindrical surface form a first air gap, a second cylindrical surface facing the outer cylindrical surface, wherein the outer cylindrical surface and the second cylindrical surface form a second air gap, and a plurality of axial impeller vanes mounted to at least one of the first cylindrical surface and the second cylindrical surface and within at least one of the first air gap and the second air gap and positioned to force air through the at least one of the first air gap and the second air gap when the rotor rotates about the axis of rotation.
    Type: Application
    Filed: June 24, 2020
    Publication date: December 10, 2020
    Inventors: Raffaelo Verna, Riley Griffin, Nathan Wiegman, Manon Danielle Belzile
  • Publication number: 20200031478
    Abstract: A selectively deployable heated propulsor system which may be integrated into vehicles, airplanes, or any other machinery configured for flight. The system includes a structural feature that includes a mounted propulsor including a rotor and a motor mechanically coupled to the rotor allowing the rotor to rotate when in an activated mode. The mounted propulsor includes a chamber configured to support a first configuration where the propulsor and the rotor are stowed and heated in an enclosed environment, and a second configuration where the rotor is deployed.
    Type: Application
    Filed: May 30, 2019
    Publication date: January 30, 2020
    Inventors: Kyle B. Clark, Martine Rothblatt, Riley Griffin, Augustus Brightman, Steven Arms, Herman Wiegman
  • Publication number: 20200025646
    Abstract: Disclosed herein is a distributed pressure sensor system that quickly detects and counters changes in lift, onset of stall, and flutter. The distributed pressure sensor system may employ a plurality of integrated pressure ports distributed across the span of a wing's leading edge to gather differential pressure measurements. Based on the differential pressure measurements, the distributed pressure sensor system can estimate torque on the fuselage to provide a more efficient estimate for changes in lift, onset of stall, and/or flutter. These estimates may be applied as feedback to the aircraft's control system, thereby eliminating the latency in the existing platform dynamics.
    Type: Application
    Filed: February 2, 2018
    Publication date: January 23, 2020
    Inventors: Riley Griffin, Michael Lieu
  • Patent number: 10520524
    Abstract: Disclosed herein is a distributed pressure sensor system that quickly detects and counters changes in lift, onset of stall, and flutter. The distributed pressure sensor system may employ a plurality of integrated pressure ports distributed across the span of a wing's leading edge to gather differential pressure measurements. Based on the differential pressure measurements, the distributed pressure sensor system can estimate torque on the fuselage to provide a more efficient estimate for changes in lift, onset of stall, and/or flutter. These estimates may be applied as feedback to the aircraft's control system, thereby eliminating the latency in the existing platform dynamics.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: December 31, 2019
    Assignee: Aurora Flight Sciences Corporation
    Inventors: Riley Griffin, Michael Lieu
  • Patent number: 10112202
    Abstract: Disclosed herein is a cyclonic system for performing subtractive machining in microgravity systems. The cyclonic system comprises: an enclosure, a blower, and a debris collection module to collect the debris from the milling machine. The enclosure includes a top plate, a base plate, and a tapered side wall joining the top plate to the base plate. The enclosure defines a chamber to house a milling machine having a cutter tool. The blower generates an airstream that induces a cyclonic airflow to achieve cyclonic separation of debris within the enclosure. In operation, the cyclonic airflow urges the debris from the milling machine toward the base plate and into the milling machine.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: October 30, 2018
    Assignee: Aurora Flight Sciences Corporation
    Inventors: Daniel W. Dichter, Riley Griffin, Roshan Kalghatgi, Scott McNee
  • Publication number: 20180194484
    Abstract: A hybrid-electric aerial vehicle is disclosed comprising: an airframe; a plurality of longitudinal booms extending radially from the airframe; a passively charged internal combustion engine operatively coupled with a fuel tank, a generator operatively coupled with the passively charged internal combustion engine; a battery bank operatively coupled with the generator; and a plurality of motors. The passively charged internal combustion engine has an intake engine valve, an exhaust engine valve, and a combustion chamber, wherein the intake engine valve is delayed to provide an expansion ratio in the combustion chamber that is greater than a compression ratio in the combustion chamber. Each of said plurality of motors may be positioned at a distal end of one of said plurality of longitudinal booms and be operatively coupled with a propeller, wherein the plurality of motors is electrically coupled with the battery bank and the generator.
    Type: Application
    Filed: January 10, 2018
    Publication date: July 12, 2018
    Inventors: Evangelos Livieratos, Riley Griffin, Nathan Varney, Amanda Dropkin
  • Publication number: 20180141641
    Abstract: An aerial vehicle comprising an airframe, an aircraft flight controller to provide an output control signal, and a planar printed circuit board positioned on the airframe. The printed circuit board may include coupled thereto a processor, a rate gyroscope, and at least three accelerometers. The processor is configured to generate an actuation signal based at least in part on a feedback signal received from at least one of said rate gyroscope and the at least three accelerometers. The processor communicates the actuation signal to said aircraft flight controller, which is configured to adjust the output control signal based on said actuation signal.
    Type: Application
    Filed: October 19, 2017
    Publication date: May 24, 2018
    Inventors: Riley Griffin, Edward Scott, Sean Humbert
  • Publication number: 20180135798
    Abstract: A gimbal stabilizing system for an aircraft having an airframe is disclosed. The gimbal stabilizing system may comprise a gimbal apparatus having at least one gimbal actuator to adjust a position of the gimbal apparatus about an axis, wherein the gimbal apparatus is positioned on the airframe, an angular acceleration apparatus positioned on the airframe to generate an angular acceleration signal reflecting an angular acceleration of the airframe, and a gimbal controller operatively coupled to each of said angular acceleration apparatus and said gimbal apparatus. The gimbal controller may be configured to generate a gimbal control signal to compensate for the angular acceleration of the airframe based at least in part on a feedback control loop and a feedforward control loop, the feedforward control loop having the angular acceleration signal as an input thereto.
    Type: Application
    Filed: November 17, 2017
    Publication date: May 17, 2018
    Inventors: Riley Griffin, Jeffery Saunders
  • Patent number: D903577
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: December 1, 2020
    Inventors: Kyle Clark, Tom O'Leary, Riley Griffin