Patents by Inventor Stephen Long

Stephen Long 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: 12024308
    Abstract: A propulsion system for an aircraft includes a propeller assembly, a controller, and a pump system. The propeller assembly includes a propeller and a power system, the power system including an electric motor and a motor converter. The controller is connected to the power system and configured to switch the power system into a power-off arrangement in response to a temperature of the motor converter being greater than a threshold temperature. The pump system includes a pump and a coolant circuit that cools the motor converter. The pump is coupled to the propeller and to the motor such that rotation of either drives the pump.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: July 2, 2024
    Assignee: Rolls-Royce Corporation
    Inventors: David Locascio, Michael Dougherty, Stephen Long, Peter Schenk
  • Publication number: 20230192309
    Abstract: A propulsion system for an aircraft includes a propeller assembly, a controller, and a pump system. The propeller assembly includes a propeller and a power system, the power system including an electric motor and a motor converter. The controller is connected to the power system and configured to switch the power system into a power-off arrangement in response to a temperature of the motor converter being greater than a threshold temperature. The pump system includes a pump and a coolant circuit that cools the motor converter. The pump is coupled to the propeller and to the motor such that rotation of either drives the pump.
    Type: Application
    Filed: December 16, 2021
    Publication date: June 22, 2023
    Inventors: David Locascio, Michael Dougherty, Stephen Long, Peter Schenk
  • Patent number: 11628949
    Abstract: Systems and methods are disclosed for providing flexible, scalable, and controllable electrical power to an aircraft. In some embodiments, a modular power unit comprises a container containing a power generation unit, a control system, a conditioning system, and an environmental control system. The power generation unit produces a generated power. The control system provides control signals to the power generation unit and controls at least one parameter of the generated power. The conditioning system receives and conditions the generated power and provides an output power to the power bus of the aircraft. The environmental control system provides a temperature regulating fluid to the power generation unit.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: April 18, 2023
    Assignee: Rolls-Royce North American Technologies, Inc.
    Inventors: Stephen Long, Dwayne Bevis, Sean Guitar
  • Patent number: 11542032
    Abstract: A hybrid interchangeable battery evaluation tool (HIBET) is provided. HIBET determines an amount of electrical energy and an amount of jet fuel necessary for a hybrid electric aircraft to complete a flight based on a range of the flight, a payload of the hybrid electric aircraft, an indication of a battery mass limitation of the hybrid electric aircraft, and an optimization of an energy split between the electrical energy and the jet fuel. HIBET causes an indication of the amount of electrical energy to be displayed in a graphical user interface and/or to be otherwise outputted.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: January 3, 2023
    Assignee: ROLLS-ROYCE NORTH AMERICAN TECHNOLOGIES INC.
    Inventors: Stephen Long, Dwayne Bevis, Sean Guitar, Michael J. Armstrong
  • Patent number: 10920546
    Abstract: An exemplary method of the present disclosure includes causing, by a processing system proximate to the wellbore, injection of the lift gas into the wellbore at a first gas injection rate; obtaining, by the processing system, a first indication of a parameter associated with the wellbore, an arrival of a first fluid at a wellhead associated with the wellbore, or a composition of the first fluid; determining, by the processing system and based on the first indication, at least one of: a second gas injection rate of the intermittent gas lift system, a first period to inject the lift gas with the intermittent gas lift system, or a second period, subsequent to the first period, with no injection of the lift gas by the intermittent gas lift system; and operating, by the processing system, the intermittent gas lift system according to the determination.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: February 16, 2021
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Ross Moffett, Ashish David Rakhit, Stephen Long, Michael S. Juenke, Stephen E. Cannon
  • Publication number: 20210009282
    Abstract: A hybrid interchangeable battery evaluation tool (HIBET) is provided. HIBET determines an amount of electrical energy and an amount of jet fuel necessary for a hybrid electric aircraft to complete a flight based on a range of the flight, a payload of the hybrid electric aircraft, an indication of a battery mass limitation of the hybrid electric aircraft, and an optimization of an energy split between the electrical energy and the jet fuel. HIBET causes an indication of the amount of electrical energy to be displayed in a graphical user interface and/or to be otherwise outputted.
    Type: Application
    Filed: July 11, 2019
    Publication date: January 14, 2021
    Applicant: Rolls-Royce North American Technologies Inc.
    Inventors: Stephen Long, Dwayne Bevis, Sean Guitar, Michael J. Armstrong
  • Publication number: 20200277844
    Abstract: An exemplary method of the present disclosure includes causing, by a processing system proximate to the wellbore, injection of the lift gas into the wellbore at a first gas injection rate; obtaining, by the processing system, a first indication of a parameter associated with the wellbore, an arrival of a first fluid at a wellhead associated with the wellbore, or a composition of the first fluid; determining, by the processing system and based on the first indication, at least one of: a second gas injection rate of the intermittent gas lift system, a first period to inject the lift gas with the intermittent gas lift system, or a second period, subsequent to the first period, with no injection of the lift gas by the intermittent gas lift system; and operating, by the processing system, the intermittent gas lift system according to the determination.
    Type: Application
    Filed: May 15, 2020
    Publication date: September 3, 2020
    Inventors: Ross MOFFETT, Ashish DAVID RAKHIT, Stephen LONG, Michael S. JUENKE, Stephen E. CANNON
  • Publication number: 20200262579
    Abstract: Systems and methods are disclosed for providing flexible, scalable, and controllable electrical power to an aircraft. In some embodiments, a modular power unit comprises a container containing a power generation unit, a control system, a conditioning system, and an environmental control system. The power generation unit produces a generated power. The control system provides control signals to the power generation unit and controls at least one parameter of the generated power. The conditioning system receives and conditions the generated power and provides an output power to the power bus of the aircraft. The environmental control system provides a temperature regulating fluid to the power generation unit.
    Type: Application
    Filed: February 20, 2019
    Publication date: August 20, 2020
    Applicant: Rolls-Royce North American Technologies Inc.
    Inventors: Stephen Long, Dwayne Bevis, Sean Guitar
  • Patent number: 10689958
    Abstract: An exemplary method of the present disclosure includes causing, by a processing system proximate to the wellbore, injection of the lift gas into the wellbore at a first gas injection rate; obtaining, by the processing system, a first indication of a parameter associated with the wellbore, an arrival of a first fluid at a wellhead associated with the wellbore, or a composition of the first fluid; determining, by the processing system and based on the first indication, at least one of: a second gas injection rate of the intermittent gas lift system, a first period to inject the lift gas with the intermittent gas lift system, or a second period, subsequent to the first period, with no injection of the lift gas by the intermittent gas lift system; and operating, by the processing system, the intermittent gas lift system according to the determination.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: June 23, 2020
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Ross Moffett, Ashish Rakhit, Stephen Long, Michael S. Juenke, Stephen E. Cannon
  • Publication number: 20180179869
    Abstract: An exemplary method of the present disclosure includes causing, by a processing system proximate to the wellbore, injection of the lift gas into the wellbore at a first gas injection rate; obtaining, by the processing system, a first indication of a parameter associated with the wellbore, an arrival of a first fluid at a wellhead associated with the wellbore, or a composition of the first fluid; determining, by the processing system and based on the first indication, at least one of: a second gas injection rate of the intermittent gas lift system, a first period to inject the lift gas with the intermittent gas lift system, or a second period, subsequent to the first period, with no injection of the lift gas by the intermittent gas lift system; and operating, by the processing system, the intermittent gas lift system according to the determination.
    Type: Application
    Filed: December 22, 2016
    Publication date: June 28, 2018
    Inventors: Ross Moffett, Ashish RAKHIT, Stephen LONG, Michael S. JUENKE, Stephen E. CANNON
  • Patent number: 9390619
    Abstract: An accessory for a device includes an actuator that is configured to be activated to operate a switch on the device when the accessory is physically engaged with the device. The switch is operable to cause the device to switch between on and off modes in which the device is configured to function. The off mode is a mode in which the device consumes less energy than when in the on mode. A controller is communicatively coupled with the actuator and is configured to activate the actuator to operate the switch when power is applied to the actuator.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: July 12, 2016
    Assignee: Smiths Detection-Watford Limited
    Inventors: Steve Richardson, Stephen Long
  • Patent number: 8635027
    Abstract: A method of determining common three-dimensional structural features of protein surfaces is provided, as is use of representations of these common structures in molecular database searching and in designing focused molecular libraries. The method is particularly concerned with the analysis and representation of protein surfaces such as b-turns, loops and contact surfaces. In one form, the method identifies common locations and orientations of amino acid side-chains, simplified as C?-C? vectors. In another form, the method identifies common regions of surface charge represented by grid points in three-dimensional space. Further provided are common three dimensional structural features of proteins that can be used to search molecular databases for the purposes of identifying molecules that match these common three dimensional structural features.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: January 21, 2014
    Assignee: The University of Queensland
    Inventors: Mark Leslie Smythe, Tran Trung Tran, Darryn Bryant, Stephen Long, Peter Adams
  • Publication number: 20100095669
    Abstract: The invention relates to a method of actuating by means of a wax actuator and to a wax actuator. The wax actuator (10, 100, 200) includes a wax expansion generator comprising a housing (12) defining a chamber (18) which is partially filled with wax (20.1) and partially filled with hydraulic fluid, the wax (20.1) and the hydraulic fluid being separated by at least one sealing interface (20.2, 202), and heating means (22) for heating the wax (20.1) to cause it to melt and expand. The wax actuator (10, 100, 200) further includes a hydraulic transmission device comprising a hydraulic line (38) in communication with the hydraulic fluid within the chamber (18) and a connector (40) at a downstream end of the hydraulic line (38) for use in connecting the hydraulic line (38) to a working object.
    Type: Application
    Filed: March 14, 2008
    Publication date: April 22, 2010
    Applicant: CSIR
    Inventors: Philip Wayne Loveday, Craig Stephen Long
  • Publication number: 20100036540
    Abstract: An apparatus comprised of a power source, a set of primary loads, a set of life extension loads, and a controller. The power source is capable of supplying power and the set of primary loads is capable of being operated using the power. The set of life extension loads is capable of being operated using the power and capable of extending life of the set of primary loads. The controller is capable of controlling an operation of the set of primary loads and the set of life extension loads to optimize a total systems operating metric consisting of performance, energy use, and life to reduce a total cost.
    Type: Application
    Filed: August 5, 2008
    Publication date: February 11, 2010
    Inventors: John Lyle Vian, Stephen Long-En Chiu, Alexander Alexandrovich Bogdanov, Joseph Sherman Breit
  • Publication number: 20090318311
    Abstract: A method of determining common three-dimensional structural features of protein surfaces is provided, as is use of representations of these common structures in molecular database searching and in designing focused molecular libraries. The method is particularly concerned with the analysis and representation of protein surfaces such as b-turns, loops and contact surfaces. In one form, the method identifies common locations and orientations of amino acid side-chains, simplified as C?-C? vectors. In another form, the method identifies common regions of surface charge represented by grid points in three-dimensional space. Further provided are common three dimensional structural features of proteins that can be used to search molecular databases for the purposes of identifying molecules that match these common three dimensional structural features.
    Type: Application
    Filed: August 17, 2009
    Publication date: December 24, 2009
    Inventors: Mark Leslie Smythe, Tran Trung Tran, Darryn Bryant, Stephen Long, Peter Adams
  • Publication number: 20070214894
    Abstract: Silicon-based high pressure sensor modules are manufactured in an array arrangement, incorporating a low temperature cofired ceramic (LTCC) substrate. The LTCC substrate can withstand high pressures. Bossed containers filled with oil are mounted on the substrate in an array. These bossed containers house the sensor cells which are composed of a sensor handle wafer and a diaphragm. The top surface of these bossed containers are flexible and deflect under pressure. By controlling the surface area and the thickness of the top surface, the pressure sensors can be configured to measure a wide range of pressures. The oil transfers pressure from the bossed container to the diaphragm of the sensor cell while protecting the sensor cell from high pressures and harsh media.
    Type: Application
    Filed: April 27, 2007
    Publication date: September 20, 2007
    Inventors: Timothy Vas, Timothy Betzner, Stephen Long
  • Publication number: 20070157699
    Abstract: A sensor module is provided having a compact housing containing a sensor. A low temperature co-fired ceramic substrate is located on the housing. The sensor and signal processing circuitry are located on the low temperature co-fired ceramic substrate. The sensor module further includes a metal shield substantially encapsulating the sensor.
    Type: Application
    Filed: January 9, 2006
    Publication date: July 12, 2007
    Inventors: Gregory Manlove, Stephen Long, Hamid Borzabadi, Timothy Vas, Kevin Hawes
  • Publication number: 20060248957
    Abstract: A silicon-based high pressure sensor module incorporates a low temperature cofired ceramic (LTCC) substrate. The LTCC substrate can withstand high pressures. A bossed container filled with oil is mounted on the substrate and houses a sensor cell. The top surface of the bossed container is flexible and deflects under pressure. By controlling the surface area and the thickness of the top surface, the pressure sensor can be configured to measure a wide range of pressures. The oil transfers pressure from the bossed container to the diaphragm of the sensor cell while protecting the sensor cell from high pressures and harsh media.
    Type: Application
    Filed: May 9, 2005
    Publication date: November 9, 2006
    Inventors: Timothy Vas, Timothy Betzner, Stephen Long
  • Publication number: 20060144156
    Abstract: A technique for manufacturing an integrated pressure sensor includes a number of steps. Initially, a substrate with conductive electrical traces located on first and second sides of the substrate is provided. A plurality of compensation circuits are positioned in an array on the first side of the substrate in electrical contact with one or more of the conductive electrical traces on the first side of the substrate. A plurality of pressure sensors are positioned on the second side of the substrate in electrical contact with one or more of the conductive electrical traces on the second side of the substrate. Each one of the sensors is associated with one of the compensation circuits to form a plurality of pressure sensor-compensation circuit pairs. The substrate includes conductive vias to electrically connect each of the sensor-compensation circuit pairs. Each of the compensation circuits provides temperature compensation for an associated one of the sensors.
    Type: Application
    Filed: January 3, 2005
    Publication date: July 6, 2006
    Inventors: Hamid Borzabadi, Dennis Koglin, Stephen Long, Timothy Vas
  • Patent number: D759901
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: June 21, 2016
    Inventor: Stephen Long