Patents by Inventor Martin Johnson

Martin Johnson 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).

  • Flow sleeve for thermal control of a double-wall turbine shell and related method
    Patent number: 9453429
    Abstract: A turbine casing includes at least one shell adapted to enclose one or more turbine stages in a gas turbine engine; an air inlet in the at least one shell; a flow sleeve secured to an inside surface of the at least one shell, the flow sleeve comprising at least two arcuate segments. Each arcuate segment includes an arcuate base, a pair of sidewalls extending radially outwardly of the base thereby forming a circumferentially-extending flow channel defined by the base, the sidewalls and the inside surface. The air inlet is aligned with the flow channel and the sleeve is configured to distribute air flowing in the channel into spaces proximate the one or more turbine stages in circumferential, radial and axial directions, including along the inside surface of the at least one shell.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: September 27, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Radu Ioan Danescu, David Martin Johnson, Kenneth Damon Black, Christopher Paul Cox, Ozgur Bozkurt
  • System and method relating to axial positioning turbine casings and blade tip clearance in gas turbine engines
    Patent number: 9441499
    Abstract: A system for passively varying an axial position of an inner casing of a gas turbine pursuant to changing pressure in a flowpath during transient engine operation. The system may include: a connection assembly slidably connecting the inner casing to the outer casing for axial movement of the inner casing between a first position and a second position; means for pressurizing the annulus relative to a flowpath pressure; biasing means for axially preloading the inner casing toward the first position; and an inner casing receiving surface configured to receive a pressure in the annulus for axially loading the inner casing in opposition to the axial preload of the biasing means.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: September 13, 2016
    Assignee: General Electric Company
    Inventors: Matthew Stephen Casavant, David Martin Johnson
  • Inducer guide vanes
    Patent number: 9441540
    Abstract: According to one embodiment, there is disclosed an inducer assembly for use with a gas turbine engine. The inducer assembly may include a cavity. The inducer assembly may also include an inducer in fluid communication with the cavity. Moreover, the inducer assembly may include at least one guide vane disposed within the cavity.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: September 13, 2016
    Assignee: General Electric Company
    Inventors: Richard William Johnson, David Martin Johnson, Bradley James Miller, Mitchell Merrill
  • Flow inducer for a gas turbine system
    Patent number: 9435206
    Abstract: A system includes an inducer assembly configured to receive a fluid flow from compressor fluid source and to turn the fluid flow in a substantially circumferential direction into the exit cavity. The inducer assembly includes multiple flow passages. Each flow passage includes an inlet configured to receive the fluid flow and an outlet configured to discharge the fluid flow into the exit cavity, and each flow passage is defined by a first wall portion and a second wall portion extending between the inlet and the outlet. The first wall portion includes a first surface adjacent the outlet that extends into the exit cavity.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: September 6, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Richard William Johnson, Bradley James Miller, David Martin Johnson
  • Gas turbine thermal control and related method
    Patent number: 9422824
    Abstract: Thermal control is provided for a gas turbine casing by supplying thermal control gas from a compressor to a space between an outer casing and an inner casing, and transferring the thermal control gas from the space through the opening in the inner casing via a plurality of holes defined through a plate attached to an outer surface of the inner casing. The holes are arranged with a predetermined non-uniform distribution corresponding to a desired preferential impingement pattern for providing non-uniform heat transfer. A gas turbine thermal control assembly includes structure providing preferential heat transfer from the inner casing during operation of the gas turbine via a thermal control gas flow path from radially outside of the inner casing into the interior of the gas turbine.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: August 23, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Matthew Stephen Casavant, Kenneth Damon Black, David Martin Johnson, Radu Ioan Danescu
  • SYSTEM AND METHOD FOR 3D PRINTING ON PERMEABLE MATERIALS
    Publication number: 20160185041
    Abstract: Thermoplastic 3D objects are printed directly onto permeable materials with a high strength bond. The 3D object can be attached to the permeable material at one side where the bottom layer of the 3D object can be attached to the permeable material or alternatively, at an internal layer where portions of the 3D object are on opposite sides of the permeable material. In order to improve the adhesion of the 3D object to the permeable material, the bonding layer of the liquid thermoplastic material that is printed directly onto the permeable material can be deposited at modified 3D printer settings that can include a hotter than normal material deposition temperature. Additional build layers of the liquid thermoplastic material are printed on the bonding layer to complete the 3D objects.
    Type: Application
    Filed: December 28, 2015
    Publication date: June 30, 2016
    Inventors: Jessica Lisagor, Andrew R. Miller, Martin Johnson, Nickalaus Podgursky, Leigh Herran
  • Power-Optimized Image Capture and Push
    Publication number: 20160134794
    Abstract: An example security sensor includes a battery power supply, camera coupled to the battery power supply to receive power, activity sensor, processor, and microcontroller. The processor is placed in a sleep state and is wakeable to an awake state. The processor coupled to the battery power supply, and coupled to the camera to receive and process image data including images of an activity within a zone. The microcontroller is coupled to the battery power supply, coupled to the activity sensor to receive interrupts responsive to detection by the activity sensor of the activity within the zone proximate the security sensor, coupled to the processor to send and receive data, and, responsive to receiving a first interrupt from the activity sensor, place the processor in an awake state to signal the camera to capture a set of images and to receive and process the image data including the set of images.
    Type: Application
    Filed: November 10, 2015
    Publication date: May 12, 2016
    Inventors: Ethan Grabau, Tyler Crawford, Martin Johnson, Ruchir Chauhan, Jonathan Jensen
  • Security Sensor Power Management
    Publication number: 20160132099
    Abstract: By way of example, a low-power processing device is disclosed. The low-power processing device includes a battery power supply, a processor, and a micro-controller. The processor sleeps by reducing voltage to a non-transitory memory of the processor and storing system settings in a non-transitory memory of the microcontroller, which is coupled to the processor via a communications bus. The processor is further coupled to the battery power supply to receive power. The microcontroller is coupled to the processor via the communications bus to send and receive data. The microcontroller sends an interrupt (A) to the processor and the processor receives A and wakes up by polling the microprocessor for an event associated with A and loads the system settings via the communications bus from the non-transitory memory of the microcontroller into the non-transitory memory of the processor.
    Type: Application
    Filed: November 10, 2015
    Publication date: May 12, 2016
    Inventors: Ethan Grabau, Tyler Crawford, Martin Johnson, Ruchir Chauhan, Jonathan Jensen
  • DRAG REDUCTION SYSTEM
    Publication number: 20160123711
    Abstract: The invention relates to a drag reduction system, more specifically a forward mounted drag reduction system for use on extended range artillery. There is provided a long range artillery projectile having forward end comprising a fuze, an aft located base unit and located therebetween a projectile body defining cavity which comprises a payload, a forwardly located gas generator capable of generating a gas flow, and an ignition device to ignite the gas generator; preferably at a predetermined time after the projectile is launched.
    Type: Application
    Filed: May 30, 2014
    Publication date: May 5, 2016
    Applicant: BAE SYSTEMS plc
    Inventors: DENNIS JOSEPH FLYNN, PAUL MARTIN LOCKING, MARTIN JOHNSON
  • IMPROVED WASTEWATER TREATMENT SYSTEMS AND METHODS
    Publication number: 20160039693
    Abstract: The present invention relates to improved wastewater treatment systems and methods. In one embodiment, the present invention utilizes biologics and the final effluent of the treated wastewater is remarkably clean, and has low levels of hazardous chemicals, unwanted nutrient values and/or total solids. Advantageously, the wastewater treatment system and method of the present invention reduces the use of chemical compounds in the treatment process. Further, valuable biomasses can be produced or metals recovered from the wastewater using the treatment process of the present invention.
    Type: Application
    Filed: March 13, 2014
    Publication date: February 11, 2016
    Inventors: ADELHEID R. KUEHNLE, MARTIN JOHNSON, Robert J. SCHURR
  • Gas turbine casing thermal control device
    Patent number: 9238971
    Abstract: A device for directing gas impingement to an inner casing of a gas turbine may include a plate configured for attachment to the outer surface of the inner casing. The plate has a first surface opposing the inner casing when the plate is attached to an area of the inner casing and a second surface opposite the first surface. The plate defines a plurality of holes through the plate from the first surface to the second surface. The holes are arranged with a predetermined non-uniform distribution in the plate corresponding to a desired preferential impingement pattern for providing non-uniform heat transfer from the area during operation of the gas turbine so as to control temperature of the inner casing across the area. Various options and modifications are possible. Related gas turbine assemblies are also disclosed.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: January 19, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Matthew Stephen Casavant, Kenneth Damon Black, David Martin Johnson, Radu Ioan Danescu
  • SYSTEM AND METHOD FOR ROBUST SIMULTANEOUS DRIVER MEASUREMENT FOR A SPEAKER SYSTEM
    Publication number: 20150382121
    Abstract: A system and method for measuring the performance of a plurality of transducers integrated in one or more loudspeakers is described. The method simultaneously drives each transducer to emit sounds corresponding to distinct orthogonal test signals. A listening device senses sounds produced by the orthogonal test signals and analyzes the sensed audio signal to determine the performance of each transducer. By using orthogonal test signals, the multiple transducers may be measured and/or characterized simultaneously and with limited affect from extraneous noises.
    Type: Application
    Filed: March 5, 2014
    Publication date: December 31, 2015
    Inventors: Afrooz Family, Tom-Davy Saux, Martin Johnson
  • WASTEWATER TREATMENT SYSTEMS AND METHODS
    Publication number: 20150368132
    Abstract: The present invention relates to improved wastewater treatment systems and methods. In one embodiment, the present invention utilizes microbial consortia and the final effluent of the treated wastewater is remarkably clean, and has low levels of hazardous chemicals, unwanted nutrient values and/or total solids. Advantageously, the wastewater treatment system and method of the present invention reduces the use of chemical compounds in the treatment process. Further, valuable biomasses can be produced from the wastewater using the treatment process of the present invention.
    Type: Application
    Filed: August 31, 2015
    Publication date: December 24, 2015
    Inventors: ADELHEID R. KUEHNLE, MARTIN JOHNSON, Robert J. Schurr
  • Wastewater treatment methods
    Patent number: 9120686
    Abstract: The present invention relates to improved wastewater treatment systems and methods. In one embodiment, the present invention utilizes microbial consortia and the final effluent of the treated wastewater is remarkably clean, and has low levels of hazardous chemicals, unwanted nutrient values and/or total solids. Advantageously, the wastewater treatment system and method of the present invention reduces the use of chemical compounds in the treatment process. Further, valuable biomasses can be produced from the wastewater using the treatment process of the present invention.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: September 1, 2015
    Assignee: Kuehnle AgroSystems, Inc.
    Inventors: Adelheid R. Kuehnle, Martin Johnson, Robert J. Schurr
  • Thermal isolation apparatus
    Patent number: 9121301
    Abstract: A thermal isolation apparatus is provided and includes an annular casing surrounding a turbine bucket stage and defining an annular recess from an interior facing surface thereof, an annular shroud disposed within the casing to provide for a predefined clearance about rotating bucket tips of the turbine bucket stage, the shroud including an annular main member and an annular flange extending from an outwardly facing surface of the main member and being sized to fit within the recess and a thermal barrier formed of porous material, which is interposed between opposing surfaces of the casing and the flange within the recess.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: September 1, 2015
    Assignee: General Electric Company
    Inventors: Donald Earl Floyd, David Martin Johnson
  • MODIFIED ELECTRICAL DEVICES
    Publication number: 20150229079
    Abstract: In one example, a modified electrical device includes a body and at least one connector on the body to make power and control connections with an active cover plate. A system includes an active cover plate comprising low voltage circuitry and a first interface and a modified electrical device. The modified electrical device includes high voltage circuitry and a second interface to connect to the first interface to supply low voltage to the active cover plate. A method for controlling a flow of power through a modified electrical device is also provided.
    Type: Application
    Filed: April 3, 2015
    Publication date: August 13, 2015
    Applicant: SNAPPOWER
    Inventors: Jeremy C. Smith, Sean D. Watkins, Martin Johnson
  • Modified electrical devices
    Patent number: 9035181
    Abstract: In one example, a modified electrical device includes a body and at least one connector on the body to make power and control connections with an active cover plate. A system includes an active cover plate comprising low voltage circuitry and a first interface and a modified electrical device. The modified electrical device includes high voltage circuitry and a second interface to connect to the first interface to supply low voltage to the active cover plate. A method for controlling a flow of power through a modified electrical device is also provided.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: May 19, 2015
    Inventors: Jeremy Smith, Sean Watkins, Martin Johnson
  • Active cover plates
    Patent number: 9035180
    Abstract: In one example, an active cover plate includes a faceplate, a load and a spring clip extending rearward from the faceplate to interface with a receptacle body, wherein the spring clip includes a flexible conductive portion connected to the face plate by a first end and a non-conductive portion connected to an opposite end of the flexible conductive portion, wherein the spring clips extract electrical power from the receptacle body to energize the load.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: May 19, 2015
    Inventors: Jeremy Smith, Phil Dietz, Sean Watkins, Jan Finlinson, Martin Johnson, Jeremy Willden
  • Turbomachine including an inner-to-outer turbine casing seal assembly and method
    Patent number: 9017015
    Abstract: A turbomachine includes an inner casing component having a first end that extends to a second end and a seal member. An outer casing component is coupled to the inner casing component. The annular outer casing component includes a first end portion that extends to a second end portion and a seal element that aligns with the seal member of the annular inner casing component to form a seal passage. A seal is arranged in the seal passage. The seal includes a first end section that extends to a second end section through an intermediate zone. The first end section includes a recessed portion and the second end section includes a connecting portion. The connecting portion is configured and disposed to nest within the recessed portion to form a substantially continuous seal.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: April 28, 2015
    Assignee: General Electric Company
    Inventors: Matthew Stephen Casavant, David Martin Johnson
  • System for cooling and purging exhaust section of gas turbine engine
    Patent number: 8979477
    Abstract: A system is provided with a turbine exhaust strut configured to provide a bi-directional airflow. The turbine exhaust strut includes a first portion having a first flow passage configured to flow a fluid in a first direction between inner and outer exhaust walls of a turbine exhaust section, and a second portion having a second flow passage configured to flow the fluid in a second direction between the inner and outer exhaust walls of the turbine exhaust section. Furthermore, the first and second directions are opposite from one another.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: March 17, 2015
    Assignee: General Electric Company
    Inventors: David Martin Johnson, Radu Ioan Danescu, Srinivasarao Pakkala, Piotr Edward Kobek