Patents Assigned to Southwest Research Institute
  • Patent number: 10385771
    Abstract: A four stroke internal combustion engine with dedicated exhaust gas recirculation and method of operating such engine, wherein the engine comprises a plurality of combustion cylinders including main cylinders and a dedicated exhaust gas recirculation cylinder, wherein each cylinder includes a piston; a crankshaft, which is rotatable in a direction, and defines a main crankshaft axis, and includes a plurality of crankpins. Each of the crankpins is coupled to at least one of the pistons. The crankpins affixed to the pistons of the main cylinders are spaced at an interval around the main crankshaft axis. The crankpin affixed to the piston of the dedicated exhaust gas recirculation cylinder is spaced at an offset of 5 to 50 degrees from the interval in either direction relative to the direction of crankshaft rotation.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: August 20, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Raphael Gukelberger, Steven H. Almaraz
  • Patent number: 10378411
    Abstract: The present disclosure is directed at a dosing method and apparatus for treatment of reductant urea solutions with water soluble organometallic catalyst precursors which convert to active catalyst compounds in diesel exhaust gas systems. The active catalysts then promote hydrolysis of isocyanic acid into ammonia and/or decomposition of relatively high molecular weight deposits which deposits may otherwise reduce selective catalytic reduction efficiency.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: August 13, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Cary A. Henry, Ryan C. Hartley
  • Patent number: 10369742
    Abstract: Reinforcement systems for additive manufacturing are disclosed. In some embodiments, the reinforcement systems include a print head assembly including a print head that is configured to form a plurality of layers of an additively manufactured article, and a reinforcement head. The reinforcement head may be configured to form at least one reinforcement element on or within a working layer of the plurality of layers formed by the print head. Additive manufacturing systems including such reinforcement systems and methods of additive manufacturing using those reinforcement systems are also disclosed.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: August 6, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Cliff James Scribner, Albert Joseph Parvin, Jr., Darrel Ray Barnette
  • Patent number: 10350200
    Abstract: The present invention is directed at aqueous suspensions of oxime compounds, such as 2-pyridine aldoxime methyl chloride (2-PAM Cl) for autoinjectors. The suspensions are able to provide 600 mg of 2-PAM Cl in one relatively small dose of less than or equal to 1.0 mL, and are particularly useful for placement in relatively small size autoinjectors.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: July 16, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Hong Dixon, Joseph A. McDonough, Larry A. Cabell
  • Patent number: 10352909
    Abstract: Various embodiments of magnetostrictive transducers (MsTs) for detecting defects in a tubular structure comprise one or more AC coils and one or more magnets. The transducer has a pair of coils (or two coil elements), which are spaced 180 degrees apart relative to the circumference of the tubular structure. Each MsT is selectively operable or configurable so that it may generate either torsional or flexural guided waves.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: July 16, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Sergey A Vinogradov, Charles Duffer, Glenn M. Light
  • Patent number: 10352239
    Abstract: A method of filtering air entering the intake opening of a gas turbine engine. A straightening tube provides a straight channel for incoming air flow. A flow redirector provides a path for air flow that is at right angles to the channel provided by the straightening tube and that leads to the intake opening of the engine. A filter at the downstream end of the flow redirector has a pair of rollers for unrolling and re-rolling a roll of adhesive tape, with an exposed section of the adhesive tape blocking the downstream end of the flow redirector and capturing particles in the air flow. The rollers are activated as needed to expose fresh sections of tape.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: July 16, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Klaus Brun, Jacob M. Delimont
  • Patent number: 10354845
    Abstract: An atmospheric pressure pulsed arc plasma source and method of using including a housing having a housing opening therein; an insulator tube having an insulator tube opening therein, retained within the housing opening; and a conductive tube, retained within the insulator tube opening. A nozzle is retained by the housing. A feed path is defined in the conductive tube and the nozzle and a gas feed port is operatively coupled to the feed path. Feedstock is provided in the feed path and electrically coupled to the conductive tube. A pulsed DC power source provides a pulsed voltage to the conductive tube. The plasma source emits a discharge stream having a temperature that is less than 50° C. from the nozzle and a coating is formed on a substrate.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: July 16, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Vasiliki Zorbas Poenitzsch, Ronghua Wei, Edward Langa, Kent E. Coulter
  • Patent number: 10316970
    Abstract: A Ti—Si—C—N coating for a piston ring and a method forming such coating, wherein the deposited coating exhibits a thickness in the range of 10.0 micrometers to 20.0 micrometers and exhibits a coefficient of friction of less than 0.15 and a wear rate of less than 10×10?6 mm3/N/m. The coefficient of friction being measured on a Plint TE77 and the wear rate being measured against an alumina ball of 0.25 inches in diameter at a load of 1 N at 100 rpm in a dry environment. The deposited Ti—Si—C—N coating includes nanocrystalline phases in an amorphous matrix.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: June 11, 2019
    Assignee: Southwest Research Institute
    Inventors: Jianliang Lin, Ronghua Wei, Peter Mark Lee, Daniel Christopher Bitsis, Jr.
  • Patent number: 10317332
    Abstract: The present invention relates to a system, apparatus or and method to quantify features of relatively small defects or anomalies on a selected surface. Such defects may be associated with localized corrosion, such as pitting, that takes place on the surface of a metal exposed to a metallic environment.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: June 11, 2019
    Assignee: Southwest Research Institute
    Inventors: Osvaldo Pensado, Pavan Kumar Shukla
  • Patent number: 10310091
    Abstract: A system and method for providing time stamps protected from GPS timing signal attacks. A GPS receiver receives a GPS time data, and a local clock provides local time data. A controller initiates the local clock with the GPS time data. It continuously monitors the GPS time data by calculating any difference error between current GPS time data and local time data, and determining whether the error exceeds a threshold value. If the error does not exceed the threshold value, the GPS time data is used to discipline the local clock data and the disciplined output is used for the time stamp. If the error exceeds the threshold value, the local time data is used for the time stamp.
    Type: Grant
    Filed: January 31, 2015
    Date of Patent: June 4, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Gerardo Trevino, Ben A. Abbott
  • Patent number: 10277520
    Abstract: A packet transfer buffer for use in a computer system having multiple source and destination interfaces, as well as packet handling software. The buffer has a source packet FIFO and destination packet FIFO, each with an associated packet length counter. The packet handling software obtains packet lengths from the source packet counter, and provides the packet length to the destination packet counter. The buffer has hardware circuitry that handles transfer of data from the source packet FIFO to the destination packet FIFO without the need for word-by-word reads and writes by the packet handling software.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: April 30, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventor: Mark A. Johnson
  • Patent number: 10266774
    Abstract: There is provided a process and systems for producing fuels via pyrolysis of carbonaceous feedstock under pressure and temperature in an efficient manner using a circulating fluidized bed with catalyst(s). The pressure and temperature are selected to provoke supercritical conditions, and pyrolysis, hydropyrolysis, hydrotreating, and optionally reforming treatment of the carbonaceous feedstock is carried out simultaneously in one reactor on a recirculating fluidized bed containing catalysts.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: April 23, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Eloy Flores, III, Monica R. Medrano, Hsiang Y. Lai, Michael P. Hartmann
  • Patent number: 10267224
    Abstract: A set of mechanisms, for use with an internal combustion test engine, for testing cylinder offset during operation of the engine. The test engine specifics may vary, but it is assumed to have a crankcase base that supports a cylinder barrel and cylinder head. During engine operation, a transit plate is secured to the top surface of the crankshaft base, and a pair of wedge plates is secured between the transit plate and the bottom of the cylinder barrel. When the engine is not in operation, the transit plate can be slid in a direction normal to the crankshaft axis (for cylinder offset adjustment), and the wedge plates can be moved relative to each other (for cylinder height adjustment).
    Type: Grant
    Filed: October 11, 2015
    Date of Patent: April 23, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Riccardo Meldolesi, Roy Granville
  • Patent number: 10267603
    Abstract: One embodiment provides an apparatus. The apparatus includes a substrate body that includes a top end, an opposing bottom end and a curved outer surface positioned there between, and a clear sight bore aperture centered at a longitudinal axis of the substrate body. The apparatus further includes a trunk line aperture defined in the outer surface of the substrate body. The trunk line aperture has a first end positioned at a top end of the substrate body, off-center from the longitudinal axis. The first end of the trunk line aperture is configured to couple to a detonator. The apparatus further includes a plurality of helical track apertures defined in the outer surface of the substrate body. A respective first end of each helical track aperture is coupled to the trunk line aperture. The apparatus further includes a plurality of termination apertures defined in the outer surface of the substrate body adjacent the bottom end of the substrate body.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: April 23, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Andrew J. Marshall, Thad C. Smith, Carl E. Weiss, Joseph M. Herring
  • Patent number: 10267196
    Abstract: The present disclosure is directed at treatment of reductant urea solutions with water soluble organometallic catalyst precursors which convert to active catalyst compounds in diesel exhaust gas systems. The active catalysts then promote hydrolysis of isocyanic acid into ammonia and/or decomposition of relatively high molecular weight deposits which deposits may otherwise reduce selective catalytic reduction efficiency.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: April 23, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Ryan C. Hartley, Gordon J. J. Bartley
  • Patent number: 10246347
    Abstract: The present disclosure relates generally to the treatment of water using biochar. More specifically, the treatment of flowback water from drilling operations such as hydraulic fracturing or the treatment of tailing water from tar sands production. Such treatment results in the reduction of various constituents such as metal ions, organic compounds and various metals to provide recycled water suitable for reuse or discharge.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: April 2, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventor: Maoqi Feng
  • Patent number: 10243580
    Abstract: A digital to analog converter (DAC) that provides an output that is iteratively stepped as the DAC increments or decrements from its digital input to analog output. The DAC has configurable registers to store a timer count value, an iteration value, and the input value. A state machine compares the iteration value to current DAC values, and adds or subtracts the iteration value until the final output is reached.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: March 26, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventor: Mark A. Johnson
  • Patent number: 10233809
    Abstract: A method to process exhaust gas expelled from at least one cylinder of a plurality of cylinders of an internal combustion engine, the method comprising providing an internal combustion engine, wherein the engine comprises a steam hydrocarbon reformer including a steam reformation catalyst, treating exhaust gas of the engine containing hydrocarbon and water by reacting the hydrocarbon and water in the presence of the steam reformation catalyst in the steam hydrocarbon reformer to provide treated exhaust gas. The treated exhaust gas includes carbon monoxide gas and hydrogen gas produced from the reaction, and mixing the treated exhaust gas, including the carbon monoxide gas and hydrogen gas produced in the steam hydrocarbon reformer with air to provide the mixture of air and treated exhaust gas introduced into the cylinders of the engine.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: March 19, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventor: Cary A. Henry
  • Patent number: 10236511
    Abstract: Compositions comprising Type I clathrates of silicon (Si46) or carbon (C46) wherein the framework of the cage structure includes nitrogen and carbon or nitrogen and silicon or nitrogen-silicon-carbon atom type composition, with or without guest atoms in their respective cage structures. The clathrate structures are particularly useful for energy storage applications such as battery electrodes.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: March 19, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Kwai S. Chan, Michael A. Miller
  • Patent number: 10235629
    Abstract: A method and system is provided for estimation of sensor data confidence based on statistical analysis of different classifier and feature-set (CF) configurations. A method may include: training a classifier of a CF configuration based on a training set of nominal sensor data values; executing the classifier on the training set to generate a first set of confidence values; collecting statistics on the confidence values; calculating a confidence decision threshold based on the collected statistics; executing the classifier on an evaluation set of nominal and degraded sensor data values, to generate a second set of confidence values; deciding whether the sensor data values of the evaluation set are nominal or degraded based on a comparison of the second set of confidence values to the confidence decision threshold; and calculating a score to evaluate the trained classifier based on a verification of the decisions.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: March 19, 2019
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventors: Stephan J. Lemmer, David R. Chambers