Patents Represented by Attorney, Agent or Law Firm Douglas E. Stoner
  • Patent number: 6354799
    Abstract: A solid-solution strengthened superalloy weld composition, includes: about 10 to about 15 wt % Co; about 18 to about 22 wt % Cr; about 0.5 to about 1.3 wt % Al; about 3.5 to about 4.5 wt % Ta; about 1 to about 2 wt % Mo; about 13.5 to about 17.0 wt % W, up to about 0.08 wt % C; up to about 0.06 wt % Zr; up to about 0.015 wt % B; about 0.4 to about 1.2 wt % Mn; about 0.1 to about 0.3 wt % Si; and balance Ni.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: March 12, 2002
    Assignee: General Electric Company
    Inventors: Charles Gitahi Mukira, Melvin Robert Jackson, Aaron Todd Frost, Adrian Maurice Beltran
  • Patent number: 6333394
    Abstract: Copolycarbonates containing such structural units as birefringence-reducing or “soft block” units are prepared by conducting a reaction, such as melt polymerization or equilibration, between a precursor polycarbonate and a monomer, polycarbonate oligomer or high molecular weight polycarbonate which is a source of other structural units. The crystallinity of the resulting precursor copolycarbonate or one of the reagents employed in its preparation is enhanced and the precursor copolycarbonate is subjected to solid state polymerization.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: December 25, 2001
    Assignee: General Electric Company
    Inventors: Christian Maria Emile Bailly, Bhaskar Bhairavnath Idage, Swaminathan Sivaram, Nayaku Nivarati Chavan, Rein Mollerus Faber, Shamal Karunakaran Menon, Gautam Chatterjee, Godavarthi Satyana Varadarajan, James Day, Patrick Joseph McCloskey, Joseph Anthony King, Jr., Arun Savalaram Jadhav
  • Patent number: 6331267
    Abstract: A mold for molding a core for use in casting hollow parts includes, a lower mold portion and an upper mold portion defining therein a cavity corresponding to the outer surface of the core. The lower mold portion includes a cutout disposed along a parting line defined between the lower mold portion and the upper mold portion and opening onto the cavity. After introduction of a ceramic slurry mixture into the mold the upper mold portion is removable, to expose a first side of the core and a protective flash formed in the cutout. Desirably, a heat shield is positioned over the protective flash and the exposed portion of the parting line of the lower mold portion so that the lower mold portion is not exposed directly to a flame during a preliminary firing to impart sufficient strength to the ceramic core so that the ceramic core may be handled.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: December 18, 2001
    Assignee: General Electric Company
    Inventors: Martin Kin-Fei Lee, George Gerald Gunn, James Michael Placko
  • Patent number: 6327869
    Abstract: An icemaker dose dispenser includes a housing with a septum therein defining opposite chambers having corresponding water ports. Water is routed alternately through the ports for dispensing water from the chambers in sequence for accurately filling an ice tray.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: December 11, 2001
    Assignee: General Electric Company
    Inventors: Andrew Philip Shapiro, Jerome Johnson Tiemann
  • Patent number: 6318160
    Abstract: A diagnostic technique for testing a power plant system of a locomotive, desirably during routine scheduled maintenance, involves operating the power plant system in a thermally steady state. This is accomplished by operating an engine of the locomotive at a predetermined throttle position, operating radiator fans of a radiator operably connected to the engine at a predetermined speed, operating an alternator operably connected to the engine to apply a substantially constant load to the engine, and obtaining at least one measurement of the power plant system. The technique is readily implemented by a computing environment such as the locomotive's elaborate computer system.
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: November 20, 2001
    Assignee: General Electric Company
    Inventor: Warren Frank Bessler
  • Patent number: 6314160
    Abstract: The present invention provides an adaptive fluoroscopic noise reduction (FNR) algorithm utilizing various data acquisition parameters to generate an estimation of the noise statistics and to predict a minimal object contrast associated with the object. The estimation of the noise statistics and the prediction of the object contrast are then utilized to adapt certain variables that are utilized by the FNR algorithm. The estimation of noise statistics and the prediction of object contrast may be adapted on a pixel-by-pixel basis by using a regional mean to obtain an adapted estimation of noise statistics and an adapted prediction of object absolute contrast. The variables of the FNR algorithm are then adapted based on the adapted noise statistics estimation and the adapted prediction of object absolute contrast.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: November 6, 2001
    Assignee: General Electric Company
    Inventors: Paritosh Jayant Dhawale, Thierry Lebihen, Gregory Michael Kautz
  • Patent number: 6310330
    Abstract: An improved system and method for controlling the temperature of a resistance heater in a heating, ventilation and air-conditioning (“HVAC”) system is disclosed. The control circuit and method includes three separate thermostats per heater leg and are designed to trip at three, sequential pre-selected temperatures to address certain issues associated with prior art designs for thermal overload protection. One of the thermostats is of an automatically resettable type wherein the remaining two are of a “one-shot” design and will remain open until there is human intervention.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: October 30, 2001
    Assignee: Transport International Pool, Inc.
    Inventors: Ljubisa Dragoljub Stevanovic, Ahmed Elasser, Thomas Bernard Breen, Wayne William Mihailov, Rollie Richard Herzog
  • Patent number: 6309441
    Abstract: Rare earth alloy compositions, such as the neodymium iron boron (NdFeB) alloy are made by a Reduction-Melting process. The Reduction-Melting process comprises preparing a primary electrode containing at least one compound or metal to be reduced to form a refined metal or metal alloy ingot; placing the electrode in an electroslag refining furnace; passing a current through the electrode into a molten flux or slag to melt the electrode; reducing the metal or compound in the slag while forming an oxide by-product; collecting melted metal or metal alloy droplets falling through the slag; forming an ingot of the metal or metal alloy from the melted droplets; and collecting the solid oxide byproducts in the slag.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: October 30, 2001
    Assignee: General Electric Company
    Inventors: Mark Gilbert Benz, Robert John Zabala, Vladimir Nikolayevich Radchenko, Anatoly Danilovich Riabtsev, Oleg Vladimirovich Tarlov
  • Patent number: 6307004
    Abstract: In an exemplary embodiment, the method includes the steps of providing an array of reaction vessels and providing a plurality of homogenous reaction mixtures within the reaction vessels. Each mixture comprises monomers at least partially embodied in a liquid and is provided in an amount sufficient to form a film having a thickness sufficient to allow the reaction rate of the polymerization reaction to be essentially independent of mass transport. Polymerization then takes place in the presence of a catalyst at reaction conditions effective in substantially maintaining the homogeneity of the reaction mixture. In this manner, polymerization can take place quickly and efficiently without stirring the reactants. The method is highly useful for testing reactants, catalysts, and associated reaction parameters.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: October 23, 2001
    Assignee: General Electric Company
    Inventors: James Claude Carnahan, John Patrick Lemmon, Radislav Alexandrovich Potyrailo, Terry Kay Leib, Gregory Lee Warner
  • Patent number: 6306517
    Abstract: An article having a spallation resistant TBC comprises a metal substrate, such as a high temperature superalloy, and a TBC, such as a coating of yttria stabilized zirconia. The TBC comprises a plurality of plasma-sprayed layers. The TBC has a coherent, continuous columnar grain microstructure, wherein at least one layer has a plurality of continuous columnar grains which have been extended by directional solidification into an adjacent layer.
    Type: Grant
    Filed: August 3, 2000
    Date of Patent: October 23, 2001
    Assignee: General Electric Company
    Inventors: Dennis Michael Gray, Yuk-Chiu Lau, Curtis Alan Johnson, Marcus Preston Borom, Warren Arthur Nelson
  • Patent number: 6306092
    Abstract: The axis of rotational transducer array scans, because of imperfect transducer array assembly, may have two orthogonal offsets relative to the geometric center of the transducer array. Without knowledge of these offsets, it is not possible to convert rotational transducer scan data into a rectilinear (Euclidean) coordinate system, as is necessary for three-dimensional processing. Using spatial coherency between appropriate scan lines in different rotational transducer scans, the horizontal and vertical rotational offsets are calculated. These offsets are then utilized in converting the data to a rectilinear coordinate system for three-dimensional processing.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: October 23, 2001
    Assignee: General Electric Company
    Inventors: Boris Yamrom, William Thomas Hatfield, Joseph Edward Piel, Jr., Ricardo Scott Avila
  • Patent number: 6302646
    Abstract: A rotary machine has a rotor and a surrounding stator. The rotor has an outer surface with an upstream larger-radius first section, a downstream smaller-radius second section, and an intervening third section which has an area facing in a direction other than perpendicular or parallel to the axis of the rotor. In one example, the area includes a first convex area and a second concave area. The machine also has a first brush seal with bristles whose free ends are positioned near the second section, and the machine may also include a second brush seal with bristles whose free ends are positioned near the first section and with a front plate having a ledge projecting away from its corresponding bristles.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: October 16, 2001
    Assignee: General Electric Company
    Inventors: Osman Saim Dinc, Robert Joseph Albers, Yahya Dogu, Ming Zhou
  • Patent number: 6301899
    Abstract: A mixer for a combustor includes a swirler having a plurality of vanes disposed at an upstream end of a mixing duct. A centerbody extends downstream from the vanes and includes a fuel chamber integrally joined to the vanes. Fuel injection openings extend from the chamber into passages between the vanes.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: October 16, 2001
    Assignee: General Electric Company
    Inventors: Anthony John Dean, Steven George Goebel
  • Patent number: 6302318
    Abstract: A method for applying a wear coating on a surface of a substrate is described. A foil of the wear coating is first attached to the substrate surface, and then fused to the surface, e.g., by brazing. The wear coating may be formed from a carbide-type material. The substrate is very often a superalloy material, e.g., a component of a turbine engine. A method for repairing a worn or damaged wear coating applied over a substrate is also described, along with related articles of manufacture.
    Type: Grant
    Filed: June 29, 1999
    Date of Patent: October 16, 2001
    Assignee: General Electric Company
    Inventors: Wayne Charles Hasz, Anthony Mark Thompson, Marcus Preston Borom
  • Patent number: 6304996
    Abstract: A high-speed turbo decoder utilizes a MAP decoding algorithm and includes a streamlined construction of functional units, or blocks, amenable to ASIC implementation. A gamma block provides symbol-by-symbol a posteriori state transition probability estimates. Two gamma probability function values are provided via selection switches to the alpha and beta blocks for calculating the alpha and beta probability function values, i.e., performing the alpha and beta recursions, respectively, in parallel, thus significantly increasing decoding speed. A scaling circuit monitors the values of the alpha and beta probability functions and prescribes a scale factor such that all such values at a trellis level remain within the precision limits of the system. A sigma block determines the a posteriori state transition probabilities (sigma values) and uses the sigma values to provide soft-decision outputs of the turbo decoder.
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: October 16, 2001
    Assignee: General Electric Company
    Inventors: Nick Andrew Van Stralen, John Anderson Fergus Ross, Stephen Michael Hladik, Abdallah Mahmoud Itani, Robert Gideon Wodnicki
  • Patent number: 6302185
    Abstract: A casting includes a heat transfer surface having a plurality of cavities. The plurality of cavities include a density of at least about 25 cavities per square centimeter to about 1,100 cavities per square centimeter resulting in increased surface area and therefore enhanced heat transfer capability. A mold for forming a pattern for molding the casting includes a surface defining a portion of a chamber to which are attached a plurality of particles having an average particle size in a range of about 300 microns to about 2,000 microns.
    Type: Grant
    Filed: January 10, 2000
    Date of Patent: October 16, 2001
    Assignee: General Electric Company
    Inventors: Ching Pang Lee, Wayne Charles Hasz, Nesim Abuaf, Robert Alan Johnson
  • Patent number: 6302649
    Abstract: A solid-solution strengthened superalloy weld composition, includes: about 0 to about 10 wt % Co; about 18 to about 22 wt % Cr; about 0.2 to about 0.7 wt % Al; about 15 to about 28 wt % of the sum of refractory elements; up to about 0.09 wt % C; up to about 0.06 wt % Zr; up to about 0.015 wt % B; about 0.4 to about 1.2 wt % Mn; about 0.2 to about 0.45 wt % Si; and balance Ni.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: October 16, 2001
    Assignee: General Electric Company
    Inventors: Charles Gitahi Mukira, Melvin Robert Jackson, Aaron Todd Frost, Adrian Maurice Beltran
  • Patent number: 6299681
    Abstract: A polycrystalline article is converted to a single crystal in a solid-state process. Heat is applied at a first end of the article to effect a predetermined spatial temperature profile thereat having a maximum temperature approaching a melting temperature thereof. The temperature profile is maintained to initiate conversion at the first end. The heat is moved along the article toward an opposite second end to correspondingly propagate the conversion along the article.
    Type: Grant
    Filed: November 27, 1998
    Date of Patent: October 9, 2001
    Assignee: General Electric Company
    Inventors: Farzin Homayoun Azad, Marshall Gordon Jones
  • Patent number: 6299988
    Abstract: An article comprises a silicon-containing substrate and an external environmental/thermal barrier coating. The external environmental/thermal barrier coating is permeable to diffusion of an environmental oxidant and the silicon-containing substrate is oxidizable by reaction with oxidant to form at least one gaseous product. The article comprises an intermediate layer/coating between the silicon-containing substrate and the environmental/thermal barrier coating that is oxidizable to a nongaseous product by reaction with the oxidant in preference to reaction of the silicon-containing substrate with the oxidant. A method of forming an article, comprises forming a silicon-based substrate that is oxidizable by reaction with oxidant to at least one gaseous product and applying an intermediate layer/coating onto the substrate, wherein the intermediate layer/coating is oxidizable to a nongaseous product by reaction with the oxidant in preference to reaction of the silicon-containing substrate with the oxidant.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: October 9, 2001
    Assignee: General Electric Company
    Inventors: Hongyu Wang, Krishan Lal Luthra
  • Patent number: 6301516
    Abstract: A method of generating quality matrices indicating a relationship between critical to quality characteristics and key control parameters for levels of a process. A plurality of rows of a first matrix are designated as critical to quality characteristics and a plurality of columns of the first matrix are designated as key control parameters. Each critical to quality characteristic is assigned a critical to quality weight. An interaction weight is assigned between at least one critical to quality characteristic and at least one key control parameter. A score is then generated for at least one key control parameter in response to said critical to quality weight and said interaction weight.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: October 9, 2001
    Assignee: General Electric Company
    Inventors: Michael Charles Ostrowski, Mohamed Ahmed Ali, Philip Paul Beachamp, Bijan Dorri, Arlie Russell Martin, Brian Douglas Lounsberry, Michael Solomon Idelchick