Patents Represented by Attorney Robert J. Fisher
  • Patent number: 5275112
    Abstract: A propulsion and stabilization system comprising a series of FIG. 8 coils mounted vertically on the walls of the guideway to provide suspension, lateral guidance and propulsion of a magnetically levitated vehicle. This system further allows for altering the magnetic field effects by changing the relative position of the loops comprising the FIG. 8 coils either longitudinally and/or vertically with resulting changes in the propulsion, the vertical stability, and the suspension.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: January 4, 1994
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Donald M. Rote, Jianliang He, Larry R. Johnson
  • Patent number: 5260640
    Abstract: A method and system for converting the chemical energy of methane to electrical energy. Methane is thermally decomposed to hydrogen and carbon in a decomposing unit at a temperature not less than about 1200.degree. K. and at a pressure at least slightly above atmospheric pressure. Carbon and substantially pure oxygen and a cesium or potassium seed material is transmitted to a combustor which is maintained at a pressure of at least about 50 atmospheres to combust the carbon and oxygen and provide an ionized plasma having a temperature not less than about 2800.degree. K. The ionized plasma is accelerated to a velocity not less than about 1000 m/sec and transported through an MHD generator having a magnetic field in the range of from about 4 to about 6 Tesla to generate dc power.
    Type: Grant
    Filed: December 8, 1992
    Date of Patent: November 9, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Ralph A. Carabetta, Gary E. Staats, John C. Cutting
  • Patent number: 5254934
    Abstract: A method and system for converting the chemical energy of methane to electrical energy. Methane is thermally decomposed to hydrogen and carbon in a decomposing unit at a temperature not less than 1200.degree. K. and at a pressure above atmospheric pressure. Carbon and substantially pure oxygen and a cesium or potassium seed material is transmitted to a combustor which is maintained at a pressure of at least 50 atmospheres to combust the carbon and oxygen and provide an ionized plasma having a temperature not less than 2900.degree. K. The ionized plasma is accelerated to a velocity not less than 1000 m/sec and transported through an MHD generator having a magnetic field in the range of from 4 to 6 Tesla to generate dc power.
    Type: Grant
    Filed: January 28, 1992
    Date of Patent: October 19, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Ralph A. Carabetta, Gary E. Staats, John C. Cutting
  • Patent number: 5248566
    Abstract: A propulsion system for a vehicle having pairs of front and rear wheels and a fuel tank. An electrically driven motor having an output shaft operatively connected to at least one of said pair of wheels is connected to a fuel cell having a positive electrode and a negative electrode separated by an electrolyte for producing dc power to operate the motor. A partial oxidation reformer is connected both to the fuel tank and to the fuel cell receives hydrogen-containing fuel from the fuel tank and water and air and for partially oxidizing and reforming the fuel with water and air in the presence of an oxidizing catalyst and a reforming catalyst to produce a hydrogen-containing gas. The hydrogen-containing gas is sent from the partial oxidation reformer to the fuel cell negative electrode while air is transported to the fuel cell positive electrode to produce dc power for operating the electric motor.
    Type: Grant
    Filed: November 25, 1991
    Date of Patent: September 28, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Romesh Kumar, Shabbir Ahmed, Michael Krumpelt, Kevin M. Myles
  • Patent number: 5232656
    Abstract: A fast-acting nuclear reactor control device for moving and positioning a fety control rod to desired positions within the core of the reactor between a run position in which the safety control rod is outside the reactor core, and a shutdown position in which the rod is fully inserted in the reactor core. The device employs a hydraulic pump/motor, an electric gear motor, and solenoid valve to drive the safety control rod into the reactor core through the entire stroke of the safety control rod. An overrunning clutch allows the safety control rod to freely travel toward a safe position in the event of a partial drive system failure.
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: August 3, 1993
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Oleg M. Kotlyar, Phillip B. West
  • Patent number: 5232794
    Abstract: An electrolyte that operates at temperatures ranging from 600.degree. C. to 800.degree. C. is provided. The electrolyte conducts charge ionically as well as electronically. The ionic conductors include molecular framework structures having planes or channels large enough to transport oxides or hydrated protons and having net-positive or net-negative charges. Representative molecular framework structures include substituted aluminum phosphates, orthosilicates, silicoaluminates, cordierites, apatites, sodalites, and hollandites.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: August 3, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Michael Krumpelt, Ira D. Bloom, Jose D. Pullockaran, Kevin M. Myles
  • Patent number: 5225788
    Abstract: An apparatus for selecting a single synchrotron pulse from the millions of pulses provided per second from a synchrotron source includes a rotating spindle located in the path of the synchrotron pulses. The spindle has multiple faces of a highly reflective surface, and having a frequency of rotation f. A shutter is spaced from the spindle by a radius r, and has an open position and a closed position. The pulses from the synchrotron are reflected off the spindle to the shutter such that the speed s of the pulses at the shutter is governed by:s=4.times..pi..times.r.times.f.such that a single pulse is selected for transmission through an open position of the shutter.
    Type: Grant
    Filed: September 20, 1991
    Date of Patent: July 6, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: James R. Norris, Jau-Huei Tang, Lin Chen, Marion Thurnauer
  • Patent number: 5225146
    Abstract: An electron injection scheme for controlling transport in a tokamak plasma. Electrons with predominantly perpendicular energy are injected into a ripple field region created by a group of localized poloidal field bending magnets. The trapped electrons then grad-B drift vertically toward the plasma interior until they are detrapped, charging the plasma negative. Calculations indicate that the highly perpendicular velocity electrons can remain stable against kinetic instabilities in the regime of interest for tokamak experiments. The penetration distance can be controlled by controlling the "ripple mirror ratio", the energy of the injected electrons, and their v.sub..perp. /v.sub.51 ratio. In this scheme, the poloidal torque due to the injected radial current is taken by the magnets and not by the plasma. Injection is accomplished by the flat cathode containing an ECH cavity to pump electrons to high v.sub..perp..
    Type: Grant
    Filed: November 8, 1991
    Date of Patent: July 6, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Masayuki Ono, Harold Furth
  • Patent number: 5225051
    Abstract: An electrolytic process and apparatus for reducing calcium oxide in a molten electrolyte of CaCl.sub.2 -CaF.sub.2 with a graphite anode in which particles or other contamination from the anode is restricted by the use of a porous barrier in the form of a basket surrounding the anode which may be removed from the electrolyte to burn the graphite particles, and wherein the calcium oxide feed is introduced to the anode compartment to increase the oxygen ion concentration at the anode.
    Type: Grant
    Filed: September 24, 1991
    Date of Patent: July 6, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Davis S. Poa, R. Dean Pierce, Thomas P. Mulcahey, Gerald K. Johnson
  • Patent number: 5223186
    Abstract: A method of sintering nanocrystalline material is disclosed wherein the nanocrystalline material is microwaved to heat the material to a temperature less than about 70% of the melting point of the nanocrystalline material expressed in degrees K. This method produces sintered nanocrystalline material having a density greater than about 95% of theoretical and an average grain size not more than about 3 times the average grain size of the nanocrystalline material before sintering. Rutile TiO.sub.2 as well as various other ceramics have been prepared. Grain growth of as little as 1.67 times has resulted with densities of about 90% of theoretical.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: June 29, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Jeffrey A. Eastman, Kurt E. Sickafus, Joel D. Katz
  • Patent number: 5214015
    Abstract: A method of preparing a fine particle iron based hydrocracking catalyst and the catalyst prepared thereby. An iron (III) oxide powder and elemental sulfur are reacted with a liquid hydrogen donor having a hydroaromatic structure present in the range of from about 5 to about 50 times the weight of iron (III) oxide at a temperature in the range of from about 180.degree. C. to about 240.degree. C. for a time in the range of from about 0 to about 8 hours. Various specific hydrogen donors are disclosed. The catalysts are active at low temperature (<350.degree. C.) and low pressure.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: May 25, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Malvina Farcasiu, Patricia A. Eldredge, Edward P. Ladner
  • Patent number: 5213911
    Abstract: A solid-oxide electrolyte operable at between 600.degree. C. and 800.degree. C. and a method of producing the solid-oxide electrolyte are provided. The solid-oxide electrolyte comprises a combination of a compound having weak metal-oxygen interactions with a compound having stronger metal-oxygen interactions whereby the resulting combination has both strong and weak metal-oxygen interaction properties.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: May 25, 1993
    Assignee: The United States of America as represented by The United States Department of Energy
    Inventors: Ira D. Bloom, Mark C. Hash, Michael Krumpelt
  • Patent number: 5200054
    Abstract: This invention relates to a method and apparatus for removing heavy metals from waste water, soils, or process streams by electrolytic cell means. The method includes cooling a cell cathode to form an ice layer over the cathode and then applying an electric current to deposit a layer of the heavy metal over the ice. The metal is then easily removed after melting the ice. In a second embodiment, the same ice-covered electrode can be employed to form powdered metals.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: April 6, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: David F. Glenn, Dan F. Suciu, Taryl L. Harris, Jani C. Ingram
  • Patent number: 5200144
    Abstract: An apparatus for electrically simulating a nuclear reactor fuel assembly. It includes a heater assembly having a top end and a bottom end and a plurality of concentric heater tubes having electrical circuitry connected to a power source, and radially spaced from each other. An outer target tube and an inner target tube is concentric with the heater tubes and with each other, and the outer target tube surrounds and is radially spaced from the heater tubes. The inner target tube is surrounded by and radially spaced from the heater tubes and outer target tube. The top of the assembly is generally open to allow for the electrical power connection to the heater tubes, and the bottom of the assembly includes means for completing the electrical circuitry in the heater tubes to provide electrical resistance heating to simulate the power profile in a nuclear reactor.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: April 6, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Victor T. Berta
  • Patent number: 5198674
    Abstract: The apparatus of the present invention selects from particles emitted by a radioactive source those particles having momentum within a desired range and focuses the selected particles in a beam having at least one narrow cross-dimension, and at the same time attenuates potentially disruptive gamma rays and low energy particles. Two major components of the present invention are an achromatic bending and focusing system, which includes sector magnets and quadrupole, and a quadrupole doublet final focus system. Permanent magnets utilized in the apparatus are constructed of a ceramic (ferrite) material which is inexpensive and easily machined.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: March 30, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: David G. Underwood
  • Patent number: 5193942
    Abstract: An improved method and device to prevent erosion of slurry transport devices is disclosed which uses liquid injection to prevent contact by the slurry composition with the inner surface of the walls of the transport system. A non-abrasive liquid is injected into the slurry transport system and maintains intimate contact with the entire inner surface of the transport system, thereby creating a fluid barrier between the non-abrasive liquid and the inner surface of the transport system which thereby prevents erosion.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: March 16, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Gregory F. Berry, Robert W. Lyczkowski, Chi-Sheng Wang
  • Patent number: 5194343
    Abstract: A method of fabricating an electrode for use in a metal chloride battery and an electrode are provided. The electrode has relatively larger and more uniform pores than those found in typical electrodes. The fabrication method includes the steps of mixing sodium chloride particles selected from a predetermined size range with metal particles selected from a predetermined size range, and then rigidifying the mixture. The electrode exhibits lower resistivity values of approximately 0.5 .OMEGA.cm.sup.2 than those resistivity values of approximately 1.0-1.5 .OMEGA.cm.sup.2 exhibited by currently available electrodes.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: March 16, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Ira D. Bloom, Paul A. Nelson, Donald R. Vissers
  • Patent number: H1161
    Abstract: An aqueous slurry containing coal and dextrin as a dispersant. The slurry, in addition to containing dextrin, may contain a conventional dispersant or, alternatively, a pH controlling reagent.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: April 6, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Mark H. Berggren, Francis J. Smit, Wilbur W. Swanson
  • Patent number: H1204
    Abstract: An environmentally safe fluid extraction device for use in mobile laboratory and industrial settings comprising a pump, compressor, valving system, waste recovery tank, fluid tank, and a exhaust filtering system.
    Type: Grant
    Filed: April 17, 1992
    Date of Patent: July 6, 1993
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Zenon F. Sungaila
  • Patent number: H1227
    Abstract: The invention is a method for the encapsulation of soluble radioactive waste chloride salts containing radionuclides such as strontium, cesium and hazardous wastes such as barium so that they may be permanently stored without future threat to the environment. The process consists of contacting the salts containing the radionuclides and hazardous wastes with certain zeolites which have been found to ion exchange with the radionuclides and to occlude the chloride salts so that the resulting product is leach resistant.
    Type: Grant
    Filed: August 14, 1991
    Date of Patent: September 7, 1993
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Michele A. Lewis, Terry R. Johnson