Patents Represented by Attorney Stephen D. Hamel
  • Patent number: 5011604
    Abstract: A method and system for removing pollutants dissolved in the aqueous discharge of a plant, such as a power plant, from a body of water having known hydraulogy and physicochemical characteristics, the method comprising (a) modifying the hydraulic system of the body of water including use of physical barriers to define a zone in a portion of the body of water which zone includes the discharge point and where the water has a range of physicochemical characteristics; (b) selecting a large and preferably filamentous, planktonically growing strain of algae adapted to absorb the particular pollutants and genetically dominating algae at the physicochemical characteristics of the zone; (c) establishing a colony of the selected algal strain in the zone; (d) harvesting a portion of the colony; and (e) reinnoculating the zone near the discharge point with a fraction of the harvested portion. The fraction used for reinnoculation can be adjusted to balance the rate of pollutant removal to the rate of pollutant discharge.
    Type: Grant
    Filed: February 7, 1990
    Date of Patent: April 30, 1991
    Inventors: Edward W. Wilde, John R. Benemann, Joseph C. Weissman, David M. Tillett
  • Patent number: 5010045
    Abstract: Borazine derivatives used as low-loss binders and precursors for making ceramic boron nitride structures. The derivative forms the same composition as the boron nitride starting material, thereby filling the voids with the same boron nitride material upon forming and hot pressing. The derivatives have a further advantage of being low in carbon thus resulting in less volatile byproduct that can result in bubble formation during pressing.
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: April 23, 1991
    Assignee: The United States of America as Represented by the United States Department of Energy
    Inventor: Leon Maya
  • Patent number: 5008005
    Abstract: A process and apparatus for the production of coke, asphalt and jet fuel m a feed of fossil fuels containing volatile carbon compounds therein is disclosed. The process includes the steps of pyrolyzing the feed in an entrained bed pyrolyzing means, separating the volatile pyrolysis products from the solid pyrolysis products removing at least one coke from the solid pyrolysis products, fractionating the volatile pyrolysis products to produce an overhead stream and a bottom stream which is useful as asphalt for road pavement, condensing the overhead stream to produce a condensed liquid fraction and a noncondensable, gaseous fraction, and removing water from the condensed liquid fraction to produce a jet fuel-containing product. The disclosed apparatus is useful for practicing the foregoing process. the process provides a useful method of mass producing and jet fuels from materials such as coal, oil shale and tar sands.
    Type: Grant
    Filed: October 17, 1989
    Date of Patent: April 16, 1991
    Assignee: The United States of America as represented by the Department of Energy
    Inventor: Jer Y. Shang
  • Patent number: 5006306
    Abstract: Alloys such as U-6Nb are prepared by forming a stacked sandwich array of uraniun sheets and niobium powder disposed in layers between the sheets, heating the array in a vacuum induction melting furnace to a temperature such as to melt the uranium, holding the resulting mixture at a temperature above the melting point of uranium until the niobium dissolves in the uranium, and casting the uranium-niobium solution. Compositional uniformity in the alloy product is enabled by use of the sandwich structure of uranium sheets and niobium powder.
    Type: Grant
    Filed: September 6, 1990
    Date of Patent: April 9, 1991
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Cressie E. Holcombe, Walter G. Northcutt, Jr., David R. Masters, Lloyd R. Chapman
  • Patent number: 4996457
    Abstract: An ultra-high speed, axial gap alternator that can provide an output to a plurality of loads, the alternator providing magnetic isolation such that operating conditions in one load will not affect operating conditions of another load. This improved alternator uses a rotor member disposed between a pair of stator members, with magnets disposed in each of the rotor member surfaces facing the stator members. The magnets in one surface of the rotor member, which alternate in polarity, are isolated from the magnets in the other surface of the rotor member by a disk of magnetic material disposed between the two sets of magents. In the preferred embodiment, this disk of magnetic material is laminated between two layers of non-magnetic material that support the magnets, and the magnetic material has a peripheral rim that extends to both surfaces of the rotor member to enhance the structural integrity.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: February 26, 1991
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Robert A. Hawsey, J. Milton Bailey
  • Patent number: 4995985
    Abstract: The invention is a gel bead comprising propylene glycol alginate and bone gelatin and is capable of removing metals such as Sr and Cs from solution without adding other adsorbents. The invention could have application to the nuclear industry's waste removal activities.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: February 26, 1991
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Charles D. Scott, Charlene A. Woodward, Charles H. Byers
  • Patent number: 4996403
    Abstract: An acoustic emission based feedback system for controlling the boiling level of a liquid medium in a microwave oven is provided. The acoustic emissions from the medium correlated with surface boiling is used to generate a feedback control signal proportional to the level of boiling of the medium. This signal is applied to a power controller to automatically and continuoulsly vary the power applied to the oven to control the boiling at a selected level.
    Type: Grant
    Filed: February 5, 1990
    Date of Patent: February 26, 1991
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Terry L. White
  • Patent number: 4996483
    Abstract: An optical calibration apparatus is provided for calibrating and reproducing spinning angles in cross-polarization, nuclear magnetic resonance spectroscopy. An illuminated magnifying apparatus enables optical setting an accurate reproducing of spinning "magic angles" in cross-polarization, nuclear magnetic resonance spectroscopy experiments. A reference mark scribed on an edge of a spinning angle test sample holder is illuminated by a light source and viewed through a magnifying scope. When the "magic angle" of a sample material used as a standard is attained by varying the angular position of the sample holder, the coordinate position of the reference mark relative to a graduation or graduations on a reticle in the magnifying scope is noted. Thereafter, the spinning "magic angle" of a test material having similar nuclear properties to the standard is attained by returning the sample holder back to the originally noted coordinate position.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: February 26, 1991
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Stephen K. Beer, Harold R. Pratt, II
  • Patent number: 4979397
    Abstract: A rotating torque sensor apparatus and method for measuring small torques comprising a shaft, a platform having a circuit board and a first moment arm attached to the shaft, a rotatable wheel coaxial with the shaft and having a second moment arm spaced apart from the first moment arm with a load cell therebetween for generating an electric signal as the torque is applied to the shaft and transferred through the moment arms to the load cell. The electrical signal is conducted from the load cell to the circuit board for filtering and amplification before being extracted from the torque assembly through a slip ring.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: December 25, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: James W. Kronberg
  • Patent number: 4976549
    Abstract: A high-pressure microdilatometer is provided for measuring the sintering and fusion properties of various coal ashes under the influence of elevated pressures and temperatures in various atmospheres. Electrical resistivity measurements across a sample of coal ash provide a measurement of the onset of the sintering and fusion of the ash particulates while the contraction of the sample during sintering is measured with a linear variable displacement transducer for detecting the initiation of sintering. These measurements of sintering in coal ash at different pressures provide a mechanism by which deleterious problems due to the sintering and fusion of ash in various combustion systems can be minimized or obviated.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: December 11, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: M. Rashid Khan
  • Patent number: 4976940
    Abstract: A method of producing hydrogen by an endothermic steam-carbon reaction using a rotating drum reactor and a pulse jet combustor. The pulse jet combustor uses coal dust as a fuel to provide reaction temperatures of 1300.degree. to 1400.degree. F. Low-rank coal, water, limestone and catalyst are fed into the drum reactor where they are heated, tumbled and reacted. Part of the reaction product from the rotating drum reactor is hydrogen which can be utilized in suitable devices.
    Type: Grant
    Filed: August 2, 1989
    Date of Patent: December 11, 1990
    Assignee: The United States of America as represented by the Department of Energy
    Inventor: Leland E. Paulson
  • Patent number: 4975027
    Abstract: A transfer pump for samples of fluids at very low or very high pressures comprising a cylinder having a piston sealed with an O-ring, the piston defining forward and back chambers, an inlet and exit port and valve arrangement for the fluid to enter and leave the forward chamber, and a port and valve arrangement in the back chamber for adjusting the pressure across the piston so that the pressure differential across the piston is essentially zero and approximately equal to the pressure of the fluid so that the O-ring seals against leakage of the fluid and the piston can be easily moved, regardless of the pressure of the fluid. The piston may be actuated by a means external to the cylinder with a piston rod extending through a hole in the cylinder sealed with a bellows attached to the piston head and the interior of the back chamber.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: December 4, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Justin E. Halverson, Wilfred W. Bowman
  • Patent number: 4970434
    Abstract: This disclosure identifies dielectric liquids for use as opening and closing switching media in pulsed power technology, and describes a dielectric-liquid-pulsed-power switch empolying flashlamps.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: November 13, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Loucas G. Christophorou, Homer Faidas
  • Patent number: 4969943
    Abstract: A process for making a porous ceramic composite where fumed silica particles are coated with a nitrate, preferably aluminum nitrate. Next the nitrate is converted to an oxide and formed into a desired configuration. This configuration is heated to convert the oxide to an oxide silicate which is then react with HF, resulting in the fluoride ceramic, preferably aluminum fluoride.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: November 13, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Robert H. Reiner, Cressie E. Holcombe
  • Patent number: 4968482
    Abstract: A uranium alloy having small additions of Ti and Nb shows improved strength and ductility in cross section of greater than one inch over prior uranium alloy having only Ti as an alloying element.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: November 6, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Gail M. Ludtka, Gerard M. Ludtka
  • Patent number: 4963755
    Abstract: Refractory oxide crystals suitable for use in tunable lasers and a method for preparing the same are provided. The crystals are characterized by high quantum efficiency, high thermal stability, good crystal transparency, and a high percentage of useful luminescence. The method for preparation of the crystals involves removing substantially all the hydrogen, thermochemically reducing the crystal's oxygen content to produce oxygen (anion) vacancy defects, and subsequently irradiating the crystal with electrons to inactivate trace H.sup.- ions so that an increased amount of short lived F.sup.+ luminescence is produced when the crystal is optically excited.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: October 16, 1990
    Assignee: The United States of America as represented by the Department of Energy
    Inventor: Yok Chen
  • Patent number: H834
    Abstract: A process for converting uranium oxide to uranium metal wherein uranium oxide is reduced with a reducing agent, and the uranium metal product is recovered by dissolving the excess reducing agent and by-products in a dissolution aid.
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: November 6, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Christopher P. Boring
  • Patent number: H845
    Abstract: Vanadium alloys and their fabrication to produce materials for fusion applications having small additions of Ti, C and Zr that improve resistance to helium embrittlement.
    Type: Grant
    Filed: May 16, 1990
    Date of Patent: November 6, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: David N. Braski, Philip J. Maziasz
  • Patent number: H857
    Abstract: An electrolytic process for making uranium from uranium oxide using Cl.sub.2 anode product from an electrolytic cell to react with UO.sub.2 to form uranium chlorides. The chlorides are used in low concentrations in a melt comprising fluorides and chlorides of potassium, sodium and barium in the electrolytic cell. The electrolysis produces Cl.sub.2 at the anode that reacts with UO.sub.2 in the feed reactor to form soluble UCl.sub.4, available for a continuous process in the electrolytic cell, rather than having insoluble UO.sub.2 fouling the cell.
    Type: Grant
    Filed: July 26, 1990
    Date of Patent: December 4, 1990
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Paul A. Haas
  • Patent number: H906
    Abstract: A wedge assembly that is easily inserted between two surfaces to be supported thereby, and thereafter expanded to produce a selected spacing between those surfaces. This wedge assembly has two outer members that are substantially identical except that they are mirror images of each other. Oppositely directed faces of these of these outer members are substantially parallel for the purpose of contacting the surfaces to be separated. The outer faces of these outer members that are directed toward each other are tapered so as to contact a center member having complementary tapers on both faces. A washer member is provided to contact a common end of the outer members, and a bolt member penetrates this washer and is threadably received in a receptor of the center member. As the bolt member is threaded into the center member, the center member is drawn further into the gap between the outer members and thereby separates these outer members to contact the surfaces to be separated.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: April 2, 1991
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Franklin E. Baggett, W. Franklin Cage