Patents Represented by Attorney Robert Southworth
  • Patent number: 5547583
    Abstract: Metals and organics are extracted from solution by co-precipitating them with a gel comprising aluminum hydroxide and a complexing agent such as EDTA. After the gel is processed to remove the metals and organics, it can be recycled for further use by dissolving it in a high-pH solution, leaving no secondary waste stream. A number of alternative complexing agents perform better than EDTA.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: August 20, 1996
    Inventor: Donald H. Alexander
  • Patent number: 5113423
    Abstract: A method and apparatus for increasing the coherence and reducing the emittance of a beam-shaped pulse operates by splitting the pulse into multiple sub-beams, delaying the propagation of the various sub-beams by varying amounts, and then recombining the sub-beams by means of a rotating optical element to form a pulse of longer duration with improved transverse coherence.
    Type: Grant
    Filed: October 20, 1988
    Date of Patent: May 12, 1992
    Inventor: Paul L. Csonka
  • Patent number: 5032738
    Abstract: A static controlled reactance device is inserted in series with an AC electric power transmission line to adjust its transfer impedance. An inductor (reactor) is serially connected with two back-to-back connected thyristors which control the conduction period and hence the effective reactance of the inductor. Additional reactive elements are provided in parallel with the thyristor controlled reactor to filter harmonics and to obtain required range of variable reactance. Alternatively, the static controlled reactance device discussed above may be connected to the secondary winding of a series transformer having its primary winding connected in series to the transmission line. In a three phase transmission system, the controlled reactance device may be connected in delta configuration on the secondary side of the series transformer to eliminate triplen harmonics.
    Type: Grant
    Filed: January 22, 1986
    Date of Patent: July 16, 1991
    Inventor: John J. Vithayathil
  • Patent number: 4818479
    Abstract: The invention relates to a nuclear reactor spacer grid member for use in a liquid cooled nuclear reactor and to a ductless core component employing a plurality of these spacer grid members. The spacer grid member is of the egg-shell type and is constructed so that the walls of the cell members of the grid member are formed of a single thickness of metal to avoid tolerance problems. Within each cell member is a hydraulic spring which laterally constrains the nuclear material bearing rod which passes through each cell member against a hardstop in response to coolant flow through the cell member. This hydraulic spring is also suitable for use in a water cooled nuclear reactor. A core component constructed of, among other components, a plurality of these spacer grid members, avoids the use of a full length duct by providing spacer sleeves about the sodium tubes passing through the spacer grid members at locations between the grid members, thereby maintaining a predetermined space between adjacent grid members.
    Type: Grant
    Filed: October 4, 1985
    Date of Patent: April 4, 1989
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: David W. Christiansen, Richard A. Karnesky
  • Patent number: 4789517
    Abstract: A heat radiator useful for expelling waste heat from a power generating system aboard a space vehicle is disclosed. Liquid to be cooled is passed to the interior of a rotating bubble membrane radiator, where it is sprayed into the interior of the bubble. Liquid impacting upon the interior surface of the bubble is cooled and the heat radiated from the outer surface of the membrane. Cooled liquid is collected by the action of centrifical force about the equator of the rotating membrane and returned to the power system. Details regarding a complete space power system employing the radiator are given.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: December 6, 1988
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Brent J. Webb, Edmund P. Coomes
  • Patent number: 4737336
    Abstract: A structure for the storage of core assemblies from a liquid metal-cooled nuclear reactor. The structure comprises an enclosed housing having a substantially flat horizontal top plate, a bottom plate and substantially vertical wall members extending therebetween. A plurality of thimble members extend downwardly through the top plate. Each thimble member is closed at its bottom end and has an open end adjacent said top plate. Each thimble member has a length and diameter greater than that of the core assembly to be stored therein. The housing is provided with an inlet duct for the admission of cooling air and an exhaust duct for the discharge of air therefrom, such that when hot core assemblies are placed in the thimbles, the heat generated will by convection cause air to flow from the inlet duct around the thimbles and out the exhaust duct maintaining the core assemblies at a safe temperature without the necessity of auxiliary powered cooling equipment.
    Type: Grant
    Filed: April 4, 1986
    Date of Patent: April 12, 1988
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Charles E. Jones, Jr., Jay E. Brunings
  • Patent number: 4710343
    Abstract: An improved cesium getter 28 is provided in a breeder reactor fuel element or pin in the form of an extended surface area, low density element formed in one embodiment as a helically wound foil 30 located with silicon carbide, and located at the upper end of the fertile material upper blanket 20.
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: December 1, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: David W. Christiansen, Richard A. Karnesky
  • Patent number: 4698759
    Abstract: A quantitative method of geologic structural analysis of digital terrain data is described for implementation on a computer. Assuming selected valley segments are controlled by the underlying geologic structure, topographic lows in the terrain data, defining valley bottoms, are detected, filtered and accumulated into a series line segments defining contiguous valleys. The line segments are then vectorized to produce vector segments, defining valley segments, which may be indicative of the underlying geologic structure. Coplanar analysis is performed on vector segment pairs to determine which vectors produce planes which represent underlying geologic structure. Point data such as fracture phenomena which can be related to fracture planes in 3-dimensional space can be analyzed to define common plane orientation and locations. The vectors, points, and planes are displayed in various formats for interpretation.
    Type: Grant
    Filed: March 28, 1985
    Date of Patent: October 6, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Jay R. Eliason, Valerie L. C. Eliason
  • Patent number: 4676712
    Abstract: A positioning and locking apparatus including a fixture having a rotatable torque ring provided with a plurality of cam segments for automatically guiding a container into a desired location within the fixture. Rotation of the ring turns the container into a final position in pressure sealing relation against a hatch member.
    Type: Grant
    Filed: June 19, 1985
    Date of Patent: June 30, 1987
    Inventors: Milton L. Hayward, William H. Harper
  • Patent number: 4677364
    Abstract: The reactive power of an induction machine is compensated by providing fixed capacitors on each phase line for the minimum compensation required, sensing the current on one line at the time its voltage crosses zero to determine the actual compensation required for each phase, and selecting switched capacitors on each line to provide the balance of the compensation required.
    Type: Grant
    Filed: January 4, 1985
    Date of Patent: June 30, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Timothy J. Williams, Mohamed A. El-Sharkawi, Subrahmanyam S. Venkata
  • Patent number: 4654194
    Abstract: An inlet nozzle assembly for directing coolant into the duct tube of a fuel assembly attached thereto. The nozzle assembly includes a shell for housing separable components including an orifice plate assembly, a neutron shield block, a neutron shield plug, and a diffuser block. The orifice plate assembly includes a plurality of stacked plates of differently configurated and sized openings for directing coolant therethrough in a predesigned flow pattern.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: March 31, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: David W. Christiansen, Richard A. Karnesky, Donald R. Precechtel, Bob G. Smith, Ronald C. Knight
  • Patent number: 4647420
    Abstract: Systems and methods for inspection of nuclear fuel pins to determine fiss loading and uniformity. The system includes infeed mechanisms which stockpile, identify and install nuclear fuel pins into an irradiator. The irradiator provides extended activation times using an approximately cylindrical arrangement of numerous fuel pins. The fuel pins can be arranged in a magazine which is rotated about a longitudinal axis of rotation. A source of activating radiation is positioned equidistant from the fuel pins along the longitudinal axis of rotation. The source of activating radiation is preferably oscillated along the axis to uniformly activate the fuel pins. A detector is provided downstream of the irradiator. The detector uses a plurality of detector elements arranged in an axial array. Each detector element inspects a segment of the fuel pin.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: March 3, 1987
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Richard L. Bramblett, Charles A. Preskitt
  • Patent number: 4645639
    Abstract: A pushrod assembly including a carriage mounted on a shaft for movement therealong and carrying a pushrod engageable with a load to be moved. A magnet is mounted on a supporting bracket for movement along such shaft. Means are provided for adjustably spacing said magnet away from said carriage to obtain a selected magnetic attractive or coupling force therebetween. Movement of the supporting bracket and the magnet carried thereby pulls the carriage along with it until the selected magnetic force is exceeded by a resistance load acting on the carriage.
    Type: Grant
    Filed: March 30, 1984
    Date of Patent: February 24, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Jerry D. Potter
  • Patent number: H209
    Abstract: Disclosed is a discharge assembly for allowing elongate pins to be discharged from an area of relatively low pressure to an area of relatively greater pressure. The discharge assembly includes a duck valve having a lip piece made of flexible material. The flexible lip piece responds to a fluctuating pressure created downstream by an aspirator. The aspirator reduces the downstream pressure sensed by the duck valve when the discharge assembly is in the open position. This allows elongate pins to be moved through the duck valve with no backflow because the aspirator pressure is less than the pressure in the low pressure area from which the pins originate. Closure of the assembly causes the aspirator static pressure to force the flexible duck valve lip piece into a tightly sealed position also preventing backflow. The discharge assembly can be easily controlled using a single control valve which blocks the flow of aspirator gas and closes the pin passageway extending through the assembly.
    Type: Grant
    Filed: May 30, 1984
    Date of Patent: February 3, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: David J. Oakley
  • Patent number: H262
    Abstract: A method of and system for removing silicon from a high temperature liquid sodium coolant system for a nuclear reactor. The sodium is cooled to a temperature below the silicon saturation temperature and retained at such reduced temperature while inducing high turbulence into the sodium flow for promoting precipitation of silicon compounds and ultimate separation of silicon compound particles from the liquid sodium.
    Type: Grant
    Filed: November 25, 1983
    Date of Patent: May 5, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Wayne H. Yunker, David W. Christiansen
  • Patent number: H326
    Abstract: Manganese-iron base and manganese-chromium-iron base austenitic alloys designed to have resistance to neutron irradiation induced swelling and low activation have the following compositions (in weight percent): 20 to 40 Mn; up to about 15 Cr; about 0.4 to about 3.0 Si; an austenite stabilizing element selected from C and N, alone or in combination with each other, and in an amount effective to substantially stabilize the austenite phase, but less than about 0.7 C, and less than about 0.3 N; up to about 2.5 V; up to about 0.1 P; up to about 0.01 B; up to about 3.0 Al; up to about 0.5 Ni; up to about 2.0 W; up to about 1.0 Ti; up to about 1.0 Ta; and with the remainder of the alloy being essentially iron.
    Type: Grant
    Filed: June 23, 1986
    Date of Patent: September 1, 1987
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Howard R. Brager, Francis A. Garner
  • Patent number: H558
    Abstract: Radiation pellets having an outer shell, preferably, of Mo, W or depleted U nd an inner filling of lithium hydride wherein the outer shell material has a greater melting point than does the inner filling material.
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: December 6, 1988
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Edmund P. Coomes, Andrzej T. Luksic
  • Patent number: H617
    Abstract: A pressure resistant seal for a metallic container is formed between a cylindrical portion having one end open and a cap which seals the open end of the shell. The cap is in the form of a frusto-conical flange which is inserted narrow end first into the open end of the shell and the container is sealed by means of a capping tool which pulls the flange against a die, deforming the flange and forcing the edge of the flange into the wall of the shell.
    Type: Grant
    Filed: April 22, 1987
    Date of Patent: April 4, 1989
    Assignee: The United States of America as represented by the United Stats Department of Energy
    Inventor: Nicholas A. Hertelendy
  • Patent number: H689
    Abstract: A fuel pin for a liquid metal nuclear reactor is provided. The fuel pin includes a generally cylindrical cladding member with metallic fuel material disposed therein. At least a portion of the fuel material extends radially outwardly to the inner diameter of the cladding member to promote efficient transfer of heat to the reactor coolant system. The fuel material defines at least one void space therein to facilitate swelling of the fuel material during fission.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: October 3, 1989
    Assignee: The United States of America as reprsented by the United States Department of Energy
    Inventors: David W. Christiansen, Richard A. Karnesky, Robert D. Leggett, Ronald B. Baker
  • Patent number: H715
    Abstract: Mercury can be recovered from nitric acid-containing fluids by reacting the fluid with aluminum metal to produce mercury metal, and then quenching the reactivity of the nitric acid prior to nitration of the mercury metal.
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: December 5, 1989
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Wilbur O. Greenhalgh