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Oil-shale-retorting and combustion system. [DOE patent application]

Description: The present invention is directed to the extraction of energy values from oil shale containing considerable concentrations of calcium carbonate in an efficient manner. The volatiles are separated from the oil shale in a retorting zone of a fluidized bed where the temperature and the concentration of oxygen are maintained at sufficiently low levels so that the volatiles are extracted from the oil shale with minimal combustion of the volatiles and with minimal calcination of the calcium carbonate… more
Date: August 28, 1981
Creator: Pitrolo, Augustine A.; Mei, Joseph S. & Shang, Jerry Y.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Thermoelectric refrigerator having improved temperature-stabilization means

Description: A control system for thermoelectric refrigerators is disclosed. The thermoelectric refrigerator includes at least one thermoelectric element that undergoes a first order change at a predetermined critical temperature. The element functions as a thermoelectric refrigerator element above the critical temperature but discontinuously ceases to function as a thermoelectric refrigerator element below the critical temperature. One example of such an arrangement includes thermoelectric refrigerator ele… more
Date: July 29, 1981
Creator: Falco, Charles M.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Nuclear reactor control apparatus

Description: Nuclear reactor core safety rod release apparatus comprises a control rod having a detent notch in the form of an annular peripheral recess at its upper end, a control rod support tube for raising and lowering the control rod under normal conditions, latches pivotally mounted on the control support tube with free ends thereof normally disposed in the recess in the control rod, and cam means for pivoting the latches out of the recess in the control rod when a scram condition occurs. One embodime… more
Date: August 28, 1981
Creator: Sridhar, B.N.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Minimally refined biomass fuel. [carbohydrate-water-alcohol mixture]

Description: A minimally refined fluid composition, suitable as a fuel mixture and derived from biomass material, is comprised of one or more water-soluble carbohydrates such as sucrose, one or more alcohols having less than four carbons, and water. The carbohydrate provides the fuel source; water-solubilizes the carbohydrate; and the alcohol aids in the combustion of the carbohydrate and reduces the viscosity of the carbohydrate/water solution. Because less energy is required to obtain the carbohydrate fro… more
Date: March 26, 1981
Creator: Pearson, R. K. & Hirschfeld, T. B.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Catalytic-cartridge SO/sub 3/ decomposer

Description: A catalytic cartridge internally heated is utilized as a SO/sub 3/ decomposer for thermochemical hydrogen production. The cartridge has two embodiments, a cross-flow cartridge and an axial flow cartridge. In the cross-flow cartridge, SO/sub 3/ gas is flowed through a chamber and incident normally to a catalyst coated tube extending through the chamber, the catalyst coated tube being internally heated. In the axial-flow cartridge, SO/sub 3/ gas is flowed through the annular space between concent… more
Date: May 22, 1981
Creator: Galloway, Terry R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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High-energy-overcurrent protective device

Description: Electrical loads connected to capitance elements in high voltage direct current systems are protected from damage by capacitance discharge overcurrents by connecting between the capacitance element and the load, a longitudinal inductor comprising a bifilar winding wound about a magnetic core, which forms an incomplete magnetic circuit. A diode is connected across a portion of the bifilar winding which conducts a unidirectional current only. Energy discharged from the capitance element is stored… more
Date: May 18, 1981
Creator: Praeg, W. F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

High-temperature electrically conductive ceramic and method for making same

Description: It is the primary objective or aim of the present invention to provide an electrically conductive composition for the fabrication of susceptors useful for induction melting of uranium and uranium alloys and to also provide such a composition for forming crucibles and other containment vessels utilized to contain uranium at elevated temperatures. This composition does not appear to interact with molten uranium, since there is no significant reaction between the compositional consituents of the s… more
Date: June 19, 1981
Creator: Holcombe, C.E. Jr. & Masters, D.R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Method for determining the hardness of strain hardening articles of tungsten-nickel-iron alloy

Description: The present invention is directed to a rapid nondestructive method for determining the extent of strain hardening in an article of tungsten-nickel-iron alloy. The method comprises saturating the article with a magnetic field from a permanent magnet, measuring the magnetic flux emanating from the article, comparing the measurements of the magnetic flux emanating from the article with measured magnetic fluxes from similarly shaped standards of the alloy with known amounts of strain hardening to d… more
Date: July 29, 1981
Creator: Wallace, S.A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Improved solvent extraction recovery of shale oil. [DOE patent application]

Description: An improved process for solvent extraction of organic matter from shale by two extraction steps in sequence. The extraction steps are: (1) treating a kerogen-containing shale with a solvent system comprising a combination of water and an alcohol at a temperature of about 375 to 425/sup 0/C; and (2) treating the product of (1) with a solvent system comprising a combination of an alcohol and another organic solvent at an elevated temperature, but not above about 425/sup 0/C. The organic matter is… more
Date: July 20, 1981
Creator: McKay, John F. & Chong, Shuang-Ling
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Control of temperature and heat flux in a combustor using coal-derived gas of varying heat content. [Patent application]

Description: The present invention is directed to a fuel-air control system for a combustor in which coal-derived gas of varying heat content is used. To maintain the temperature in the combustor at an essentially constant value the fuel-to-air ratio is adjusted by using a temperature actuated variable pressure regulator in the gas feed line to compensate for the variability of the heat content of the gas. The velocity of the products of combustion is maintained at an essentially constant flow rate by contr… more
Date: June 3, 1981
Creator: Loth, John L.; Nakaishi, Curtis V.; Carpenter, Larry K. & Bird, Jimmie D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

High-temperature electrically conductive ceramic composite and method for making same

Description: The present invention relates to a metal-oxide ceramic composition useful in induction heating applications for treating uranium and uranium alloys. The ceramic composition is electrically conductive at room temperature and is nonreactive with molten uranium. The composition is prepared from a particulate admixture of 20 to 50 vol. % niobium and zirconium oxide which may be stabilized with an addition of a further oxide such as magnesium oxide, calcium oxide, or yttria. The composition is prepa… more
Date: June 9, 1981
Creator: Beck, D.E.; Gooch, J.G.; Holcombe, C.E. Jr. & Masters, D.R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Electrochemical cell and negative electrode therefor. [Li-Al anode]

Description: A secondary electrochemical cell is described with the positive and negative electrodes separated by a molten salt electrolyte with the negative electrode comprising a particulate mixture of lithium-aluminum alloy and electrolyte and an additive selected from graphitized carbon, Raney iron or mixtures thereof. The lithium-aluminum alloy is present in the range of from about 45 to about 80% by volume of the negative electrode, and the electrolyte is present in an amount not less than about 10% b… more
Date: July 29, 1981
Creator: Kaun, T.D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Power recovery system for coal-liquefaction process. [Patent application]

Description: Method and apparatus for minimizing energy required to inject reactant such as coal-oil slurry into a reaction vessel, using high pressure effluent from the latter to displace the reactant from a containment vessel into the reaction vessel with assistance of low pressure pump. Effluent is degassed in the containment vessel, and a heel of the degassed effluent is maintained between incoming effluent and reactant in the containment vessel.
Date: April 24, 1981
Creator: Horton, J. R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Coal gasification vessel. [Patent application]

Description: A vessel system comprises an outer shell of carbon fibers held in a binder, a coolant circulation mechanism and control mechanism and an inner shell comprised of a refractory material and is of light weight and capable of withstanding the extreme temperature and pressure environment of, for example, a coal gasification process. The control mechanism can be computer controlled and can be used to monitor and modulate the coolant which is provided through the circulation mechanism for cooling and … more
Date: March 17, 1981
Creator: Loo, Billy W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Ternary liquid scintillator for optical-fiber applications

Description: A multicomponent liquid scintillator solution for use as a radiation-to-light converter in conjunction with a fiber optic transmission system. The scintillator includes a quantity of 5-amino-9-diethylaminobenz (a) phenoxazonium nitrate (Nile Blue Nitrate) as a solute in a fluor solvent such as benzyl alcohol. The use of PPD as an additional solute is also disclosed. The system is controllable by addition of a suitable quenching agent, such as phenol.
Date: June 1, 1981
Creator: Franks, L. A. & Lutz, S. S.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Method and apparatus for producing cryogenic targets

Description: An improved method and apparatus are given for producing cryogenic inertially driven fusion targets in the fast isothermal freezing (FIF) method. Improved coupling efficiency and greater availability of volume near the target for diagnostic purposes and for fusion driver beam propagation result. Other embodiments include a new electrical switch and a new explosive detonator, all embodiments making use of a purposeful heating by means of optical fibers.
Date: August 28, 1981
Creator: Murphy, James T. & Miller, John R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Gamma-thermometer-based reactor-core liquid-level detector. [PWR]

Description: A system is provided which employs a modified gamma thermometer for determining the liquid coolant level within a nuclear reactor core. The gamma thermometer which normally is employed to monitor local core heat generation rate (reactor power), is modified by thermocouple junctions and leads to obtain an unambiguous indication of the presence or absence of coolant liquid at the gamma thermometer location. A signal processor generates a signal based on the thermometer surface heat transfer coeff… more
Date: June 16, 1981
Creator: Burns, T.J.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Coolant monitoring apparatus for nuclear reactors. [PWR; BWR]

Description: A system for monitoring coolant conditions within a pressurized vessel is described. A length of tubing extends outward from the vessel from an open end containing a first line restriction at the location to be monitored. The flowing fluid is cooled and condensed before passing through a second line restriction. Measurement of pressure drop at the second line restriction gives an indication of fluid condition at the first line restriction. Multiple lengths of tubing with open ends at incrementa… more
Date: August 6, 1981
Creator: Tokarz, R.D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Electrochemical cell having cyclindircal electrode elements

Description: A secondary, high temperature electrochemical cell especially adapted for lithium alloy negative electrodes, transition metal chalcogenide positive electrodes and alkali metal halide or alkaline earth metal halide electrolyte is disclosed. The cell is held within an elongated cylindrical container in which one of the active materials is filled around the outside surfaces of a pluraity of perforate tubular current collectors along the length of the container. Each of the current collector tubes … more
Date: March 5, 1981
Creator: Nelson, P.A. & Shimotake, H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Transistorized power switch and base drive circuit therefore

Description: A high power switching circuit is disclosed which utilizes a four-terminal Darlington transistor block to improve switching speed, particularly in rapid turn-off. Two independent reverse drive currents are utilized during turn-off in order to expel the minority carriers of the Darlington pair at their own charge sweep-out rate. The reverse drive current may be provided by a current transformer, the secondary of which is tapped to the base terminal of the power stage of the Darlington block. In … more
Date: March 24, 1981
Creator: Lee, F.C. & Carter, R.A.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Nuclear reactor fuel-assembly duct-tube-to-handling-socket attachment system. [LMFBR]

Description: A reusable system is described for removably attaching the upper end of a nuclear reactor duct tube to the lower end of a nuclear reactor fuel assembly handling socket. A transition ring, fixed to the duct tube's upper end, has an interior-threaded section with a first locking hole segment. An adaptor ring, fixed to the handling socket's lower end has an outside-threaded section with a second locking hole segment. The inside and outside threaded sections match and can be joined so that the firs… more
Date: March 5, 1981
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

System for utilizing shale oil fines. [Patent application]

Description: A system is provided for utilizing fines of carbonaceous materials such as particles or pieces of oil shale of about one-half inch or less diameter which are rejected for use in some conventional or prior surface retorting process, which obtains maximum utilization of the energy content of the fines and which produces a waste which is relatively inert and of a size to facilitate disposal. The system includes a cyclone retort which pyrolyzes the fines in the presence of heated gaseous combustion… more
Date: March 13, 1981
Creator: Harak, A. E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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