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713 Matching Results
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Cermets and method for making same
The present invention is directed to a method for making a wide variety of general-purpose cermets and for radioactive waste disposal from ceramic powders prepared from urea-dispersed solutions containing various metal values. The powders are formed into a compact and subjected to a rapid temperature increase in a reducing atmosphere. During this reduction, one or more of the more readily reducible oxides in the compact is reduced to a selected substoichiometric state at a temperature below the eutectic phase for that particular oxide or oxides and then raised to a temperature greater than the eutectic temperature to provide a liquid phase in the compact prior to the reduction of the liquid phase forming oxide to solid metal. This liquid phase forms at a temperature below the melting temperature of the metal and bonds together the remaining particulates in the cermet to form a solid polycrystalline cermet.
Date:
April 1, 1981
Creator:
Aaron, W. S.; Kinser, D. L. & Quinby, T. C.
System:
The UNT Digital Library
Laser barometer
This paper describes an invention of a pressure measuring instrument which uses laser radiation to sense the pressure in an enclosed environment by means of measuring the change in refractive index of a gas - which is pressure dependent.
Date:
April 1, 1998
Creator:
Abercrombie, K.R.; Shiels, D. & Rash, T.
System:
The UNT Digital Library
Process to remove rare earth from IFR electrolyte
The invention is a process for the removal of rare earths from molten chloride electrolyte salts used in the reprocessing of integrated fast reactor fuel (IFR). The process can be used either continuously during normal operation of the electrorefiner or as a batch process. The process consists of first separating the actinide values from the salt before purification by removal of the rare earths. After replacement of the actinides removed in the first step, the now-purified salt electrolyte has the same uranium and plutonium concentration and ratio as when the salt was removed from the electrorefiner.
Date:
January 1, 1992
Creator:
Ackerman, J. P. & Johnson, T. R.
System:
The UNT Digital Library
Plutonium recovery from spent reactor fuel by uranium displacement
This report discusses a process for separating uranium values and transuranic values from fission products containing rare earth values when the values which are contained together in a molten chloride salt electrolyte. A molten chloride salt electrolyte with a first ratio of plutonium chloride to uranium chloride is contacted with both a solid cathode and an anode having values of uranium and fission products including plutonium. A voltage is applied across the anode and cathode electrolytically to transfer uranium and plutonium from the anode to the electrolyte while uranium values in the electrolyte electrolytically deposit as uranium metal on the solid cathode in an amount equal to the uranium and plutonium transferred from the anode causing the electrolyte to have a second ratio of plutonium chloride to uranium chloride. Then the solid cathode with the uranium metal deposited thereon is removed and molten cadmium having uranium dissolved therein is brought into contact with the electrolyte resulting in chemical transfer of plutonium values from the electrolyte to the molten cadmium and transfer of uranium values from the molten cadmium to the electrolyte until the first ratio of plutonium chloride to uranium chloride is re-established.
Date:
January 1, 1991
Creator:
Ackerman, J.P.
System:
The UNT Digital Library
Lifting-Jack.
Patent for an improved lifting jack, which "can be quickly placed beneath the axle of a vehicle and easily removed therefrom" (lines 14-16).
Date:
September 1, 1903
Creator:
Adair, Benjamin Lockett
System:
The Portal to Texas History
Saw-Set
Patent for a saw set. Illustrations included.
Date:
August 1, 1911
Creator:
Adams, Theodore C.
System:
The Portal to Texas History
Car-Coupling.
Patent for a new and useful car coupling, including instructions and illustrations.
Date:
August 1, 1899
Creator:
Adams, William Franklin
System:
The Portal to Texas History
Combined Flour and Meal Bin and Sifter.
Patent for a combined flour and meal bin sifter meant for the kitchen. The amount of flour or meal put into the machine does not matter, and the sifter may be removed when desired. The sifted material is directed into a container, and the end of the chute can be closed when not in use.
Date:
September 1, 1896
Creator:
Alexander, Charles P.
System:
The Portal to Texas History
Collar Attachment
Patent for a collar attachment to be used with fold down collars to provide a means to hold the collar closed, with illustrations.
Date:
May 1, 1917
Creator:
Allen, Joseph H.
System:
The Portal to Texas History
Water Heater
Patent for a water heater. This invention relies on the heat of a smokestack of the oven to heat the water. Illustrations included.
Date:
December 1, 1903
Creator:
Allen, William Bell
System:
The Portal to Texas History
Walking-Cane.
Patent for a walking cane which is made of two intertwined sections of spiral steel wires, which can be painted different colors creating a noticeable object that can be used by sports fans to show support for their team at games,
Date:
February 1, 1910
Creator:
Alverson, Lewis
System:
The Portal to Texas History
Improvement in Ant Traps
Patent for the improvement of Ant traps, including to illustrated and labeled figures.
Date:
April 1, 1873
Creator:
Ames, Theodore G.
System:
The Portal to Texas History
Reading-Stand.
Patent for a simple, durable, and economic reading stand that has two desks, one of which is adjustable so that a person can read while sitting at any angle. The second desk is capable of holding heavy books. Both stands are vertically adjustable. The stand can be constructed to hold a lamp in addition to books.
Date:
August 1, 1893
Creator:
Anderson, Francis John & Irick, William Madison
System:
The Portal to Texas History
Non-refillable bottle.
Patent for "new and useful Improvements in Non-Refillable Bottles" (line 5). "This invention relates to non-refillable bottles, and more particularly to mean sfor admitting air to such bottles, in connection with a valve-stopper for preventing the introduction of liquid into the bottle after the stopper has been placed in position." (lines 9-10)
Date:
January 1, 1901
Creator:
Anderson, Lee
System:
The Portal to Texas History
Washing-Machine.
Patent for a boiler washing machine that uses a stove and a hand-operated pounder attachment. This invention makes these types of washing machines more efficient.
Date:
September 1, 1896
Creator:
Arnold, Isaac Hill
System:
The Portal to Texas History
Double opposite-end tubesheet design for a thermovoltaic energy converter
A method and apparatus are disclosed for the direct conversion of energy by thermovoltaic energy conversion having first and second tubesheets, at least one photon emitter plate secured to and extending from the first tubesheet, at least one cold plate secured to and extending from the second tubesheet, a plurality of thermovoltaic cells disposed along oppositely disposed exterior surfaces of the cold plate, and means cooperating with the tubesheet for maintaining a vacuum between the photon emitter plate and the cold plate.
Date:
December 1, 1997
Creator:
Ashcroft, John M.; Campbell, Brain C. & DePoy, David M.
System:
The UNT Digital Library
Hoeing-Machine.
Patent for dual drive hoeing machine. Machine utilizes a "carriage, support brackets, journaled drive shaft, crank arm and gyrating arm" (p. 3, lines 31-34). The machine produces straight rows and eliminates side draft (p.1, 15-19)
Date:
December 1, 1914
Creator:
Ashely, John F.
System:
The Portal to Texas History
Direct detection of x-rays for protein crystallography
An apparatus and method for directly determining the crystalline structure of a protein crystal. The crystal is irradiated by a finely collimated x-ray beam. The interaction o f the x-ray beam with the crystal produces scattered x-rays. These scattered x-rays are detected by means of a large area, thick CCD which is capable of measuring a significant number of scattered x-rays which impact its surface. The CCD is capable of detecting the position of impact of the scattered x-ray on the surface of the CCD and the quantity of scattered x-rays which impact the same cell or pixel. This data is then processed in real-time and the processed data is outputted to produce an image of the structure of the crystal. If this crystal is a protein the molecular structure of the protein can be determined from the data received.
Date:
December 1, 1997
Creator:
Atac, Muzaffer & McKay, Timothy
System:
The UNT Digital Library
Waterproof Car-Door.
Patent for a freight car door of "strong, durable, and inexpensive construction which will be water and air tight, and which will be practically indestructible in case of a wreck" (lines 17-20) including illustrations.
Date:
January 1, 1918
Creator:
Atkinson, George C.
System:
The Portal to Texas History
Washing-Machine.
Patent for an improvement to washing machines that will be "simple and economical in construction and efficient in use" (lines 13-14).
Date:
September 1, 1885
Creator:
Austin, John Overton
System:
The Portal to Texas History
Improvement in Ditching-Machines.
Patent for an improved ditching machine design that will "easily and rapidly cut or excavate, on the surface of the ground, soil, clay, or soft stone, a ditch or trench of any reasonable width or depth suitable" (lines 33-37) including instructions and illustrations.
Date:
January 1, 1878
Creator:
Austin, Matthew J.
System:
The Portal to Texas History
Wedge assembly for electrical transformer component spacing
This invention is comprised of a wedge assembly that is easily inserted between two surface 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 other 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. In the preferred embodiment, the contacting surfaces of the outer member and the center member are provided with guide elements. The wedge assembly is described for use in separating the secondary windings …
Date:
January 1, 1990
Creator:
Baggett, F.E. & Cage, W.F.
System:
The UNT Digital Library
Sash Lock
Patent for an invention which improves "the construction of sash locks" for "great strength and durability" (lines 11-13) including illustrations.
Date:
July 1, 1902
Creator:
Baker, Howard Allen
System:
The Portal to Texas History
Bell-Ringer.
Patent for a bell ringer for use in locomotives, with instructions and illustrations.
Date:
October 15, 1891
Creator:
Baker, John L.
System:
The Portal to Texas History