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Light gas gun with reduced timing jitter

Description: A gas gun having a prepressurized projectile held in place with a glass rod in compression is described. The glass rod is destroyed with an explosive at a precise time which allows a restraining pin to be moved by pneumatic means and free the projectile.
Date: December 1, 1996
Creator: Laabs, Gary W.; Funk, David J. & Asay, Blaine W.
Partner: UNT Libraries Government Documents Department
open access

A portable tester for determining gas content within a core sample

Description: A portable tester is provided for reading and displaying the pressure of a gas released from a rock core sample stored within a sealed container and for taking a sample of the released pressurized gas for chemical analysis thereof for subsequent use in a modified direct method test which determines the volume of gas and specific type of gas contained within the core sample. The portable tester includes a pair of low and high range electrical pressure transducers for detecting a gas pressure wit… more
Date: December 31, 1996
Creator: Garcia, F. Jr. & Schatzel, S.J.
Partner: UNT Libraries Government Documents Department
open access

Hydrocracking and hydroisomerization of long-chain alkanes and polyolefins over metal-promoted anion-modified transition metal oxides

Description: A method is described for cracking a feedstock by contacting the feedstock with a metal-promoted anion-modified metal oxide catalyst in the presence of hydrogen gas. The metal oxide of the catalyst is one or more of ZrO{sub 2}, HfO{sub 2}, TiO{sub 2} and SnO{sub 2}, and the feedstock is principally chains of at least 20 carbon atoms. The metal-promoted anion-modified metal oxide catalyst contains one or more of Pt, Ni, Pd, Rh, Ir, Ru, (Mn and Fe) or mixtures of them present between about 0.2% t… more
Date: December 1996
Creator: Venkatesh, Koppampatti R.; Hu, Jianli; Tierney, John W. & Wender, Irving
Partner: UNT Libraries Government Documents Department
open access

Remote vacuum compaction of compressible hazardous waste

Description: A system is described for remote vacuum compaction and containment of low-level radioactive or hazardous waste comprising a vacuum source, a sealable first flexible container, and a sealable outer flexible container for receiving one or more first flexible containers. A method for compacting low level radioactive or hazardous waste materials at the point of generation comprising the steps of sealing the waste in a first flexible container, sealing one or more first containers within an outer fl… more
Date: December 31, 1996
Creator: Coyne, M. J.; Fiscus, G. M. & Sammel, A. G.
Partner: UNT Libraries Government Documents Department
open access

Cable load sensing device

Description: Apparatus for sensing the magnitude of a load on a cable as the cable is employed to support the load includes a beam structure clamped to the cable so that a length of the cable lies along the beam structure. A spacer associated with the beam structure forces a slight curvature in a portion of the length of cable under a cable no-load condition so that the portion of the length of cable is spaced from the beam structure to define a cable curved portion. A strain gauge circuit including strain … more
Date: December 31, 1996
Creator: Beus, M. J. & McCoy, W. G.
Partner: UNT Libraries Government Documents Department
open access

Reduction of spalling in mixed metal oxide desulfurization sorbents by addition of a large promoter metal oxide

Description: Mixed metal oxide pellets for removing hydrogen sulfide from fuel gas mixtures derived from coal are stabilized for operation over repeated cycles of desulfurization and regeneration reactions by addition of a large promoter metal oxide such as lanthanum trioxide. The pellets, which may be principally made up of a mixed metal oxide such as zinc titanate, exhibit physical stability and lack of spalling or decrepitation over repeated cycles without loss of reactivity. The lanthanum oxide is mixed… more
Date: December 31, 1996
Creator: Poston, J. A.
Partner: UNT Libraries Government Documents Department
open access

A tube-in-tube thermophotovoltaic generator

Description: A thermophotovoltaic device includes at least one thermal radiator tube, a cooling tube concentrically disposed within each thermal radiator tube and an array of thermophotovoltaic cells disposed on the exterior surface of the cooling tube. A shell having a first end and a second end surrounds the thermal radiator tube. Inner and outer tubesheets, each having an aperture corresponding to each cooling tube, are located at each end of the shell. The thermal radiator tube extends within the shell … more
Date: December 31, 1996
Creator: Ashcroft, J.; Campbell, B. & Depoy, D.
Partner: UNT Libraries Government Documents Department
open access

Porous desulfurization sorbent pellets containing a reactive metal oxide and an inert zirconium compound

Description: Sorbent pellets for removing hydrogen sulfide from coal gas are prepared by combining a reactive oxide, in particular zinc oxide, with a zirconium compound such as an oxide, silicate, or aluminate of zirconium, and an inorganic binder and pelletizing and calcining the mixture. Alternately, the zinc oxide may be replaced by copper oxide or a combination of copper, molybdenum, and manganese oxides. The pellet components may be mixed in dry form, moistened to produce a paste, and converted to pell… more
Date: December 1, 1996
Creator: Gardner, Todd H. & Gasper-Galvin, Lee D.
Partner: UNT Libraries Government Documents Department
open access

Removal of oxides of nitrogen from gases in multi-stage coal combustion

Description: Polluting NO{sub x} gas values are removed from off-gas of a multi-stage coal combustion process which includes an initial carbonizing reaction, firing of char from this reaction in a fluidized bed reactor, and burning of gases from the carbonizing and fluidized bed reactions in a topping combustor having a first, fuel-rich zone and a second, fuel-lean zone. The improvement by means of which NO{sub x} gases are removed is directed to introducing NO{sub x}-free oxidizing gas such as compressor a… more
Date: December 31, 1996
Creator: Mollot, D.J.; Bonk, D.L. & Dowdy, T.E.
Partner: UNT Libraries Government Documents Department
open access

Hybrid high direct current circuit interrupter

Description: A device and a method for interrupting very high direct currents (greater than 100,000 amperes) and simultaneously blocking high voltages (greater than 600 volts). The device utilizes a mechanical switch to carry very high currents continuously with low loss and a silicon controlled rectifier (SCR) to bypass the current around the mechanical switch while its contacts are separating. A commutation circuit, connected in parallel with the SCR, turns off the SCR by utilizing a resonant circuit to d… more
Date: December 31, 1996
Creator: Rockot, Joseph H.; Mikesell, Harvey E. & Jha, Kamal N.
Partner: UNT Libraries Government Documents Department
open access

Remote drill bit loader

Description: A drill bit loader is described for loading a tapered shank of a drill bit into a similarly tapered recess in the end of a drill spindle. The spindle has a transverse slot at the inner end of the recess. The end of the tapered shank of the drill bit has a transverse tang adapted to engage in the slot so that the drill bit will be rotated by the spindle. The loader is in the form of a cylinder adapted to receive the drill bit with the shank projecting out of the outer end of the cylinder. Retain… more
Date: December 31, 1996
Creator: Dokos, J.A.
Partner: UNT Libraries Government Documents Department
open access

Combustor oscillation attenuation via the control of fuel-supply line dynamics

Description: Combustion oscillation control in combustion systems using hydrocarbon fuels is provided by acoustically tuning a fuel-delivery line to a desired phase of the combustion oscillations for providing a pulse of a fuel-rich region at the oscillating flame front at each time when the oscillation produced pressure in the combustion chamber is in a low pressure phase. The additional heat release produced by burning such fuel-rich regions during low combustion chamber pressure effectively attenuates th… more
Date: December 1, 1996
Creator: Richards, George A. & Gemmen, Randall S.
Partner: UNT Libraries Government Documents Department
open access

Assembly and method for testing the integrity of stuffing tubes

Description: A stuffing tube integrity checking assembly includes first and second annular seals, with each seal adapted to be positioned about a stuffing tube penetration component. An annular inflation bladder is provided, the bladder having a slot extending longitudinally there along and including a separator for sealing the slot. A first valve is in fluid communication with the bladder for introducing pressurized fluid to the space defined by the bladder when mounted about the tube. First and second rel… more
Date: December 31, 1996
Creator: Morrison, Edward F.
Partner: UNT Libraries Government Documents Department
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