Patents Represented by Attorney Andrew E. Barlay
  • Patent number: 5499873
    Abstract: A system and a process is provided for reducing the dust formation during the transfer of a particulate material on an endless conveyor belt. During transfer of the material on the conveyor belt the material is first sprayed with a wetting agent then by application of a plow the moving material is lifted from the bottom of the belt and is diverted towards the side edges of the belt thus creating additional exposed surfaces. The material is then again sprayed then contacted with baffles to redirect the material from the side edges towards the center of the belt thus creating additional exposed surfaces which are then again sprayed with a wetting agent to substantially eliminate dusting. The plow and baffle combination can also be used for uniformly mixing two or more particulate materials on a moving belt.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: March 19, 1996
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: David C. Cummins, David L. Roussel
  • Patent number: 5422191
    Abstract: An aluminum brazing alloy composite sheet is provided which can be utilized in both the vacuum brazing process and the controlled atmosphere brazing process for the brazing of aluminum parts. The brazing alloy composite sheet consists of an aluminum core alloy of the 3XXX, 5XXX or 6XXX type clad at least on one major surface with a lithium-containing aluminum filler alloy containing from about 0.01% to about 0.30% by weight lithium. The core alloy may contain up to about 2% by weight magnesium and is suitable for producing aluminum alloy heat exchanger assemblies, such as radiators or evaporators.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: June 6, 1995
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventor: David L. Childree
  • Patent number: 5398372
    Abstract: A device and a method are provided for the removal of liquid coolant or lubricant edge beads from the side marginal edges of a moving web, such as metal sheet or strip. The device consists of two or more pairs of manifolds, wherein the individual manifolds of each pair are positioned above and below the main surfaces of the moving web and the manifolds also extend beyond the side edges of the web. The manifolds are arranged at an angle to the side marginal edges of the web and compressed gas is introduced to the manifolds. The introduction of the compressed gas, such as air, through the manifolds provides vertical curtains of compressed gas parts of which impinge on the surfaces of the web and thus create turbulence at the side marginal edge portions where the liquid edge bead is located. Due to the turbulence created at the side marginal edge areas of the moving web effective removal of the liquid edge bead can be accomplished.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: March 21, 1995
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventor: Donald C. Kush
  • Patent number: 5398864
    Abstract: A novel aluminum alloy brazing composition is provided consisting of a core alloy consisting of a core alloy and a cladding on at least one side of the core alloy and wherein the core alloy consists essentially of manganese from about 0.8 to about 1.5%, silicon from about 0.45 to about 0.75%, titanium from about 0.03 to about 0.1%, a combined magnesium, copper and zinc content not in excess of about 0.15%, an iron content not in excess of about 0.3%, the total quantity of other impurities not exceeding about 0.15%, balance aluminum; and wherein the cladding consists of an AA 4XXX series aluminum alloy. The aluminum alloy brazing composition can be employed in the brazing of evaporators such as plate-fin evaporators utilized in the automotive field.
    Type: Grant
    Filed: June 8, 1994
    Date of Patent: March 21, 1995
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: Edgar G. Eichhorn, Arthur C. Scott
  • Patent number: 5356725
    Abstract: A novel aluminum alloy brazing composition is provided consisting of a core alloy consisting of a core alloy and a cladding on at least one side of the core alloy and wherein the core alloy consists essentially of manganese from about 0.8 to about 1.5%, silicon from about 0.45 to about 0.75%, titanium from about 0.03 to about 0.1%, a combined magnesium, copper and zinc content not in excess of about 0.15%, an iron content not in excess of about 0.3%, the total quantity of other impurities not exceeding about 0.15%, balance aluminum; and wherein the cladding consists of an AA 4XXX series aluminum alloy. The aluminum alloy brazing composition can be employed in the brazing of evaporators such as plate-fin evaporators utilized in the automotive field.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: October 18, 1994
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: Edgar G. Eichhorn, Arthur C. Scott
  • Patent number: 5102033
    Abstract: The fillet-forming ability of brazeable aluminum alloy materials, such as brazing sheet or heat exchanger components, for example fins, tubes and headers, is significantly improved by treating the material, prior to brazing, with an aqueous acid solution containing a dilute mixture of HF and HNO.sub.3. The treatment generally takes place for a period of not less than 5 seconds within the temperature range from about 15 to about 98.degree. C.
    Type: Grant
    Filed: April 16, 1991
    Date of Patent: April 7, 1992
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: Ralph A. Woods, Arthur C. Scott, Dennis D. Przybycien
  • Patent number: 5031551
    Abstract: Apparatus and method for sewing a length of fabric into seamed tubing that has a consistently uniform diameter and cross-sectional configuration along substantially its entire length, wherein simplified guide means and steps are employed for controlling the full movement of the length of the fabric forming the tubing to and through a sewing zone.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: July 16, 1991
    Inventor: Donell I. Graham
  • Patent number: 5002908
    Abstract: A resin bonded refractory composition of increased pressability and consequently increased density and strength is made by adding potassium borate to prior art refractory compositions.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: March 26, 1991
    Assignee: National Refractories & Minerals Corporation
    Inventor: Nicholas Cassens, Jr.
  • Patent number: 4868147
    Abstract: A calcined and shaped alumina, exhibiting a stabilized, high pore volume and a low surace area together with high strength, is made from an alumina, such as pseudoboehmite or chi-rho-eta alumina or mixtures of different alumina species. The stabilized product exhibits a total porosity of at least about 0.4 cc/g, a surface area within the range of about 2-20 m.sup.2 /g. The porosity is stabilized by treatment of the alumina, prior to calcination, with a combination of silica and an inorganic fluoride. The stabilized alumina product can be readily utilized as an adsorbent or a catalyst support, particularly in applications where the catalyst is subjected to high temperatures.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: September 19, 1989
    Assignee: LaRoche Chemicals, Inc.
    Inventors: Michael J. Pearson, William A. Belding
  • Patent number: 4861744
    Abstract: A novel catalyst is prepared by codepositing hexavalent chromium oxide and a transition metal compound, preferably titanium trichloride, on alumina, followed by fluorinating the resulting combination. The catalyst is useful in the fluorination of a haloethylene of the formula CX.sub.2 .dbd.CHX (where the X's are chlorine or bromine or a combination of the two) in the vapor phase to form 1,1,1,2-tetrafluoroethane.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: August 29, 1989
    Assignee: LaRoche Chemicals, Inc.
    Inventor: Igor Sobolev
  • Patent number: 4792643
    Abstract: A novel catalyst is prepared by codepositing hexavalent chromium oxide and a transition metal compound, preferably titanium trichloride, on alumina, followed by fluorinating the resulting combination. The catalyst is useful in the fluorination of a haloethylene of the formula CX.sub.2 .dbd.CHX (where the X's are chlorine or bromine or a combination of the two) in the vapor phase to form 1,1,1,2-tetrafluoroethane.
    Type: Grant
    Filed: June 16, 1987
    Date of Patent: December 20, 1988
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventor: Igor Sobolev
  • Patent number: 4761266
    Abstract: Lithium feed to an aluminum-lithium alloy production system is achieved at a highly controlled rate by advancing a plunger at a predetermined volumetric rate into a body of molten lithium retained in a holding vessel to displace the lithium toward an overflow port through which it is fed into a mixing vessel where it is combined with molten aluminum. Control of the aluminum feed rate is achieved by maintaining a constant head height upstream of an orifice. The thus metered streams of molten lithium and aluminum are then combined in a vortex bowl, whose outlet is then fed to a casting station.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: August 2, 1988
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventor: Richard S. Bruski
  • Patent number: 4735815
    Abstract: Used frying oils are regenerated and made suitable for reuse by treating the used oils with a composition consisting of a mixture of activated clay or magnesium silicate with a gel-derived alumina. The treating composition contains from about 15% by weight to about 75% by weight gel-derived alumina, balance activated clay or magnesium silicate. Treatment with the composition significantly reduces the free fatty acid content of the used oil with simultaneous improvement in color and other important properties thus resulting in a purified oil of substantially extended service life.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: April 5, 1988
    Assignee: Harshaw/Filtrol
    Inventors: Dennis R. Taylor, Kevin P. Gallavan
  • Patent number: 4735867
    Abstract: A novel aluminum alloy contains vanadium as an alloying element, at a concentration ranging from about 0.02% to about 0.4% by weight. The vanadium imparts corrosion resistance to the alloy, particularly when the alloy is used as a core alloy in a vacuum brazing sheet. A further improvement in corrosion resistance is achieved by processing the alloy or brazing sheet in such a manner that the final processing step is a cold work to a reduction of about 10% to about 20%.
    Type: Grant
    Filed: December 6, 1985
    Date of Patent: April 5, 1988
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventor: Walter D. Finnegan
  • Patent number: 4722872
    Abstract: A magnetic memory disk substrate which maintains a high degree of surface smoothness together with high yield strength is prepared by cladding a core material with a cladding layer containing a maximum of about 3% magnesium. The core material is aluminum alloyed with one or more elements such as zinc, magnesium, copper and silicon to produce an improved yield strength. The cladding comprises from about 3% to about 10% per side of the thickness of the entire composite and generally contains further alloying elements for enhanced corrosion resistance. Silicon impurities generally amount to less than 0.5%.
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: February 2, 1988
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventor: Edwin J. Westerman
  • Patent number: 4701438
    Abstract: Used frying oils are regenerated and made suitable for reuse by treating the used oils with a composition consisting of a mixture of activated clay or magnesium silicate with a gel-derived alumina. The treating composition contains from about 15% by weight to about 75% by weight gel-derived alumina, balance activated clay or magnesium silicate. Treatment with the composition significantly reduces the free fatty acid content of the used oil with simultaneous improvement in color and other important properties thus resulting in a purified oil of substantially extended service life.
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: October 20, 1987
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventors: Dennis R. Taylor, Kevin P. Gallavan
  • Patent number: 4699674
    Abstract: Corrosion resistance in a brazed aluminum product is improved by subjecting the product to a heat treatment at a temperature of 300.degree. F. to 800.degree. F. for at least about one hour, preferably preceded by cooling the product to a temperaure below the temperature ultimately selected for the treatment, and in any event below about 550.degree. F. The useful life of brazed products such as automotive radiators is increased several times as a result of this treatment.
    Type: Grant
    Filed: March 18, 1986
    Date of Patent: October 13, 1987
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventor: Walter D. Finnegan
  • Patent number: 4699672
    Abstract: Computer memory disk substrates which can be age hardened to a high yield strength after thermal flattening and yet are essentially free of magnesium silicide constituents detrimental to surface smoothness are prepared by replacing a portion of the magnesium usually includes in high amounts as an alloying element with zinc.
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: October 13, 1987
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventor: Edwin J. Westerman
  • Patent number: D343402
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: January 18, 1994
    Inventor: Ronald Scoppettone
  • Patent number: D361136
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: August 8, 1995
    Assignee: Kaiser Aluminum & Chemical Corporation
    Inventor: Raymond D. Parkinson