Patents Represented by Law Firm Glenn, Lyne, Girard & McDonald
  • Patent number: 4282191
    Abstract: In a process of the preparation of alumina from an alumina value containing material wherein a caustic sodium aluminate process liquor is subjected to a treatment to reduce the level of zinc impurity by the addition of ZnS seed in the presence of sulfide ion, the improvement comprising:(I) forming the zinc sulfide seed a by process comprising the steps of:(A) dissolving ZnO in NaOH to produce a caustic Na.sub.2 ZnO.sub.2 solution; and(B) reacting the solution of (A) with Na.sub.2 S to form ZnS, the Na.sub.2 S being present at a level sufficient to provide a concentration of Na.sub.2 S of at least about 0.150 g/l of Na.sub.2 S when the product of this step is added to the process liquor;(II) adding the product of step (B) to the process liquor to precipitate as ZnS, zinc contained as sodium zincate in the process liquor; and(III) filtering the process liquor to yield an NaAlO.sub.2 liquor containing less than 15 mg/l and preferably below about 10 mg/l zinc as ZnO.
    Type: Grant
    Filed: July 25, 1980
    Date of Patent: August 4, 1981
    Assignee: Reynolds Metals Company
    Inventors: Robert D. Bird, Harry R. Vance
  • Patent number: 4282039
    Abstract: A cold ramming mix suitable for ramming of alumina reduction cell cathode seams at ambient temperature comprising:(A) a solid portion comprising:(I) from about 30 to about 60 weight percent of coarse calcined anthracite;(II) from about 50 to about 30 weight percent of anthracite dust; and(III) from about 1 to about 10 weight percent graphite dust;(B) from about 5 to about 15 weight percent based on the weight of the solid portion of a binder pitch; and(C) from about 5 to about 10 weight percent based on the weight of the solid portion, of a heavy petroleum distillate oil having a 95% distillation range of between about 370.degree. and 540.degree. C.A method for producing such a mix comprising blending A and B to provide a homogeneous mixture and subsequently blending in C under conditions which assure that the pitch binder is not dissolved in the oil of C is also described.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: August 4, 1981
    Assignee: Reynolds Metals Company
    Inventor: Vaughn L. Bullough
  • Patent number: 4279344
    Abstract: A peelable and heat-sealable packaging construction is disclosed. This packaging construction is formed from a pair of members, each member comprising a central structural barrier layer formed of a metallic foil, such as aluminum foil, paperboard or the like, an outer plastics resin covering layer for protection of the central structural barrier layer and an inner sealing layer formed from polypropylene or a polyethylene-polypropylene co-polymer, each blended with between about 15 to 35 percent by weight, and preferably between about 20 to 30 percent by weight, of an ionomer, such as Surlyn.RTM. resin or ethylene methylacrylate. The sealing layers can be heat-sealed to one another to produce a bond which is able to withstand retort sterilization of the sealed packaging construction and which also forms a peelable seal.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: July 21, 1981
    Assignee: Reynolds Metals Company
    Inventor: Fred W. Holloway, Jr.
  • Patent number: 4277594
    Abstract: Described is a mildly biaxially oriented, blown polyethylene film characterized by a cross directional (CD) shrink force in the range of about 60 to 300 psi, an average heat seal energy of at least about 2.0 in - lbs., an average internal tear resistance of at least about 30 gms/ply, and a minimum shrink temperature no higher than 220.degree. F. and which is less than crystalline melt point (or points) of polyethylene material. This film also has a shrink force in the machine direction (MD) which is typically in the range of about 200 to 300 psi.Also described is the process by which this film is produced.
    Type: Grant
    Filed: May 23, 1979
    Date of Patent: July 7, 1981
    Assignee: Reynolds Metals Company
    Inventors: Stephen B. Matthews, Tomas A. Loredo, Walter H. Knox, III, Herman F. Simmons
  • Patent number: 4277446
    Abstract: A process for the removal of iron and titanium minerals from aluminum bearing materials in at least one chlorination stage by the use of an excess of aluminum trichloride as at least the major chlorinating agent for the contained iron and titanium minerals, condensing the excess aluminum trichloride to recover the aluminum trichloride in an impure form, and recycling the impure aluminum trichloride to the chlorination stage together with additional aluminum trichloride or starvation amounts of chlorine, or alternately additional amounts of aluminum trichloride and starvation amounts of chlorine.
    Type: Grant
    Filed: January 25, 1980
    Date of Patent: July 7, 1981
    Assignee: Reynolds Metals Company
    Inventor: David Weston
  • Patent number: 4272029
    Abstract: A process for the upgrading of aluminum mineral bearing raw materials by using at least three beneficiation treatment stages consisting of dispersion of a pulp of the material in specific pH ranges, screening in specific mesh sizes, and using at least one stage of high intensity magnetic separation.
    Type: Grant
    Filed: February 23, 1979
    Date of Patent: June 9, 1981
    Assignee: Reynolds Metals Company
    Inventor: David Weston
  • Patent number: 4271964
    Abstract: A folding carton is disclosed which has particular utility for carrying beverage bottles, such as returnable beer bottles. The carton structure includes a rectangular bottom wall, upstanding front, side and rear walls being positioned perpendicular to the bottom wall, a rectangular top wall of lesser length and width dimensions than the bottom wall and trapezoidal connecting walls extending downwardly from the top wall, with the rear trapezoidal wall being hingedly affixed to the upstanding rear wall, resulting in a carton structure designed to closely confine the bottles. The carton may be end-loaded and top-unloaded, with the front and side trapezoidal walls having opening panels at their juncture with the side and front walls. In a preferred embodiment, the side opening panels act as reinforcing means for openings forming a portion of the side walls and used as carrying handles.
    Type: Grant
    Filed: October 2, 1979
    Date of Patent: June 9, 1981
    Assignee: Reynolds Metals Company
    Inventor: David B. Train
  • Patent number: 4266685
    Abstract: A can body suitable for inward necking of the flange region is disclosed in which the flange region thereof includes a plurality of corrugations to increase the effective thickness and thus the stiffness of the metal in this flange region. A method and apparatus for producing these can bodies are also disclosed. The apparatus employed includes a pair of generally circular matched die members which are positioned on either side of the flange region of the can body to be corrugated and a means for rotating the can body, and thus the die members, when contacting the flange region of the can body.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: May 12, 1981
    Assignee: Reynolds Metals Company
    Inventor: Harry W. Lee, Jr.
  • Patent number: 4263800
    Abstract: A method of forming a nestable and stackable drawn and ironed container is disclosed. The container is designed to permit a plurality of the containers to be stacked within one another to thereby permit transport of empty containers while occupying far less space than previously required for beverage containers.
    Type: Grant
    Filed: March 26, 1979
    Date of Patent: April 28, 1981
    Assignee: Reynolds Metals Company
    Inventors: Horst F. Arfert, Edward D. Gardner, Charles H. Nicklies
  • Patent number: 4262708
    Abstract: A method and apparatus are disclosed for treating flexible pouch-like containers prior to heat sealing of the containers. The method comprises simultaneously injecting superheated steam into a filled container to evacuate air from the container and directing pressurized steam at the inside edge of the container which is to be heat sealed to remove contaminants from this region. Optionally, the method of the present invention may also include a simultaneous directing of steam under pressure to the outside edge of the container in the heat sealing region to enhance the cleaning operation. The apparatus for accomplishing this result comprises a nozzle having a first chamber through which steam may be injected into the container and a second chamber having a plurality of openings through which steam under pressure may be directed against the inside walls of the container from a line supplying the pressurized steam.
    Type: Grant
    Filed: September 14, 1979
    Date of Patent: April 21, 1981
    Assignee: Reynolds Metals Company
    Inventors: Rafael A. de Echeandia, James L. Hutcheson
  • Patent number: 4262058
    Abstract: A curl resistant paper-based label. The label includes a coating on the paper layer of the label of a lecithin compound. This compound provides curl resistance properties to the label, water holdout properties to the label and increases the flexibility of the label. A method involves coating the lecithin compounds onto the paper layer of the these labels.
    Type: Grant
    Filed: March 3, 1980
    Date of Patent: April 14, 1981
    Assignee: Reynolds Metals Company
    Inventor: Mary S. Saunders
  • Patent number: 4261197
    Abstract: A special probe for the ultrasonic inspection of molten aluminum is described.
    Type: Grant
    Filed: September 12, 1979
    Date of Patent: April 14, 1981
    Assignee: Reynolds Metals Company
    Inventor: Thomas L. Mansfield
  • Patent number: 4256714
    Abstract: There is described a process for preparing large crystals of basic aluminum nitrate (BAN) from a nitric acid feed solution containing Al.sub.2 O.sub.3 values comprising the steps of:(1) evaporating water and nitric acid from the solution in a single step evaporation performed at a temperature of between about 270.degree. and about 450.degree. F. and at a pressure of between about atmospheric and about 60 psig to produce an evaporated liquor comprising at least about 16% alumina by weight;(2) holding the evaporated liquor in a quiescent state for a period of between about 20 minutes and about two hours within the temperature range of about 270.degree. F. to about 340.degree. F.;(3) injecting water into the product of step 2, the water being added in an amount sufficient to adjust the composition of the conditioned liquor to a composition expressible as the sum of two components(1) ANN (Al.sub.2 O.sub.3.6HNO.sub.3.15H.sub.2 O or Al(NO.sub.3).sub.3.9H.sub.
    Type: Grant
    Filed: July 27, 1979
    Date of Patent: March 17, 1981
    Assignee: Reynolds Metals Company
    Inventors: Charles E. Scott, John L. Dewey
  • Patent number: 4254910
    Abstract: A packaging system for the controlled release of volatile substances is disclosed. This packaging system comprises a pair of outer vapor-impermeable barrier layers and a vapor-permeable central layer which is bonded to each of the pair of vapor-impermeable outer layers, with the volatile material being contained between the central vapor-permeable layer and each of the outer vapor-impermeable barrier layers. The central vapor-permeable layer is formed from a pair of vapor-permeable webs which are bonded to one another. The strength of the bond holding the vapor-permeable webs together is less than the strength of the bond between the vapor-permeable central layer and each of the outer vapor-impermeable barrier layers such that upon exerting a separating force on the outer vapor-impermeable barrier layers the central vapor-permeable webs will split, forming a pair of vapor-permeating members.
    Type: Grant
    Filed: October 11, 1979
    Date of Patent: March 10, 1981
    Assignee: Reynolds Metals Company
    Inventor: James P. Martin
  • Patent number: 4251265
    Abstract: There is described a novel process for pelletizing clay containing aluminumous ore comprising the steps of:a. crushing the clay to within an appropriate size range;b. blending the crushed clay with water to achieve a closely defined moisture content;c. pelletizing the clay in a suitable apparatus to provide clay pellets of predetermined size;d. rolling the pellets for a period of time sufficient to round the edges, corners, etc. and to produce a relatively hard, abrasive resistant surface; ande. drying and calcining the pellets at a temperature within the range of from about 1100.degree. to about 1500.degree. F.
    Type: Grant
    Filed: July 27, 1979
    Date of Patent: February 17, 1981
    Assignee: Reynolds Metals Company
    Inventors: Claud L. Stratton, James F. Kane
  • Patent number: 4246239
    Abstract: Alumina values are extracted from clay by the steps of pelletizing into spherical particles, calcining the pellets in a fluidized bed reactor, extracting the clay in about 30-40% nitric acid, purifying the basic aluminum nitrate produced, crystallizing aluminum nitrate nonahydrate, decomposing the nonahydrate in at least three steps, calcining the produced alumina and reconstituting the NO.sub.x gases to nitric acid.
    Type: Grant
    Filed: July 27, 1979
    Date of Patent: January 20, 1981
    Assignee: Reynolds Metals Company
    Inventors: John L. Dewey, Charles E. Scott, James F. Kane, Claud L. Stratton, John C. Rushing, Robert H. Spoonts
  • Patent number: 4246300
    Abstract: Can bodies are held by means, such as a vacuum, magnetic or other means onto rotating, disc-shaped pads which accompany the cans throughout an indexing route. A can centering guide positions each can on the center of one of the pads to insure eventual alignment with spray guns at two spray stations downstream. A spinner-drive belt encircles a turret and forms a substantially continuous rotational drive for spinning the can-bearing pads. When a vacuum means is employed, the vacuum means comprises a vacuum manifold in the rear of the turret and has manifold groove for vacuum communication with the can through the vacuum pad. As the can-bearing vacuum pads pass along the manifold groove, the cans, being securely centered on the vacuum pads, rotate at the same velocity as the belt-drive vacuum pads.
    Type: Grant
    Filed: February 28, 1979
    Date of Patent: January 20, 1981
    Assignee: Reynolds Metals Company
    Inventor: Eric L. Jensen
  • Patent number: 4244254
    Abstract: A carton for cutting and dispensing sheet material in flattened form with a cutter mechanism for effecting same. The cutter is part of an upper bar suitably attached to the top wall member of the carton with the top normally maintained open by a spring carried by one or both of separate plastic end cap members. The upper bar also carries a pair of parallel plate-like members which extend laterally for substantially the full length of the carton and engages and wipes past a pair of similar parallel plate-like members on a lower bar attached to the front panel. This wiping action places the sheet material, which is manually positioned to overlie the lower bar, in tension with the cutter severing the tensioned sheet material.
    Type: Grant
    Filed: August 17, 1979
    Date of Patent: January 13, 1981
    Assignee: Reynolds Metals Company
    Inventor: Darrell D. Fish
  • Patent number: 4240652
    Abstract: Described is an improved lightweight section of drill rod which is adapted to be coupled with like sections of drill rod in making up a drill string for use with oil well drilling rigs or the like. This drill rod comprises a length of hollow cylindrical aluminum pipe with steel tool joints threaded into the ends thereof. Dowel pins are used to permanently and securely attach the tool joints to the pipe ends.
    Type: Grant
    Filed: May 24, 1979
    Date of Patent: December 23, 1980
    Assignee: Reynolds Metals Company
    Inventors: Lip F. Wong, Benton A. Whiteman
  • Patent number: 4233195
    Abstract: A thermoplastic resin, a leafing grade aluminum paste, and a solvent are mixed to form a metallic printing ink which is useful for metallizing a wide range of paper stocks by selected conventional printing processes, such as rotogravure printing. The metallic ink can be applied at four pounds per ream (6.5 g/m.sup.2) of dry coating to form a satisfactory moisture barrier, but the ink is similar to paint in that a glossy aluminum finish is produced by leafing of the aluminum particles when the coated paper is heated, as by passing the paper over a heated roll.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: November 11, 1980
    Assignee: Reynolds Metals Company
    Inventor: W. Ralph Mills