Patents Examined by Ralph Husack
  • Patent number: 3950579
    Abstract: The method of forming relatively thick deposits of polymeric material on a surface of small threaded articles which comprises forming a thin coating on the surface of a solution of the polymeric material, at least partly drying the coating to eliminate some or all of the solvent for the polymeric material, applying a barrier coating to the polymeric material to protect it from attack by solvent, and applying a second thin coating of a solution of the polymeric material. The operation may be repeated as necessary to build up the required thickness of deposit. Coating is by successive immersions in baths of the polymeric solution separated by immersion in baths of the barrier material, or by other bulk treatment therewith, followed by partial drying before subsequent immersions and final drying after the last immersion.
    Type: Grant
    Filed: March 15, 1974
    Date of Patent: April 13, 1976
    Assignee: The Oakland Corporation
    Inventor: Richard B. Wallace
  • Patent number: 3950590
    Abstract: A procedure is provided for enhancing the thermal stability of a multifilament polyester fibrous material during use when incorporated in a rubber tire matrix. A non-uniform deposition of a polyether urethane polymer (as defined) is provided upon at least the outer surface of the polyester fibrous material intermediate the conventional inner coating of fiber finish and the conventional outer coating of adhesive. The preformed polyether urethane polymer is applied from an aqueous dispersion of the same (as described), and is deposited in a concentration of about 1 to 6 percent by weight of the resulting fibrous material. The enhanced thermal stability of the resulting polyester fibrous material conveniently may be demonstrated by a determination of the strength retention of the same following subjection to heat while incorporated in a rubber matrix.
    Type: Grant
    Filed: June 24, 1974
    Date of Patent: April 13, 1976
    Assignee: Celanese Corporation
    Inventors: Robert Edelman, Michael M. Besso
  • Patent number: 3949147
    Abstract: Shaped refractory articles, especially turbine casing liners, are formed of a refractory fibre/watersoluble binder composition, the hardness, strength and density of which do not vary across the bulk composition.
    Type: Grant
    Filed: January 29, 1973
    Date of Patent: April 6, 1976
    Assignee: Foseco International Limited
    Inventor: Peter Frederick Hawthorne
  • Patent number: 3947922
    Abstract: A card clothing foundation, to which the carding wires are fitted, has an anti-friction surface layer of polyurethane about 0.006 inch in thickness and containing silicone.
    Type: Grant
    Filed: January 15, 1973
    Date of Patent: April 6, 1976
    Assignee: The English Card Clothing Company Limited
    Inventor: Peter Ibbotson
  • Patent number: 3949141
    Abstract: A composition for use in the treatment of glass fibers or metal fibers to securely bond such fibers to elastomeric materials in the manufacture of fiber-reinforced elastomeric products containing as an essential ingredient an aziridine polyester prepared by reaction of ethylene imine with an unsaturated polyester.
    Type: Grant
    Filed: May 6, 1974
    Date of Patent: April 6, 1976
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: Alfred Marzocchi, Nicholas S. Janetos
  • Patent number: 3949140
    Abstract: Organo silicon compounds prepared by reaction of a dialkyl hydrazine of the formula ##EQU1## wherein R.sub.1 and R.sub.2 are each alkyl with an epoxy silane such as an epoxy silane of the formula ##EQU2## or an epoxy silane of the formula ##SPC1##Where y is an integer and R.sub.5 is alkyl. The organo silicon compounds described can be employed in the treatment of glass fibers to improve the bonding relationship between glass fibers and resins or elastomeric materials.
    Type: Grant
    Filed: May 6, 1974
    Date of Patent: April 6, 1976
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: Lawrence P. Biefeld, Kevin M. Foley, Frank Paul McCombs
  • Patent number: 3947615
    Abstract: Sheet moulding compound (S.M.C.) is made by impregnating glass fibre with hot polyester resin matrix containing a soluble gelling agent, e.g. sodium or potassium stearate which causes the matrix to gel on cooling.
    Type: Grant
    Filed: May 22, 1974
    Date of Patent: March 30, 1976
    Assignee: BP Chemicals International Limited
    Inventor: David Philip Fry
  • Patent number: 3946134
    Abstract: A protective coating consisting of an aluminum or magnesium phosphate complex is used to encapsulate a wide variety of organic and inorganic particles. The coating is particularly applicable to organic and inorganic pigments and serves to improve the light, heat and chemical stability of these pigments. The coating is formed in situ by complexing the phosphate with the metal, preferably in the presence of ions of fluoride or fluoborate and depositing the same onto the surface of the particles.
    Type: Grant
    Filed: June 4, 1974
    Date of Patent: March 23, 1976
    Assignee: The Harshaw Chemical Company
    Inventor: Caryl M. Sherman
  • Patent number: 3946131
    Abstract: Organo silicon compounds having the formula ##EQU1## wherein R.sub.1 and R.sub.2 are alkyl, R.sub.5 is a hydrocarbon group or an unsaturated ester group, R.sub.6 and R.sub.7 are alkoxy, R.sub.5 or hydrogen, and R.sub.8 is hydrogen or an organic group such as hydrogen, alkyl or a group of the formula--CH.sub.2 --O--R.sub.4 --where R.sub.4 is aryl, alkyl, alkenyl or a group of the formula ##EQU2## where R' is hydrogen or methyl. The compounds of this invention are prepared by reaction of a dialkyl hydrazine with an epoxide in the presence of an organo silicon compound and are used as coupling agents in the treatment of glass fibers. Also disclosed are glass fibers coated with aminimide compounds containing aluminum, gallium, phosphorus, arsenic, antimony, boron, germanium or tin.
    Type: Grant
    Filed: May 6, 1974
    Date of Patent: March 23, 1976
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: Lawrence P. Biefeld, Kevin M. Foley, Frank Paul McCombs
  • Patent number: 3944706
    Abstract: Magnet wire bearing a poly(ethylene trimellitate imide) varnish coating which is capable of forming a unitary structure after producing a fabricated article from the coated wire where the poly(ethylene trimellitate imide) cures on heating or application of electrical current.
    Type: Grant
    Filed: August 1, 1974
    Date of Patent: March 16, 1976
    Assignee: Standard Oil Company
    Inventor: Thomas S. Czajka
  • Patent number: 3944702
    Abstract: A binder composition of colloidal silica and silsesquioxane polymer (RSiO.sub.3 /.sub.2) is applied to fibrous masses from an acidified water-alcohol vehicle to fabricate coherent three-dimensional structures, such as bonded asbestos mats.
    Type: Grant
    Filed: June 24, 1974
    Date of Patent: March 16, 1976
    Assignee: Dow Corning Corporation
    Inventor: Harold A. Clark
  • Patent number: 3944685
    Abstract: Heat barrier materials are prepared by forming an intimate admixture of alkaline earth sulfate and finely divided carbonaceous material into a shaped composition and subjecting said shaped composition to a high temperature to cause a surface reaction to produce a coating comprising alkaline earth sulfide on the surface of said shaped composition.
    Type: Grant
    Filed: June 28, 1971
    Date of Patent: March 16, 1976
    Assignee: Plastonium, Inc.
    Inventor: Rudy W. Gunnerman
  • Patent number: 3944695
    Abstract: A heat printing sheet is prepared by coating a base with a molten printing composition which comprises 10 - 60% by weight of at least one tackifier selected from the group consisting of terpene resins, hydrogenated cyclopentadiene resins, cumarone-indene resins, phenol resins, styreneolefin copolymers, .alpha.-methylstyrene-vinyltoluene copolymers, rosins, polyol esters, hydrogenated rosins, hydrogenated rosin-polyol esters and rosin; 5 - 50% by weight of at least one wax selected from the group consisting of plant wax, petroleum wax, coal wax, synthetic wax; 10 - 60% by weight of an ethylene-vinyl acetate copolymer which contains 5 - 50% by weight of a vinylacetate component and which has a melt index of 4 - 1000 g/10 min, 5 - 40% by weight of a filler which is bendable with said tackifier, wax or ethylene-vinylacetate copolymer; and a pigment.
    Type: Grant
    Filed: August 13, 1973
    Date of Patent: March 16, 1976
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Yujiro Kosaka, Hitoshi Kuroki, Masakuni Kawasaki
  • Patent number: 3944700
    Abstract: A method of manufacturing polyamide coated textile material comprises treatment of textile material with a solution of polyamide and benzene sulphonic acid n-butylamide as plasticizer in formic acid followed by contacting the textile material with water in order to precipitate the polyamide on the textile material.
    Type: Grant
    Filed: April 19, 1974
    Date of Patent: March 16, 1976
    Assignee: L. Mombers B.V.
    Inventor: Wilhelmus L. R. Mombers
  • Patent number: 3941909
    Abstract: A process for improving the adhesive properties of the surface of a body or article derived from co-polymers or terpolymers of ethylene and propylene wherein the surface of the article or body is treated with a primer containing an isocyanate-terminated prepolymer which is the reaction product of a rubber-like, hydroxyl-containing alkadiene-derived polymer and an organic diisocyanate.
    Type: Grant
    Filed: June 19, 1974
    Date of Patent: March 2, 1976
    Assignee: Stamicarbon, B.V.
    Inventors: Lowhardt A. A. Schoen, Franciscus A. Busschers
  • Patent number: 3941642
    Abstract: A labeling machine wherein there is a picker reciprocably movable between a label magazine and a transfer position for transferring labels to a gripper assembly at the transfer position whereupon the gripper assembly takes the label from the picker and applies it to a container and wherein there is an adhesive pick-up roll supported in a container of adhesive and a transfer roll reciprocably movable in timed relation to the movement of the picker to transfer a coating of adhesive from the pick-up roll to the surface of the picker; characterized in that the transfer roll is a driven roll and is rotated while in contact with the pick-up roll at least one complete revolution, and further characterized in that while in contact with the surface of the picker is rotated no more than one complete revolution as it travels from one end of the picker surface to the other end thereof.
    Type: Grant
    Filed: May 9, 1974
    Date of Patent: March 2, 1976
    Assignee: A-T-O, Inc.
    Inventor: Edward A. Schnier
  • Patent number: 3941901
    Abstract: Method for producing homogeneous surface alignment of liquid crystal materials by applying to the surfaces of transparent plates bounding a liquid crystal film a polymer which is subjected to a shear thinning technique to cause elongation and alignment of long chain polymers. In certain embodiments of the invention, the surfaces are coated with a polymer treated with a dichroic dye such that a polarizing film is formed adjacent the liquid crystal film. This eliminates the need for separate polarizers on opposite sides of a liquid crystal display.
    Type: Grant
    Filed: February 15, 1974
    Date of Patent: March 2, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventor: Thomas B. Harsch
  • Patent number: 3940518
    Abstract: A method for preparing polymer coated rolls for use in a xerographic reproducing apparatus is given whereby coatings of tetrafluoroethylene primer and enamel are applied, dried at low temperatures and baked at temperatures below the fusion temperature followed by a final heating step to fuse the tetrafluoroethylene enamel coating.
    Type: Grant
    Filed: April 26, 1974
    Date of Patent: February 24, 1976
    Assignee: Xerox Corporation
    Inventors: Edward F. Bowler, Jr., Joseph M. Stupin, Jr., Edward G. Williams
  • Patent number: 3940508
    Abstract: An improved precoat layer of highly insoluble, low molecular weight polyvinyl alcohol is uniformly thinly dispersed and dried upon the interior surface of a television picture tube faceplate panel. The precoat is applied by a slurry process with the aqueous slurry containing a predetermined amount of the normally soluble, low molecular weight polyvinyl alcohol and with the material being rendered highly insoluble by adjusting the pH value of the aqueous slurry to a value of less than about 3. The uniformly dispersed and dried precoat provides a highly adherent layer on the glass faceplate panel and the subsequently deposited phosphor pattern is highly adherent to this layer.
    Type: Grant
    Filed: September 16, 1974
    Date of Patent: February 24, 1976
    Assignee: Westinghouse Electric Corporation
    Inventor: Harold D. Wilcox
  • Patent number: 3940536
    Abstract: A separator for a galvanic element wherein partially fused glass fibers are coated by a coating consisting of grains of thermo-hardening synthetic material immersed in a natural or synthetic latex to mechanically reinforce the knots in the glass fiber network resulting from partial fusion of the glass fibers without blocking the pores of the partially fused fiber network.
    Type: Grant
    Filed: July 3, 1973
    Date of Patent: February 24, 1976
    Assignees: Compagnie Europeenne d'Accumulateurs, Societe Fulmen
    Inventors: Johann Pitsch, Pierre Lasserre