Patents Examined by J. C. Cannon
  • Patent number: 4440831
    Abstract: Improved zinc silicate phosphor particles are made by using silicic acid particles in the range from 0.7 to 10 micrometers coated with Mn.sub.2 O.sub.3 .multidot.xH.sub.2 O and then a layer of ZnO particles about an order of magnitude smaller which are fired to form the phosphors. The particle size is held within the range preferred and preferably is even narrower. The particles are not milled or mechanically crushed. Instead, the ZnO powder prevents agglomeration during firing. Baths are provided for formation of the particles prior to firing. Brightness and persistance are improved over conventional phosphors.
    Type: Grant
    Filed: June 30, 1981
    Date of Patent: April 3, 1984
    Assignee: International Business Machines Corporation
    Inventors: James M. Brownlow, Ifay F. Chang
  • Patent number: 4292882
    Abstract: Bullet proof armor comprising a laminated pad with front and rear surfaces and composed of a plurality of loosely related fabric sheets woven of fibres having high tensile strength, said fibres of the fabric adopted to establish gripping and holding engagement on the surface of bullets directed toward and impinging of said front surface and advancing into the pad, and metal abrading means comprising metal abrading particulate material at said front surface and adapted to abrade and condition the surface of bullets whereby the fibres of the fabric can better grip and hold onto the bullets.
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: October 6, 1981
    Inventor: Carol W. Clausen
  • Patent number: 4280970
    Abstract: Membrane forming polymers are converted to hydrophilic polymeric membranes by (a) grafting a polyoxyethylene chain to a membrane forming polymer structure and thereafter forming a membrane; (b) coating a membrane with a polymer to which a polyoxyethylene chain has been grafted; or (c) grafting in situ a polyoxyethylene chain to a formed membrane polymer.
    Type: Grant
    Filed: January 19, 1979
    Date of Patent: July 28, 1981
    Assignee: Puropore Inc.
    Inventor: Robert E. Kesting
  • Patent number: 4246313
    Abstract: Composite article, and method of producing same, comprising a heat-resistant woven fabric substrate having a continuous heat and wear-resistant coating thereon for handling hot glass articles and the like without marring same. The heat-resistant flexible composite material is formed from a tightly woven fabric such as thermoset polyaramid fibers with a continuous imperforate coating of organic-inorganic silicone resin containing a filler of heat-resistant particulate material therein adapted to withstand extensive repeated contact with newly-formed hot glass articles. As required, the flexible composite material may be used alone or as a facing for a rigid structural member formed of metal.
    Type: Grant
    Filed: January 12, 1979
    Date of Patent: January 20, 1981
    Assignee: Owens-Illinois, Inc.
    Inventor: Edward J. Stengle, Jr.
  • Patent number: 4232080
    Abstract: A safety window comprises at least one sheet of glass, which may be tempered, and, on the side thereof facing a interior of the vehicle in which the window is to be mounted, a sheet of transparent plastic material bonded adhesively thereto, the plastic material possessing a high capacity of elastic deformation, a modulus of elasticity below 2,000 daN/cm.sup.2 and an elongation to rupture in excess of 60% with less than 2% plastic deformation, the plastic material having self-healing properties and capable of protecting occupants of the vehicle from being cut if said sheet of glass is broken.
    Type: Grant
    Filed: March 10, 1977
    Date of Patent: November 4, 1980
    Assignee: Saint-Gobain Industries
    Inventors: Roger Orain, Hans Heuser, Hans Ohlenforst, Rudolf Pelzer
  • Patent number: 4228219
    Abstract: A method of coating a substrate surface, which method comprises: (a) applying a primer composition to the substrate surface which primer composition comprises thermoplastic polymer material dispersed in an inert liquid diluent, at least 50% by weight of said theroplastic polymeric material being constituted by at least one thermoplastic aromatic polyethersulphone; (b) before the applied primer composition has become touch-dry, applying a dispersion of a tetrafluoroethylene polymer top-coat material in an inert liquid diluent over the coated substrate; and (c) removing the inert liquid diluent or diluents and sintering the combined coating of the primer and top-coat layers. The primer compositions do not in the claimed method, need to be dried and baked to exert an effective priming action.
    Type: Grant
    Filed: April 26, 1979
    Date of Patent: October 14, 1980
    Assignee: Imperial Chemical Industries Limited
    Inventors: Leslie R. J. Hoy, Malcolm J. Saggers
  • Patent number: 4214036
    Abstract: A channel-shaped sealing, trimming or finishing, or guiding strip comprises a carrier covered with flexible covering material, and is characterized in that relatively stiff or semi-rigid lengths of the carrier alternate along the length of the strip with relatively flexible lengths of the carrier, the relatively flexible lengths of the carrier being positioned at predetermined places where bends in the strip are required in use. The strip may be in the form of a closed loop.
    Type: Grant
    Filed: September 5, 1978
    Date of Patent: July 22, 1980
    Assignee: Draftex Development AG
    Inventor: Robert G. Bright
  • Patent number: 4214032
    Abstract: The insulating felt comprises 23 to 39% by weight of pyrolytic resin, 35 to 54% by weight of asphalt, 4 to 7% by weight of softener, 2.5 to 8% by weight plasticizer, 2 to 4% by weight of fine grained material and 10 to 25% by weight of reinforcing material. The felt is useful for water proofing or preventing corrosion of metal and concrete objects.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: July 22, 1980
    Assignee: Magyar Asvanyolaj es Foldgaz Kiserleti Intezet
    Inventors: Rezso Csikos, Andras Balogh, Jozsef Herendi, L. Peter Farkas, Janos Remenyi, Sandor Koltay
  • Patent number: 4214030
    Abstract: A sheet of a crosslinkable polymer of ethylene having a melt index of at least 1.5 is supported by a sheet of a polymer having a melt index of 0.9 or less. The support sheet provides support for the sheet of the crosslinkable polymer of ethylene during a thermoforming operation.
    Type: Grant
    Filed: June 6, 1978
    Date of Patent: July 22, 1980
    Assignee: Phillips Petroleum Company
    Inventors: James L. Rakes, Joseph R. Harder
  • Patent number: 4211602
    Abstract: In blood dialyzers in which hollow fibers are potted in plastic tube sheets and the tube sheets are then cut to form a manifold surface providing access to the interior of the hollow fibers, blood clotting at the manifold surface is greatly reduced by treating the surface to increase the radii of the microscopic sharp edges of the fiber ends which are produced by the cutting process. The smoothing of the fiber ends can be accomplished by momentary heating, flame polishing, etching, or coating of the manifold surface with a varnish.
    Type: Grant
    Filed: May 4, 1978
    Date of Patent: July 8, 1980
    Inventor: Robert C. Brumfield
  • Patent number: 4206260
    Abstract: Insulation particularly suitable for high voltage power cable consists essentially of low density polyethylene (or crosslinked polyethylene) and an effective amount of an alcohol of 6 to 24 carbon atoms which is a tree growth inhibitor capable of imparting at least a thousand-fold increase in electrical endurance as measured by an accelerated test procedure. Electrical trees can be initiated in the polyethylene in the presence of the alcohol. However, increased electrical endurance is obtained through inhibition of continued tree growth at that site.A precursor composition for a preferred insulation contains (i) low density polyethylene, (ii) a peroxide crosslinking agent, and (iii) an alcohol of 8 to 12 carbon atoms.
    Type: Grant
    Filed: November 20, 1978
    Date of Patent: June 3, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Eugene J. McMahon
  • Patent number: 4206258
    Abstract: A multilayer felt band, particularly for paper manufacture consisting of rmoplastic material where at least one layer comprises storage spaces having the shape of channels obtained by melting binding portions of fibers, the channel walls being inclined with respect to the surface of the felt band at angles between 0.degree. to 80.degree..
    Type: Grant
    Filed: May 8, 1978
    Date of Patent: June 3, 1980
    Assignee: IRAPA Vyvojovy a racionalizacno ustav prumyslu papiru a celulozy
    Inventor: Cestmir Balcar
  • Patent number: 4205111
    Abstract: Laminates comprising at least one reinforcing layer, for example of metal or of fiber-reinforced duroplast resin, bonded to a foamed polyimide layer are disclosed, wherein the particular nature of the polyimide foam imparts high temperature strength properties to the laminates and permits them to be made by methods, also disclosed, employing more extreme conditions of temperature, pressure, and time than are otherwise operable for making conventional laminates.
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: May 27, 1980
    Assignee: Rohm GmbH
    Inventors: Wolfgang Pip, Klaus Winter
  • Patent number: 4204023
    Abstract: An adhesive composition and an adhesive tape comprising a substrate and such adhesive composition are provided. The adhesive composition comprises the product of the polymerization of acrylic monomers in an aqueous system containing an emulsifying agent which comprises a mixture of (a) a sulfonated diphenyl ether and (b) a sulfonated reaction product of formaldehyde and naphthalene.
    Type: Grant
    Filed: July 7, 1978
    Date of Patent: May 20, 1980
    Assignee: The Kendall Company
    Inventor: Edward Witt
  • Patent number: 4202449
    Abstract: Disclosed is a protecting device for use on the edges of boxes, cartons or like objects, especially, but not exclusively, on edge areas where ropes or lashings are tied around the objects. The protecting device is generally formed from a rod from which pieces of desired length can be cut off and has generally, but not exclusively, a right angular cross section, an outward protruding arcuate shape covering threequarters or substantially threequarters of a circle at the vertex of the angle, and sides of the angle which may be bent outward at their outer ends and/or provided with wave-shaped outward protrusions.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: May 13, 1980
    Inventor: Anders Bendt
  • Patent number: 4200937
    Abstract: In a method of manufacturing garments, a mold is provided in the shape and size of the desired garment. The mold includes a matrix of conductors by which variable predetermined electrostatic fields can be established over the mold. A plurality of fiber layers are electrostatically deposited onto the mold to form a garment wherein at least some of the fibers comprising preselected layers are oriented according to the elasticity requirements of particular areas of the garment. Preferably, the garment is then at least partially precured, after which a plurality of colorants can be applied in sequence electrostatically to the garment to produce predetermined patterns, if desired. The garment is then cured to set the fiber layers and colorants, after which the garment is removed from the mold for subsequent finishing.
    Type: Grant
    Filed: December 21, 1978
    Date of Patent: May 6, 1980
    Assignee: Haggar Company
    Inventors: Joseph W. A. Off, Judson H. Early
  • Patent number: 4201830
    Abstract: The specification discloses an energy absorbing structure having a rod-like lateral cross section such as a hand rail, steering wheel or the like in which an inner structural member is made of a material capable of providing rigid structural strength, but being frangible upon sharp impact of the type encountered in vehicle accidents so as to absorb energy from the impact, and an exterior covering generally surrounding the inner member and being made of a somewhat stretchable, flexible, tough skinned and nonabrasive plastic material of sufficient thickness and strength that in the event the inner member does break, the covering prevents sharp ends or edges of the broken inner member from protruding and impaling an individual impacting the structure.
    Type: Grant
    Filed: September 11, 1978
    Date of Patent: May 6, 1980
    Assignee: U.S. Industries
    Inventor: Carl H. Wollen
  • Patent number: 4199645
    Abstract: A multi-layer adhesive material for producing an adhesive bond between two essentially mutually parallel surfaces, especially for providing an adhesive bond between a surface of a ski and a surface of an attachment body for the ski, wherein the multi-layer adhesive material contains two outer adhesive surfaces and at least one predominantly elastic carrier layer. There is provided in addition to the predominantly elastic carrier layer at least one predominantly plastic carrier layer having at its outwardly directed side or face one of the two adhesive surfaces of the adhesive material.The method of using such adhesive material for establishing an adhesive connection between the aforementioned surfaces contemplates profiling the surface of the body to be connected with another body for increasing its adhesive surface, and which profiled surface faces the predominantly plastic carrier layer of the adhesive material.
    Type: Grant
    Filed: February 2, 1978
    Date of Patent: April 22, 1980
    Inventor: Gunter Schwarz
  • Patent number: 4199647
    Abstract: Lubricants and processing aids for thermoplastic synthetic fibers, particularly polyester and nylon fibers are disclosed together with processes therefor. Said lubricants comprise compounds having the structural formula: ##STR1## in which R and R.sub.1 are independently selected from straight or branched chain aliphatic radicals having about 7 to about 22 carbon atoms; A is oxyethylene or a heteric mixture of oxyethylene and oxypropylene residues derived from the reaction of ethylene oxide and 1,2-propylene oxide in the respective ratio by weight of about 3:7 to about 9:1; and n has a value to produce a compound having a molecular weight of about 300 to about 3000. Said compounds are the ethoxylated or alkoxylated reaction product of the reaction product of an alpha-olefin epoxide and a fatty alcohol.
    Type: Grant
    Filed: November 30, 1977
    Date of Patent: April 22, 1980
    Assignee: BASF Wyandotte Corporation
    Inventors: David D. Newkirk, Robert B. Login
  • Patent number: 4199400
    Abstract: Migration-resistant binder compositions for bonding nonwoven fibers are disclosed. These compositions comprise (A) an anionically-stabilized polymer latex; (B) a water-soluble polymer of 20-100% by weight of mer units containing an amine group and having a viscosity average molecular weight between 5,000 and 300,000; (C) a volatile base and (D) 0 to 80% of pigment based on the total polymer weight of (A) and (B). Usually, the compositions have a solids content between 10% and 60% by weight, a viscosity below 3,000 centipoise, a pH above 5, and a component (B) content between 0.1% and 20% by weight of the solids. In alternative compositions, component (B) is replaced by component (B'), a water-insoluble polymer with the same amine group content and a viscosity average molecular weight between 5,000 and 100,000. (A), (B) and (B') are polymers of a .alpha.-.beta. ethylenically unsaturated monomers.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: April 22, 1980
    Assignee: Rohm and Haas Company
    Inventors: Ronald D. Bakule, R. A. Gill, Lawrence K. Wempe