Synthetic Resin Or Polymer In Plural Coatings, Each Of Different Type Patents (Class 428/383)
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Patent number: 6203907Abstract: A composition comprising polyethylene and, for each 100 parts by weight of polyethylene, about 0.1 to about 3 parts by weight of the reaction product of (i) an aliphatic diacid anhydride or a polymer or copolymer thereof wherein the anhydride has 4 to 20 carbon atoms; and (ii) a polymer selected from the group consisting of a polycaprolactone, a polyalkylene glycol, a monoalkyl ether of a polyalkylene glycol, and a mixture of two or more of said polymers, the weight ratio of component (ii) to component (i) being in the range of about 0.05:1 to about 1:1.Type: GrantFiled: April 20, 1998Date of Patent: March 20, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: Michael John Keogh
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Patent number: 6197848Abstract: A composition comprising an ethylene containing polymer, a crosslinking agent and a treated filler material. The treated filler material comprises a treating agent which is a polymer comprising acrylonitrile and at least one other monomer. A preferred treated filler material is a treated carbon black and a preferred ethylene containing polymer is an ethylene vinyl acetate (EVA) polymer. A semiconductive composition of the present invention may be advantageously utilized in electrical wire and cable application.Type: GrantFiled: February 17, 1998Date of Patent: March 6, 2001Assignee: Cabot CorporationInventors: Robert S. Whitehouse, Thomas F. Reed
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Patent number: 6190771Abstract: In a fusing assembly for fixing toner to a receiver and having a fuser roller and a pressure roller forming a fixing nip, a metering roller, a polymeric release agent is applied to the metering roller and a release agent donor roller for receiving polymeric release agent from the metering roller and applying it to the surface of the fusing roller, the release agent donor roller comprising an outer layer including a silicone material selected so that its swelling in 1000 cts poly(dimethylsiloxane) is less than 6% by weight.Type: GrantFiled: December 28, 1998Date of Patent: February 20, 2001Inventors: Jiann H. Chen, Stephen V. Davis, Robert A. Lancaster
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Patent number: 6190770Abstract: A pulsed voltage surges resistant enamelled wire comprises a metal conductive wire and at least one shield layer outside the wire, the at least one shield layer is provided by a coating composition comprising (a) a synthetic resin, (b) an organic solvent and (c) &agr;-form Al2O3 particles and &ggr;-form Al2O3 particles.Type: GrantFiled: June 10, 1999Date of Patent: February 20, 2001Assignee: Tai-I Electric Wire & Cable Co.Inventors: Chih-Min Jang, Ru-Shi Liu, Chi-Ting Du, Tsair-Shyang Huang, Yao-Chung Tu, Wen-Hsiung Liu, Wen-Cheng Wu, Tsen-Hsu Lin
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Patent number: 6191187Abstract: An optical glass fiber coating composition comprising: (A) a urethane (meth)acrylate polymer, (B) a (meth)acrylate compound represented by the following formula (1), go wherein R1 is a hydrogen or a methyl group (C) a reaction diluent, and (D) a polymerization initiator. The composition has superior storage stability over a long period of time and, at a cured state, exhibits excellent UV resistance, heat resistance, yellowing resistance, and oil resistance.Type: GrantFiled: April 11, 1997Date of Patent: February 20, 2001Assignees: DSM N.V., JSR CorporationInventors: Tetsuya Yamamura, Masakatsu Ukon, Zen Komiya, Takashi Ukachi
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Patent number: 6180706Abstract: A composition comprising: (a) a low density homopolymer of ethylene prepared by a high pressure process; (b) a scorch inhibitor selected from the group consisting of a substituted hydroquinone; 4,4′-thiobis(2-methyl-6-t-butylphenol); 2,2′-thiobis(6-t-butyl-4-methylphenol); and 4,4′-thiobis(2-t-butyl-5-methylphenol) in an amount of about 0.02 to about 0.07 part by weight of scorch inhibitor per 100 parts by weight of homopolymer; (c) a cure booster; and (d) an organic peroxide.Type: GrantFiled: June 16, 1998Date of Patent: January 30, 2001Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: Michael John Keogh
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Patent number: 6169126Abstract: Optical fiber primary coating systems are disclosed having excellent ribbon stripping and adhesion behavior. The coatings are radiation-curable. The excellent stripping and adhesion behavior can be inner primary coating composition having a slip enhancing component and a high modulus outer primary coating composition. Combination of means can be employed. Stripping behavior can be measured by crack propagation and fiber friction measurements.Type: GrantFiled: July 15, 1999Date of Patent: January 2, 2001Assignee: DSM N.V.Inventors: David M. Szum, Chander P. Chawla, James R. Petisce, George Pasternack, Timothy E. Bishop, Paul E. Snowwhite, Edward P. Zahora
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Patent number: 6162542Abstract: The process of the invention to make miniaturized multipolar cables includes the steps of combining together a plurality of individually insulated conductors, inserting a filling in a pasty state and containing mineral fillers into the gaps existing between the conductors, partly hardening the filling and disposing the other cable components, in particular the sheath, around the conductors-filling assembly, and letting the filling become completely hard within the produced cable.Type: GrantFiled: June 22, 1999Date of Patent: December 19, 2000Assignee: Pirelli Cavi S.p.A.Inventors: Luca Castellani, Luca De Rai, Pasquale Volpe
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Patent number: 6156403Abstract: An article which comprises (1) a composite comprising a polyurethane matrix including fibrous or particulate reinforcement, the polyurethane matrix being formed in situ about the reinforcement by reaction of polyurethane forming components at a temperature below the melting point of the reinforcement and (2) a polymeric film bound to at least one surface of the composite, the film being bound to the composite by adhesion to the polyurethane matrix which emerges or is enhanced as the matrix is formed in situ.Type: GrantFiled: November 6, 1998Date of Patent: December 5, 2000Assignee: RanDemo, Inc.Inventor: William H. Cochran
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Patent number: 6139957Abstract: A communications cable is provided having at least one elongate electrical conductor surrounded by a layer of insulating material, said layer comprising a foamed fluorinated polymer formed using a liquid or solid blowing agent having a vaporization temperature at ambient temperature of between about 140.degree. F. and about 700.degree. F. The elongate electrical conductors can be provided as at least one pair of twisted wires, each wire thereof surrounded by a layer of insulating material comprising the foamed fluorinated polymer. The communications cable includes insulated wires which possess a layer of foamed fluorinated polymer insulating material having uniform thickness and electrical properties along the length of the wire. In addition, the fluorinated polymer can be applied on the conductor in a relatively thin layer which minimizes the amount of fluorinated polymer material used to insulate the individual conductors.Type: GrantFiled: August 28, 1998Date of Patent: October 31, 2000Assignee: CommScope, Inc. of North CarolinaInventor: Gary L. Craton
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Patent number: 6136880Abstract: A radiation-curable composition for optical fiber coatings comprising about 10 wt. % to about 90 wt. % of at least one radiation-curable oligomer (A), about 10 wt. % to about 90 wt. % of at least one radiation-curable monomer diluent (B), and an effective amount of at least one photoinitiator (C) represented by formula (1): ##STR1## wherein Ar.sup.1 to Ar.sup.3 are aromatic groups which may have one or more substitution groups.Type: GrantFiled: April 22, 1998Date of Patent: October 24, 2000Assignees: DSM N.V., JSR CorporationInventors: Paul Eugene Snowwhite, Timothy Edward Bishop, David Michael Szum, Zen Komiya, Miyuki Ishikawa, Takashi Ukachi
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Patent number: 6114036Abstract: Multilayer structure having a first layer of a fire retardant polyolefin comprising composition and a second layer of a polyamide comprising composition comprises up to 20% by weight of a phosphonate ester having the structure: ##STR1## wherein the value of "x" is 0 or 1.Type: GrantFiled: March 17, 1992Date of Patent: September 5, 2000Assignee: AlliedSignal Inc.Inventors: Robert Eugene Rinehart, Peter Julius Kartheiser
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Patent number: 6110593Abstract: Optical fiber primary coating systems are disclosed having excellent ribbon stripping and adhesion behavior. The coatings are radiation-curable. The excellent stripping and adhesion behavior can be inner piramry coating composition having a slip enhancing component and a high modulus outer primary coating composition. Combination of means can be employed. Stripping behavior can be measured by crack propagation and fiber friction measurements.Type: GrantFiled: May 21, 1998Date of Patent: August 29, 2000Assignee: DSM N.V.Inventors: David M. Szum, Chander P. Chawla, James R. Petisce, George Pasternack, Timothy E. Bishop, Paul E. Snowwhite, Edward P. Zahora
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Patent number: 6106943Abstract: A reinforcing cord which strongly adheres to a mixed rubber comprising a hydrogenated acrylonitrile-butadiene rubber having excellent flex resistance and heat resistance and a hydrogenated acrylonitrile-butadiene rubber having dispersed therein zinc methacrylate, and a treating material for forming a coating layer on the cord. The reinforcing cord comprises a fiber for reinforcing a rubber, a first coating layer formed on the surface of the fiber, obtained by coating a treating material comprising a resorcin/formalin condensate and a rubber latex on the surface thereof, and a second coating layer formed on the first coating layer, obtained by coating another treating material comprising a rubber compound, a vulcanizing agent and one member selected from the group consisting of a silane coupling agent, a maleimide type vulcanization assistant and a dimethacrylate type vulcanization assistant.Type: GrantFiled: February 17, 1999Date of Patent: August 22, 2000Assignee: Nippon Sheet Glass Co., Ltd.Inventor: Mitsuharu Akiyama
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Patent number: 6099961Abstract: A new form of construction for synthetic cables used for the anchoring of floating platforms in offshore oil production is described. A desirable requisite for this application is that the durability of the cable is not affected by deterioration of its strong core by virtue of the aggressive mechanical action of particles of the sea bed which might penetrate the cable and reach its core. For this purpose a layer (2) to protect the core (1) comprising a strip of polymer material placed in helical fashion which permits the passage of water and prevents the passage of particles of the sea bed towards the core (1) is placed between the cable core (1) and its outer braided protective layer (2).Type: GrantFiled: May 6, 1998Date of Patent: August 8, 2000Assignee: Petroleo Brasileiro S.A.-PetrobrasInventors: Cesar Jose Moraes Del Vecchio, Adolfo Tsuyoshi Komura
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Patent number: 6087592Abstract: An enameled wire having high resistance to partial discharges includes an electrical conductor and at least two layers of enamel on the conductor. At least one of these layers is made from resin charged with weakly conductive particles. The outermost layer constitutes an overcoat and is made from thermo-adherent resin. At least the layer directly underlying the overcoat is made from the resin charged with the particles.Type: GrantFiled: February 24, 1998Date of Patent: July 11, 2000Assignee: AlcatelInventors: Rolf Nagel, Virginie Studer, Laurent Preux, Leonard Danel
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Patent number: 6085010Abstract: Provided is a ribbon assembly having the functional capability of providing mid-span access without the use of additives, monomers or oligomers containing fluorine or silicone. The ribbon assembly is formulated from an oligomer which reduces the surface energy of the ink coating and/or the matrix material.Type: GrantFiled: August 5, 1998Date of Patent: July 4, 2000Assignee: DSM N.V.Inventors: Edward P. Zahora, Edward J. Murphy, David M. Szum, John T. Vandeberg, Gerry K. Noren, Eva Montgomery
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Patent number: 6077605Abstract: The disclosure relates to silica and/or silicate containing coatings upon particles, fibers, powders, among other substrates. The solubility of the coating can be modified by being treated with a metal chloride.Type: GrantFiled: January 30, 1998Date of Patent: June 20, 2000Assignee: Elisha Technologies Co LLCInventors: Nancy M. McGowan, Robert L. Heimann, William M. Dalton
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Patent number: 6073832Abstract: Method and apparatus, by which the relative displacement between molten solder and a terminal pin is caused and further, a coating formed on an end portion of a coil is removed by molten solder and thus the terminal portion is firmly soldered to the terminal pin after removing the coating. In contrast, in the case of conventional soldering method, when a terminal pin, which is provided on a terminal base and has an end portion of a coil wound therearound, is dipped in molten solder contained in a solder bath, there is caused no relative displacement between the pin and the molten solder. Thus, sometimes, the coating formed on the coil still remains, so that the soldering connection between the terminal pin and the coil is not sufficiently achieved. However, in accordance with the method and apparatus of the present invention, the firm connection therebetween is achieved. Consequently, the reliability thereof is enhanced.Type: GrantFiled: May 21, 1998Date of Patent: June 13, 2000Assignee: Tamagawa Seiki Kabushiki KaishaInventor: Takahiro Itoh
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Patent number: 6072970Abstract: A charge roller has a steel shaft and conductive outer cylindrical body which is formed by curing with heat a blend comprised of epichlorohydrin rubber, mineral-oil-free zinc oxide dispersion, stearic acid as a lubricant, accelerators and a sulfur donor. The roller has a long useful life and does not express oil while inactive.Type: GrantFiled: October 29, 1996Date of Patent: June 6, 2000Assignee: Lexmark International, Inc.Inventors: William Hargis Barton, Alan Stirling Campbell, Martin Victor DiGirolamo, Donald Wayne Stafford
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Patent number: 6071613Abstract: A hybrid fiber reinforcing system that enhances ductility of concrete at small and large crack openings, while avoiding the necessity of using steel fibers at high (e.g., 1%) volumes, by taking into account Young's modulus, deploying large surface area to volume ratios for improved anchorage, and using different relative lengths.Type: GrantFiled: November 3, 1998Date of Patent: June 6, 2000Assignee: W. R. Grace & Co.-Conn.Inventors: Klaus Alexander Rieder, Neal S. Berke
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Patent number: 6068918Abstract: A corrosion inhibiting composition containing a carrier of an oily or waxy type together with active components including at least one corrosion-inhibitor of the azole-type and a co-corrosion-inhibitor, together with optional water repellants or certain alcohols alone or in admixture. The compositions are suitable for protecting from corrosion steel wire or steel cord composed of several steel filaments.Type: GrantFiled: October 14, 1997Date of Patent: May 30, 2000Assignee: N.V. Bekhaert S.A.Inventors: Jan Marcel Van Der Veer, Hendrik Laurens Mulder, Gerardus Johannes Joseph Streefland, Johan Vanbrabant, Frank Deruyck
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Patent number: 6068917Abstract: A composite metallic wire includes: an inner layer having a cross-sectional shape of a rough circle; and a metal outer layer having a cross-sectional shape of a rough ring; wherein the composite metallic wire has a diameter of 15 .mu.m or less and an electric resistance of 300 .OMEGA./m or less. A composite type magnetic head using as a coil wire a composite wire comprising: (1) a composite metallic wire comprising: an inner layer having a cross-sectional shape of a rough circle; and a metal outer layer having a cross-sectional shape of a rough ring; wherein the composite metallic wire has a diameter of 15 .mu.m or less and an electric resistance of 300 .OMEGA./m or less, and (2) an insulating coat provided in the outer periphery of the outer layer.Type: GrantFiled: March 26, 1997Date of Patent: May 30, 2000Assignee: NGK Insulators, Ltd.Inventors: Nobuo Tsuno, Soichiro Matsuzawa
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Patent number: 6060409Abstract: A flexible composite comprising a high tensile strength fibrous component dispersed within a flexible or resilient polymeric matrix, the matrix and fibrous component being essentially unbonded to each other so that the composite retains essentially the flexibility of the polymeric matrix.Type: GrantFiled: April 1, 1999Date of Patent: May 9, 2000Assignee: William H. CochranInventor: William H. Cochran
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Patent number: 6060162Abstract: A pulsed voltage surge resistant magnet wire comprising a conductor, a continuous and concentric and flexible uniform coat of base insulation material superimposed on the conductor. An essentially continuous and concentric and uniform pulsed voltage surge shield overlaying the coat of base insulation material. The shield has therein an effective amount of a particulate material. The shield is superimposed on the coat of base insulation material, and has a continuous and concentric and flexible and uniform top coat of insulation material superimposed thereon.Type: GrantFiled: June 8, 1995Date of Patent: May 9, 2000Assignee: Phelps Dodge Industries, Inc.Inventors: Weijun Yin, Donald J. Barta
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Patent number: 6042943Abstract: The invention relates to a radiation curable primary coating composition for coating an optical fiber, composed of a component having a first end and a second end, a saturated aliphatic backbone, and at least one epoxide group at the first end of the component, and at least one reactive functional group at the second end; a mixture of acrylate monomers, composed of a first monomer having one acrylate group, and a second monomer having at least two acrylate groups; and a photoinitiator. The invention further relates to a radiation curable primary coating composition for coating an optical fiber, composed of a component having a first end and a second end, a saturated aliphatic backbone, and at least one epoxide group at the first end of the component, and at least one reactive functional group at the second end; a mixture of acrylate monomers, composed of a first monomer having one vinyl ether group, and a second monomer having at least two vinyl ether groups; and a photoinitiator.Type: GrantFiled: August 6, 1999Date of Patent: March 28, 2000Assignees: Alvin C. Levy & Associates, Inc., Master Adhesives, Inc.Inventor: Alvin C. Levy
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Patent number: 6043313Abstract: The present invention relates to a composite made by the process of melt mixing (a) a polymer having at least one isocyanate reactive group, wherein the polymer is from 30 to 90% by weight of the composite; (b) a thermoplastic polyurethane at from 0.1 to less than 10% by weight of the composite; and (c) a reinforcing fiber at from 9.9 to 60% by weight of the composite, wherein the sum of the weight percentages of components (a)-(c) is equal to 100%, wherein the polymer (a) is not a polyamide. The invention further relates to a composite prepared by the process of melt mixing (a) a polymer having at least one isocyanate reactive group, wherein the polymer is from 25 to 90% by weight of the composite; (b) a thermoplastic polyurethane at from 0.1 to 10% by weight of the composite; (c) a reinforcing fiber at from 9.8 to 60% by weight of the composite, and (d) an epoxy compound at from 0.1 to 5% by weight of the composite, wherein the sum of the weight percentages of components (a)-(d) is equal to 100%.Type: GrantFiled: August 26, 1998Date of Patent: March 28, 2000Assignee: Eastman Chemical CompanyInventors: Andrew E. Brink, Jeffrey T. Owens
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Patent number: 6028148Abstract: A silicone rubber composition comprises a silicone rubber and porous inorganic fine powders holding dimethyl-silicone oil.Type: GrantFiled: August 27, 1993Date of Patent: February 22, 2000Assignee: Canon Kabushiki KaishaInventor: Toshiyuki Miyabayashi
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Patent number: 6010788Abstract: A high speed data transmission cable comprises a pair of primary cables positioned adjacent to each other along their lengths with each primary cable including a pair of generally parallel conductors coupled together and surrounded by insulation. A shield layer surrounds each primary cable along its length to isolate the primary cables from each other. The primary cables and corresponding shield layers are twisted together around a center axis and form a double helical structure, thereby providing improved transmission characteristics in the high speed data transmission cable.Type: GrantFiled: December 16, 1997Date of Patent: January 4, 2000Assignee: Tensolite CompanyInventors: Matthew T. Kebabjian, Jerry J. Kulaga
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Patent number: 6007914Abstract: The present invention provides fibers and products produced therefrom, including nonwoven webs and adhesive articles. The fibers, which can be multilayer fibers, include a polydiorganosiloxane polyurea copolymer.Type: GrantFiled: December 1, 1997Date of Patent: December 28, 1999Assignee: 3M Innovative Properties CompanyInventors: Eugene G. Joseph, Ashish K. Khandpur, Audrey A. Sherman, Mieczyslaw H. Mazurek, Walter R. Romanko
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Patent number: 5998028Abstract: Disclosed is a novel thermoplastic article having metallic wire, rod and/or bar embedded therein produced by applying heat and pressure to a laminate comprising, in order, (1) an upper sheet material, (2) metallic wire, rods or bars, and (3) a lower sheet material to produce a thermoplastic article having metallic wire, rod and/or bar embedded therein. The upper and lower sheet materials are formed from a copolyester having an inherent viscosity of 0.5 to 1.2 dL/g, when measured at 25.degree.C. using 0.Type: GrantFiled: June 12, 1998Date of Patent: December 7, 1999Assignee: Eastman Chemical CompanyInventors: Michael Dennis Eckart, Raymond Lynn Goodson
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Patent number: 5998027Abstract: A flat electrical wire having a substantially rectangular cross-section is prepared from an electrical conductor having a circular cross-section, first by applying a benzimidazol-based polymer coat to the wire, then rolling the coated conductor to yield the flat wire. The flat wire thus prepared has a high heat resistance and dielectric breakdown resistance and can avoid dislocation or slippage when used in a magnet coil.Type: GrantFiled: February 28, 1997Date of Patent: December 7, 1999Assignee: Sumitomo Wiring Systems, Ltd.Inventors: Yasuhiko Onishi, Shinichi Matsumoto
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Patent number: 5985181Abstract: There is provided a semiconductive resin composition comprising the following components (A), (B), (D) and (E):(A) 5 to 100 parts by weight of a modified ethylene copolymer obtainable by subjecting an ethylene copolymer (a1) and a vinyl monomer (a2) to graft polymerization conditions,(B) 0.5 to 15 parts by weight of an unsaturated silane compound,(D) 10 to 110 parts by weight of carbon black, and(E) 0 to 95 parts by weight of an ethylene copolymer, provided that the amounts of the components shown above are based on 100 parts by weight in total of the components (A) and (E),wherein the component (B) is incorporated into the composition by subjecting the component (B) to melt graft reaction together with the component (A) and/or component (E) in the presence of 0.Type: GrantFiled: February 9, 1998Date of Patent: November 16, 1999Assignee: Mitsubishi Chemical CorporationInventors: Yoshie Yoshida, Toshikazu Mizutani, Masaki Kitagawa, Jichio Deguchi
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Patent number: 5981065Abstract: An article of manufacture comprising (i) a plurality of electrical conductors, each surrounded by one or more layers of a mixture comprising one or more polyolefins and the reaction product of (a) a functionalized hindered amine amic acid hydrazide and (b) a functionalized hindered phenol or a functionalized hindered amine hydrazide and (ii) hydrocarbon cable filler grease within the interstices between said surrounded conductors.Type: GrantFiled: May 26, 1992Date of Patent: November 9, 1999Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Michael John Keogh, Geoffrey David Brown
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Patent number: 5981630Abstract: Fiber additives for addition to proportioned concrete comprise a plurality of thermoplastic fibers having a profile geometry defined by the equation, ##EQU1## wherein the amplitude a.sub.0 falls within a range of from about 0.1 d.sub.f to 2.0 d.sub.f and the period .lambda. falls within a range of from about 2 d.sub.f to 15 d.sub.f for fibers having a diameter d.sub.f of from about 0.5 to about 1 mm; the peak pull-out stress .sigma..sub.peak and the specific pull-out energy absorbed to a maximal displacement of 7.5 mm .psi..sub.peak, both increase linearly with a deformity factor defined by the equation, ##EQU2## where .alpha.=0.8 and .beta.=-1, such that the peak pull-out stress is defined by the equation, ##EQU3## and the specific pull-out energy is defined by the equation, ##EQU4## the fiber additives having an optimimum deformity,D.sub.optimum .apprxeq.(0.5 to 1)D.sub.critical,D.sub.critical being that deformity where the ultimate tensile strength of the fiber equals k.sub.1 D.sub.Type: GrantFiled: January 14, 1998Date of Patent: November 9, 1999Assignee: Synthetic Industries, Inc.Inventors: Nemkumar Banthia, Richard E. Hingson, Ashish Dubey
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Patent number: 5965263Abstract: There is disclosed an insulated wire, having, on a conductor, an insulating coating including at least three layers, made up of an underlayer formed by applying and baking a polyamine-imide-series resin coating material, containing 0.05 to 1.0 parts by weight of a trialkylamine, and/or 5 to 20 parts by weight of an alkoxylated melamine resin, per 100 parts by weight of a polyamide-imide-series resin, an intermediate layer formed by applying and baking a polyimide-series resin coating material, and an overlayer formed by applying and baking a self-lubricating-type polyamide-imide-series resin coating material. According to the insulated wire, an insulating coating can be prevented from being damaged at the time of the working of a coil under severe conditions, even when the insulating coating is thin.Type: GrantFiled: December 22, 1997Date of Patent: October 12, 1999Assignees: The Furukawa Electric Co., Ltd., Denso CorporationInventors: Yoshinori Tatematsu, Atsushi Higashiura, Naruhiko Inayoshi, Hiromitsu Asai
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Patent number: 5958584Abstract: Provided is a radiation-curable, optical glass fiber coating composition containing at least one radiation-curable oligomer or monomer, and at least one chromophoric indicator selected so as to be susceptible to destruction of its chromophoric characteristic upon exposure to radiation and present in an amount which becomes substantially colorless when exposed to a level of radiation sufficient to cure said radiation-curable, optical glass fiber coating composition, wherein said at least one chromophoric indicator has a color which is distinguishable from a base color of said radiation-curable, optical glass fiber coating composition in cured form. The invention also provides a method of making the coating composition. The invention further provides a coated optical glass fiber and a method of making a coated optical glass on a fiber drawing tower. Also provided is a cable and telecommunications system.Type: GrantFiled: July 22, 1996Date of Patent: September 28, 1999Assignee: DSM NVInventor: James R. Petisce
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Patent number: 5958533Abstract: The problems caused by chemical and thermal shrinkage of hard roll covers, are reduced by the inclusion of one or more intermediate compressive layers between the metal roll substrate and the outer cover, or cover. A compressive layer has the properties of being rigid enough to allow the cover to be applied to the roll, and compressible enough to deform and absorb the stresses which occur as the cover is shrinking during processing.In one embodiment, the intermediate compressive layer comprises a three dimensional fabric that is filled preferably with a thermoset resin system which cures at lower temperature than cover. In a second embodiment, the precise amount of shrinkage in the roll is predetermined to a high enough degree of accuracy so that a depth for the fabric layer can be used to compensate for the amount of shrinkage, thereby eliminating the need for filling. In a third embodiment, the compressive layer is comprised of a meltable material wherein said material melts at cure temperatures.Type: GrantFiled: August 23, 1996Date of Patent: September 28, 1999Assignee: Stowe Woodward CompanyInventors: Jan Anders Paasonen, Seppo Antti Ylisela
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Patent number: 5935707Abstract: A push-pull cable (1, 6), in particular, for the purpose of actuating bicycle brakes. It has a guide hose (2, 7) and an actuation core (3, 8) that can be moved therein axially. The guide hose (2, 7) has an inside hose (4, 9) and a jacket hose (5, 10) that surrounds the latter. The inside hose (4, 9) consists at least mostly of a polymerized tetrafluoroethylene, while the jacket hose consists at least mostly of a polyarylate, polyacrylimide, polyetherimide, polysulfone, polyphenylenesulfide, polyetherketone and/or liquid-crystalline polymer and/or a synthetic substance whose rigidity and firmness are within the range of rigidity and firmness of the above-mentioned synthetic substances.Type: GrantFiled: March 28, 1997Date of Patent: August 10, 1999Inventor: Holger Heuser
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Patent number: 5933559Abstract: A radiation-curable, cross-linked ribbon matrix material is suitable for covering an array of coated optical glass fibers. The matrix material contains at least one radiation-curable oligomer or monomer, and at least one chromophoric indicator selected so as to be susceptible to destruction of its chromophoric characteristic upon exposure to radiation and present in an amount which becomes substantially colorless when exposed to a level of radiation sufficient to cure the radiation-curable matrix material, wherein the at least one chromophoric indicator has a color that is distinguishable from a base color of the radiation-curable, optical glass fiber coating composition in cured form. A cable structure and a telecommunications system are also described.Type: GrantFiled: January 22, 1998Date of Patent: August 3, 1999Assignee: DSM N.V.Inventor: James R. Petisce
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Patent number: 5924250Abstract: A sealing arrangement for closing off the areas to be filled with a casting compound of a tension member composed of a bundle of individual elements arranged within a tubular sheathing, for example, a stay cable of a cable-stayed bridge, includes a sealing plug composed of a first sealing layer of a deformable, non-flowable sealing material introduced between the individual elements, a second sealing layer of a setting or hardenable material introduced in a flowable state and arranged adjacent the first sealing layer in the direction toward the area to be filled out with casting compound.Type: GrantFiled: August 14, 1997Date of Patent: July 20, 1999Assignee: Dyckerhoff & Widmann AktiengesellschaftInventors: Dieter Jungwirth, Oswald Nutzel
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Patent number: 5910365Abstract: A self-extinguishing cable releasing low quantities of toxic and corrosive smokes and gases for optical or electrical applications, comprises a self-extinguishing coating (3), releasing low quantities of toxic and corrosive fumes and gases, comprising:a) a polymer base including from 30 to 60 parts of a thermoplastic polyester and from 40 to 70 parts of a silicone-polyimide polymer;b) at least 0.5 parts of an anti-hydrolysis agent of the thermoplastic polyester and at least 0.25 parts of a selected antioxidant agent per each 100 parts by weight of the polymer base.Advantageously, the antioxidant agent is so selected that the coating (3) has a value of percent elongation at break not lower than 80% of the starting value and in any case not lower than 250%, after a 10-day aging at 175.degree. C. in a hot air oven.Type: GrantFiled: July 24, 1997Date of Patent: June 8, 1999Assignee: Pirelli Cavi S.P.A.Inventor: Luca Castellani
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Patent number: 5902681Abstract: An insulated wire having as components a conductor, a first insulating layer on the conductor, and a second insulating layer which comprises a coating resin having a glass transition temperature of between 100 and 250.degree. C. after baking and a lubricant and has a thickness of 0.005 mm or less, which has good lubricity and resistance to processing.Type: GrantFiled: November 8, 1996Date of Patent: May 11, 1999Assignee: Sumitomo Electric Industries, Ltd.Inventors: Isao Ueoka, Akira Mizoguchi, Kazuhiro Matumura, Yuki Taguchi, Toshiaki Shishino
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Patent number: 5874133Abstract: An article which comprises (1) a composite comprising a polyurethane matrix including fibrous or particulate reinforcement, the polyurethane matrix being formed in situ about the reinforcement by reaction of polyurethane forming components at a temperature below the melting point of the reinforcement and (2) a polymeric film bound to at least one surface of the composite, the film being bound to the composite by adhesion to the polyurethane matrix which emerges or is enhanced as the matrix is formed in situ.Type: GrantFiled: June 7, 1995Date of Patent: February 23, 1999Assignee: RanDemo, Inc.Inventor: William H. Cochran
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Patent number: 5851666Abstract: A process for producing a preform for elastic optical fiber having a refractive index distribution in which the refractive index is gradually decreased from the center of the preform toward the outer periphery thereof, by depositing a deposition layer comprising a polymer A (refractive index: N.sub.a) and a refractive index modifier having a refractive index different from that of the polymer A onto an inner surface of a hollow cylindrical member rotating about an axis thereof, by use of vapor-phase deposition based on a CVD (Chemical Vapor Deposition) process, or a coating process. A plastic optical fiber preform comprising deposition layers having a gradually increasing refractive index distribution is formed by changing the mixing ratio between the polymer A and the refractive index modifier constituting the deposition layer.Type: GrantFiled: January 2, 1997Date of Patent: December 22, 1998Assignee: Sumitomo Electric Industries, Ltd.Inventors: Tsuyoshi Nonaka, Toshifumi Hosoya, Yuji Kobayashi, Yasuo Matsuda
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Patent number: 5814403Abstract: A computer model calculates a critical aspect ratio for a discontinuous fiber composite having fibers dispersed in a matrix. The critical aspect ratio is a function of the elastic modulus and the cohesive energy of the fiber and the matrix. The composite incorporates physical features such as fiber shape features or additives in the fiber or matrix which adjust the elastic modulus and/or cohesive energy of the fiber, of the matrix or both to a value different than the corresponding value for unmodified fiber material or matrix material. These adjustments are selected so that the critical aspect ratio for the material including the modifications will be less than the corresponding critical aspect ratio for the material without the modifications. The resulting composite provides enhanced load sharing between fiber and matrix.Type: GrantFiled: January 28, 1993Date of Patent: September 29, 1998Assignee: Exxon Research and Engineering CompanyInventors: Michael P. Anderson, Liza M. Monette, John P. Dismukes, Shiun Ling, David J. Srolovitz
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Patent number: 5814406Abstract: A communication cable includes a plurality of twisted pairs of electrical conductors, all electrical conductors being surrounded by a layer of a modified olefin based material.Type: GrantFiled: August 13, 1997Date of Patent: September 29, 1998Assignee: Alcatel NA Cable Systems, Inc.Inventor: Kerry Newmoyer
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Patent number: 5807635Abstract: A cable construction comprises the following components: (i) a plurality of insulated electrical conductors having interstices therebetween, said insulation comprising (a) one or more polyolefins selected from the group consisting of polyethylene, polypropylene, and mixtures thereof, and, blended therewith, (b) a mixture containing one or more alkylhydroxy-phenylalkanoyl hydrazines and one or two functionalized hindered amines; (ii) hydrocarbon cable filler grease within the interstices; and (iii) a sheath surrounding components (i) and (ii) wherein said hindered amines have the following structural formulae: ##STR1## wherein n is about 2 to about 12; R is CxHyOz wherein x is about 2 to about 6, y is about 4 to about 16, and z is zero to about 3; ##STR2## wherein m is about 2 to about 30; n is about 2 to about 30; and x is about 1 to about 30; or ##STR3## wherein n is about 2 to about 20.Type: GrantFiled: January 24, 1997Date of Patent: September 15, 1998Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Jeffrey Morris Cogen, Michael John Keogh, Geoffrey David Brown
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Patent number: 5807634Abstract: A method for improving the adhesion of alkylated chlorosulfonated polyethylene (ACSM) and chlorosulfonated polyethylene (CSM) rubber compounds to a resorcinol-formaldehyde latex (RFL) treated polyester reinforcing element using lower than conventional heat set temperatures comprising dipping the element into a RFL dip comprising chlorosulfonated polyethylene; drying the element; heat setting the element at a temperature in the range from about 300.degree. F. to about 425.degree. F. under tension; incorporating the element into the rubber compounds; and curing the element and the rubber compounds. Further, adding an amine functional polyacrylate to the RFL dip prevents failure of the adhesion of the cord at start up temperatures of about -40.degree. F.Type: GrantFiled: May 14, 1997Date of Patent: September 15, 1998Assignee: Dayco Products, Inc.Inventor: Daniel A. Pelton
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Patent number: 5804309Abstract: A charging roll which is held in contact with an outer circumferential surface of an image bearing medium for charging the surface of the image bearing medium by application of a DC voltage and an AC voltage which is superimposed on the DC voltage, the charging roll comprising: a center shaft; an electrically conductive base layer formed on an outer circumferential surface of the shaft; an outer structure formed on an outer circumferential surface of the conductive base layer; and the charging roll having Asker C hardness of less than 48 degrees as measured upon application of 1 kg load thereto and micro rubber hardness in a range of 65-85 degrees as measured upon application of 33.85 g load thereto.Type: GrantFiled: March 18, 1997Date of Patent: September 8, 1998Assignee: Tokai Rubber Industries, Ltd.Inventors: Tetsuya Itoh, Takafumi Yamamoto, Hiroki Sugiura, Atsuhiro Kawano, Wataru Imamura, Saburou Hayashi