Tire Cord Reinforcement Materials, Per Se Patents (Class 152/451)
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Publication number: 20100065178Abstract: A pneumatic tire includes a carcass reinforced by a carcass ply, at least one belt ply disposed radially outward of the carcass ply in a crown portion of the pneumatic tire, and at least one insert located adjacent the carcass ply in a sidewall portion of the carcass. The insert provides support for the tire load to enable the pneumatic tire to operate under extreme conditions. The carcass ply comprises at least one composite cord having a first core yarn with a second outer yarn and an outer metallic filament both wrapped around the first core yarn such that the first core yarn has a modulus less than a combined modulus of the second outer yarn and the outer metallic filament.Type: ApplicationFiled: September 15, 2008Publication date: March 18, 2010Inventors: Serge Julien Auguste Imhoff, Yves Donckels
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Publication number: 20100059155Abstract: A light weight pneumatic tire in accordance with the present invention includes a pair of parallel annular beads, a carcass ply comprising a polyvinyl alcohol crosslinked raw cord, a belt reinforcement structure disposed radially outward of the carcass ply in a crown area of the tire, a tread disposed radially outward of the belt reinforcement structure, and a pair of sidewalls disposed between the tread and the pair of beads. The polyvinyl alcohol crosslinked raw cord has a weight in the range of 1500 dtex to 2500 dtex.Type: ApplicationFiled: September 9, 2008Publication date: March 11, 2010Inventors: Walter Kevin Westgate, Derek Shuttleworth
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Publication number: 20100059158Abstract: A tire for vehicle wheel includes at least one elastomeric component including a crosslinked elastomeric material obtained by crosslinking an elastomeric composition including at least one diene elastomeric polymer; at least one sulfur-based vulcanizing agent, and at least one adhesion promoting agent having formula HOOC—R—S—R?—COOH wherein each of R and R?, equal or different from each other, is a divalent organic group. In a preferred embodiment of the first aspect of the present invention, the elastomeric component includes a metal reinforcing agent embedded therein.Type: ApplicationFiled: October 30, 2006Publication date: March 11, 2010Inventors: Francesca Baione, Fabrizia Sala, Stefano Tresoldi
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Publication number: 20100038006Abstract: A tire for a two-wheeled vehicle in which cornering controllability (cornering performance) is improved without impairing various performances of the tire such as straight-ahead driving performance, high-speed ability, ride comfort, and uniformity is provided. It is a tire for a two-wheeled vehicle including a tread portion 11, side wall portions 12 disposed radially inside the tire from both edges thereof, bead portions 31 continuing radially inside the tire, a carcass layer 22 for reinforcing these portions between bead cores 21 embedded in the bead portions, and a spiral belt 23 formed outside the carcass layer in the radial direction of the tire by spirally wound so as to extend substantially in parallel to the circumferential direction of the tire.Type: ApplicationFiled: March 17, 2008Publication date: February 18, 2010Applicant: BRIDGESTONE CORPORATIONInventor: Kiyoshi Ikehara
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Publication number: 20100000645Abstract: A steel cord which has no production problem noted in the related art and which can be produced efficiently with stable quality, particularly a steel cord useful for the purpose of reinforcing a tire crown portion, as well as a composite of rubber and steel cord and a tire, which include the steel cord, are provided. A steel cord has a multi-twist structure in which N (N=2 to 8) strands 2 are twisted, each strand 2 being formed by twisting a plurality of element wires 1 and having a substantially elliptical cross-section, wherein d1/d2>1.08 is satisfied, where the major diameter of the strand 2 is represented by d1 and the minor diameter is represented by d2, and ?c defined by the following equation: ?c=?{square root over ( )}(?b/2+?{square root over ( )}(b2/4?c))?1 (in the equation, b represents ?1+?2(?4R2+d2)/P2, c represents ?2d2k(4?2R2+P2)/P4, R represents (D?d)/2, k represents tan2(?/2??/N), and d represents (d1+d2)/2) satisfies ?c>0.Type: ApplicationFiled: August 23, 2007Publication date: January 7, 2010Applicant: BRIDGESTONE CORPORATIONInventor: Kiyoshi Ikehara
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Publication number: 20090288748Abstract: The present invention provides a lyocell raw cord prepared from at least 2-ply lyocell multifilaments, which gives a stress-strain curve exhibiting that (a) the lyocell raw cord has an elongation of 1.5% or less at an initial stress of 1.0 g/d, and an initial modulus value of 50 to 100 g/d; (b) has an elongation of 7% or less in a stress region of 1.0 g/d to 4.0 g/d; and (c) has an elongation of 1% or more at a tensile strength of 4.0 g/d to the breaking point, as measured in the dried state. The lyocell raw cord prepared according to the present invention can be used as industrial fibers, in particular, fibers for tire cords.Type: ApplicationFiled: August 3, 2009Publication date: November 26, 2009Applicant: HYOSUNG CORPORATIONInventors: Seok-Jong Han, Soo-Myung Choi, Young-Soo Wang, Sung-Ryong Kim, Tae-Jung Lee
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Publication number: 20090288747Abstract: A rubber-cord complex having an improved wet heat adhesive property between a rubber and a cord comprising a drawn plated wire, and including a metal cord comprising a drawn plated wire prepared by providing a brass plated layer on the surface of an element wire and drawing the resulting plated wire, and a rubber vulcanized and bonded to the cord, wherein in a wet heat deterioration state of the drawn plated wire after being subjected to the vulcanization to bond the rubber thereto and further held under an atmosphere having a temperature of 50 to 100° C. and a humidity of 60 to 100% for one hour to 20 days, the average grain size of crystal grains present in the brass plated layer is not more than 50 nm, and the grain boundary of the crystal grains has a fractal dimension of 1.001 to 1.500.Type: ApplicationFiled: November 30, 2006Publication date: November 26, 2009Applicants: Sumitomo Rubber Industriesm, Ltd., Nippon Steel Corporation, Sumitomo (SEI) Steel Wire Corp.Inventors: Shinichi Miyazaki, Junichi Kodama, Yasuo Sakai, Keisuke Aramaki, Yuichi Sano, Kenichi Okamoto
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Publication number: 20090266462Abstract: A pneumatic tire for a motorcycle, wherein the tire is optimized in the ground contact shape and the ground contact pressure distribution during high-speed running to achieve excellent driving stability, is provided. Furthermore, a pneumatic tire for a motorcycle, wherein the tire is optimized in the ground contact shape and the ground contact pressure distribution during high-speed running to realize excellent gripping force to stabilize the behavior of the tire near its cornering limit and excellent cornering ability, is provided. Provided is a pneumatic tire for a motorcycle, which employs a multifilament-twist polyketone fiber cord, as a reinforcing material, having a total dtex value of 1000 to 20000 dtex per cord and satisfying the relationships represented by the following Expressions (I) and (II): ???0.01E+1.2??(I) ??0.02??(II) (wherein, E is an elastic modulus (cN/dtex) at 25° C. under a load of 49 N, and ? is a heat shrinkage stress (cN/dtex) at 177° C.).Type: ApplicationFiled: November 29, 2006Publication date: October 29, 2009Applicant: BRIDGESTONE CORPORATIONInventors: Masahiko Yamamoto, Hidenobu Akahane
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Publication number: 20090250151Abstract: A tire including at least one structural element includes a crosslinked elastomeric material obtained by crosslinking a crosslinkable elastomeric composition including: (a) 100 phr of at least one elastomeric polymer; (b) 0.1 phr to 15 phr, preferably 0.3 phr to 10 phr, of at least one methylene donor compound: c) 0.4 phr to 20 phr, preferably 0.8 phr to 15 phr of at least one methylene acceptor compound; (d) 1 phr to 50 phr, preferably 2 phr to 40 phr, more preferably 4 phr to 30 phr, of at least one layered material, the at least one layered material having an individual layer thickness of 0.2 nm to 30 nm, preferably 0.3 nm to 15 nm, more preferably 0.Type: ApplicationFiled: July 20, 2006Publication date: October 8, 2009Inventors: Maurizio Galimberti, Gaetano Guerra, Angela Lostritto, Luca Giannini
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Patent number: 7597128Abstract: A rubberized fiber material is used in a belt reinforcing layer of a pneumatic tire, and comprises polyketone fibers having substantially a repeat unit represented by the following formula (I): (wherein A is a moiety derived from an ethylenically unsaturated compound polymerized through ethylenic linkage, and may be same or different in repeat units) and a coating rubber covering the fibers, in which the coating rubber has a modulus at 100% elongation (room temperature) of not less than 2.5 MPa but not more than 5.5 MPa and a rebound resilience of not less than 60%. Also, a pneumatic tire comprises a belt reinforcing layer made from the rubberized fiber material.Type: GrantFiled: March 22, 2004Date of Patent: October 6, 2009Assignee: Bridgestone CorporationInventor: Mamoru Takimura
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Patent number: 7594380Abstract: A hybrid layered cable for use in tire reinforcement includes a non-metallic internal layer and an unsaturated external layer including 3-12 strands. Each strand is at least partly metallic and is helically wound around the internal layer. Each strand includes at least 3 filaments wound helically together. The cable has a relative elongation at break, measured in tension in accordance with the standard ISO 6892 of 1984, which is higher than 7%.Type: GrantFiled: December 27, 2004Date of Patent: September 29, 2009Assignee: Michelin Recherche et Technique S.A.Inventors: Henri Barguet, Le Tu Anh Vo, Thibaud Pottier, Laurence Ducourant
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Publication number: 20090229724Abstract: Organofunctional silanes are applied to metal surfaces using an oil bath. Metal is immersed in an oil bath containing approximately 2% silane and an oil dispersible hygroscopic liquid, such as glycerol. In one embodiment, the metal is a tire cord. Water vapor entrained in a carrier gas can also be bubbled into the oil silane bath.Type: ApplicationFiled: March 14, 2008Publication date: September 17, 2009Inventor: Michael Hill
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Patent number: 7562684Abstract: The durability is improved by using as a carcass ply cord or a belt cord of a tire a cord formed by twisting plural steel filaments having a tensile strength of not less than 2700 N/mm2, and a total elongation at break of the cord of 3.0-7.0% without sacrificing the excellent ride comfort.Type: GrantFiled: July 8, 2005Date of Patent: July 21, 2009Assignee: Bridgestone CorporationInventor: Sumito Nakagawa
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Publication number: 20090165913Abstract: Amino alkoxy-modified silsesquioxanes (amino AMS), and/or amino co-AMS compounds that also comprise a mercaptosilane or a blocked mercaptosilane, are excellent adhesives for coating plated or unplated metal wire for adherence of the wire to a rubber stock. The amino AMS and/or the amino/mercaptan co-AMS adhesives can be used with all types of rubber and there is no requirement for the use of special adhesive additives to the rubber vulcanizates, such as, but not limited to, cobalt, resins and high sulfur levels. In particular, the use of amino AMS and/or amino/mercaptan co-AMS compounds as adhesives for bonding wire to rubber also improves the adherence performance of the reinforcements to obtain sufficient bonding that is resistant to degradation over the course of time, especially resistance to thermal aging and/or thermo-oxidizing aging, in particular corrosion in the presence of water.Type: ApplicationFiled: December 31, 2008Publication date: July 2, 2009Inventors: William L. Hergenrother, Walter Tomaszewski, Ashley Hilton, Michael Hayes, James H. Pawlow, Terrence E. Hogan
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Patent number: 7552753Abstract: A tire for a vehicle wheel includes at least one metallic reinforcing cord comprising a single strand of elementary filaments preformed by sinusoidal waving and wound together. The number of filaments is greater than or equal to 3 and less than or equal to 8. A diameter of each filament is greater than or equal to 0.12 mm and less than or equal to 0.35 mm. A linear density of the at least one reinforcing cord is greater than or equal to 0.18 g/m and less than or equal to 4.0 g/m. A value of a breaking-stress integral of the at least one reinforcing cord is greater than or equal to 5,000 J/m3. In a two-wheeled vehicle, the at least one reinforcing cord in a tire for front-mounting may be distributed with a variable density while, in a tire for rear-mounting, the density may be constant.Type: GrantFiled: December 14, 2001Date of Patent: June 30, 2009Assignee: Pirelli Pneumatici S.p.A.Inventors: Giancarlo Armellin, Guido Riva
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Publication number: 20090159171Abstract: A cord for reinforcing tires, comprising a core of at least one p-aramid filament that has a modulus greater than about 6.5 N/dTex and a sheath of steel strands that are helically wound around the p-aramid filament.Type: ApplicationFiled: December 4, 2008Publication date: June 25, 2009Inventor: ALESSANDRO VOLPI
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Publication number: 20090151839Abstract: A rubber composition for adhering a steel cord that improves wet heat-resistant adhesioness, particularly heat-resistant adhesioness, by preventing adhesion deterioration due to heat, as well as initial adhesioness between a steel cord and a rubber, is disclosed. The rubber composition comprising 100 parts by weight of a diene rubber component and from 0.1 to 30 parts by weight of composite graphite particles containing boron, obtained by heating and graphitizing carbon black together with boron or a compound containing boron.Type: ApplicationFiled: November 6, 2008Publication date: June 18, 2009Applicants: Toyo Tire & Rubber Co., Ltd., Nippon Steel Chemical Carbon Co., Ltd.Inventors: Takashi Miyasaka, Takashi Yuri, Hiroaki Narita, Hirofumi Hayashi, Yoichi Kawano
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Publication number: 20090151838Abstract: This invention relates to a tire having an internal component comprised of a cord reinforced polyisoprene-based rubber composition containing silica reinforcement. Such cord reinforced rubber internal tire component may be, for example, at least one of a tire carcass ply, circumferential overlay ply and circumferential belt ply underlying its tread.Type: ApplicationFiled: December 17, 2007Publication date: June 18, 2009Inventors: Erik Paul Sandstrom, Paul Harry Sandstrom, Jeremy Elton Miracle, Warren James Busch
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Publication number: 20090090447Abstract: A composite cable is disclosed suitable for use as a reinforcement in an aircraft tire. The cable is formed of an aramid yarn and a nylon yarn cabled together, wherein the aramid yarn has a linear density in the range of about 220 to about 3300 dtex, and the nylon yarn has a linear density in the range of about 220 to about 2100 dtex.Type: ApplicationFiled: August 28, 2008Publication date: April 9, 2009Inventors: Donald William Baldwin, JR., Robert John Gartland, Walter Kevin Westgate
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Publication number: 20090056849Abstract: The present invention relates to a polyester cord for reinforcement of rubber where heat-resistant adhesive property when exposed to high temperature for long time in a state of being embedded in a rubber composition or under a high-temperature atmosphere is significantly improved, stiffness of the cord is made soft to such a level which is no problem in terms of practical use in view of anti-fatigue property and also of molding and processing property of the rubber-reinforced product and a high elastic modulus is available; and a method for manufacturing the same.Type: ApplicationFiled: March 1, 2006Publication date: March 5, 2009Applicant: TOYO BOSEKI KABUSHIKI KAISHAInventors: Katsutoshi Imaoka, Masanao Kohashi
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Publication number: 20090044893Abstract: The present invention is directed to a pneumatic tire comprising at least one component, the at least one component comprising a rubber composition contacting one or more reinforcing polyester cords, the polyester cords comprising an RFL adhesive disposed on the surface of the polyester cords, the RFL adhesive comprising from 1 to 20 weight percent of a presilanized silica.Type: ApplicationFiled: August 14, 2007Publication date: February 19, 2009Inventors: Ralf Mruk, Andreas Frantzen, Frank Schmitz, Wolfgang Albert Leo Loesslein, Serge Julien Auguste Imhoff, Georges Marcel Victor Thielen, Yves Donckels
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Patent number: 7484545Abstract: A pneumatic tire for use on aircraft has a tread, a crown reinforcement, and a radial carcass reinforcement having at least one axially inner ply of textile cords wound around a pair of bead cores, at least one axially inner ply being wound around the bead core in each bead from inside to the outside forming outside turn-ups and at least one axially outer ply of textile cords extending from bead to bead along the turn-ups of the at least one axially inner ply. The at least one axially inner ply or at least one axially outer ply has merged cords having a percent elongation at break of 12% to less than 20% and a break strength greater than 1050 N with a linear density of greater than 9,000 dtex. Merged cord reinforcement is preferably used in the ply layers or strips of the crown reinforcement as well.Type: GrantFiled: December 20, 2005Date of Patent: February 3, 2009Assignee: The Goodyear Tire & Rubber Co.Inventors: Walter Kevin Westgate, Yuvaraj Senthil Arumugam, Robert John Gartland
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Publication number: 20090025846Abstract: A rubber-cord complex 9 having an improved wet heat adhesive property between a rubber and a cord comprising a drawn plated wire, and including a cord 10 comprising a drawn plated wire 17 prepared by providing a brass plated layer 16E on the surface of an element wire 15 and drawing the resulting plated wire, and a rubber 12 vulcanized and bonded to the cord 10, wherein the rubber-cord complex 9 has an adhesion reaction layer 25 formed by a cross-linking reaction of sulfur and copper, between the rubber 12 and the brass plated layer 16E, and in a wet heat deterioration state after being subjected to the vulcanization to bond the rubber 12 thereto and further held under an atmosphere having a temperature of 50 to 100° C. and a humidity of 60 to 100% for one hour to 20 days, the adhesion reaction layer 25 has an average thickness of 50 to 1,000 nm, and the interface S between the adhesion reaction layer 25 and the rubber has a fractal dimension of 1.001 to 1.300.Type: ApplicationFiled: November 30, 2006Publication date: January 29, 2009Applicants: Sumitomo Rubber Industries, Ltd., Nippon Steel Corporation, Sumitomo (SEI) Steel Wire Corp.Inventors: Shinichi Miyazaki, Junichi Kodama, Yasuo Sakai, Keisuke Aramaki, Yuichi Sano, Kenichi Okamoto
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Publication number: 20090022990Abstract: [Object]To prepare a polyester fiber and fiber cord having an excellent heat resistance which does not generate thermal melting at high temperature while properties such as dimensional stability, high strength and durability are maintained. To provide a material which is useful as a belt for tire and a carcass material. [Means to Solve]A polyester fiber and fiber cord comprising a copolymerized polyester is impregnated with a compound having at least two unsaturated bonds, and is irradiated with electronic ray or ?-ray, whereby the compound causes a cross-linking reaction in the inner area and surface layer of the polyester fiber and fiber cord, which results in a fiber and fiber cord having an excellent heat resistance.Type: ApplicationFiled: April 26, 2006Publication date: January 22, 2009Applicant: TOYO BOSEKI KABUSHIKI KAISHAInventors: Shigenori Nagahara, Kenji Yoshino, Satoshi Imahashi, Noriko Takahashi
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Publication number: 20090000717Abstract: A steel cord that is especially useful for reinforcing a crown portion of a tire is provided. In particular, a steel cord free from manufacturing problems existed in the conventional art and allowing for stable quality and good production efficiency is provided, and a rubber-steel cord composite and a tire that are equipped with the same are provided. A steel cord has a multiple-twist structure including N (N=2 to 8) strands 2 that are twisted together, each strand 2 having a plurality of wires 1 that are twisted together. When the diameter of each strand is denoted by d (mm), the diameter of a circle circumscribing the cord is denoted by D (mm), and the twisting pitch of the cord is denoted by P (mm), ?c defined by the following expression, ?c=?(?b/2+?(b2/4?c))?1 (where b denotes ?1+?2(?4R2+d2)/P2, c denotes ?2d2k(4?2R2+P2)/P4, R denotes (D?d)/2, and k denotes tan2(?/2??/N)), satisfies ?c?0.005.Type: ApplicationFiled: February 7, 2007Publication date: January 1, 2009Applicant: BRIDGESTONE CORPORATIONInventor: Kiyoshi Ikehara
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Patent number: 7441573Abstract: The present invention relates to a pneumatic tire having a component including at least one diene based rubber and discontinuous textile cord having at least two textile yarns, wherein the cord is partially untwisted.Type: GrantFiled: November 7, 2005Date of Patent: October 28, 2008Assignee: The Goodyear Tire & Rubber CompanyInventors: Carlo Kanz, René François Reuter
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Publication number: 20080223015Abstract: A rubber product-reinforcing metallic cord is provided which comprises three to five metallic filaments, which shows a high degree of penetration of rubber without reducing compressive rigidity, and which can be manufactured at low facility and production costs. A rubber product-reinforcing metallic cord 7 is formed by twisting together a pre-strand 6 comprising a first metallic filament 1 and a second metallic filament 2 helically wrapped around the first filament 1, and a fifth metallic filament 3 (or 5) with a twist pitch P. The metallic cord 7 may be formed by twisting together two of such pre-strands, or by twisting together two of such pre-strands and the fifth metallic filament.Type: ApplicationFiled: April 7, 2005Publication date: September 18, 2008Inventors: Kenichi Okamoto, Yasuo Sakai, Kazuhiko Saito
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Publication number: 20080178980Abstract: A tire comprising at least one reinforcement structure of the carcass type anchored on either side of the tire in a bead, the base of which bead is intended to be mounted on a rim seat, the reinforcement structure extending circumferentially from the bead towards the sidewall, at least one arrangement of main cords along a substantially circumferential path being arranged substantially adjacent to the structure, the arrangement of the cords of the at least one arrangement being such that the number of main cords arranged on the axially inner side relative to the structure is greater than the number of main cords arranged on the axially outer side relative to the structure.Type: ApplicationFiled: March 12, 2008Publication date: July 31, 2008Applicant: MICHELIN RECHERCHE ET TECHNIQUIE S.A.Inventors: Pedro Costa Pereira, Bernard Guerinon
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Patent number: 7380579Abstract: The present invention relates to a metal cable usable for reinforcing a carcass reinforcement for a tire, such as a heavy-vehicle tire, to a composite fabric usable as a ply for such a carcass reinforcement, to a carcass reinforcement comprising this fabric and to a tire incorporating this carcass reinforcement. A metal cable according to the invention comprises a textile wrap, and is such that said wrap is formed of an aromatic thermotropic polyester or polyester amide. A composite fabric according to the invention is such that it comprises a rubber composition which is reinforced by said cables. A tire according to the invention has its carcass reinforcement comprising said composite fabric.Type: GrantFiled: May 21, 2004Date of Patent: June 3, 2008Assignee: Michelin Recherche et Technique S.A.Inventors: Philippe Esnault, Le Tu Anh Vo
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Publication number: 20080121327Abstract: A polyester fiber cord for reinforcing rubber, characterized in that it is a polyester fiber cord for reinforcing rubber having inner and outer adhesive layers and the inner layer portion of said adhesive layers consists of a resin layer containing a gas barrier resin of which oxygen permeation rate measured under condition of humidity of 50% RH is 10 cc·20 ?m/m2·day·atm or less, and the outer layer portion of said adhesive resin layers consists of a resin layer of which main components are an early condensate of resorcin.formaldehyde and a rubber latex, respectively.Type: ApplicationFiled: January 23, 2006Publication date: May 29, 2008Inventors: Masato Matsumura, Takao Manabe, Jun Tonomura
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Patent number: 7316254Abstract: A pneumatic tire comprises a cord-reinforced layer such as carcass, belt, bead reinforcing layer which is made of metallic cords, each metallic cord is made up of six to twelve metallic filaments whose diameter is in a range of from 0.15 to 0.45 mm, the metallic filaments include waved filaments and unwaved filaments, each waved filament is two-dimensionally waved at a wave pitch and wave height before twisted, the wave pitch is in a range of from 5.0 to 35.0 times the diameter of the filament, and the wave height is in a range of from 0.2 to 4.0 times the diameter of the filament, and the metallic filaments are twisted together into the cord at a twist pitch of from 10 to 40 mm so that the two-dimensionally waved filaments are each subjected to a certain rotation around its axial.Type: GrantFiled: February 9, 2006Date of Patent: January 8, 2008Assignees: Sumitomo Rubber Industries, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Shinichi Miyazaki, Kazumi Yamazaki, Osamu Toda, Yasuo Sakai
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Patent number: 7308923Abstract: It is an object of the present invention to provide a hybrid dip cord consisting of rayon yarn and lyocell yarn to apply to the carcass ply or cap ply (belt reinforced layer) of pneumatic radial tire used in a car and a radial tire using the same. And also, according to the present invent the hybrid dip cord and the radial tire for application to the carcass ply or cap ply (belt reinforced layer) of pneumatic radial tire used in cars are produced by means of the following steps; imparting S direction twist of 20 to 200 TPM yarn number to one rayon yarn to produce a pre-yarn, imparting twist to said one rayon pre-yarn and one non-twisted lyocell respectively to produce a ply twist yarn, and imparting cable twist to two ply of ply twist yarn made from combination of said ply twist yarn or impart cable twist to a ply twist yarn to be produced by regulating low the twist number of one lyocell yarn and the rayon yarn to one lyocell as 20 to 200 TPM when the ply twist processes.Type: GrantFiled: August 4, 2005Date of Patent: December 18, 2007Assignee: Hyosung CorporationInventors: Ik-Hyun Kwon, Soo-Myung Choi, Yun-Hyuk Bang, Si-Hwan Joo
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Publication number: 20070251623Abstract: The present invention provides a lyocell raw cord prepared from at least 2-ply lyocell multifilaments, which gives a stress-strain curve exhibiting that (a) the lyocell raw cord has an elongation of 1.5% or less at an initial stress of 1.0 g/d, and an initial modulus value of 50 to 100 g/d; (b) has an elongation of 7% or less in a stress region of 1.0 g/d to 4.0 g/d; and (c) has an elongation of 1% or more at a tensile strength of 4.0 g/d to the breaking point, as measured in the dried state. The lyocell raw cord prepared according to the present invention can be used as industrial fibers, in particular, fibers for tire cords.Type: ApplicationFiled: October 4, 2006Publication date: November 1, 2007Applicant: HYOSUNG CorporationInventors: Seok-Jong Han, Soo-Myung Choi, Young-Soo Wang, Sung-Ryong Kim, Tae-Jung Lee
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Publication number: 20070251624Abstract: The present invention provides a lyocell dipped cord prepared by dipping a lyocell raw cord comprising at least 2-ply lyocell multifilament in a dipping solution and curing the dipped cord, which gives a stress-strain curve exhibiting that (a) the lyocell dipped cord has an elongation of 1.2% or less at an initial stress of 1.0 g/d, and an initial modulus value of 80 to 200 g/d; (b) has an elongation of 6% or less in a stress region of 1.0 g/d to 4.0 g/d; and (c) has an elongation of 1% or more at a tensile strength of 4.0 g/d to the breaking point, as measured in the dried state. The lyocell dipped cord prepared according to the present invention can be used as industrial fibers, in particular, fibers for tire cords.Type: ApplicationFiled: October 5, 2006Publication date: November 1, 2007Applicant: HYOSUNG CorporationInventors: Seok-Jong Han, Soo-Myung Choi, Young-Soo Wang, Sung-Ryong Kim, Tae-Jung Lee
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Patent number: 7284583Abstract: This invention relates to a pneumatic rubber tire which contains at least one electrically conductive cord extending from an external outer surface of its wheel-rim mounting surface rubber component to an internal electrically conductive tread base layer rubber component to provide a path of least electrical resistance, namely an electrically conductive path, between the outer tire wheel-rim mounting surface and the internal tire tread base layer. The electrically conductive cord is comprised of at least one electrically conductive metal filament (e.g. metal filament, carbon fiber or combination of metal filament and carbon fiber) spirally wound around a centrally disposed core of at least one organic fiber.Type: GrantFiled: June 14, 2005Date of Patent: October 23, 2007Assignee: The Goodyear Tire & Rubber CompanyInventors: Jean Luc Dheur, Pierre Marie Jean Dauvister
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Patent number: 7284582Abstract: A pneumatic rubber tire containing at least one electrically conductive cord extending between its bead and tread portions to provide a path of least electrical resistance. The electrically conductive cord is comprised of at least one electrically conductive metal filament spirally wound around a centrally disposed core of at least one organic fiber. The electrically conductive cord does not extend to, and is exclusive of, an outer surface of the tire.Type: GrantFiled: September 16, 2004Date of Patent: October 23, 2007Assignee: The Goodyear Tire & Rubber CompanyInventors: David John Zanzig, Jennifer Lyn Ryba, Donald William Baldwin, Jr., Michael Edward Putinski, Jean Luc Dheur, Pierre Marie Jean Gustave Ghislain Dauvister
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Patent number: 7188653Abstract: A first aspect of the present invention relates to a filament (11; 12), especially for reinforcing rubber articles. Said filament (11; 12) features a contact surface (14) and an outer surface (13). In a second aspect, the invention relates to a steel cord (10) comprising two of said filaments (11, 12), the contact surfaces (14) are arranged adjacent to each other. The outer surfaces (13) are configured arcuate shaped and provide a smooth outer contour (15) of the steel cord (10). Due to said construction the largest dimension (d) of the steel cord (10) and the thickness of a rubber coating (18) may be considerably reduced. Additionally the invention relates to a method of producing a steel cord (10) and to a tyre (20) comprising a carcass ply (22) and/or at least one belt (25; 26) including said steel cords (10).Type: GrantFiled: October 11, 2001Date of Patent: March 13, 2007Assignee: Drahtcord Saar GmbH & Co., KGInventor: Siegfried Doujak
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Patent number: 7188654Abstract: Belt bandage for a vehicle pneumatic tire that includes a ply having strength carriers embedded in an unvulcanized rubber mixture. The strength carriers run essentially parallel to one another. Each strength carrier includes a hybrid cord that has a first twisted yarn having a high modulus of elasticity of at least approximately 25000 N/mm2 and a second twisted yarn having a low modulus of elasticity which is no greater than approximately 15000 N/mm2. The first and second twisted yarns are final-twisted together. A cord count E in cords per 5 cm ply widths, a force F1 at 2% elongation of each hybrid cord, and a force F2 at 6% elongation of each hybrid cord satisfies the following relationships: F1×E?approximately 600 N F2×E>approximately 1500 N. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.Type: GrantFiled: May 7, 2004Date of Patent: March 13, 2007Assignee: Continental AktiengesellschaftInventors: Joerg Dehnert, Guenter Wahl
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Patent number: 7168470Abstract: Inside a tread portion and outside a belt layer along the radius direction thereof is formed a belt layer comprising a band ply formed by winding spirally a tape- and belt-form ply wherein one ore plural band cords are stretched and arranged to be embedded in a topping rubber. In this band ply, the elongation resistance value K (unit: N? cord number/cm) specified by the following equation is set within the range of 99 to 700 when the sectional area of the band cord or each of the band cords is represented by S (unit: mm2), the modulus thereof when the elongation thereof is 2% is represented by M (unit: N/mm2), the band cord arrangement density per cm of the band ply is represented by D (unit: cord number/cm).Type: GrantFiled: June 10, 2002Date of Patent: January 30, 2007Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Naoki Yukawa, Kazumi Yamazaki, Takashi Tanaka, Yasuo Wada, Makoto Hizume
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Patent number: 7165586Abstract: Disclosed is a tire having at least one reinforcing ply in the carcass, belt, or bead region of the tire. The reinforcing ply is comprised of a blended fiber cord. The cords, in combination with a preferred cure temperature adhesive, achieve a high degree of thermal stability allowing for the use of such cords in various reinforcing plies for a pneumatic tire and for preferred use for such cords in areas of the tire subject to high temperatures either in curing or performance.Type: GrantFiled: December 22, 2003Date of Patent: January 23, 2007Assignee: The Goodyear Tire & Rubber CompanyInventors: Walter Kevin Westgate, Robert John Gartland, James Gregory Gillick, Rene Francois Reuter, Frank Schmitz
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Patent number: 7163736Abstract: Disclosed is a rubber reinforcing fiber cord in which an eco-friendly silk material is made usable for applications in an automobile pneumatic tire and the like acted upon by large loads. The rubber reinforcing fiber cord of the present invention is characterized in that: a multi-filament twisted cord formed of silk fibroin fibers having a total fineness of 1500 to 9000 dtex is covered with an adhesive agent formed of resorcin, formalin and rubber latex in order that a dip pickup thereof on the cord can become 4.0 to 8.0% per unit weight of the fibers; and the cord has an initial tensile strength not less than 3.5 cN/dtex, a high-temperature strength retention rate not less than 80%, and a post-moisture-absorption strength retention rate not less than 85%. The cord is usable in a belt reinforcing later and/or a carcass layer of a radial pneumatic tire for a passenger car.Type: GrantFiled: March 24, 2006Date of Patent: January 16, 2007Assignee: The Yokohama Rubber Co., Ltd.Inventor: Shuji Takahashi
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Patent number: 7156137Abstract: The invention relates to a rubber composition which contains starch/plasticizer composite, precipitated silica and carbon black reinforcement together with a coupling agent wherein the coupling agent is an organosilane polysulfide having an average of from about 2 to about 2.6 connecting sulfur atoms in its polysulfidic bridge. The invention provides for a chemical reaction between a coupling agent and silica which is substantially decoupled from a reaction between a coupling agent and starch/plasticizer to form a filler reinforcement network in situ within the elastomer host followed by a subsequent phase mixing of the carbon black therewith. The invention further relates to the resulting rubber composition and articles of manufacture, including tires, having at least one component comprised of said rubber composition.Type: GrantFiled: March 3, 2005Date of Patent: January 2, 2007Assignee: The Goodyear Tire & Rubber CompanyInventors: Filomeno Gennaro Corvasce, Fernand Antoine Joseph Fourgon
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Patent number: 7152644Abstract: A method of manufacturing a rubber reinforcing steel cord is provided, wherein the steel cord has a steel wire plated with metal containing copper and having on its surface an oil layer containing a cobalt compound, and includes an application step in which the oil containing a cobalt compound is applied to the steel wire or a steel cord plated with metal containing copper, and a step of twisting the steel wires.Type: GrantFiled: May 31, 2002Date of Patent: December 26, 2006Assignees: Sumitomo Rubber Industries, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Shinichi Miyazaki, Osamu Toda, Yasuo Sakai
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Patent number: 7093634Abstract: A two-piece tire assembly has a removable tread belt 12 for installing about the circumference of a tire carcass 14. The tread belt has at least a pair of belt layers, and one layer comprising inextensible reinforcing cables inclined at substantially zero degrees relative to the circumferential direction of the tire assembly. The cables in zero degree ply have a tensile breaking load of at least 27500 N.Type: GrantFiled: May 23, 2003Date of Patent: August 22, 2006Assignee: The Goodyear Tire & Rubber CompanyInventors: William Earl Rayman, Barry Allen Matrana, Thomas Roy Fuhrig, Gregory Scott Hanna
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Patent number: 7082978Abstract: A strip of tire ply stock is reinforced with steel cords wherein the steel cords are constructed of high strength wire filament having at least a tensile strength of ?2000×D+4400 MPa where D is the filament diameter in mm. Tires are constructed with the ply stock in the belt and/or carcass.Type: GrantFiled: October 21, 2004Date of Patent: August 1, 2006Assignee: The Goodyear Tire & Rubber CompanyInventors: Italo Marziale Sinopoli, Charles Elmer Hamiel
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Patent number: 7066229Abstract: A pneumatic tire comprises a cord-reinforced layer such as carcass, belt, bead reinforcing layer which is made of metallic cords, each metallic cord is made up of six to twelve metallic filaments whose diameter is in a range of from 0.15 to 0.45 mm, the metallic filaments include waved filaments and unwaved filaments, each waved filament is two-dimensionally waved at a wave pitch and wave height before twisted, the wave pitch is in a range of from 5.0 to 35.0 times the diameter of the filament, and the wave height is in a range of from 0.2 to 4.0 times the diameter of the filament, and the metallic filaments are twisted together into the cord at a twist pitch of from 10 to 40 mm so that the two-dimensionally waved filaments are each subjected to a certain rotation around its axial.Type: GrantFiled: July 16, 2003Date of Patent: June 27, 2006Assignees: Sumitomo Rubber Industries, Ltd., Sumitomo Electric Industries, Ltd.Inventors: Shinichi Miyazaki, Kazumi Yamazaki, Osamu Toda, Yasuo Sakai
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Patent number: 7055568Abstract: A cord-embedded rubber tape, a tire component made by winding such a tape, and a pneumatic tire comprising such a tire component are disclosed, wherein the tape is made of unvulcanized rubber and at least one cord is embedded therein along the length of the tape. The unvulcanized rubber may include short fibers oriented in the longitudinal direction of the tape.Type: GrantFiled: December 18, 2001Date of Patent: June 6, 2006Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Yoshikazu Tanaka
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Patent number: 7048343Abstract: This invention relates to annular or endless elastomeric track 10 for use in vehicles for civil engineering, construction works and agricultural works. The track 10 has a thin belt 20 which includes a primary table 59 made of corrosion resistant galvanized steel. The track 10 further has a plurality of spaced rubber traction tread lugs 30, on the outer surface oriented generally inclined, transverse or substantially perpendicular to the circumferential direction and guide lugs 32 on the internal surface 31.Type: GrantFiled: May 7, 2004Date of Patent: May 23, 2006Assignee: The Goodyear Tire & Rubber CompanyInventors: Paul John Peterson, Katherine Ann Folk
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Patent number: 7032637Abstract: A tire, in particular an elastomeric pneumatic tire, reinforced by lengths of a monofilament elongate composite element of long glass fibers impregnated in a thermoset resin having a glass transition temperature Tg greater than 130° C., in which the fibers are all parallel to each other, the elongate composite element having, under a bending stress an elastic deformation in compression of at least 2%, in flexion a breaking stress in compression greater than the breaking stress in extension.Type: GrantFiled: June 15, 2001Date of Patent: April 25, 2006Assignee: Conception et Developpement Michelin S.A.Inventor: Jean-Paul Meraldi
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Patent number: 7021349Abstract: The present spin finish composition comprises at least about 10 percent by weight based on the spin finish composition of components (a) and (b) having the formula R1—(CO)x—O—(CH(R2)—CH2—O)y—(CO)z—R3 wherein each of R1 and R3 is selected from the group consisting of hydrogen or an alkyl group having from one to 22 carbon atoms or an alkylene hydroxy group having from one to 22 carbon atoms, x is zero or one, R2 may vary within component (a) or component (b) and is selected from the group consisting of hydrogen or an alkyl group having from one to four carbon atoms, y is zero, or from one to 25, and z is zero or one, in component (a), x and z are equal to zero and the average molecular weight of component (a) is less than or equal to 1,900 and if R2 varies, component (a) is a random copolymer; and in component (b), at least x or z is equal to one or component (b) is a complex polyoxyethylene glyceride-containing compound having greater than 10 polyoxyethylene units; up to about five percent by weight baseType: GrantFiled: September 3, 2004Date of Patent: April 4, 2006Assignee: Performance Fibers, Inc.Inventor: Ralf Klein