Tire Characterized By Its Air Impervious Liner Or Inner Tube Patents (Class 152/510)
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Patent number: 8297326Abstract: The present invention relates to a composite ball-bouncing tire, comprising a subtire and an inner tube inside it, wherein the subtire includes a space between a ring-shaped base and its side walls, and the space includes a plurality of rails and fastening grooves that are arranged at intervals on its inner walls. A slope part that converges against the rolling-forward direction is established atop on both sides of the plurality of the rails, and at the bottom of the fastening grooves, there is a plurality of fixing grooves. One or more resilient balls are established in each rail and the inner tube includes a plurality of fixing parts on top of outer walls of a base component. When the subtire and inner tube rolls, the resilient balls will be pushed into the rails along the slope part and be pressed to bounce, thus producing supplementary force to drive the tire to move forward.Type: GrantFiled: August 21, 2009Date of Patent: October 30, 2012Inventor: Chin-Jung Chiu
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Patent number: 8276631Abstract: A pneumatic tire having a noise damper, a method for manufacturing the same, and a method for fixing the damper to the tire are disclosed. The inner surface of the tread portion of the vulcanized tire is buffed, and the noise damper is fixed to the buffed inner surface, using a double-sided adhesive tape which has specific characteristics such as adhesive force, tensile strength, thickness, cold-resistant property, heat-resistant property and water-resistant property.Type: GrantFiled: January 8, 2010Date of Patent: October 2, 2012Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Naoki Yukawa
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Patent number: 8272416Abstract: A heavy-load tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions each with a bead core therein, a carcass comprising a carcass ply of cords including a main portion and a pair of turnup portions, and an inner liner made from air-impermeable rubber and disposed on the tire internal cavity surface. The inner liner includes a radially inner portion that terminates radial inside than a lateral reference line passing through the innermost axial point and outermost axial point of the bead core. A rubber thickness ta is in a range of from 2.5 to 5.0 mm ranging from the tire internal cavity surface to the cord of the carcass ply on the lateral reference line, and an inner liner thickness tb is smaller than the rubber thickness ta and is in a range of from 0.5 to 3.0 mm on the lateral reference line.Type: GrantFiled: February 4, 2010Date of Patent: September 25, 2012Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Kazumi Yamazaki
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Patent number: 8261792Abstract: An airbag device for a vehicle tire capable of stabilizing the vehicle timely when the tire is exploding or being punctured suddenly to avoid potential accidents and to ensure driving comfort. The airbag device comprises a resilient outer ring installed between the tire and the wheel hub, and an inner ring serving to support the resilient outer ring. The resilient outer ring and the inner ring are compressed between the tire and the wheel hub under normal tire air pressure, and a space serving to increase driving comfortability and keep the outer ring from contacting the inner surface of the tire tread is designed between the resilient outer ring and the inner surface of the tire tread. When the tire is exploding or the air pressure of the tire is lost, the resilient outer ring is capable of bouncing instantly to support the weight of the vehicle.Type: GrantFiled: September 12, 2008Date of Patent: September 11, 2012Inventor: Liang Fan
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Patent number: 8251114Abstract: Provided is a pneumatic tire having an improved driving stability with reduced weight by use of an inner liner layer including a film made of a thermoplastic resin or a thermoplastic elastomer composition obtained by blending a thermoplastic resin with an elastomer. A pneumatic tire of the present invention includes: a pair of bead portions; a carcass layer bridged between the pair of bead portions; a belt layer disposed on an outer circumferential side of the carcass layer; an inner liner layer disposed along an inner surface of the carcass layer, the inner liner layer including a film made of a thermoplastic resin or a thermoplastic elastomer composition that is obtained by blending a thermoplastic resin with an elastomer; and bead cores buried in the bead portions, respectively. The inner liner layer is wound up around the bead cores from an inner side of the tire to an outer side thereof.Type: GrantFiled: February 6, 2009Date of Patent: August 28, 2012Assignee: The Yokohama Rubber Co., Ltd.Inventor: Yasuhiro Takahashi
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Patent number: 8245743Abstract: A method of effecting an improved adhesive bond between a rubber surface and a device adhered thereto is disclosed. In pneumatic tires, monitoring devices are more securely adhered to the innerliner of the tire utilizing a room temperature vulcanizable adhesive wherein curing is facilitated in the presence of moisture. The innerliner formulation is prepared by incorporating a material which has incomplete compatibility with the rubber of the innerliner formulation, and which has hygroscopic properties which thereby tends to attract moisture.Type: GrantFiled: December 5, 2008Date of Patent: August 21, 2012Assignee: The Goodyear Tire & Rubber CompanyInventors: Bruce Raymond Hahn, Peter Ross Shepler
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Patent number: 8240351Abstract: A pneumatic rubber tire having an integral rubber innerliner containing anchored hollow glass microspheres.Type: GrantFiled: February 10, 2009Date of Patent: August 14, 2012Assignee: The Goodyear Tire & Rubber CompanyInventors: Roger Neil Beers, Aaron Scott Puhala, David John Zanzig, Paul Harry Sandstrom, Ping Zhang, George Frank Balogh, Joseph Kevin Hubbell
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Patent number: 8220511Abstract: The present invention relates to a pneumatic rubber tire having an integral innerliner of a sulfur cured rubber composition. The innerliner rubber composition is comprised of at least one elastomer selected from bromobutyl rubber and chlorobutyl rubber which also contains a dispersion therein of ethylene vinyl alcohol polymer.Type: GrantFiled: April 8, 2008Date of Patent: July 17, 2012Assignee: The Goodyear Tire & Rubber CompanyInventors: Junling Zhao, Aaron Scott Puhala
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Patent number: 8215349Abstract: The invention relates to automobile tires or tire assemblies or parts thereof suitable for being balanced by introduction therein of a thixrotropic balancing gel, wherein surfaces of the tire or tire assembly or part thereof which are intended to be in contact with the balancing gel are provided with a surface nanostructure with an average surface roughness in the range of 1-1000 nm. The surface nanostructure will enable the thixotropic balancing gel to move to the location, where it balances the tire, significantly quicker than if the surface in question did not have the surface nanostructure.Type: GrantFiled: July 18, 2007Date of Patent: July 10, 2012Assignee: Lars Bertil CarnehammerInventor: Norbert Seitz
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Publication number: 20120160388Abstract: A pneumatic radial ply runflat tire is described. The tire has a carcass structure having at least one radial carcass ply, two bead regions, two sidewalls, each sidewall having an upper sidewall portion that connects to the shoulders and being reinforced by an insert, a belt structure between the tread and the carcass, and an air impermeable inner liner formed of a butyl rubber located radially inward of the carcass structure wherein the air impermeable inner liner extends from a first shoulder region to a second shoulder underneath the crown portion of the tire, and does not extend from the shoulder to the bead portion of the tire.Type: ApplicationFiled: July 13, 2011Publication date: June 28, 2012Applicant: THE GOODYEAR TIRE & RUBBER COMPANYInventors: Christian Jean-Marie Kaes, Gary Robert Burg, Neil Phillip Stuber, Brian Richard Koch, Christopher David Dyrlund, Laurent Luigi Domenico Colantonio
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Publication number: 20120156400Abstract: An inflatable article is provided with a layer impermeable to inflation gases. The layer has an elastomer composition that includes at least, as a predominant elastomer by weight, a thermoplastic styrene (TPS) elastomer and a platy filler. The platy filler has an equivalent diameter (Dv(0.5)) of between 20 and 45 micrometers, and has a shape factor (F) greater than 65.Type: ApplicationFiled: July 22, 2010Publication date: June 21, 2012Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., SOCIETE DE TECHNOLOGIE MICHELINInventors: Vincent Abad, Emmanuel Custodero, Vincent Lemal
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Patent number: 8202604Abstract: A pneumatic tire having an air permeation preventive layer formed by adhering a resin film containing thermoplastic resin as a main component thereof to a tire inner wall surface, wherein the resin film is laminated, as a narrow width slit film shape, with an elastomer and the resultant ribbon-shaped laminate is continuously and spirally wound in a tire circumferential direction so that the edges thereof partially overlap to thereby form the air permeation preventive layer, whereby a pneumatic tire having a light weight and superior air permeation preventive property, no splice openings of the air permeation preventive layer at the time of tire processing, and capable of shortening the processing time can be obtained as well as the production method thereof.Type: GrantFiled: April 26, 2007Date of Patent: June 19, 2012Assignee: The Yokohama Rubber Co., Ltd.Inventor: Shusaku Tomoi
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Patent number: 8201603Abstract: Provided is a pneumatic tire: in which a film made of a thermoplastic resin or a thermoplastic elastomer composition obtained by blending an elastomer in a thermoplastic resin is used for an inner liner layer; and which is improved in its internal pressure holding performance while maintaining its durability satisfactorily. The pneumatic tire according to the present invention is a pneumatic tire in which: a carcass layer including multiple reinforcing cords is laid between paired bead parts; and the carcass layer is wound up around each of bead cores from the inner side to the outer side of the tire.Type: GrantFiled: October 29, 2007Date of Patent: June 19, 2012Assignee: The Yokohama Rubber Co., Ltd.Inventors: Jun Matsuda, Yuichi Hara
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Publication number: 20120141696Abstract: Elastomer composition comprising at least, as predominant elastomer, a thermoplastic SIBS elastomer comprising a “polyisobutylene” block and, at least one of the ends of the “polyisobutylene” block, a thermoplastic block of specific structure having a Tg greater than or equal to 100° C. The elastomer composition according to the invention may be used as an elastomer layer impermeable to the inflation gases in an inflatable object. This inflatable object is, in particular, an inner tube or a pneumatic tyre for a motor vehicle.Type: ApplicationFiled: June 1, 2010Publication date: June 7, 2012Applicant: SOCIETE DE TECHNOLOGIE MICHELINInventors: Vincent Abad, Marc Greiveldinger, Julien Thuilliez
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Publication number: 20120125507Abstract: The present invention is directed to a method for making a tire having a foam noise damper, comprising the steps of: obtaining a tire having an innerliner, the innerliner having a surface facing an interior cavity of the tire; applying a foamable liquid to the surface; and foaming the foamable liquid to form a solid foam noise damper secured to the tire innerliner.Type: ApplicationFiled: November 24, 2010Publication date: May 24, 2012Inventors: René Louis Bormann, Giorgio Agostini, Ramendra Nath Majumdar
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Publication number: 20120118465Abstract: A pneumatic tire and a method of making a tire are provided. The tire includes a tire tread, a tire layer, and a barrier layer. The tire layer is circumferentially disposed inwardly of the tire tread and includes a first end and a second end situated adjacent each other to define a butt joint. The barrier layer includes a first end and a second end, a portion of the first end of the barrier layer overlaps the second end by about 1.5 cm or more to define a lap joint, and where the first end of the barrier layer is received between and extends beyond the butt joint such that the first end of the tire layer is sandwiched between the lap joint.Type: ApplicationFiled: November 15, 2010Publication date: May 17, 2012Inventors: Ramendra Nath Majumdar, Kiyoshi Ueyoko
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Publication number: 20120111469Abstract: Provided is an adhesive composition that provides excellent adhesion between a thermoplastic resin or a thermoplastic elastomer in which an elastomer component is dispersed in the thermoplastic resin and a tire by a combination of general-purpose materials, without using any special polymer. The adhesive composition comprises 100 parts by weight of a base polymer and 20 to 50 parts by weight of a resol-type phenolic resin-based resin crosslinking agent, wherein 100 parts by weight of the base polymer comprises 80 to 99 parts by weight of a thermoplastic elastomer and 1 to 20 parts by weight of a halogenated rubber. The resol-type phenolic resin-based resin crosslinking agent is preferably an alkylphenol-formaldehyde resin. Examples of the thermoplastic elastomer can include styrene-butadiene-styrene block copolymers, and examples of the halogenated rubber can include chloroprene rubber and chlorosulfonated polyethylene.Type: ApplicationFiled: March 7, 2011Publication date: May 10, 2012Applicant: The Yokohama Rubber Co., Ltd.Inventor: Shusaku Tomoi
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Patent number: 8151845Abstract: A tire with reduced rolling noise includes a tire structure formed of at least one crown extended by two sidewalls and two beads. A base of each of the two beads is configured to be mounted onto a rim seat. The tire also includes a carcass-type reinforcing structure anchored into the two beads and an additional layer bonded to an inner wall of the tire structure. The additional layer is bonded to the tire structure at its edges and the rest of the additional layer is not bonded. The additional layer includes an inflation valve.Type: GrantFiled: April 23, 2008Date of Patent: April 10, 2012Assignee: Michelin Recherche et Technique S.A.Inventors: Jose Merino-Lopez, Luc Bestgen
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Patent number: 8114335Abstract: A method and apparatus for partial depth-wise cure of a tire inner liner are disclosed. The method comprising forming a layer of uncured rubber, that layer having a first surface and an opposite surface, applying pressure to the layer of rubber, heating the layer of rubber from the first surface to more fully cure the layer on that surface than on the opposite surface, cooling the layer of rubber and releasing the pressure applied to the layer of rubber after the layer has cooled.Type: GrantFiled: December 30, 2002Date of Patent: February 14, 2012Assignee: The Goodyear Tire & Rubber CompanyInventors: Kenneth Dean Conger, William Murray Huth, William Allen Rex, Frederick Forbes Vannan, Jr.
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Publication number: 20120012237Abstract: Tubeless tire, adapted to be inflated with an inflation gas, comprising: a crown (25) comprising a crown reinforcement (80, 90) surmounted by a tread (40); two sidewalls (30) extending the crown radially inwards; two beads (20) radially inside the sidewalls and each comprising a annular reinforcement structure (70); a carcass reinforcement (60) anchored in each of the beads; an inner-liner (50) impermeable to the inflation gas, covering the inner surface of the tire; wherein, in each sidewall of the tire, the inner-liner comprises at least one slit (200), situated radially between the annular reinforcement structure that is radially outermost, and the radius RE at which the carcass reinforcement, when the tire is fitted to the rim and inflated to its operating pressure, has its largest axial width, the slit having a maximum radial height HR of between 0.5 and 5 mm and extending over at least half of the circumference of the tire. Also disclosed is a process for manufacturing such a tire.Type: ApplicationFiled: August 6, 2009Publication date: January 19, 2012Applicants: Michelin Recherche et Technique S.A., SOCIETE DE TECHNOLOGIE MICHELINInventors: Sebastien Beaugrand, Daniel Lesclingant, Gilles Pommeyrol
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Patent number: 8092627Abstract: Provided is a manufacturing method for a pneumatic tire including the steps of: shaping a cylindrical film formed of a thermoplastic resin or a thermoplastic elastomer composite in which a thermoplastic resin is blended with an elastomer, folding the film into a sheet shape, laminating rubber layers on both surfaces of the folded film, opening the laminate of the film and the rubber layers into a cylindrical shape, fitting the laminate thus opened on a tire making drum, forming the tire pneumatic tire including the film as an air permeation preventing layer, and curing the uncured tire.Type: GrantFiled: February 19, 2008Date of Patent: January 10, 2012Assignee: The Yokohoma Rubber Co., Ltd.Inventors: Yoshiaki Hashimura, Yoshiaki Kirino, Norifumi Kameda
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Publication number: 20120003413Abstract: A multilayer elastomer laminate that is impermeable to inflation gases, which is capable of adhering to a diene elastomer composition and which can be used in an inflatable article provided with such a diene composition, said laminate comprising at least two superposed elastomer layers (phr signifying parts by weight per hundred parts of elastomer, in each elastomer composition considered): as a gastight first layer, a first elastomer composition comprising more than 50 phr of a copolymer containing polystirene and polyisobutylene blocks; as an adhesive second layer, a second elastomer composition comprising more than 50 phr of an unsaturated thermoplastic stirene copolymer and optionally a liquid plasticizing agent at a content from 0 to less than 100 phr. This multilayer laminate possesses very good impermeability properties and a reduced hysteresis compared to layers based on butyl rubber, and also a high adhesion to a diene elastomer third layer.Type: ApplicationFiled: November 30, 2009Publication date: January 5, 2012Inventors: Pierre Lesage, Vincent Abad, Emmanuel Custodero
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Publication number: 20120003409Abstract: Inflatable article equipped with an elastomer layer impermeable to the inflation gases comprising at least: as first thermoplastic stirene elastomer, at least 50 phr of a copolymer containing polystirene and polyisobutylene blocks, in particular SIBS; as second thermoplastic stirene elastomer, at most 50 phr of a thermoplastic stirene copolymer of unsaturated type, in particular SIS; and optionally an extender oil, in particular polybutene, at a content preferably between 5 and 100 phr. This gastight elastomer layer has very good impermeability properties and a lower hysteresis compared to layers based on butyl rubber. The inflatable article can be, in particular, an inner tube or a pneumatic tire for a motor vehicle.Type: ApplicationFiled: November 30, 2009Publication date: January 5, 2012Applicants: Michelin Recherche et Technique S.A., SOCIETE DE TECHNOLOGIE MICHELINInventors: Pierre Lesage, Vincent Abad, Cécile Barbier, Emmanuel Custodero
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Patent number: 8088861Abstract: A tire inner liner having a rubber composition based on at least one butyl rubber, a reinforcing filler, graphite and a plasticizing system. The plasticizing system comprises a hydrocarbon plasticizing resin, the glass transition temperature Tg of which is above 20° C. and the softening point of which is below 170° C. A process for producing such a composition for a tire inner liner comprises incorporating into a diene elastomer, in a mixer: a reinforcing filler, graphite, and a plasticizing system, by thermomechanically mixing all the ingredients, one or more times, until a maximum temperature between 110° C. and 190° C. is reached; cooling the mixture down to a temperature below 100° C.; then incorporating a crosslinking system; and mixing everything until a maximum temperature below 110° C. is reached.Type: GrantFiled: May 23, 2008Date of Patent: January 3, 2012Assignees: Societe de Technologie Michelin, Michelin Recherche et Technique S.A.Inventors: Aurélie Joseph, Aline Riou, Julien Berriot, Julien Cladiere
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Publication number: 20110284142Abstract: A tire configured to be mounted on a mounting rim, comprising two beads, each bead comprising an annular reinforcing structure and a seat configured to come into contact with the mounting rim; a crown comprising a tread; two sidewalls, each sidewall extending between a bead and the crown; a carcass reinforcing armature extending from one bead to the other and anchored within each bead to the annular reinforcing structure; and a membrane situated radially on the inside of the carcass reinforcing armature, this membrane comprising: (a) a membrane reinforcing armature anchored in each bead to the annular reinforcing structure, wherein the membrane reinforcing armature comprises a layer of reinforcement elements directed substantially radially, that is to say which make an angle greater than or equal to 65° and less than or equal to 90° with respect to the circumferential direction; and (b) an airtight layer of rubber mix; wherein the membrane is arranged in such a way that part of the membrane together with partType: ApplicationFiled: November 14, 2008Publication date: November 24, 2011Applicants: Michelin Recherche et Technique S.A., Societe de Technologie MichelinInventor: Olivier Francois
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Publication number: 20110277901Abstract: Inflatable article equipped with an elastomer layer impermeable to inflation gases, said elastomer layer comprising at least, as the predominant elastomer, a thermoplastic SIBS elastomer comprising a polyisobutylene block comprising an amount of units derived from one or more conjugated dienes ranging from 0.5% to 6% by weight relative to the weight of the polyisobutylene block, and, at least one of the ends of the polyisobutylene block, a stirenic block representing at most 16% by weight of the total weight of the block copolymer. Preferably the airtight elastomer layer also comprises, as a plasticizing agent, an extender oil for the SIBS elastomer. The inflatable article of the invention is, in particular, an inner tube or a pneumatic tire for a motor vehicle.Type: ApplicationFiled: November 17, 2009Publication date: November 17, 2011Inventors: Pierre Lesage, Emmanuel Custodero, Julien Thuilliez, Marc Greiveldinger
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Publication number: 20110240196Abstract: The invention relates to rubber nanocomposites particularly suitable for innerliners and other tire applications. The uncured nanocomposite comprises an elastomer, tackifier and nanoclay.Type: ApplicationFiled: June 14, 2011Publication date: October 6, 2011Inventor: Mun Fu Tse
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Patent number: 8028733Abstract: A green tire includes a surface layer defining a green tire surface and made up of a plurality of windings of an unvulcanized rubber tape. A part of each of the windings is exposed on the green tire surface so that the exposed part has a width of from 50% to 80% of the width W1 of the rubber tape. Each of the windings has a substantially rhomboid cross section and has one end at an acute angle corner exposed on the green tire surface and the other end at the opposing acute angle corner. An angle theta of a diagonal line of the rhomboid drawn between the one end and the other end is not more than 30 degrees with respect to a tangential line to a profile line of the green tire surface.Type: GrantFiled: December 27, 2007Date of Patent: October 4, 2011Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Masayuki Sakamoto, Toshiaki Ono, Toshiyuki Mafune, Takamichi Sagawa
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Patent number: 8021728Abstract: A polyamide resin composition, having an excellent extensibility and flexing fatigue, composed of a polyamide resin (A), as a matrix, and a modifying polymer (C), dispersed therein, having a functional group (B) reactive with the polyamide resin (A), wherein a tensile stress at break of the modifying polymer (C) is 30 to 70% of the tensile stress at break of the polyamide resin (A), and a tensile elongation at break of the modifying polymer (C) is 100 to 500% of the tensile elongation at break of the polyamide resin (A) as well as a pneumatic tire and hose using the same.Type: GrantFiled: January 18, 2007Date of Patent: September 20, 2011Assignees: The Yokohama Rubber Co., Ltd., ExxonMobil Chemical Patents Inc.Inventors: Yoshihiro Soeda, Yuichi Hara, Naoyuki Morooka, Andy Haishung Tsou
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Patent number: 8020597Abstract: The invention is directed to increasing the endurance of a tire by providing an oxidation shield strip located in the vicinity of a critical area of the tire. The oxidation shield strip acts as a local oxygen diffusion barrier.Type: GrantFiled: May 31, 2006Date of Patent: September 20, 2011Assignee: Ford Global Technologies, LLCInventors: Kevin Ellwood, John Baldwin, David Bauer, David Rohweder
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Patent number: 7992605Abstract: A tire assembly inserted in a conventional pneumatic tire that allows the driven vehicle to be operated in a normal operating condition as well as in both a low tire pressure and a “run flat” condition. The tire embodies a multifunctional tire support device that permits the tire even when punctured to continue to support the vehicle and never allows the tire to go entirely flat. The support device when installed reinforces the tire tread and its side walls by applying internal pressure against them should they collapse when tire is punctured. The invention embodies a means for supporting the tire with the multifunctional device and provides an additional embodiment that uses the same device with a backup redundant inner tube to provide support to the punctured or ruptured tire and permits it to be operated in a run flat condition. The inner tube is located in the assembly at a distance away from the tread so that any puncture of the tread would not also puncture the inner tube.Type: GrantFiled: December 28, 2007Date of Patent: August 9, 2011Inventor: Julian Yee
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Publication number: 20110186200Abstract: A tubeless tire includes a carcass covered with a first impermeable layer and a second impermeable layer. The first and second impermeable layers have portions overlapped to obtain a good airtight property. The first impermeable layer includes a composite compound with strength reinforced powder, an intersection carrier and rubber that the tire is strengthened and light in weight. The tubeless tire of the present invention further has a thread on the first impermeable layer to contact ground.Type: ApplicationFiled: April 15, 2010Publication date: August 4, 2011Applicant: KENDA RUBBER IND. CO., LTD.Inventors: Ying-Ming Yang, Tsung-Yueh Lai, Chin-Hsin Lai
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Patent number: 7976666Abstract: A method for producing a laminate (E) of a low air permeable resin/rubber composition comprising: laminating a laminate (D) of a low air permeable resin (A) layer having an air permeation coefficient of 1.0×10?12 cc·cm/cm2·sec·cmHg or less and an average thickness d (?m) of 0.05<d<5 and a thermoplastic resin composition (B) layer with a rubber composition (E) layer so as to form (B)/(A)/(E), followed by vulcanization, and peeling off only the thermoplastic resin composition (B) from the laminate, as well as the laminate thereof.Type: GrantFiled: September 29, 2006Date of Patent: July 12, 2011Assignee: The Yokohama Rubber Co., Ltd.Inventor: Naoyuki Morooka
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Publication number: 20110146870Abstract: The present invention is directed to a pneumatic tire comprising a carcass and an innerliner radially inward of and in direct contact with the carcass, the innerliner comprising a rubber composition comprising: 100 parts by weight of at least one elastomer; and from 10 to 80 parts by weight, per 100 parts by weight of elastomer (phr) of carbon black; and from 1 to 30 phr of slate powder.Type: ApplicationFiled: December 17, 2009Publication date: June 23, 2011Inventors: Carolin Anna Welter, Thomas Hermann Mans, Claude Schweitzer
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Patent number: 7954528Abstract: A thermoplastic elastomer composition having excellent durability and flexibility while possessing superior air impermeability. In particular, a process for producing a thermoplastic elastomer composition having high rubber content by multistage addition of at least one vulcanizable rubber component, in which the time required to substantially cure the at least one rubber component preferably is less the mixer residence time. Such compositions are particularly useful in applications such as tire innerliners and barrier films or layers.Type: GrantFiled: October 27, 2005Date of Patent: June 7, 2011Assignees: ExxonMobil Chemical Patents Inc., The Yokohama Rubber Co., Ltd.Inventors: Andy Haishung Tsou, Yoshihiro Soeda, Yuichi Hara, Matthew Brian Measmer
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Patent number: 7947141Abstract: Provided is a method of manufacturing a pneumatic tire, which is capable of reducing tire failure without leading to reduction in productivity, the method including: folding a cylindrical film made of thermoplastic resin or thermoplastic elastomer composition into a sheet shape; stacking rubber layers on both surfaces of the folded film in a manner that the rubber layers protrude from both edge portions of the film; forming a laminate by cutting protruding parts of the rubber layers into rubber protruding portions each having an amount of protrusion (h) in a range from 3 mm to 20 mm; expanding the laminate into a cylindrical shape and fitting the laminate onto a tire making drum; pressing down each rubber protruding portion toward the surface of the drum by use of a pressure roller; pasting other components of a tire onto the laminate to form an uncured tire; and curing the uncured tire.Type: GrantFiled: September 4, 2008Date of Patent: May 24, 2011Assignee: The Yokohama Rubber Co., Ltd.Inventors: Norifumi Kameda, Yoshiaki Hashimura
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Publication number: 20110094645Abstract: Disclosed is a pneumatic tire comprising an innerliner comprising a functionalized poly(isobutylene-co-p-methylstyrene) elastomer, at least one layered filler; and less than 8 phr of at least one processing aid; wherein the innerliner possesses a permeation coefficient of less than 200 mm·cm3/m2·day at 40° C.; and wherein the tire is selected from truck tires, airplane tires, off-the-road tires and farm tractor tires. In a preferred embodiment, the tire is formed by a process of contacting the functionalized poly(isobutylene-co-p-methylstyrene) elastomer, at least one layered filler, and at least one solvent to form an nanocomposite composition; and combining the nanocomposite composition with the at least one processing aid and a curative composition to form the innerliner, then forming the tire comprising the innerliner.Type: ApplicationFiled: October 26, 2009Publication date: April 28, 2011Inventors: Michael Brendan Rodgers, Bharat B. Sharma, Nitin K. Tambe, Weiqing Weng
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Patent number: 7905263Abstract: The present invention provides an elastomeric composition processable in a curable, filled rubber formulation. The composition comprises a halogenated interpolymer of a C4 to C7 isoolefin and from 3 to 20 weight percent alkylstyrene and comprising from 0.2 to 2 mole percent haloalkylstyrene, a Mooney viscosity less than 37, a number average molecular weight less than 270,000, a weight average molecular weight less than 470,000, a z-average molecular weight less than 700,000, and a branching index (g?) from 0.4 to 1.1. Also disclosed are a method of making a cured, filled rubber article, comprising compounding the elastomeric composition with filler and curative, processing the compounded composition to form a shape of the article, and curing the composition to obtain the article in the formed shape, as well as a tire comprising an innerliner made by the method.Type: GrantFiled: December 29, 2005Date of Patent: March 15, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Mun Fu Tse, Dirk Frans Rouckhout, Donald Sheley Tracey, Walter Harvey Waddell
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Patent number: 7905978Abstract: A method for easily producing a low permeable rubber laminate comprised of a thin film layer of a low permeable resin (B) laminated on a layer of a rubber composition (C) comprising: laminating, on a low permeable multilayer film comprised of layer (A)/layer (B) of a laminated film of a layer of a polyolefin-based resin (A) and a thin film layer of a low permeable resin (B) having an air permeability coefficient, determined based on JIS K7126 at 30° C., of 0.5×10?12 cc·cm/cm2·sec·cmHg or less and an average thickness ? of 0.05<?<20 ?m and having a peeling strength of the layer (A)/layer (B), determined based on JIS K6256 at 30° C., of less than 0.05N/mm for a pseudo-adhesive state, a layer of an unvulcanized rubber composition (C) in an order of layer (A)/layer (B)/layer (C) to bond the layer (B)/layer (C) so that the peeling strength, determined based on JIS K6256 at 30° C., of the layer (C) and layer (B) becomes 0.Type: GrantFiled: October 22, 2007Date of Patent: March 15, 2011Assignee: The Yokohama Rubber Co., Ltd.Inventor: Naoyuki Morooka
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Publication number: 20110056604Abstract: An object of the present invention is to provide a polymer laminate that has a small thickness and is excellent in air permeation resistance and adhesion with an adjacent rubber, and a pneumatic tire using the same as an inner liner. A polymer laminate includes a first layer having a thickness of 0.05 mm to 0.6 mm made of a styrene-isobutylene-styrene triblock copolymer, and a second layer containing at least one of a styrene-isoprene-styrene triblock copolymer and a styrene-isobutylene diblock copolymer, and a second layer have a thickness of 0.01 mm to 0.3 mm.Type: ApplicationFiled: June 9, 2010Publication date: March 10, 2011Inventor: Mutsuki Sugimoto
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Patent number: 7896996Abstract: In the producing method of the pneumatic tire, a step in which a wide rubber ribbon having a width of 60 to 110 mm is wound in a circumferential direction to form annular bodies is repeated a plurality of times, an inner liner member in which the annular bodies are continuously provided in a widthwise direction is formed, and the inner liner member is disposed on a tire inner peripheral surface as an inner liner layer of a pneumatic tire.Type: GrantFiled: August 22, 2006Date of Patent: March 1, 2011Assignee: Toyo Tire & Rubber Co., Ltd.Inventor: Kazuma Nishitani
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Publication number: 20110024015Abstract: An object of the present invention is to provide: a film which is applicable to a tire, has excellent gas barrier properties and bending resistance, allows weight of a tire to be reduced with improving internal pressure retainability of the tire at both the brand-new stage and the used stage thereof, and is capable of demonstrating good gas barrier properties without breaking especially in a running condition at a relatively low temperature in winter time or the like; an inner liner for tire, using the film; and a tire provided with the inner liner for tire. The film of the present invention comprises at least a layer composed of resin composition (D) produced by dispersing viscoelastic substance (C) in a resin containing modified ethylene-vinyl alcohol copolymer (B) obtained by subjecting ethylene-vinyl alcohol copolymer (A) to a reaction, wherein 100% modulus at ?30° C. of the viscoelastic substance (C) is smaller than 6 MPa.Type: ApplicationFiled: March 31, 2009Publication date: February 3, 2011Applicants: BRIDGESTONE CORPORATION, KURARAY CO., LTDInventors: Yuwa Takahashi, Daisuke Nohara, Daisuke Nakagawa, Kouta Isoyama
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Publication number: 20110011507Abstract: Provided are a laminate having superior adhesion between a thermoplastic resin composition layer and rubber adhesive layer and superior durability in use, and a pneumatic tire comprising the laminate. This laminate comprises a thermoplastic resin composition layer and a rubber composition layer, wherein the thermoplastic resin composition layer comprises at least one selected from the group consisting of an ethylene-vinyl alcohol copolymer having an ethylene unit content of 20 to 50 mol %, an aliphatic polyamide having a molar ratio of methylene group to amide group of less than 5.4, and a meta-xylenediamine-adipic acid polycondensate; and wherein the rubber composition layer comprises 100 parts by weight of rubber component and 30 to 120 parts by weight of a wet-process silica having a BET specific surface area of 100 to 300 m2/g.Type: ApplicationFiled: January 9, 2009Publication date: January 20, 2011Applicant: THE YOKOHAMA RUBBER CO., LTD.Inventor: Naoyuki Morooka
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Patent number: 7868073Abstract: A sulfur-vulcanizable rubber composition containing 100 parts by weight of a diene-based rubber, 1 to 30 parts by weight of an ester-based plasticizer having a saturated cyclic structure of the formula (I): wherein R1 and R2 independently indicate a hydrogen atom or a C1 to C18 organic group and 40 to 120 parts by weight of a reinforcing filler and a pneumatic tire using the same.Type: GrantFiled: October 10, 2008Date of Patent: January 11, 2011Assignee: The Yokohama Rubber Co., Ltd.Inventor: Yoshihiro Kameda
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Publication number: 20100319829Abstract: Provided are: a pneumatic tire capable of retaining a satisfactory uniformity even though the tire includes film layers superposed by winding a film layer in a circumferential direction of the tire multiple times; and a process for producing the same. The present invention is the pneumatic tire including the film layers of the thermoplastic resin or the thermoplastic elastomer composition made by blending the elastomer with the thermoplastic resin, which are superposed by winding the film layer in the circumferential direction of the tire multiple times, the tire wherein a rubber film is interposed between the film layers.Type: ApplicationFiled: March 6, 2009Publication date: December 23, 2010Applicant: THE YOKOHAMA RUBBER CO., LTD.Inventors: Yoshiaki Hashimura, Takumi Hatakeyama
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Publication number: 20100319828Abstract: A tire comprising an envelope made at least partly of rubber, defining an internal annular volume and having a crown (1), which defines a tread, two sidewalls (2) joined to the crown (1), and a supporting structure (4). The supporting structure (4) is pressurized and divides the annular volume of the tire into a plurality of compartments (400) or cells, and the sidewalls (2) are connected to or integral with the supporting structure (4).Type: ApplicationFiled: October 10, 2008Publication date: December 23, 2010Applicants: Societe de Technologie Michelin, Michelin Recherche et Technique S.A.Inventor: Michel Deal
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Patent number: 7850808Abstract: In a pneumatic tire whose tire cross section height is less than 110 mm and which has an inner liner layer disposed inside of a carcass layer, the inner liner layer has a wide rubber ribbon region formed by spirally winding a wide rubber ribbon along a tire circumferential direction, a wide rubber ribbon of an innermost peripheral side forms a tire inner peripheral surface of a region extending at least from the vicinity of an end of a belt layer to a tire cross section maximum width position.Type: GrantFiled: August 22, 2006Date of Patent: December 14, 2010Assignee: Toyo Tire & Rubber Co., Ltd.Inventor: Kazuma Nishitani
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Publication number: 20100294411Abstract: A puncture-resistant multilayer laminate that is impermeable to inflation gases, comprising: a gastight first elastomer layer comprising a polystirene/polyisobutylene block copolymer thermoplastic elastomer, and optionally an extender oil with a content within a range of 0 to less than 100 phr; and a self-sealing second elastomer layer comprising a thermoplastic stirene elastomer, identical to or different from the first elastomer, and an extender oil with a content greater than 200 phr.Type: ApplicationFiled: May 20, 2008Publication date: November 25, 2010Applicants: SOCIETE DE TECHNOLOGIE MICHELIN, Michelin Recherche et Technique S.A.Inventors: Emmanuel Custodero, Pierre Lesage, José Merino Lopez
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Publication number: 20100288413Abstract: The present invention relates to a radial tire for a heavy load comprising a bead core, a carcass ply layer, an inner liner A layer, a belt and a tread, wherein the following relational equation (I): P/G?1.00??(I) and relational equation (II): D?6.0??(II) are satisfied at the same time, and the radial tire for a heavy load which is improved in a low fuel consumption and in which a tire durability is consistent with a reduction in a weigh can be provided.Type: ApplicationFiled: May 16, 2008Publication date: November 18, 2010Applicant: BRIDGESTONE CORPORATIONInventor: Kouji Ishida
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Patent number: 7819155Abstract: The present invention provides a rubber composition for a tire that is capable of improving air permeability resistance while preventing chipping of the bead toe and a pneumatic tire comprising the rubber composition. Specifically, the present invention relates to a rubber composition for a tire containing a composite material comprising rubber, polyolefin and nylon; the composite material being contained so that the content of nylon is 1 to 40 parts by weight based on 100 parts by weight of the total rubber component in the rubber composition.Type: GrantFiled: March 9, 2005Date of Patent: October 26, 2010Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Hirokazu Ishida