Characterized By Belt Or Breaker Structure Patents (Class 152/526)
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Publication number: 20140261950Abstract: The invention is directed to pneumatic tires for heavy vehicle service that include a carcass, a tread disposed radially outward of the carcass, a sidewall intersecting the tread at a shoulder, and a belt reinforcing structure positioned radially between the carcass and the tread. The belt reinforcing structure includes four belt layers, each layer reinforced by parallel cords the four belts characterized by their cord orientation and angles. A first radially inner belt layer, an adjacent second belt layer overlaying the first belt layer and a third belt layer overlaying the second belt layer are all oriented directionally extending right (R) relative to an equatorial center plane of the tire, a fourth radially outer belt layer overlaying the third belt layer has cords directionally extending left (L). The pneumatic tires of the invention containing these belt layers have improved crown durability and stiffness while maintaining the same overall tire weight.Type: ApplicationFiled: May 28, 2014Publication date: September 18, 2014Applicant: The Goodyear Tire & Rubber CompanyInventor: John Kotanides, JR.
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Patent number: 8820377Abstract: Each of belt layers of a pneumatic radial tire includes a plurality of single steel wires with an identical wire diameter extending linearly in an identical direction in alignment with each other and embedded in rubber. Each of the wires is provided with axial torsion. On the outer surface of a tread portion, circumferential grooves extend in the circumferential direction of the tire. The wire diameters of the single steel wires are 0.28 mm to 0.38 mm. An average of intervals of the single steel wires is not less than 0.10 mm. The tire has an out-of-plane bending stiffness of not less than 6000 N·mm2 per inch of length of the tread portion in the circumferential direction when a force application point is located at the circumferential groove. The implanted density E (wires/50 mm) of the single steel wires satisfies E?1869×d2?1838×d+493, where d is the wire diameter.Type: GrantFiled: June 12, 2012Date of Patent: September 2, 2014Assignee: The Yokohama Rubber Co., Ltd.Inventors: Yoshio Ueda, Yoshiki Kanehira
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Patent number: 8815034Abstract: A pneumatic radial tire includes: at least one carcass layer suspended across left and right bead parts; a belt layer arranged on an outer circumferential side of the carcass layer; and a tread arranged on an outer circumferential side of the belt layer. The tread has a laminated structure in which a thermoplastic film layer of a thermoplastic resin or a thermoplastic elastomer composition is interposed between a tread-side rubber layer and a belt layer-side rubber layer. The thermoplastic elastomer composition is obtained by blending an elastomer in a thermoplastic resin. A process for producing a retreaded tire includes the steps of: forming a base tire from the pneumatic radial tire by softening the thermoplastic film layer through heating so as to separate and remove the tread-side rubber layer, the pneumatic radial tire having the tread worn away; and subsequently bonding a new tread-side rubber layer onto the base tire.Type: GrantFiled: May 14, 2009Date of Patent: August 26, 2014Assignee: The Yokohama Rubber Co., Ltd.Inventors: Kouichi Koutoku, Mitsuo Sakurai
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Publication number: 20140230987Abstract: Various embodiments of a tire having an offset body ply construction are disclosed.Type: ApplicationFiled: February 21, 2013Publication date: August 21, 2014Applicant: BRIDGESTONE AMERICAS TIRE OPERATIONS, LLCInventors: John R. Sabistina, Kathleen A. Clemmer, Kent D. Weatherwax, Andrew D. Anderson, Elizabeth M. Beutler, Juan D. Leyva, John I. Stuckey
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Patent number: 8800624Abstract: A belt width of an intersecting belt 15a having the maximum belt width is set to 80% or more of the maximum width of a carcass line; a difference in belt widths between the intersecting belt 15a and an intersecting belt 15b is set in the range of 10 mm to 50 mm on one side of the belt in the width direction; the intersecting belt 15a is not narrower than the circumferential belt 14, and the circumferential belt 14 is not narrower than the intersecting belt 15b; and a pneumatic tire according to the present invention has an interposed rubber 16 having a thickness increasing toward the widthwise outer side of the tire to be 3 mm or more, and a side-lower rubber 17 having an elastic modulus less than the elastic modulus of a coating rubber coating the circumferential belt 14.Type: GrantFiled: September 24, 2010Date of Patent: August 12, 2014Assignee: Bridgestone CorporationInventors: Hiroshi Nakata, Hideaki Minowa
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Patent number: 8794285Abstract: A pneumatic tire for motorcycle is provided which can improve the traction performance especially during sharp cornering by largely leaning a vehicle (motorbike) followed by acceleration, and the stability during leaning of a vehicle in addition to enhancing steering stability at high speed. A pneumatic tire for motorcycle having a tread portion 11 formed in a circular shape, the tread portion 11 having a crown portion which has a spiral belt layer 3 in its inside in the radial direction of the tire, the spiral belt layer having an angle of 0 to 5° with respect to the circumferential direction of the tire and an arrangement width 0.5 to 0.Type: GrantFiled: November 20, 2009Date of Patent: August 5, 2014Assignee: Bridgestone CorporationInventor: Shinsaku Katayama
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Patent number: 8776853Abstract: A tire comprising at least one carcass-type reinforcing structure and comprising a crown reinforcing structure having at least one working layer.Type: GrantFiled: December 15, 2008Date of Patent: July 15, 2014Assignees: Michelin Recherche et Technique S.A., Compagnie Generale des Etablissements MichelinInventors: Luc Bestgen, Alain Valle
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Patent number: 8770246Abstract: A tire comprising a crown reinforcement which is itself capped radially with a tread, the crown reinforcement containing at least one layer of circumferential reinforcing elements distributed axially at a variable pitch. The layer of circumferential reinforcing elements comprising five parts, these being a central part, two intermediate parts and two axially exterior parts, the pitch in the central part being in the range between 1 and 1.5 times the pitch of the axially exterior parts and the pitch in an intermediate part being in the range between 1.6 and 2 times the pitch of the axially exterior parts.Type: GrantFiled: November 10, 2009Date of Patent: July 8, 2014Assignees: Michelin Recherche et Technique S.A., Compagnie Generale des Etablissements MichelinInventors: Christelle Chaulet, Richard Audigier, Chris Boyer
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Patent number: 8770245Abstract: In the manufacture of a tire, a belt structure is made by means of strip-like segments or elements, each comprising parallel cords embedded in an elastomeric layer, sequentially laid along the circumferential extension of a toroidal support, in such a manner that: each strip-like element is laid in a laying trajectory defining, at each point, a laying angle; at each point of the laying trajectory a laying gap is formed between adjacent strip-like elements, the laying trajectory being formed starting from preselected laying angles on the shoulder and on the crown of the tire, the laying gap between adjacent strip-like elements varying along at least one section of the laying trajectory between crown and shoulder so as to cause variation of the laying angle and to obtain the preselected angles on the shoulder and on the crown.Type: GrantFiled: December 22, 2008Date of Patent: July 8, 2014Assignee: Pirelli Tyre S.p.A.Inventors: Pierangelo Misani, Mariani Fiorenzo, Marco Cantu′
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Publication number: 20140174625Abstract: A tire having a modified geodesic belt is described. The ideal geodesic belt path is modified to select the centerline belt angle and to avoid excessive build up of the belt at the belt edges. The method includes the step of calculating the minimum three dimensional distance from one belt edge to the other belt edge preferably using dynamic successive approximation.Type: ApplicationFiled: March 11, 2013Publication date: June 26, 2014Inventors: Kiyoshi Ueyoko, Luis Antonio Cabrera, Loyda Mercedes Yerashunas, John Joseph Slivka, James Michael Hart
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Publication number: 20140158270Abstract: A pneumatic tire having a tread portion, buttress portions, sidewall portions and bead portions, includes bead cores positioned in the bead portions, respectively, a carcass extending from the tread portion through the sidewall portions to the bead cores in the bead portions, a belt layer formed over the carcass in a tire radial direction in the tread portion and including multiple belt plies, and clinch rubbers positioned over the carcass in a tire axial direction in the bead portions, respectively, and forming outer surfaces in the bead portions. Each of the belt plies has belt cords such that the belt cords are tilted at an angle of 15° to 45° with respect to a tire equator, and each of the clinch rubbers has a thickness in a range of 3 to 5 mm measured at a height of 25 mm from a bead base line in the tire radial direction.Type: ApplicationFiled: November 27, 2013Publication date: June 12, 2014Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventor: Tadao MATSUMOTO
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Patent number: 8746307Abstract: A pneumatic tire having a belt structure includes: a first belt layer; a second belt layer in a radially inner position with respect to the first belt layer, a third belt layer in a radially inner position with respect to the first and second belt layers, each belt layer including a plurality of elongated reinforcing elements disposed at a first, second and third belt angle respectively. The first and second belt angles have an absolute value of 15 to 40 degrees; the second angle is of opposite sign with respect to the first belt angle; and the third belt angle has an absolute value of 40 to 90 degrees and is of opposite sign with respect to the second belt angle. The belt structure also includes a zero degree belt layer placed in a radially outer position with repeat to the first belt layer including elongated reinforcing elements arranged such as to form a belt angle which is substantially zero.Type: GrantFiled: December 23, 2005Date of Patent: June 10, 2014Assignee: Pirelli Tyre S.p.A.Inventors: Guido Luigi Daghini, Stefano Bizzi
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Publication number: 20140138006Abstract: The invention provides a pneumatic tire which suppresses one-sided flow of a tire caused by ply steer without deteriorating uniformity. A tread rubber is formed by a ribbon rubber which is wound around a tire rotating axis continuously from a winding start end to a winding terminal end. Positions of the winding start end and the winding terminal end are different from each other in a tire width direction. In the case that a belt incline side is set to a side in which a cord of a belt ply in the outermost side in a tire diametrical direction among a plurality of belt plies is inclined to a tire peripheral direction, the ribbon rubber is wound in a posture in which the ribbon rubber is inclined to an opposite side to the belt incline side in relation to the tire peripheral direction.Type: ApplicationFiled: October 17, 2013Publication date: May 22, 2014Applicant: TOYO TIRE & RUBBER CO., LTD.Inventor: Yuji Inoue
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Patent number: 8720514Abstract: A tire comprising a hooping reinforcement, wherein the axial distance between neighboring portions of the hooping reinforcement is greater than or equal to 0.7 mm and smaller than or equal to 2 mm, with the exception of one first axial region L1 and two second axial regions L2. The axial distance of each of the axial ends of the first axial region L1 from the median plane is greater than or equal to 0.05·S and smaller than or equal to 0.15·S, S being the maximum axial width of the tire. The two regions L2 are provided on both sides of the median plane, each second axial region being centered at an axial distance D2 from the median plane, D2 being greater than or equal to 0.25·S and smaller than or equal to 0.4·S. Each second axial region L2 has an axial width W2 that is greater than or equal to 0.1·S. The sum of the axial widths of the first and second axial regions is smaller than or equal to 0.5·S.Type: GrantFiled: October 6, 2009Date of Patent: May 13, 2014Assignees: Michelin Recherche et Technique S.A., Compagnie Generale des Etablissements MichelinInventor: Nicolas Dautrey
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Publication number: 20140116596Abstract: This invention relates to tacky finishes and to the textile materials and articles treated with the tacky finishes. The tacky finishes provide improved processing features for end-use articles that contain such finishes. The tacky finish may be combined with other adhesion promotion finishes in the treatment of textile materials. The textile materials and articles may be used as rubber reinforcing materials, such as automotive tire cap ply, single end tire cord, carcass reinforcement and side wall reinforcement. End-use articles that contain the treated textile materials include rubber-containing materials such as automobile tires, belts, and hoses. This invention also relates to the methods for manufacturing the treated textile materials and articles.Type: ApplicationFiled: January 7, 2014Publication date: May 1, 2014Applicant: MILLIKEN & COMPANYInventors: Dany Michiels, Shulong Li, Sofie A. Christiaens
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Publication number: 20140083589Abstract: A radial tyre for a vehicle includes a crown with a tread having a radially outer part intended to contact a road surface; two beads; two sidewalls connecting the beads to the tread; a carcass reinforcement that extends into the sidewalls and is anchored in the beads; a crown reinforcement positioned circumferentially between the radially outer part of the tread and the carcass reinforcement; and an underlayer. The underlayer: is formed of a radially inner elastomer layer and has a formulation different from that of the radially outer part of the tread, is positioned circumferentially between the radially outer part of the tread and the carcass reinforcement; includes a thermoplastic elastomer that is a block copolymer formed of an elastomer block and a thermoplastic block, with a total content of the thermoplastic elastomer being within 65 to 100 phr (parts by weight per hundred parts of elastomer).Type: ApplicationFiled: May 4, 2012Publication date: March 27, 2014Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Vincent Abad, Emmanuel Custodero
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Patent number: 8678056Abstract: A tire with a radial carcass reinforcement comprising a crown reinforcement formed from at least two working crown layers of inextensible reinforcing elements and from at least one layer of circumferential reinforcing elements positioned radially between two working crown layers, the working crown layers adjacent to the layer of circumferential reinforcing elements being on each side of the equatorial plane and in the axial continuation of the layer of circumferential reinforcing elements coupled over an axial width, in order thereafter to be decoupled. A layer of polymer blend having a thickness greater than 1.5 mm over an axial width greater than 0.1×d is positioned axially between the axially exterior end of the layer of circumferential reinforcing elements and the axially interior end of the coupling zone of the working crown layers.Type: GrantFiled: September 1, 2008Date of Patent: March 25, 2014Assignees: Michelin Recherche et Technique S.A., Compagnie Generale des Etablissement MichelinInventors: Philippe Johnson, Alain Domingo
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Patent number: 8662128Abstract: A heavy duty tire comprises a belt disposed radially outside a carcass. The belt consists of a innermost first ply, a second ply and a outermost third belt ply. With respect to the tire equator, the cords of the first ply are laid at an angle ?1 of 15 to 25 degrees; the cords of the second ply are laid at an angle ?2 of 15 to 25 degrees; the cords of the third ply are laid at an angle ?3 of 45 to 60 degrees; the cords of the second ply are inclined oppositely to the cords of the first ply; the cords of the third ply are inclined to the same direction as the cords of the second ply; |?2??1| is not more than 5 degrees; |?3??2| is 30 to 45 degrees; the axial widths W1, W2 and W3 of the first, second and third belt plies, respectively, satisfy W1>W2>W3; strengths S1, S2 and S3 of the first, second and third belt plies, respectively, satisfy S1>S2>S3 and 1.0>S2/S1>=0.6.Type: GrantFiled: May 23, 2011Date of Patent: March 4, 2014Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Kiyoto Maruoka
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Patent number: 8662129Abstract: A pneumatic tire having pairs of shoulder section and bead section shear layers positioned on at least one axial side of the carcass layer. Examples include one or more of the shear layers constituted of an elastomeric fabric having elastomeric fibers woven in the fabric. Such fibers may be spandex fibers and the fabric may further be characterized as being woven additionally with nylon fibers in a tricot construction. Other embodiments include at least one of the shear layers constituted of a polyurethane type elastomer material having an MA1O of between 1 MPa and 350 MPa. Exemplary shoulder section and bead section shear layers in a pinch shocked region are opposite across an interior of the tire.Type: GrantFiled: March 6, 2009Date of Patent: March 4, 2014Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.Inventors: Benjamin I. Kaplan, Fanny Hosdez, Sébastien Rigo
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Publication number: 20140045410Abstract: A retreaded tire manufacturing method, which avoids forming the buffed surface always in the same position by buffing in tire retreading and the resulting drop in delamination resistance of new tread rubber, and tires suitably retreaded by this manufacturing method are provided. In this method, the tread rubber of a tire is abraded away circumferentially to form a tread application surface of the tire to which new tread rubber is applied. And the position where the tread application surface is formed is radially changed as the repeat count of retreading rises.Type: ApplicationFiled: April 16, 2012Publication date: February 13, 2014Applicant: BRIDGESTONE CORPORATIONInventor: Nobuki Karita
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Patent number: 8640753Abstract: A tire includes at least one structural element which includes at least one reinforcing element, which includes at least one hybrid yarn, the at least one hybrid yarn including a plurality of filaments obtained from at least one first multifilament yarn having a first initial tangent modulus and at least one second multifilament yarn having a second initial tangent modulus, the first and the second initial tangent modulus being different from each other, each one of the first and the second multifilament yarns including a plurality of individual filaments, the individual filaments of each one of the first and the second multifilament yarns being at least partially intermixed with each other. Preferably, the tire is a high performance or ultra high performance tire, or a tire suitable for being employed in sporting contests, such as, track motor races, or a tire suitable for sports utility vehicles.Type: GrantFiled: October 24, 2007Date of Patent: February 4, 2014Assignee: Pirelli Tyre S.p.A.Inventors: Barbara Rampana, Diego Tirelli, Udo Kuhlmann, Chokri Cherif, Christian Paul, Refah Ahmet Torun, Olaf Diestel
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Patent number: 8622105Abstract: A pneumatic tire comprises a tread-reinforcing band made of at least one spirally wound cord, wherein 2the band cord consists of materially identical high-strength high-modulus organic filaments, and the band cord is formed by first twisting each of filament bunches, subjecting the first twisted bunches to a dip-and-stretch treatment, and then twisting the treated bunches together, whereby the load-elongation curve of the band cord comprises a low-modulus zone and a high-modulus zone whose boundary point is in an elongation range of from 1 to 7%, and the ratio EH/EL of a nominal elastic modulus EH of the high-modulus zone and a nominal elastic modulus EL of the low-modulus zone is in a range of from 2.0 to 10.0. Therefore, high-modulus aramid cords, PEN cords and the like can be used to reduce the tire weight.Type: GrantFiled: December 21, 2011Date of Patent: January 7, 2014Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Touru Fukumoto
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Patent number: 8616256Abstract: A radial tire for a motorcycle capable of having high road grip performance both when running at a high speed on a dry road surface and when cornering at a high speed, together with the high speed durability, especially a radial tire for a motorcycle with a large displacement to be used for road races, capable of maintaining these performances until the end of the races, is provided. The tilting angles of the cords 13a of said cross-belt 13 are set to 60 degrees or more to the circumferential direction, and a belt protecting layer 15 is disposed outside the spiral-belt 14, the belt protecting layer 15 having cords arranged in the direction tilted at 70 degrees or more to the circumferential direction.Type: GrantFiled: November 9, 2006Date of Patent: December 31, 2013Assignee: Bridgestone CorporationInventor: Yukihiko Kubo
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Patent number: 8613299Abstract: A pneumatic tire having an impact resistant construction is provided. More specifically, a tire is provided that has increased resistance to travel conditions that can cause pinch shock. Reinforcements of a particular orientation are provided in portions of the tire where pinch shock typically occurs. A range of orientations for the cords used in such reinforcements is described.Type: GrantFiled: June 6, 2005Date of Patent: December 24, 2013Assignee: Michelin Recherche Et Technique S.A.Inventors: Christophe B. Rahier, Stéphane P. Callamand, Marc R. Favre, Jean-Michel C. Huyghe
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Publication number: 20130319593Abstract: Provided is a tire in which durability is improved without involving increase in the weight of the tire by the improvement of a reinforcing member. By the improvement of a reinforcing member used for a carcass ply or a reinforcing member for reinforcing a tread portion, a tire in which other performance are not compromised and the lightweight is attained is provided. Provided is a tire including a pair of left-and-right bead portions 11 and side wall portions 12 and a tread portion 13 bridging between both side wall portions 12. A reinforcing member 5 composed of a knitted fabric using a reinforcing cord is arranged in the tire circumferential direction in a ring-shape.Type: ApplicationFiled: February 28, 2012Publication date: December 5, 2013Applicant: BRIDGESTONE CORPORATIONInventors: Yoshihide Kouno, Seiji Kon
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Patent number: 8596319Abstract: A pneumatic tire provided with run-flat reinforcing layers 10 in left and right sidewall portions 2 that enable run-flat traveling. A tread reinforcing layer 12 formed from a thermoplastic resin or a thermoplastic elastomer composition including a blend of a thermoplastic resin component and an elastomer component is provided on an inner side of a tread portion 1.Type: GrantFiled: May 17, 2010Date of Patent: December 3, 2013Assignee: The Yokohama Rubber Co., Ltd.Inventor: Masakazu Mori
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Publication number: 20130312892Abstract: Radial tire having: a crown surmounted by a tread provided with at least one radially outer elastomer layer intended to come into contact with the road when the tire is rolling; two non-stretchable beads, two sidewalls connecting the beads to the tread, a carcass reinforcement passing into the two sidewalls and anchored in the beads; a crown reinforcement or belt positioned circumferentially between the carcass reinforcement and the tread; a radially inner elastomer layer, (tread “sublayer”), having a formulation different from the formulation of the radially outer elastomer layer, and positioned between the radially outer layer and the belt, wherein the sublayer comprises a rubber composition having at least from 30 to 100 phr of a nitrile/butadiene rubber having a content of butadiene units of between 40% and 90% by weight and more than 30 phr of a reinforcing filler.Type: ApplicationFiled: November 28, 2011Publication date: November 28, 2013Applicants: Michelin Recherche et Technique S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Didier Vasseur, Garance Lopitaux, Kyoko Kobayashi
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Publication number: 20130312891Abstract: A cord fabric is structured by weaving a weft yarn into a large number of warp yarn (2) disposed in parallel so that the weft yarn crosses the warp yarn at a coarse density. In the cord fabric, the warp yarn is a composite cord constituted of at least one aramid first twist yarn and one aliphatic polyamide first twist yarn, and the weft yarn is a spun yarn of meta system aramid fiber. The cord fabric is used as a strip material of a belt cover layer which is wound in a spiral pattern around an outer circumference of a belt layer of a pneumatic tire in a radial direction.Type: ApplicationFiled: February 4, 2012Publication date: November 28, 2013Applicant: The Yokohama Rubber Co., Ltd.Inventor: Miyuki Nakajima
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Publication number: 20130312886Abstract: The present invention provides a pneumatic radial tire of the present invention is characterized in that: in a cross sectional view in the tire widthwise direction in the predetermined state thereof, provided that: i) Hout represents a distance in the tire radial direction between the maximum width position from the tire equatorial plane and a ground-contact end on the vehicle outer side of the tread and Hin represents a distance in the tire radial direction between the maximum width position from the tire equatorial plane and a ground-contact end on the vehicle inner side of the tread, Hout<Hin; ii) radius of curvature (Rout)of a tire side portion on the vehicle outer side, at the maximum width position thereof, is smaller than radius of curvature (Rin) of a tire side portion on the vehicle inner side, at the maximum width position thereof; and iii) a negative ratio of a ground-contact surface in a vehicle-outer side half portion of the tread is smaller than a negative ratio of a ground-contact surface inType: ApplicationFiled: February 22, 2012Publication date: November 28, 2013Applicant: BRIDGESTONE CORPORATIONInventor: Yasuaki Ohno
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Publication number: 20130306212Abstract: An object of the present invention is to provide: a patch rubber for repairing a radial tire, which patch rubber is capable of preventing troubles from occurring at an early stage in a repaired radial tire to enhance durability of the repaired radial tire; a method for repairing a radial tire by using the patch rubber; and a radial tire repaired by the patch rubber.Type: ApplicationFiled: February 17, 2012Publication date: November 21, 2013Applicant: BRIDGESTONE CORPORATIONInventor: Yoshinobu Shouyama
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Patent number: 8584724Abstract: A pneumatic tire having a reduced weight and improved durability is provided. In this pneumatic tire, at least one of the carcass ply and belt plies or the belt-reinforcement layer is constituted of reinforcing cords being para-aramid cords, and the para-aramid cords satisfy the relationship represented by the following formulae (I) to (III): E?32.14×T?236??(I) E?150??(II) T?19??(III) (where E represents a modulus of elasticity (cN/dtex) at 25° C. under a load of 49 N, and T represents a tensile strength (cN/dtex)).Type: GrantFiled: November 22, 2007Date of Patent: November 19, 2013Assignee: Bridgestone CorporationInventor: Hiroyuki Yokokura
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Patent number: 8584723Abstract: The present invention enhances noise performance and anti-uneven wear performance. A pneumatic tire 1 includes a belt layer 7 including at least one belt ply in which belt cords 15 are arranged at an angle of 10 to 40° with respect to a tire equator C. A tread pattern formed on a surface of the tread portion 2 includes a pitch line 22 in which at least two kinds of pattern-constituting units 21 having different pitches in a circumferential direction of the tire are arranged in the circumferential direction of the tire. The belt cords 15 are arranged relatively densely on an inner side of the pattern-constituting unit 21 having a small pitch, and relatively thinly on an inner side of the pattern-constituting unit 21 having a large pitch.Type: GrantFiled: November 24, 2009Date of Patent: November 19, 2013Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Masayuki Sakamoto
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Publication number: 20130299057Abstract: A pneumatic tire includes a tire body having a crown portion and a pair of sidewalls. At least one reinforcing belt is disposed in the crown portion of the tire. A tag is carried by the reinforcing belt. In one embodiment, the tag is disposed in the location of one of the reinforcing cords that is disposed in the reinforcing belt. In another embodiment, the tag is disposed at the splice of the reinforcing belt. An alternative version of the tire has the tag carried in a depression formed in the outer surface of the tire sidewall. The tag may be encapsulated with an encapsulation material that is also disposed in the depression.Type: ApplicationFiled: July 16, 2013Publication date: November 14, 2013Inventor: James P. Kleckner
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Patent number: 8578990Abstract: A pneumatic low aspect ratio truck has a crown reinforcing structure 7. The crown reinforcing structure 7 has a first steel belt ply 9 between the at least one carcass ply 3 and the tread 5, a second steel belt ply 11 between the first belt ply 9 and the tread 5, a third steel belt ply 13 between the second steel belt ply 11 and the tread 5 and a fourth steel belt ply 15 between the third steel belt ply 13 and the tread 5. The crown reinforcing structure 7 additionally has at least one circumferential steel strip 17 between the second and the third belt plies 11, 13.Type: GrantFiled: March 2, 2011Date of Patent: November 12, 2013Assignee: The Goodyear Tire & Rubber CompanyInventors: Roland Willibrord Krier, Francois Pierre Georges, Jean-Michael Alphonse Fernand Gillard
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Patent number: 8578988Abstract: A pneumatic tire having a carcass and a belt reinforcing structure wherein the belt reinforcing structure is a composite belt structure having at least one radially inner spiral layer and at least one zigzag belt reinforcing structure located radially outward of said spiral layer. The zigzag belt width is preferably wider than the spiral layer.Type: GrantFiled: August 20, 2010Date of Patent: November 12, 2013Assignee: The Goodyear Tire & Rubber CompanyInventors: Kiyoshi Ueyoko, Robert John Boehlefeld
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Patent number: 8578989Abstract: A motorcycle tire having a transverse curvature ratio f/C?0.2 and a sidewall height ratio (H?f)/H?0.7, has a belt structure provided with a belt layer including at least one filiform reinforcing element arranged to form a plurality of windings parallel to one another at a substantially zero angle relative to the equatorial plane of the tire. The available elongation of the belt in an intermediate zone between the equatorial plane, and the shoulder is greater than the available elongation corresponding to the equatorial plane. The aforementioned intermediate zone extends at least in a range centered on a camber angle of ±35°.Type: GrantFiled: May 28, 2008Date of Patent: November 12, 2013Assignee: Pirelli Tyre S.p.A.Inventors: Mario Mariani, Stefania Masciullo, Pierangelo Misani
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Publication number: 20130269853Abstract: A pneumatic tire 1 includes: a tread 2; sidewalls 3; a carcass 5; and a belt 6. A distribution of a thickness Tg(y) of the tread in a region extending in an axially outward direction of the tire, is represented by equation Tg(y)=A?a×Ct(y). A represents a thickness of the tread at a crown center 17. Ct(y) represents a distribution of a displacement of the tread surface in a radially inward direction of the tire, in a region from the crown center to an end portion of the belt. a represents a coefficient selected from a range of values that are greater than or equal to 0.10, and are not greater than 0.35. A displacement Cc(y) of the carcass 5 in the radially inward direction of the tire, in a region extending in the axially outward direction of the tire from the crown center, is represented by equation Cc(y)=(1?a)×Ct(y).Type: ApplicationFiled: April 3, 2013Publication date: October 17, 2013Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.Inventor: Kazuo ASANO
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Patent number: 8550134Abstract: The present invention is directed to a pneumatic tire 1, in particular a low aspect ratio super single truck tire 1. In accordance with the invention, the tire has a crown reinforcing structure with a first breaker 9 between a carcass ply 3 and a tread 5, as well as four further breakers 11, 13, 15, 17 comprising at least one pair of working breakers between the first breaker 9 and the tread 5, wherein the first breaker 9 is a split breaker comprising two circumferential strips 9 essentially adjacent to the shoulders of the tire, each strip having an axial width comprised between 50% and 70% of the half tread width.Type: GrantFiled: March 2, 2011Date of Patent: October 8, 2013Assignee: The Goodyear Tire & Rubber CompanyInventors: Jean-Michel Alphonse Fernand Gillard, Roland Willibrord Krier, Francois Pierre Georges
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Publication number: 20130240105Abstract: An elastomer product containing a linear textile structure for reinforcement. In order to preserve the environment and resources with a constant product quality, the linear textile structure contains fibers made of polyamide 10.10.Type: ApplicationFiled: January 2, 2013Publication date: September 19, 2013Applicant: Continental Reifen Deutschland GmbHInventors: Peter Zmolek, Ulrich Speckhals, Joern Krueger, Carole Justine
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Patent number: 8528613Abstract: A pneumatic tire includes two cross belts having codes forming 5 to 30 degrees to a tire circumferential direction; a circumferential reinforcing layer having a width smaller than the cross belts, and having codes forming 0 to 5 degrees to the tire circumferential direction; and a carcass located inside, in a tire diameter direction, relative to a cross belt being inside among the cross belts. At 100% internal inflation pressure, a distance X1 between an equatorial plane and an outer edge of the circumferential reinforcing layer is 60% to 75% of a distance W between the equatorial plane and an outermost section of the carcass, and at 5% internal inflation pressure, a distance Y between the equatorial plane and a separation section of the carcass and a belt outwardly adjoining the carcass is 95% to 105% of a distance X2 between the equatorial plane and the outer edge.Type: GrantFiled: May 12, 2008Date of Patent: September 10, 2013Assignee: The Yokohama Rubber Co., Ltd.Inventor: Satoru Isobe
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Publication number: 20130220505Abstract: Metal cord with a plurality of concentric layers, of the type rubberized in situ, i.e. a cord that is rubberized from the inside, during its actual manufacture, with a rubber known as a filling rubber, in which all or some of the gaps situated between the wires of the cord contain a thermoplastic elastomer of the unsaturated type, particularly an unsaturated thermoplastic stirene (TPS) elastomer such as an SBS, SBBS, SIS or SBIS block copolymer for example. Such a thermoplastic elastomer, used in the molten state, presents no problems of parasitic stickiness if the filling rubber overspills out of the cord following manufacture; its unsaturated and therefore (co)vulcanizable nature makes it extremely compatible with the diene rubber matrices, notably natural rubber matrices as conventionally used as calendering rubber in the metal fabrics intended for reinforcing tires.Type: ApplicationFiled: May 6, 2011Publication date: August 29, 2013Applicants: Michelin Recherche et Technique S.A., Compagnie Generale Des Etablissements MichelinInventors: Thibaud Pottier, Sébastien Rigo, Jérémy Toussain
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Publication number: 20130220508Abstract: The invention relates to a tire with a radial carcass reinforcement comprising a crown reinforcement, itself radially capped with a tread comprising at least two circumferentially continuous cutouts, the said tread being connected to two beads via two sidewalls. According to the invention, the crown reinforcement comprises at least one axially discontinuous layer consisting of at least two bands each formed of at least one multilayer laminate, the said laminate comprising at least one multiaxially stretched thermoplastic polymer film positioned between and in contact with two layers of rubber composition, and, in a meridian plane, the axial ends of each of the said bands being respectively axially on the outside of each of the axially outermost points of one same circumferentially continuous cutout.Type: ApplicationFiled: September 20, 2011Publication date: August 29, 2013Applicants: Michelin Recherche Et Technique S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventor: Laurent Cercy
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Patent number: 8517072Abstract: A tire having a circumferential tread, at least one belt, an inner liner, a pair of sidewalls, at least one carcass ply, and a pair of bead portions. The pair of bead portions each further includes a bead core, a bead filler having an upper end, a chaffer, and a gum strip. The chaffer extends axially outward from the inner liner towards the sidewall and curves radially upward along an axially outer portion of the bead core. The sidewall gum strip extends radially upward from a curved portion of the chaffer, wherein the sidewall gumstrip is located axially between the at least one carcass ply turn-up end and a sidewall.Type: GrantFiled: February 4, 2010Date of Patent: August 27, 2013Assignee: Bridgestone Americas Tire Operations, LLCInventors: Bradley J Harris, Chris A Swartzwelder
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Publication number: 20130206311Abstract: Provided is a tire having a circular tire frame formed of at least a thermoplastic resin material, in which the tire includes a reinforcing cord member that forms a reinforcing cord layer on an outer circumference of the tire frame, and the thermoplastic resin material contains at least a polyester-based thermoplastic elastomer.Type: ApplicationFiled: August 25, 2011Publication date: August 15, 2013Applicant: BRIDGESTONE CORPORATIONInventors: Hiroyuki Fudemoto, Takashi Harada, Yoshihide Kouno, Seiji Kon, Keiichi Hasegawa, Munenori Iizuka, Takayuki Yako
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Publication number: 20130206307Abstract: Provided is a pneumatic radial tire for aircraft that includes a radial carcass constituting a backbone structure of the tire, a belt (6) disposed along an outer periphery of a crown region of the radial carcass, and at least one protective layer (7) disposed along an outer periphery of the belt (6) and formed by a plurality of cords (9). The cords (9) in the protective layer (7) are curved in a sinusoidal shape and disposed in parallel with equal phase. An acute inclination angle ? between an amplitude center line of each cord (9) relative to a tire circumferential direction, a half amplitude a of each cord (9), and a wavelength ? of each cord (9) satisfy the relationship: tan ?>2?a/?>0.4 (0°<?<90°).Type: ApplicationFiled: August 25, 2011Publication date: August 15, 2013Applicant: BRIDGESTONE CORPORATIONInventor: Daisuke Itami
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Publication number: 20130206306Abstract: An improvement of an airplane tire to obtain a more even distribution of temperature within the crown of the tire. An airplane tire comprises a crown reinforced by a working reinforcement (3), comprising at least one layer of working reinforcement (30) comprising axially juxtaposed substantially circumferential strips (31) comprising mutually parallel textile reinforcing elements (32) coated with a polymer coating material (33). Each strip of at least one layer of working reinforcement is in contact, over at least its radially inner axial face, with a heat transfer element (34) comprising mutually parallel substantially circumferential threadlike elements (35) made of a heat-conducting material with thermal conductivity at least equal to 50 times the thermal conductivity of the polymer coating material. Heat transfer element (34) comprises substantially circumferential threadlike elements (35) that have periodic geometric oscillations parallel to the strip in contact.Type: ApplicationFiled: July 5, 2011Publication date: August 15, 2013Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Vincent Estenne, Laurent Bucher
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Patent number: 8505601Abstract: Provided is a pneumatic radial tire including a main belt layer and at least one circumferential-direction reinforcement layer, which are provided in the tread portion. The main belt layer includes two belt layers in which steel cords are disposed in a manner that the steel cords of a first one of the two belt layers intersect the steel cords of a second one of the two belt layers. In the circumferential-direction reinforcement layer, steel cords are disposed in a substantial tire circumferential direction. The ratio Wo/Wm of the width Wo of the circumferential-direction reinforcement layer to the maximum width Wm of the main belt layer is 0.5 to 0.9. The ratio Ee/Ec of the reinforcement-cord elastic modulus Ee of the steel cords in the edge portions of the circumferential-direction reinforcement layer to the reinforcement-cord elastic modulus Ec of the steel cords in the center portion of the circumferential-direction reinforcement layer is not less than (0.85?0.5 Wo/Wm) and not more than 0.8.Type: GrantFiled: May 31, 2006Date of Patent: August 13, 2013Assignee: The Yokohama Rubber Co., Ltd.Inventor: Shinya Harikae
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Publication number: 20130199689Abstract: An improvement in an airplane tire to obtain a more even distribution of temperature within the crown of the tire. An airplane tire comprises a crown reinforced by a working reinforcement (3), comprising at least one layer of working reinforcement (30) made up of axially juxtaposed substantially circumferential strips (31) made up of mutually parallel textile reinforcing elements (32) coated with a polymer coating material (33). Each strip is in contact, over at least its radially inner axial face, with a heat transfer element (34) comprising at least one heat-conducting material with thermal conductivity at least equal to 50 times the thermal conductivity of the polymer coating material. The product of the thickness of a heat transfer element by the tension modulus of a heat transfer element is at most equal to 0.3 times the product of the thickness of the strip by the tension modulus of the strip.Type: ApplicationFiled: July 5, 2011Publication date: August 8, 2013Applicants: Michelin Recherche et Technique S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Vincent Estenne, Laurent Bucher
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Patent number: 8499808Abstract: A tire comprising a carcass-type reinforcement structure formed from reinforcing elements anchored on each side of the tire to a bead, the base of which is intended to be mounted on a rim seat, each bead being extended radially outwards by a sidewall, the sidewalls joining, radially outwards, a tread and having, beneath the tread, a crown reinforcement structure consisting of at least two layers of reinforcing elements called working layers, said reinforcing elements of the working layers being of identical nature. In a given circumferential plane, the extensional stiffness per unit width of a first working layer measured along the principal direction of the reinforcing elements of said first layer is strictly higher than the extensional stiffness per unit width of a second working layer measured along the principal direction of the reinforcing elements of said second working layer, the second working layer being radially further away from the carcass structure than said first working layer.Type: GrantFiled: February 20, 2007Date of Patent: August 6, 2013Assignee: Michelin Recherche et Technique S.A.Inventors: Francis Bordoz, Yannick Gerbal
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Patent number: 8490667Abstract: Driving stability and durability is efficiently improved. Since a protecting layer 43 embedded with reinforcing cords 41 is disposed between a tread 35 and a belt reinforcing layer 31, both of the protecting layer 43 and the belt reinforcing layer 31 decentrally bear a large bending force generated when a pneumatic tire 11 runs on a sharp projection or a difference in level. As a result, even if reinforcing elements 33 in the belt reinforcing layer 31 are extended by large tension due to fill internal pressure, increase of strain generated in the reinforcing elements 33 can be effectively suppressed.Type: GrantFiled: January 24, 2008Date of Patent: July 23, 2013Assignee: Bridgestone CorporationInventors: Makoto Ishiyama, Masafumi Koide