Characterized By The Structure Of The Bead Portion Of The Tire Patents (Class 152/539)
  • Patent number: 11124030
    Abstract: Provided is a pneumatic tire comprising a tread section, a side wall section, and a bead section. A tire constituent member is provided in at least the tread section, extending along the tire circumferential direction and spliced at any positions in the tire circumferential direction. A belt-shaped sound-absorbing member is adhered to a region corresponding to the tread section in the tire inner surface, along the tire circumferential direction and via an adhesive layer. The sound-absorbing member is arranged intermittently along the tire circumferential direction. Sections where the sound-absorbing member is missing are arranged at positions corresponding to the splice portions of the tire constituent member and the sound-absorbing member is arranged so as to not overlap the splice portions.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: September 21, 2021
    Inventor: Atsushi Tanno
  • Patent number: 10889658
    Abstract: A tire manufacturing method includes making a master batch, using the master batch to make a rubber composition, and making a green tire. The master batch is made wherein a carbon-black-containing pre-coagulation rubber latex is coagulated to obtain a coagulum; a compound according to Formula (I) is added to the water-containing coagulum; wherein R1 and R2 each indicates a hydrogen atom, an alkyl group having 1 to 20 carbons, an alkenyl group having 1 to 20 carbons, or an alkynyl group having 1 to 20 carbons, R1 and R2 may be the same or different, and M+ indicates sodium ion, potassium ion, or lithium ion; and the compound according to Formula (I) is dispersed within the coagulum. The green tire is provided with unvulcanized rubber sheeting made up of the rubber composition, chafer(s), carcass ply or plies, and bead filler(s).
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: January 12, 2021
    Assignee: TOYO TIRE CORPORATION
    Inventor: Takashi Miyasaka
  • Patent number: 10875360
    Abstract: A pneumatic tire includes a tread, side walls, beads, a carcass, a belt layer, an inner-liner layer, and a sealant layer. The inner-side surface of the inner-liner layer to which the sealant layer is adhered has profile that satisfies L1<L2<L3, L1?5 mm, L2?9.5 mm, and L3?11 mm, where L1, L2 and L3 represent heights in a radial direction measured from a base height point to the inner-side surface of the inner-liner layer at positions located in an axially inward direction from an axial outer edge of the belt layer by 5%, 10% and 15% of a maximum width of the belt layer, and the base height point is a point on an axial-direction line through the intersection where a radial-direction line passing through the axial outer edge of the belt layer intersects the inner-side surface of the inner-liner layer.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: December 29, 2020
    Assignee: SUMITOMO RUBBER INDUSTRIES LTD.
    Inventor: Naoki Yukawa
  • Patent number: 10434736
    Abstract: A strip rubber adhering apparatus includes a rotating drum; an extruder configured to extrude strip rubber of a shape having an apex portion in cross section toward the drum; a pressure bonding roller configured to press a surface of the strip rubber on the apex portion side in the direction of the drum, and adhere the surface of the strip rubber on a side opposite to the apex portion side to the drum; and a blowing apparatus configured to supply wind toward the surface of the strip rubber on the apex portion side in the vicinity of a position of adhesion of the strip rubber with respect to the drum, wherein the drum and the extruder are relatively movable in the direction of axis of the drum with respect to each other.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: October 8, 2019
    Assignee: TOYO TIRE CORPORATION
    Inventor: Syuuichi Nishikawa
  • Patent number: 10189315
    Abstract: The pneumatic tire having a vehicle inner/outer orientation when mounted on a vehicle includes: protrusions provided on a vehicle inner side on a tire side portion in a tire circumferential direction; and a plurality of recesses provided on a vehicle outer side on a tire side portion, wherein the height of projection of the protrusions from the tire side portion is more than 4 mm and not more than 10 mm, the protrusions are formed elongated and the bending rigidity in a lateral direction satisfies a range not less than 0.1 MPa·mm4 and not more than 10,000 MPa·mm4.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: January 29, 2019
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Yuji Kodama, Masataka Koishi
  • Patent number: 10124630
    Abstract: A normal rim 48 includes a flange 54. The flange 54 forms an outer circumferential bent surface 60 that is bent with a radius Rr of curvature. A first reference line L1 represents a straight line that extends through a center point Pr of the radius Rr, and that is tilted by an angle of 45°. In a state where the tire is inflated to a normal internal pressure and is under 120% of a normal load, Te represents a thickness from an inner cavity surface to an outer surface of the clinch, Tf1 represents a thickness of a filler, Tc1 represents a thickness of the clinch, Ta1 represents a thickness obtained by the thickness Tf1 and the thickness Tc1 being added, and the thicknesses are measured along the first reference line L1, and a ratio (Ta1/Te) of the thickness Ta1 to the thickness Te is greater than 0.4.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: November 13, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Aiko Yamamoto, Kazuma Mori
  • Patent number: 10071604
    Abstract: A pneumatic vehicle tire has a carcass with at least one carcass ply. The surface of the carcass ply has an overlay made of an electrically conductive rubber mixture. The overlay extends continuously from an electrically conductive bead base to a superstructure and contacts the superstructure. A method for making a pneumatic vehicle tire includes the steps of making a carcass ply, covering a surface of the carcass ply with a continuous overlay made of an electrically conductive rubber mixture. The overlay contacts an electrically conductive bead base and the superstructure in the finished pneumatic vehicle tire.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: September 11, 2018
    Assignee: Continental Reifen Deutschland GmbH
    Inventor: Udo Frerichs
  • Patent number: 10040323
    Abstract: A pneumatic tire includes an elastomeric casing. The elastomeric casing includes a crown portion, opposing sidewalls, and bead areas that are formed along the sidewalls in spaced relation to the crown portion. The bead areas include at least one bead reinforcing element, such as a bead core and/or a bead filler, that is at least partially formed from carbon fibers. A method of manufacturing a pneumatic tire assembly is also included.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 7, 2018
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventors: Jon I. Stuckey, Justin E. Hayes, Kent D. Weatherwax
  • Patent number: 10017009
    Abstract: A tire is provided with a tire frame member that is made from resin and includes: a bead portion; a side portion that is connected to an outer side of the bead portion in a tire radial direction and that has hole portions formed at intervals in a tire circumferential direction; and a crown portion that is connected to an inner side of the side portion in a tire width direction and that has a tread disposed thereon.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: July 10, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Yoshihide Kouno, Seiji Kon
  • Patent number: 9796218
    Abstract: Improving endurance of bead of radial tire for heavy vehicle. Tire has two beads (2) contacting rim (3) connected by carcass reinforcement (4) having carcass layer (5), with main part (6) wrapped, in each bead (2), axially from inside towards outside of the tire, around bead wire (7) having diameter (L), to form turnup (8) having free end (E). Each bead (2) has filling element (9) with filling compound (10) and extending radially towards outside from bead wire (7) and axially between turnup (8) and main part (6). The distance (I) between turnup (8) and main part (6) decreases continuously from bead wire (7) as far as a first minimum distance (a) reached at a first point (A) of turnup (8), then increases continuously from the first point (A) of turnup (8) as far as a first maximum distance (b) reached at a second point (B) of turnup (8).
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: October 24, 2017
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Michelin Recherche et Technique S.A.
    Inventor: Athanase Kollias
  • Patent number: 9744813
    Abstract: A tire for a heavy vehicle with a radial carcass reinforcement anchored in two beads by wrapping around bead wires. In a radial plane, radially on the inside of the radially innermost point of the at least one layer of carcass reinforcement and axially on the outside of the geometric center of the bead wire, the radius of curvature at a point on the exterior surface of the bead is greater than the radius of curvature at the point of orthogonal projection of the point of the exterior surface of the bead onto the at least one layer of carcass reinforcement.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: August 29, 2017
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Michelin Recherche et Technique S.A.
    Inventor: Daniel Potier
  • Patent number: 9499013
    Abstract: The present invention provides a pneumatic tire 1, comprising: a carcass ply including a main body portion 11a extending across respective bead cores 9 and turn-up portions 11b each turned up around the bead cores 9 from the main body portion 11a; a bead filler 13; and a side rubber 5a, wherein: a tip portion on the outer side in the tire radial direction of the outer end 13a of the bead filler 13, of each of the turned-up portions 11b, extends to a position of at least 5 mm distance from the outer end 13a of the bead filler with maintaining distance of 1 mm or less between the main body portion 11a and itself; a turn-up end 11c is disposed on the inner side in the tire widthwise direction than a neutral axis of bending of a bead portion 7 and a corresponding sidewall portion 5 and at 10%-40% height of a tire cross sectional height SH of the tire; and the side rubber 5a, disposed on the outer side in the tire widthwise direction of the main body portion 11a and each turn-up portion 11b, covers the turn-up end
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: November 22, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Yasuaki Ohno
  • Patent number: 9126458
    Abstract: In the present invention, a carcass (120) of a pneumatic tire (1A) comprises a toroidal-shaped carcass main body (121) and a carcass folded part (122) folded at a bead core (111). A bead filler (131) is disposed outward of the bead core (111) in the tire radial direction. A rubber sheet (132) is disposed outward of the bead filler (131) in the tire radial direction. A space (DA) is formed between the tire radial direction outer side end (131a) of the bead filler (131) and the tire radial direction inner side end (132b) of the rubber sheet (132).
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: September 8, 2015
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Massimo Mangia, Toshiki Nagai
  • Patent number: 9027618
    Abstract: A mounted assembly of a wheel and a tire. The tire inflation pressure is greater than 9 bar, and a relative deflection of the tire greater than 30%. The rim comprises a drop-center functionality and is of monobloc type. A carcass reinforcement includes a circumferential alignment of carcass reinforcement elements anchored in the beads by a stack of circumferentially oriented reinforcement elements, and by an anchoring rubber mix having an elasticity modulus of less than 30 MPa at 10% deformation.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: May 12, 2015
    Assignees: Compagnie Generale des Etablissement Michelin, Michelin Recherche et Technique, S.A.
    Inventor: Christian Monnerie
  • Patent number: 9000092
    Abstract: The invention relates to a rubber composition that is free of zinc or that contains less than 0.5 phr of zinc, which can be used for the manufacture of tires, based on at least: one diene elastomer; one sulphur-based crosslinking system; one inorganic filler as reinforcing filler; one blocked mercaptosilane of general formula I below: (R3O)R2R1—Si—Z—S—C(?O)-A in which: R1 and R2, which are identical or different, represent a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; R3 represents a monovalent hydrocarbon-based group chosen from linear or branched alkyls having from 1 to 4 carbon atoms; A represents hydrogen or a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; Z represents a divalent bonding group comprising from 1 to 18 carbon atoms.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: April 7, 2015
    Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.
    Inventors: Laure Belin, Karine Longchambon, José Carlos Araujo Da Silva
  • Patent number: 8973637
    Abstract: A pneumatic tire is described having a triangular shaped apex which extends radially outward of the bead core, and wherein the apex is formed of at least two zones. Each zone is formed of a different material, wherein the first zone extends from the base of the apex to the tip of the apex, and the second zone is located adjacent the ply. The zones are preferably formed by extrusion to form one cohesive apex. The first zone is formed of a material having a G?/G? ratio in the range of about 0.155 to about 0.183. The second zone is formed of a material having a G?/G? ratio in the range of about 0.125 to about 0.133.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: March 10, 2015
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Philip Carl Van Riper
  • Patent number: 8973636
    Abstract: Tire (10) for a heavy goods vehicle comprising a radial carcass reinforcement (60) anchored in each of the beads (50) to an anchoring structure (700), comprising a circumferential reinforcement (70), the carcass reinforcement (60) being partially wrapped around the anchoring structure (700), the tire (10) also comprising a coupling reinforcement (150) comprising a first part (151) in contact with the carcass reinforcement (60) and being extended by a second part (152) in contact with the anchoring structure (700) as far as a point (157) radially on the outside of the anchoring structure (700), located axially between the axially inner-most point (702) and the axially outermost point (704) of the anchoring structure (700), the tire (10) also comprising a stiffening reinforcement (160) surrounding the coupling reinforcement (150) and running radially on the inside of the anchoring structure (700) and of the coupling reinforcement (150), in which the axially outside end point (166) of said stiffening reinforceme
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: March 10, 2015
    Assignees: Michelin Recherche et Technique S.A., Compagnie Generale des Etablissements Michelin
    Inventors: Philippe Johnson, Bopha Grisin, Olivier Lenepveu
  • Publication number: 20150059954
    Abstract: A pneumatic tire includes a pair of axially spaced apart annular bead structures, a carcass structure wrapped around each bead structure and having a pair of carcass turnups substantially contiguous with the carcass structure from the bead structure to radially outer ends of the pair of carcass turnups, a belt structure disposed radially outward of the carcass structure in a crown area of the pneumatic tire, an overlay structure disposed radially outward of the belt structure, and a component comprising a non-adhesive core structure and a coating applied to the core structure with the coating providing adhesion to a surrounding matrix for the core structure.
    Type: Application
    Filed: August 27, 2013
    Publication date: March 5, 2015
    Applicant: The Goodyear Tire & Rubber Company
    Inventors: Robert Edward Lionetti, Olivier Marcel Eugene Durand, John Woods, Raphael Beck
  • Patent number: 8967214
    Abstract: A wind-up side cord of a chafer is arranged in such a manner that an angle of inclination of a first line connecting a first point and a second point with respect to a tire circumferential direction is 20 to 40 degrees, and is formed as a circular arc shape which is convex to an outer side in the tire radial direction, a turn-up side cord of the chafer is arranged in such a manner that an angle of inclination of a second line connecting a third point and a fourth point with respect to the tire circumferential direction is 30 to 50 degrees, and is equal to or less than 5 degrees in a change of the angle of inclination with respect to the tire circumferential direction, and a distance in the tire circumferential direction from a fifth point to the first line is 2 to 12 mm.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: March 3, 2015
    Assignee: Toyo Tire & Rubber Co., Ltd.
    Inventor: Norihiko Kodama
  • Patent number: 8960253
    Abstract: A technique for improving the durability of the beads of a radial tire for a heavy vehicle of the civil engineering type, by reducing the rate of spread of cracks initiated at the turned-back end of carcass reinforcement and the spread through the coating, edge-binding and filler polymer materials.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: February 24, 2015
    Assignees: Compagne Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.
    Inventor: Lucien Bondu
  • Publication number: 20150041039
    Abstract: A pneumatic tire includes a carcass reinforced by a carcass ply extending from a first bead to a second bead, at least one belt ply disposed radially outward of the carcass ply in a crown portion of the pneumatic tire, and a bead reinforcement disposed adjacent the first bead and the second bead. The bead reinforcement includes at least one hybrid cord having at least one first core yarn with at least one second aramid wrap yarn wrapped around the first core yarn such that the first core yarn has a modulus less than a modulus of the second wrap yarn.
    Type: Application
    Filed: August 7, 2013
    Publication date: February 12, 2015
    Applicant: THE GOODYEAR TIRE & RUBBER COMPANY
    Inventors: Laurent Roger Andre Dubos, Mahesh Kavaturu, Marie Charlotte Chaidron, Walter Kevin Westgate, Mahmoud Cherif Assaad
  • Publication number: 20150027609
    Abstract: Provided are: a tire mold including a bead portion molding surface for molding the bead portion of the tire, the bead portion molding surface having a ridge molding part including a recessed groove extending in the mold radial direction, the ridge molding part being formed in a flange contact portion molding region for molding a rim-flange contact portion of the tire; and a pneumatic tire, in which a bead filler has the tire radial direction outer end positioned more inward in the tire radial direction relative to the rim line position, and a ridge forming portion including a ridge extending in the tire radial direction is formed on the outer surface of the bead portion, the ridge forming portion being positioned in the rim flange contact portion.
    Type: Application
    Filed: February 12, 2013
    Publication date: January 29, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Takahiro Uchida
  • Publication number: 20150020944
    Abstract: A pneumatic tire includes a pair of axially spaced apart annular bead cores, each bead core comprising a plurality of metal wraps, each bead core having a radial cross-sectional shape; and a single carcass ply reinforced with polyester cords, the single carcass ply being folded about each bead core, the carcass ply having a main portion that extends between the bead cores and turnup portions that are folded around the bead cores, the polyester cords having a construction of 2000-2000 dtex/½ 8-10/8-10 tpi and 20-30 epi.
    Type: Application
    Filed: July 17, 2013
    Publication date: January 22, 2015
    Applicant: The Goodyear Tire & Rubber Company
    Inventors: Douglas Andrew Till, Daniel Ray Beha, Kelly Sue King, Christopher John Weiler
  • Patent number: 8905101
    Abstract: A run flat tire where: the ratio of the cross-sectional height on the inner side in the radial direction to the cross-sectional height on the outer side in the radial direction, having the maximum tire width in a state inflated to an air pressure as a boundary; the inclination angle of the outer wall in the upper region of the side wall portion; the curving form of the tread surface; the position of the carcass folded over end; the height of the bead filler; the relationship between the thickness of the outer side rubber taken on a line normal to the rim line and the maximum thickness of the outer side rubber in an upper region of the bead portion; and the relationship of the thickness of the inner side rubber and the thickness of the outer side rubber taken on a line normal to the rim line are stipulated.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: December 9, 2014
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Kenji Horiuchi
  • Patent number: 8887776
    Abstract: A pneumatic tire has a nonconductive tread rubber constructing an outer surface of a tread portion, a nonconductive side wall rubber constructing an outer surface of a side wall portion, and a rim strip rubber constructing an outer surface of a bead portion. The pneumatic tire has a conductive sheet formed by a conductive rubber. The conductive sheet reaches the rim strip rubber from the tread rubber while passing between a carcass and the side wall rubber, and terminates without being exposed to the outer surface of the bead portion. The rim strip rubber is partitioned into a nonconductive rubber portion and a conductive rubber portion, and the conductive rubber portion is connected to the conductive sheet and is exposed to a bead bottom surface.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: November 18, 2014
    Assignee: Toyo Tire & Rubber Co., Ltd.
    Inventor: Yoshinori Asayama
  • Patent number: 8869856
    Abstract: A pneumatic tire capable of reducing rolling resistance and discharging static electricity generated during running, wherein each of a tread rubber, a breaker rubber, and a sidewall rubber formed on the tread part, the breaker part, and the sidewall part, respectively, has a volume specific resistivity of 1×108 ?·cm or more, the pneumatic tire further including a conduction rubber embedded in the tread part so as to be at least partially exposed to a surface of the tread part, bead part rubber disposed at a region contacting a rim flange of the bead part, and electroconductive rubber electrically connecting the conduction rubber to the beat part rubber, wherein each of the conduction rubber, the bead part rubber, and the electroconductive rubber has a volume specific resistivity of less than 108 ?·cm.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: October 28, 2014
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Tetsuya Kunisawa, Keiichi Nakadera, Toru Iizuka, Takao Wada, Shinichi Miyazaki, Toshiro Matsuo
  • Publication number: 20140311649
    Abstract: A heavy duty pneumatic tire includes a clinch portion extending from the sidewalls to the beads. A concave curved surface extends on an outer surface of the clinch portion in a circumferential direction. A convex curved surface is engageable with the concave curved surface. A ratio R1/R2 of a radius of curvature of the concave curved surface to a radius of curvature of the convex curved surface, satisfies 1.7?R1/R2?3.9, a ratio D1/R2 of a depth of the concave curved surface to the radius of curvature of the convex curved surface satisfies 0.05?D1/R2?0.09, and the radius of curvature R1 of the concave curved surface and the radius of curvature R2 of the convex curved surface are each a radius of curvature of an arc on a cross section as taken along a plane including a center axis of the tire.
    Type: Application
    Filed: October 1, 2012
    Publication date: October 23, 2014
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yukihide Oya
  • Patent number: 8826956
    Abstract: A pneumatic tire having a pair of bead portions; bead cores each having a polygonal cross section; a radial carcass having respective ends wound around the corresponding bead cores from the inner to outer side; one layer of wire chafer disposed outwardly of the radial carcass relative to the bead core; and a rubber chafer in a contact area between the bead portion and a prescribed rim, wherein, in a cross section of the tire assembled with the prescribed rim, the angle between the bottom side of the bead core and a bead seat of the prescribed rim is in the range of 0±2°, and a portion, on the tire outer surface side, of an outermost layer filament of steel cords constituting the wire chafer extends at an angle in the range of 90±5° relative to the extending direction of ply cords of the radial carcass.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: September 9, 2014
    Assignee: Bridgestone Corporation
    Inventor: Akira Sasaki
  • Patent number: 8813804
    Abstract: Tire (10) for a heavy goods vehicle comprising a radial carcass reinforcement (60) anchored in each of the beads (50) to an anchoring structure (700), comprising a circumferential reinforcement (70), the carcass reinforcement (60) being partially wrapped around the anchoring structure (700), the tire (10) also comprising a coupling reinforcement (150) comprising a first part (151) in contact with the carcass reinforcement (60) and being extended by a second part (152) in contact with the anchoring structure (700) as far as a point (157) radially on the outside of the anchoring structure (700), located axially between the axially innermost point (702) and the axially outermost point (704) of the anchoring structure (700), the tire (10) also comprising a stiffening reinforcement (160) surrounding the coupling reinforcement (150) and running radially on the inside of the anchoring structure (700) and of the coupling reinforcement (150), wherein the axially outside end point (166) of said stiffening reinforcement
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: August 26, 2014
    Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.
    Inventors: Philippe Johnson, Bopha Grisin, Olivier Lenepveu
  • Patent number: 8807183
    Abstract: A heavy duty tire comprises: a bead filler disposed radially outside a bead core and axially outside a carcass main portion; a bead-reinforcing layer made of steel cords; and a chafer made of a rubber extending along the bead bottom surface. The chafer rubber has a complex elastic modulus in a range of 8 to 12 MPa and a 100% modulus in a range of 4.0 to 5.5 MPa. In the bead-reinforcing layer, the steel cord count is 25 to 40/5 cm, the steel cord diameter is 0.8 to 1.2 mm, and the cord angle is 30 to 60 degrees with respect to the tire radial direction. The bead filler comprises a main filler made of a low modulus rubber and a fastening filler made of a high modulus rubber. The fastening filler has an L-shaped cross sectional shape and comprises an axially-extending base portion and a radially-extending axially inner portion. The main filler has a part wedged between the base portion and axially inner portion of the fastening filler.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: August 19, 2014
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Kiyoto Maruoka
  • Publication number: 20140174626
    Abstract: A green pneumatic tire comprising a tire cavity; first and second sidewalls extending respectively from first and second tire bead regions to a tire tread region; and a cable embedded into a rubber material of the green tire for allowing a creation of an air passageway in the tire after curing the green tire in a tire mold is disclosed. The cable comprises a core of a first material and a shell of a second material, wherein the shell surrounds the core. Also, a method of manufacturing a pneumatic tire comprising an air passageway is disclosed.
    Type: Application
    Filed: February 26, 2013
    Publication date: June 26, 2014
    Applicant: The Goodyear Tire & Rubber Company
    Inventors: Francesco Sportelli, Etienne Besnoin, Anne Therese Peronnet-Paquin, Raphael Beck, Massimo Di Giacomo Russo, Daniel Paul Luc Marie Hinque, Gilles Bonnet, Andreas Frantzen
  • Publication number: 20140150950
    Abstract: The invention relates to improving the endurance of a bead of a radial tire for a heavy vehicle of construction plant type by reducing the compression to which the turn-up is subjected when the tire is driven on.
    Type: Application
    Filed: June 6, 2012
    Publication date: June 5, 2014
    Applicant: COMPAGNIE GENERALE DES ESTABLISSEMENTS MICHELIN
    Inventors: Olivier Ferlin, François Harle
  • Publication number: 20140144567
    Abstract: Provided is a pneumatic tire having laminated reinforcement layers with organic fiber over a bead core, and in the layer, a rubber-coated organic fiber cord is tilted to the center line of the bead core in a transverse section and is spirally coiled, in which each organic fiber cord in an inner and outer adjacent reinforcement layers over the bead core extends such that an organic fiber cord in the inner reinforcement layer and an organic fiber cord in the outer reinforcement layer intersect each other relative to the center line of the bead core in the transverse section, in which in the inner reinforcement layer, the cord is coiled with space at least partially in a tire circumferential direction such that the cord does not overlap in the tire circumferential direction, and the outer reinforcement layer is arranged to cover at least a part of the space.
    Type: Application
    Filed: July 24, 2012
    Publication date: May 29, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Keiichi Mita
  • Patent number: 8720515
    Abstract: A tire with a radial carcass reinforcement comprising a crown reinforcement, itself radially capped by a tread strip, the said tread strip being connected to two beads via two sidewalls, the carcass reinforcement being anchored in each of the beads to form an anchorage region. The tire additionally comprises, in part of at least each of the anchorage regions, at least two layers formed by circumferential winding of a complex strip formed of two layers consisting of continuous reinforcing elements passing from one layer to the other, the said reinforcing elements being parallel within a layer and crossed from one layer to the other at angles with respect to the circumferential direction that are identical in terms of absolute value.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: May 13, 2014
    Assignees: Michelin Recherche et Technique S.A., Compagnie Generale des Etablissements Michelin
    Inventors: Michael Cogne, Agnes Degeorges
  • Publication number: 20140124118
    Abstract: The present invention provides a pneumatic tire having a bead core embedded in a bead portion of the tire, the bead core being constituted of a strand as a rubber-coated single bead wire wound around the bead portion to be juxtaposed in plural columns in the axial direction and stacked in plural rows in the radial direction to form a torus structure, characterized in that: the bead core as the torus structure is constituted of two columns of the bead wire juxtaposed in the axial direction; a winding-start end and a winding-terminal end of the bead wire are situated at the outermost rows in the radial direction of the corresponding columns thereof, respectively; and at least one of an interval between the winding-start end and an inner peripheral layer adjacent to the winding-start end of the bead wire and an interval between the winding-terminal end and an inner peripheral layer adjacent to the winding-terminal end of the bead wire is larger than any other intervals between two adjacent bead wires of the bead
    Type: Application
    Filed: June 20, 2012
    Publication date: May 8, 2014
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shogo Wada, Toshiya Miyazono
  • Patent number: 8714221
    Abstract: A pneumatic tire 2 includes a tread 4, a pair of sidewalls 6, a pair of beads 8, and a carcass 10. In the pair of beads 8, each bead 8 includes a core 30 and a bead filler 32 extending outward from the core 30 in the radial direction. A minimal value ?a of the inclination angle of the bead filler 32 is greater than or equal to 30 degrees, and is not greater than 44 degrees. A ratio Wa/Wb of a width Wa of the bead filler 32 to a width Wb of a bead portion is greater than or equal to 0.30, and is not greater than 0.45.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: May 6, 2014
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Shinichi Matsuura
  • Patent number: 8701729
    Abstract: A pneumatic radial tire has a carcass ply which extends between bead cores arranged in a pair of bead portions. The carcass ply is wound up to an outer side in a tire radial direction around the bead cores. A chafer is arranged in such a manner as to wrap around the carcass ply from an inner side to an outer side in a tire width direction, around the bead core. An inner end of the chafer positioned in the inner side in the tire width direction is arranged in the outer side in the tire radial direction than a winding end of the carcass ply. A reinforcing rubber tapering off toward the outer side in the tire radial direction is provided adjacently to the outer side in the tire radial direction of the inner end of the chafer.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: April 22, 2014
    Assignee: Toyo Tire & Rubber Co., Ltd.
    Inventor: Norihiko Kodama
  • Patent number: 8695666
    Abstract: A pneumatic radial tire has a pair of opposing bead portions 14, each bead portion 14 has a bead core 23 and a bead apex 24; at least one carcass reinforcing ply 12 having radially oriented steel cords 22, the at least one carcass reinforcing ply 12 has a main portion 18 and two turnups 20, one turnup 20 extending from each end of the main portion 18 and having a terminal end 21, the carcass reinforcing ply main portion 18 extends between the opposing bead cores 23 and turnups 20 are located axially outward of the bead core 23 and a portion of the bead apex 24; and two pairs of steel cord reinforced chippers, one pair adjacent each turnup, each pair having one inner chipper 40 being adjacent and on an axially inner side of the turnup 20 and one outer chipper 30 being adjacent on an axially outer side of the turnup 20, the inner and outer chippers 40, 30 being adjacent the turnup 20 each have a terminal end 41, 31 extending radially outward of the terminal end 21 of the turnup 20.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: April 15, 2014
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Peter Johann Cornelius Maus
  • Patent number: 8695667
    Abstract: Method of manufacturing a tire comprising a carcass reinforcement extending between beads, this carcass reinforcement being anchored in each bead by being wrapped around each circumferential bead reinforcement to form a turned-back portion, this carcass reinforcement comprising at least one rubber ply which is reinforced with a plurality of metal cords of low or zero permeability, each bead comprising a plurality of rubber-based strips, at least one of these strips, known as the bead rubber strip, radially on the outside of the circumferential bead reinforcement performing a function of filling and mechanical connection between the carcass reinforcement and its turned-back portion, this bead rubber strip comprising a first surface axially towards the inside in contact with the carcass reinforcement and a second surface axially towards the outside, each bead further comprising at least one other strip, known as the filler strip which, radially on the outside of the radially outermost points of the turned-back
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: April 15, 2014
    Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.
    Inventors: Michael Cogne, Laurent Nadreau, Niclas Seidel, Robert Veyret
  • Publication number: 20140090765
    Abstract: A pneumatic tire has a bead filler, a carcass ply, a side wall rubber and a rim strip rubber. The rim strip rubber has a main portion arranged in an outer side in a tire width direction of the bead filler, and a thin portion arranged between the carcass ply and the side wall rubber. The main portion forms an outer surface of a bead portion. The thin portion extends in the tire diametrical direction at a substantially fixed thickness. An upper end of the thin portion is positioned in an outer side in the tire diametrical direction than an upper end of the bead filler and in an inner side in the tire diametrical direction than a roll-up end of the carcass ply.
    Type: Application
    Filed: October 1, 2013
    Publication date: April 3, 2014
    Applicant: TOYO TIRE & RUBBER CO., LTD.
    Inventor: Ichiro Shima
  • Patent number: 8672011
    Abstract: There is provided a rubber composition for a bead apex which can enhance extrusion processability by optimizing a rate of vulcanization during a vulcanization process, and can improve rigidity, steering stability and a low fuel consumption property, a tire having a bead apex prepared by using the rubber composition for a bead apex and being capable of enhancing steering stability and reducing rolling resistance and a tire for a sports utility vehicle (SUV) having further enhanced durability. The rubber composition for a bead apex comprises a diene rubber, a phenol resin and/or a modified phenol resin, sulfur, hexamethylenetetramine, a vulcanization accelerator, and at least one kind of vulcanization acceleration auxiliary selected from the group consisting of a citraconimide compound, a condensate of alkyl phenol and sulfur chloride, an organic thiosulfate compound and a compound represented by the general formula: R1—S—S-A-S—S—R2.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: March 18, 2014
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Tatsuya Miyazaki
  • Publication number: 20140062054
    Abstract: A tire rim for a rolling apparatus with wheels mounted with a camber. The rim comprises a first shoulder having a first diameter, a second shoulder having a second diameter, and a main body arranged for connecting spoke elements, wherein the first diameter is larger than the second diameter. By having the first diameter of the first shoulder larger than the second diameter of the second shoulder the restrains of the tire at the first shoulder will be different than the restrains of the tire at the second shoulder. By mounting a wheel, comprising the tire rim according to the invention, with a camber, wherein the first and second shoulder have a substantially similar distance to the floor, the tire may be supported substantially more opposite to the floor.
    Type: Application
    Filed: August 29, 2012
    Publication date: March 6, 2014
    Applicant: BOBERGO B.V.
    Inventor: Martijn Schaaper
  • Patent number: 8662129
    Abstract: 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: Grant
    Filed: March 6, 2009
    Date of Patent: March 4, 2014
    Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.
    Inventors: Benjamin I. Kaplan, Fanny Hosdez, Sébastien Rigo
  • Patent number: 8640754
    Abstract: A side wall reinforced run flat tire, wherein a second carcass layer that does not reach a bead core is disposed along the outer peripheral surface of a carcass layer. A position of an outer peripheral edge of a bead filler, a relationship between a rubber thickness Gc of the inner side and a rubber thickness Ga of an outer side taken on the line X normal to the rim line and centered on the carcass layer, a relationship between the rubber thicknesses Ga and Gb of the side wall rubber in an upper region of a bead portion, and a position of a folded up end of the carcass layer are each stipulated.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: February 4, 2014
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Kenji Horiuchi
  • Patent number: 8622106
    Abstract: A pneumatic tire includes a carcass ply extending from one bead structure to another bead structure. Each bead structure includes a plurality of circumferentially wound metal wires defining a cross-sectional profile of a bead. The profile has a radial height to axial width ratio greater than 1.0 and a bead orientation angle between 30 degrees and 60 degrees.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: January 7, 2014
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Peter Johann Cornelius Maus, Nizar Toumni, Herve Marcel Henri Beauguilte
  • Publication number: 20130340910
    Abstract: The present invention prevents core deformation at a time of mounting a tire on a rim while corrosion resistance and air-leak resistance are assured in a tire made with a inner molding process. A bead core comprises axially inner and outer core pieces, and a radially inner end part of a carcass ply is held therebetween. The axially inner and outer bead pieces are composed of a spiral-wound body in which a bead wire has been spirally wound and overlapped. The bead wire comprises a core part in which core strands have been twisted together and a sheath part in which sheath strands have been twisted together around the core part. The core strands and/or the sheath strands comprise an embossed strand. The twisting direction and twisting pitch (Pc) of the core strands are the same as the twisting direction and twitching pitch (Ps) of the sheath strands.
    Type: Application
    Filed: January 30, 2012
    Publication date: December 26, 2013
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Dong Miao
  • Patent number: 8613299
    Abstract: 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: Grant
    Filed: June 6, 2005
    Date of Patent: December 24, 2013
    Assignee: Michelin Recherche Et Technique S.A.
    Inventors: Christophe B. Rahier, Stéphane P. Callamand, Marc R. Favre, Jean-Michel C. Huyghe
  • Publication number: 20130299058
    Abstract: A tire intended to be mounted on a drop-center rim with a flange height G and a radius of curvature R1, comprising a first and a second bead, each comprising at least one annular reinforcing structure having a radially innermost point, the radial distance between the radially innermost point and the mounting rim being denoted by A; a carcass reinforcement anchored in the two beads by being turned back around the annular reinforcing structure so as to form, within each bead, a main strand and a turned-back strand, in which the first bead has a thickness EB1 and the second bead has a thickness EB2, the thicknesses EB1 and EB2 defined as the distance separating (i) the point on the main strand that is at a distance R from said point, where R=G+R1/2?A, and (ii) the point on the exterior surface of the bead that is at this same distance R from said point, and in which the absolute value of the difference between the thicknesses EB1 and EB2 is greater than or equal to 1 mm.
    Type: Application
    Filed: November 14, 2011
    Publication date: November 14, 2013
    Applicants: Michelin Recherche et Technique S.A., Compagne Generale des Etablissements Michelin
    Inventors: Pascal Pirotte, Christophe Egerszegi
  • Patent number: 8578987
    Abstract: A run-flat tire (12) comprising: a crown; two sidewalls (40); two beads (50) each one comprising at least one annular reinforcing structure (60); a carcass reinforcement (71, 72) anchored in each of the beads by wrapping it around the annular reinforcing structure so as to form an incoming portion (711) extending from the crown through the sidewalls towards the bead and a wrapped-around portion (712); and at least one sidewall insert (80); at least one sidewall of the tire further comprising at least one additional sidewall reinforcement (90) positioned axially on the inside of the carcass reinforcement and extending radially at least between a radial height H1 of 30 mm, H1 being measured from the radially innermost point of the annular reinforcing structure; and a radial height H2 equal to 30% of the height H of the tire; and a layer (110) of polymeric composition positioned between the additional sidewall reinforcement and the carcass reinforcement.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: November 12, 2013
    Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.
    Inventor: François Hottebart
  • Patent number: 8578991
    Abstract: A pneumatic tire has a carcass structure extending through a pair of opposing bead portions and an inner liner located inward of the carcass structure, each bead portion comprising a bead core about which is wrapped the carcass structure and a toeguard. Each bead portion has a bead toe, a bead base, and a bead heel, the bead base extending between the bead toe and the bead heel. The bead heel has a profile corresponding to a sector of an ellipse or approximates a sector of an ellipse by having a dual radius structure. The bead base may have a dual taper configuration. The bead core may be substantially centered in the bead portion, as determined by the material thickness at three locations about the bead core.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: November 12, 2013
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Michael David Kachner, Thulasiram Gobinath, David Louis Winter, Kelly Sue King, Michael Christopher Kulton, John Patrick Roman, Judy Ann Birt, Randall Raymond Brayer, Sr., Robert Allen Losey, Ching-Chih Lee