Flipper Strips Patents (Class 152/542)
  • Patent number: 11325420
    Abstract: Provided is an aircraft tire which has both satisfactory light weight and satisfactory separation durability of carcass ply ends. An aircraft tire (10) includes a pair of bead cores (1), and a carcass (2) extending between the pair of the bead cores (1).
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: May 10, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Kiichiro Suzumori
  • Patent number: 11260704
    Abstract: A pneumatic tire mountable on a 15° tapered specified rim includes a bead core, a carcass, a steel cord reinforcing layer, a bead rubber layer, an organic fiber reinforced layer, and a first reinforcing rubber layer. A distance from a second line segment to a third line segment is from 4 mm to 12 mm, a complex modulus of the first reinforcing rubber layer is from 6 MPa to 10 MPa, an elongation at break of the first reinforcing rubber layer is from 300% to 450%, and a difference between a first height and a second height is from 3 mm to 15 mm.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: March 1, 2022
    Inventor: Koji Nishio
  • Patent number: 10384489
    Abstract: A pneumatic vehicle tire having a radial carcass, an at least single-layer belt and a tread that is composed of two layers, a tread cap and a tread base, which are made from different rubber mixtures, in a radial direction, the tread base having a central portion and two lateral portions that extend at least in a radially outward direction from an axial perspective. The two lateral portions are made from a rubber mixture that has a lower dynamic modulus of elasticity E? at 55° C. in accordance with DIN 53513 (measured at an extension of 8%) and a lower hysteresis than the central portion of the tread base for a lower rolling resistance without worsening the handling behavior of the vehicle tire.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: August 20, 2019
    Assignee: Continental Reifen Deutschland GmbH
    Inventors: Heiner Volk, Reinhard Ludwig, Christian Weber
  • Patent number: 10189310
    Abstract: An airless tire includes a tread ring, a hub and a spoke. The tread ring includes a tread rubber layer, a first reinforcing cord layer on radial direction inner side of the tread layer, a second reinforcing cord layer on radial direction inner side of the first cord layer, and a shear rubber layer between the cord layers, the cord layers have array layers including reinforcing cords, and topping rubber portions covering the array layers, each topping portion has an inner portion adjacent to the shear layer, and an outer portion, and the topping portion(s) has the inner portion formed of a composition including a rubber component which includes a butadiene rubber in content rate of 10 to 100% by mass, an ?, ?-unsaturated carboxylic acid metal salt in amount of 10 to 80 parts by weight with respect to 100 parts by mass of the component, and a peroxide.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: January 29, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Wako Iwamura, Makoto Sugiya, Katsumi Terakawa, Kazuyoshi Shiga
  • Patent number: 10011149
    Abstract: A self-repairing inflatable article including an inflatable component that includes an interior surface and an exterior surface, a sealed flexible package adjacent to the inflatable component, and a sealant composition disposed in the sealed flexible package. The sealed flexible package is configured to release the sealant composition upon puncture, tearing or other breach of the inflatable component.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: July 3, 2018
    Inventor: Carolyn M. Dry
  • Patent number: 9630456
    Abstract: The invention relates to improving the endurance of the beads of a radial tire for a heavy vehicle of construction plant type, by reducing the cracking that starts at the surface of contact between a first polymer filling material that is radially furthest towards the inside and in contact with the bead wire and a second polymer filling material that is radially on the outside of the first polymer filling material. According to the invention, a transition element, made of a polymer transition material, is in contact, via its radially inner face, with the first polymer filling material and is in contact, via its radially outer face, with the second polymer filling material, and the elastic modulus at 10% elongation of the polymer transition material is somewhere between the respective elastic moduluses at 10% elongation of the first and second polymer filling materials.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: April 25, 2017
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventor: Lucien Bondu
  • Patent number: 9290062
    Abstract: A tire having two beads, with a toroidal body ply wound about the two beads to form two turn-ups, and two bead fillers, each contacting a bead and are partly enclosed inside a turn-up of the body ply. The bead filler includes a first elastomer ring, which is initially placed flat and between the body ply, and a bead, which is turned up about the bead when forming the corresponding turn-up of the body ply, to bring two opposite ends of the first elastomer ring into close proximity. The bead filler is cured, after being turned up about the bead, to connect the two opposite ends of the first elastomer ring, while at the same time eliminating the air trapped inside the turn-up of the body ply.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: March 22, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Philip Heijnen
  • Patent number: 9254718
    Abstract: A pneumatic radial tire includes three or less steel belt layers, wherein a first block and a second block extending in an outer side than the first block are alternately provided in a tire circumferential direction on a ground edge region of a tread part. An annular region extending in a circumferential direction is provided on the outer surface of an outer side than a maximum width position in a side wall part, and plural projections are provided side by side on the annular region. An outer thin wall part continuing along an outer circumferential edge of the annular region and an inner thin wall part continuing along an inner circumferential edge of the annular region are provided, and the outer thin wall part is arranged adjacent to an inner radius height and inside of the inner radius height.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: February 9, 2016
    Assignee: TOYO TIRE & RUBBER CO., LTD.
    Inventor: Masaaki Ohara
  • Patent number: 9108471
    Abstract: 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 surface of contact between a first filler polymer material (23a) which is radially innermost and in contact with the bead wire core (22) and a second filler polymer material (23b) radially on the outside of the first filler polymer material. A transition element (24), made of a transition polymer material, of contact thickness (e), is in contact, via its radially internal face (24a), with the first filler polymer material (23a) and in contact, via its radially external face (24b), with the second filler polymer material (23b), and the elastic modulus at 10% elongation of the transition polymer material is somewhere between the respective elastic moduli at 10% elongation of the first and second filler polymer materials.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: August 18, 2015
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Michelin Recherche et Technique S.A.
    Inventor: Lucien Bondu
  • Patent number: 9027620
    Abstract: A tire containing a pair of beads, at least one carcass ply extending from one bead to the other bead forming a pair of sidewall areas of the tire and a tread area of the tire, and at least one layer of a knit fabric in the sidewall area of the tire, where the knit fabric has a warp and weft direction and is a double cord stitch knit fabric. A method of making the fabric and tire are also disclosed.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: May 12, 2015
    Assignee: Milliken & Company
    Inventors: Dominique Cinget, Purushothama Kini Ullal, Johann Peschek, Franck Catteau
  • 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
  • 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
  • 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: 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: 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
  • Publication number: 20130306213
    Abstract: A tire includes a circumferential tread, at least one belt, and a pair of sidewalls, with each sidewall forming an outermost point of a side of the tire. The tire further includes a pair of bead portions and at least one carcass ply extending circumferentially about the tire from one bead portion to the other. The tire also has a chafer having a first portion radially below the bead portion and the carcass ply, and a second portion axially outward from the bead portion and the carcass ply, wherein the sidewall is located radially below the first portion of the chafer and axially outward from the second portion of the chafer. A sidewall gum strip extends radially upward from the second portion of the chafer. The sidewall gum strip is located axially between the carcass ply turn-up end and at least a portion of the chafer.
    Type: Application
    Filed: July 23, 2013
    Publication date: November 21, 2013
    Applicant: Bridgestone Americas Tire Operations, LLC
    Inventors: Bradley J. HARRIS, Christopher A. Swartzwelder
  • Patent number: 8528614
    Abstract: A pneumatic tire includes: a pair of bead portions 11; bead cores 12 each having a polygonal configuration in cross section; a radial carcass 13 having respective ends thereof wound around the corresponding bead cores from the inner side to the outer side of the tire; one layer of wire chafer 14 disposed on the outer side of the radial carcass 13 with respect to the bead core 12; and a rubber chafer 16 disposed in a contact area between the bead portion 11 and a prescribed rim R, wherein, in a cross section of the tire assembled with the prescribed rim R, the angle formed by the bottom side 12a of the bead core with respect to a bead seat Ra of the prescribed rim R is set in the range of 0±2°, and a portion, on the tire outer surface side, of a spiral filament or an outermost layer filament of steel cords 15 constituting the wire chafer 14 extends at an angle in the range of 90±5° with respect to the extending direction of ply cords constituting the radial carcass 13.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: September 10, 2013
    Assignee: Bridgestone Corporation
    Inventor: Akira Sasaki
  • Publication number: 20130183483
    Abstract: A reinforced rubber article containing a rubber article and a fibrous layer embedded into the rubber article. The fibrous layer contains monoaxially drawn tape elements having at least a first layer, an upper surface and a lower surface. The first layer comprises a blend of polyester and nylon 6. Methods of forming the reinforced rubber article are also disclosed.
    Type: Application
    Filed: January 17, 2012
    Publication date: July 18, 2013
    Inventors: Sujith Nair, Charles W. Prestridge, Joseph R. Royer, Ines El-Majid, Johann Peschek
  • Publication number: 20130146202
    Abstract: 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 surface of contact between a first filler polymer material (23a) which is radially innermost and in contact with the bead wire core (22) and a second filler polymer material (23b) radially on the outside of the first filler polymer material. A transition element (24), made of a transition polymer material, of contact thickness (e), is in contact, via its radially internal face (24a), with the first filler polymer material (23a) and in contact, via its radially external face (24b), with the second filler polymer material (23b), and the elastic modulus at 10% elongation of the transition polymer material is somewhere between the respective elastic moduli at 10% elongation of the first and second filler polymer materials.
    Type: Application
    Filed: December 7, 2010
    Publication date: June 13, 2013
    Applicants: Michelin Recherche et Technique S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventor: Lucien Bondu
  • Patent number: 8448684
    Abstract: The present invention is directed to a pneumatic tire comprising at least one component selected from the group consisting of apexes, flippers and chippers, the at least one component comprising a rubber composition, the rubber composition comprising a diene based elastomer and from 1 to 30 parts by weight, per 100 parts by weight of elastomer (phr), of a polybenzobisoxazole (PBO) short fiber having a length ranging from 0.5 to 20 mm having a thickness ranging from 10 to 30 microns, and from 1 to 50 phr of an epoxidized polyisoprene having a number-average molecular weight of 5000 to 100000.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: May 28, 2013
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Ralf Mruk, Serge Julien Auguste Imhoff, Julia Martine Francoise Claudine Tahon, Annette Lechtenboehmer, Frank Schmitz
  • Patent number: 8448683
    Abstract: A heavy duty pneumatic tire comprises a carcass ply of steel cords turned up around a bead core in each bead portion so as to form a pair of turned up portions and a main portion therebetween. The steel cords of the carcass ply are rubberized with a topping rubber having a hardness Ht1 of from 68 to 90 degrees. The bead core is composed of: a bead core main made of windings of a steel wire; a rubber coating penetrating into the bead core main and having a hardness Hb of from 78 to 90 degrees; and a bead core wrapping layer surrounding the bead core main and composed of at least one ply of parallel organic fiber cords rubberized with a topping rubber having a hardness Ht2 of from 70 to 90 degrees. The fineness of each of the organic fiber cords of the bead core wrapping layer is in a range of from 940 to 4200 dtex. The distances between the organic fiber cords of the bead core wrapping layer is in a range of from 0.3 to 1.4 mm.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: May 28, 2013
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Kazumi Yamazaki
  • Patent number: 8418737
    Abstract: The present invention is directed to a pneumatic tire comprising at least one component selected from the group consisting of apexes, flippers and chippers, the at least one component comprising a rubber composition, the rubber composition comprising a diene based elastomer and from 1 to 30 parts by weight, per 100 parts by weight of elastomer (phr), of a polybenzobisoxazole (PBO) short fiber having a length ranging from 0.5 to 20 mm having a thickness ranging from 10 to 30 microns, and from 1 to 50 phr of an epoxidized polyisoprene having a number-average molecular weight of 5000 to 100000.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: April 16, 2013
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Ralf Mruk, Serge Julien Auguste Imhoff, Julia Martine Francoise Claudine Tahon, Annette Lechtenboehmer, Frank Schmitz
  • Patent number: 8413700
    Abstract: A tire having a circumferential tread, at least one belt, an inner liner, a pair of sidewalls, and at least three carcass plies. The tire includes a pair of bead portions, each including a bead core, a bead filler, a flipper, a chafer, and a gum strip. The at least three carcass plies extend radially downward, inward of the bead filler, extend around the bead core, and continue upward, outward of the bead filler and terminate in at least three turn-up ends. At least one of the turn-up ends does not contact at least one of the radially downward extending carcass plies, the flipper, or the bead filler in one of the sidewalls, and at least two of the turn-up ends contact at least one of the radially downward extending carcass plies, the flipper, or the bead filler in one of the sidewalls.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: April 9, 2013
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventors: Todd A Buxton, Bradley J Harris, Taro Iwamoto, Christopher A Swartzwelder
  • Publication number: 20130061997
    Abstract: A tire containing a pair of beads, at least one carcass ply extending from one bead to the other bead forming a pair of sidewall areas of the tire and a tread area of the tire, and at least one layer of a knit fabric in the sidewall area of the tire, where the knit fabric has a warp and weft direction and is a double cord stitch knit fabric. A method of making the fabric and tire are also disclosed.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 14, 2013
    Inventors: Dominique Cinget, Purushothama Kini Ullal, Johann Peschek, Franck Catteau
  • Publication number: 20130032266
    Abstract: A reinforced rubber article comprising a rubber article and a fibrous layer embedded into the rubber article. The fibrous layer comprises monoaxially drawn fibers having at least a first layer, where the first layer contains a polymer and a plurality of voids. The voids are in an amount of between about 3 and 15 percent by volume of the first layer. Methods of forming the reinforced rubber article are also disclosed.
    Type: Application
    Filed: August 3, 2011
    Publication date: February 7, 2013
    Inventors: Sujith Nair, Padmakumar Puthillath, Johann Peschek, Charles W. Prestridge
  • Publication number: 20130034718
    Abstract: A reinforced rubber article containing a rubber article and a fibrous layer embedded into the rubber article. The fibrous layer contains monoaxially drawn tape elements having a rectangular cross-section and at least a first layer having a draw ratio of at least about 5, a modulus of at least about 2 GPa, a density of at least 0.85 g/cm3. The first layer contains a polymer selected from the group consisting of polyamide, polyester, and co-polymers thereof. Methods of forming the reinforced rubber article are also disclosed.
    Type: Application
    Filed: August 3, 2011
    Publication date: February 7, 2013
    Inventors: Sujith Nair, Padmakumar Puthillath, Johann Peschek, Charles W. Prestridge
  • Publication number: 20130032267
    Abstract: A reinforced rubber article comprising a rubber article and a fibrous layer embedded into the rubber article. The fibrous layer contains monoaxially drawn fibers having at least a first layer, where the first layer contains a polymer, a plurality of void-initiating particles, and a plurality of voids. Methods of forming the reinforced rubber article are also disclosed.
    Type: Application
    Filed: August 3, 2011
    Publication date: February 7, 2013
    Inventors: Sujith Nair, Padmakumar Puthillath, Charles W. Prestridge, Johann Peschek
  • Publication number: 20130032268
    Abstract: A tire containing a pair of beads, at least one carcass ply extending from one bead to the other bead forming a pair of sidewall areas of the tire and a tread area of the tire, and at least one layer of a knit fabric in the sidewall area of the tire.
    Type: Application
    Filed: August 2, 2011
    Publication date: February 7, 2013
    Inventors: Dominique Cinget, Purushothama Kini Ullal, Johann Peschek, Franck Catteau
  • Patent number: 8261796
    Abstract: The present invention is directed to a pneumatic tire comprising at least one component, the at least one component comprising a rubber composition, the rubber composition comprising a diene based elastomer and from 1 to 30 parts by weight, per 100 parts by weight of elastomer, of a polybenzobisoxazole (PBO) short fiber having a length ranging from 0.5 to 20 mm and a thickness ranging from 10 to 30 microns, and from 1 to 30 parts by weight, per 100 parts by weight of elastomer, of an epoxidized palm oil.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: September 11, 2012
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Ralf Mruk, Serge Julien Auguste Imhoff, Julia Martine Francoise Claudine Tahon, Annette Lechtenboehmer, Frank Schmitz
  • Patent number: 8220512
    Abstract: A tire with two beads (11) and a radial carcass reinforcement (12) anchored in each bead by an upturn (15) which forms at least one loop around a circumferential bead reinforcement (13), said upturn—when viewed in meridian section—beginning at a point of origin (A1) that corresponds to the point of intersection between the carcass reinforcement and a line (D) perpendicular to the tire's rotation axis and passing through the radially innermost point (A) of the circumferential bead reinforcement (13). A feature of the tire is that when viewed in meridian section, the end (F) of the upturn (15) is located between said upturn (15) of the carcass reinforcement and the circumferential bead reinforcement (13).
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: July 17, 2012
    Assignee: Michelin Recherche et Technique S.A.
    Inventor: Olivier Ferlin
  • Patent number: 8186405
    Abstract: A heavy-load radial tire includes a bead apex rubber 8 composed of a high-elastic lower apex portion 11 and a low-elastic upper apex portion 12. The lower apex portion 11 has an L-shaped cross section composed of a bottom piece portion 11a disposed along the radially outer surface of a bead core 5 and a standing piece portion 11b standing from the axially inner end of the bottom piece portion 11a and radially outwardly extending along a ply main portion 6a of a carcass 6. At an outer end position P1 of a ply turnup portion 6b, the upper apex portion 12 has a thickness T1s of 0.50 to 0.75 times a core width Bw of the bead core 5. At an outer end position P2 of an outer wound-up portion 9o of a bead reinforcing cord layer 9, the upper apex portion 12 has a thickness T2s of 0.57 to 0.90 times the core width Bw. The core width Bw is 0.68 to 0.80 times a bead bottom width BL.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: May 29, 2012
    Inventor: Kiyoto Maruoka
  • Publication number: 20120085475
    Abstract: A pneumatic tire includes an axis of rotation, a carcass, a tread disposed radially outward of the carcass, a belt structure disposed radially between the carcass and the tread, and a reinforcing structure providing a buffer for absorbing shear strain. The reinforcing structure includes a layer of a knitted fabric. The layer includes first yarns and second yarns.
    Type: Application
    Filed: October 7, 2010
    Publication date: April 12, 2012
    Inventors: Annette Lechtenboehmer, David Gilbert Wieczorek, Raphael Beck
  • Patent number: 8151849
    Abstract: A pneumatic tire for mounting on an aircraft wheel has a radial carcass and flipper reinforcement. The tire has a pair of bead cores, at least two or more axially inner plies greater than or equal to, extending between the bead cores, a crown reinforcement radially outward of the plies having a maximum belt width BW, and at least one flipper reinforcement wrapped around each bead core. Each bead core has a radially extending cross sectional length B. Each flipper reinforcement extends along an inner surface of the bead core to the axially inner end located in an area that is between 0.01 BW to 0.25 BW as measured from the belt edge toward a centerline of the tire preferably in the range of 0.05 BW to 0.125 BW and wherein one flipper reinforcement has an axially outer end lower than the top of the bead core.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: April 10, 2012
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Kiyoshi Ueyoko
  • Patent number: 8127815
    Abstract: The present invention is directed to a pneumatic tire comprising at least one component selected from the group consisting of apexes, flippers and chippers, the at least one component comprising a rubber composition, the rubber composition comprising a diene based elastomer and from 1 to 30 parts by weight, per 100 parts by weight of elastomer (phr), of a polybenzobisoxazole (PBO) short fiber having a length ranging from 0.5 to 20 mm having a thickness ranging from 10 to 30 microns, and from 1 to 50 phr of an epoxidized polyisoprene having a number-average molecular weight of 5000 to 100000.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: March 6, 2012
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Ralf Mruk, Serge Julien Auguste Imhoff, Julia Martine Francoise Claudine Tahon, Annette Lechtenboehmer, Frank Schmitz
  • Patent number: 8061401
    Abstract: Heavy goods vehicle tire comprising a radial carcass reinforcement (10) anchored in each of the beads to an anchoring structure (20), this carcass reinforcement (10) being partially wound around an anchoring structure (20), passing from the inside of the tire towards the outside, a first connecting reinforcement (30) partially in contact with the carcass reinforcement (10) and wound around the anchoring structure (20), a second connecting reinforcement (40) formed of a plurality of reinforcing members directed in a mean direction that makes an angle of 50 degrees at most with the circumferential direction and envelopes the first connecting reinforcement (30) to form an internal portion (41) and an external portion (42), the internal portion (41) being in contact over a length V1 with the carcass reinforcement between a first end point D1 of the said first portion and the end point P1 of the first connecting reinforcement (30), the external portion (42) being in contact with the carcass reinforcement from a po
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: November 22, 2011
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Bopha Grisin, Phillppe Johnson, Olivier Lenepveu
  • Patent number: 8025084
    Abstract: A pneumatic radial tire has a nominal section width of 255 mm or more, and an outer diameter of 720 mm or more. At least one carcass layer is constructed between paired right and left bead cores with the two end portions of the carcass layer being folded back from the inside to the outside of the tire around the respective bead cores in a way that their corresponding bead fillers are enclosed in the two folded end portions thereof. The length of each bead filler in the radial direction of the tire is 5% to 20% of the section height of the tire. The carcass layer is formed of organic fiber cords each made of at least one type of organic fiber which has an expansion ratio of 1% to 5% when a load of 2.0 cN/dtex is applied to the organic fiber. A sheet-shaped rubber reinforcement layer with a thickness of 0.5 mm to 2 mm, whose rubber has a larger rigidity than that of the sidewall section, is interposed between the carcass layer and a sidewall section on each side of the tire.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: September 27, 2011
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Hiroyuki Kojima
  • Patent number: 8002007
    Abstract: There is provide a pneumatic radial tire for heavy loads capable of more effectively preventing a breakdown due to separation of a rubber chafer in an area corresponding to a bead heal portion than before. A pneumatic radial tire 10 for heavy loads has a pair of bead portions 12, a bead core 14 which is embedded in each of the bead portions 12, a radial carcass 16 extending from one bead portion 12 to the other bead portion 12 and turned around the bead core 14 from an inner side to an outer side of the bead portion 12 in a width direction of the tire to be anchored, a rubber chafer 22 disposed over the radial carcass 16 in the opposite side of the bead core 14.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: August 23, 2011
    Assignee: Bridgestone Corporation
    Inventor: Akira Sasaki
  • Patent number: 7992611
    Abstract: A pneumatic tire includes an axis of rotation, a carcass, a tread, and a belt structure. The carcass has at least one reinforced ply and a reinforcing structure providing a buffer for absorbing shear strain. The tread is disposed radially outward of the carcass. The belt structure is disposed radially between the carcass and the tread. The reinforcing structure comprises at least one layer of an open construction LENO weave fabric having warp yarns extending in the radial direction and weft yarns extending in the circumferential direction.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: August 9, 2011
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Serge Julien Auguste Imhoff, Yves Donckels
  • Patent number: 7971615
    Abstract: The tire includes a first and second axially-spaced bead core, a carcass having at least one belt extending under a tread, and a first ply layer having first and second ends, a first end is located axially outside and adjacent a first bead core, and a second end that is located axially outside and adjacent a second bead core. The carcass further comprises first and second shoulder ply layers each shoulder ply layer having first and second ends, a first end is located under the tread belt, the shoulder ply extending down the side wall region with the second end folding from a position axially outside a respective bead core to a position axially inside and around the bead core. The carcass further comprises an additional reinforcement layer which wraps around the bead and is preferably positioned between the shoulder ply and the first ply layer, although not required.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: July 5, 2011
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Robert Anthony Neubauer, Keith Carl Trares, Robert Bernard Nelson, Joseph Kevin Hubbell, Robert Allen Losey, Ping Zhang
  • Patent number: 7954529
    Abstract: A heavy duty tire comprises: a carcass ply of cords extending between bead portions; and a bead reinforcing layer disposed in each of the bead portion. The carcass ply has edges winded around the bead cores so that the winded portion has a base part extending along the bead core from the axially inside to the axially outside thereof, and a radially outer part extending axially inwards on the radially outside of the bead core. The bead reinforcing layer comprises: a curved portion extending along the base part; an axially outer portion extending radially outwardly, separation from the base part; and an axially inner portion extending radially outwardly along a main portion of the carcass ply. The bead reinforcing layer is composed of a ply of cords laid side by side, and the spacing Da of the cords in an axially outer part beneath the bead core, of the curved portion is not less than 1.5 times and not more than 3.0 times the spacing Db of the cords in the axially outer portion.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: June 7, 2011
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Hideaki Yoshikawa, Kiyoto Maruoka
  • Patent number: 7926533
    Abstract: A pneumatic tire may use a combination of high modulus and low modulus plies to provide increased fatigue compression durability without significantly increasing the weight of the tire.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: April 19, 2011
    Assignee: The Goodyear Tire & Rubber Company, Inc.
    Inventor: Roel Domingo Villanueva
  • Patent number: 7909077
    Abstract: A heavy duty tire comprises a bead filler disposed in each bead portion (4). The bead filler (8) comprises: a main layer (13) having a complex elastic modulus E*2 of from 2.0 to 6.0 Mpa; and a fastening layer (12) having a complex elastic modulus E*1 of from 20 to 70 Mpa. The fastening layer comprises a base portion (12B) and an axially inner portion (12A) to have a L-shaped cross section. The height Ha of the axially inner portion (12A) is 35 to 100 mm and not more than the height Hb of the main layer (13), and the radial height Hb is 40 to 100 mm, each from the bead base line.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: March 22, 2011
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Kiyoto Maruoka
  • Publication number: 20100300598
    Abstract: Heavy goods vehicle tire, in at least one of the beads of which the following three conditions (A) to (C) are met: (A) the angle formed between the straight line L1 connecting: (i) the centre of the circle of the circular arc forming the rim hook and (ii) the radially outermost point of the wrapped-around portion of the carcass ply, and the axial direction, is greater than or equal to 30°, and less than or equal to 60°; (B) the minimum distance D between the outbound portion of the carcass ply, and the free end of the wrapped-around portion of the carcass ply is less than or equal to 50% of the max distance Dmax between the outbound portion and the wrapped-around portion of the carcass ply; and (C) the tire further comprises, axially adjacent to the carcass ply, an additional reinforcing ply, in which the angle formed between the straight line L2 connecting (i) the said centre of the circle of the circular arc and (ii) the radially outermost point of the additional reinforcing ply, and the axial direction is
    Type: Application
    Filed: September 16, 2008
    Publication date: December 2, 2010
    Applicants: Societe De Technologie Michelin, Michelin Recherche et Technique S.A.
    Inventors: Jean Coue, François Barbarin
  • Patent number: 7810535
    Abstract: Provided is an ultra-low profile pneumatic radial tire for SUV or the like having an aspect ration of 55% or less and a tire outer diameter of 720 mm or more, which has improved load durability while managing a weight reduction without deteriorating driveability. A carcass layer (4) thereof is configured as a single ply, and both ends thereof are folded back around left and right bead cores (7) so as to wrap bead fillers (8). A folded-back portion (4t) is wrapped on the inner side of an end of a belt layer (5) in a range not greater than 10% of the maximum width of the belt layer (5). The hardness of the bead fillers is 65 to 80 in terms of JIS durometer A hardness, and a height hb of the bead fillers (8) from a bead base is brought to 10 to 20% of the height H of a tire cross-section.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: October 12, 2010
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Hiroyuki Kojima
  • Publication number: 20100116404
    Abstract: The present invention is directed to a pneumatic tire comprising at least one component, the at least one component comprising a rubber composition, the rubber composition comprising: from 60 to 90 parts by weight of a diene based elastomer selected from the group consisting of natural rubber, synthetic polyisoprene, polybutadiene, and styrene-butadiene rubber, from 10 to 40 parts by weight of a functionalized elastomer derived from styrene, 1,3-butadiene, and a monomer of formula II where n is an integer of from 4 to 10; and from 1 to 100 parts by weight, per 100 parts by weight of elastomer (phr), of a polyketone short fiber having a length ranging from 0.5 to 20 mm and a weight ranging from 0.5 to 5 decitex.
    Type: Application
    Filed: November 11, 2008
    Publication date: May 13, 2010
    Inventors: Annette Lechtenboehmer, Frank Schmitz, Ralf Mruk
  • Publication number: 20100116403
    Abstract: The present invention is directed to a pneumatic tire comprising at least one component, the at least one component comprising a rubber composition, the rubber composition comprising a diene based elastomer and from 1 to 30 parts by weight, per 100 parts by weight of elastomer (phr), of a polyketone short fiber having a length ranging from 0.5 to 20 mm having a weight ranging from 0.5 to 5 decitex, and from 1 to 30 phr of an epoxidized polyisoprene having a number-average molecular weight of 5000 to 100000.
    Type: Application
    Filed: November 7, 2008
    Publication date: May 13, 2010
    Inventors: Ralf Mruk, Frank Schmitz, Serge Julien Auguste Imhoff, Annette Lechtenboehmer, Julia Martine Francoise Claudine Tahon
  • Publication number: 20100065184
    Abstract: A pneumatic tire includes a tread, two annular bead portions, a carcass ply having two turnup end portions, a first reinforcing structure disposed at one of the bead portions, and an annular first cap structure encompassing a first end portion of the first reinforcing structure. Each turnup end portion is wrapped around one of the annular bead portions. The first reinforcing structure is disposed at one of the bead portions. The first cap structure encompasses the first end portion of the first reinforcing structure. The first cap structure has a U-shaped cross-section for surrounding the first end portion. The first cap structure is constructed of reinforced fabric with fibers oriented in the range from ?45° to +45° with respect to a radial direction of the pneumatic tire.
    Type: Application
    Filed: September 18, 2008
    Publication date: March 18, 2010
    Inventors: Osama Hamzeh, Mingliang Du, Ding Xu, Mahesh Kavaturu, Nizar Toumni, Olivier de Barsy
  • Publication number: 20100006201
    Abstract: Heavy goods vehicle tire comprising a radial carcass reinforcement (10) anchored in each of the beads to an anchoring structure (20), this carcass reinforcement (10) being partially wound around an anchoring structure (20), passing from the inside of the tire towards the outside, a first connecting reinforcement (30) partially in contact with the carcass reinforcement (10) and wound around the anchoring structure (20), a second connecting reinforcement (40) formed of a plurality of reinforcing members directed in a mean direction that makes an angle of 50 degrees at most with the circumferential direction and envelopes the first connecting reinforcement (30) to form an internal portion (41) and an external portion (42), the internal portion (41) being in contact over a length V1 with the carcass reinforcement between a first end point D1 of the said first portion and the end point P1 of the first connecting reinforcement (30), the external portion (42) being in contact with the carcass reinforcement from a po
    Type: Application
    Filed: January 30, 2008
    Publication date: January 14, 2010
    Applicant: Michelin Recherche et Technique S.A.
    Inventors: Bopha Grisin, Phillippe Johnson, Olivier Lenepveu
  • Patent number: 7513283
    Abstract: The present invention relates to a heavy duty tire being capable of preventing positional shift of carcass cords in the blowout direction while restricting rupture of the carcass cords for improving bead durability. A ply turnup portions 6b of a carcass 6 includes a sub-portion 11 that extends proximate of an upper surface SU of a bead core 5 in a tire radial direction upon inclining towards a ply main body portion 6a and further includes an auxiliary cord layer 20 for pressing the sub-portion outside thereof in the radial direction. A bead portion 4 is further provided with a U-shaped bead reinforcing layer 15. A periphery of the bead core 5 is coated by a reinforcing rubber layer 15 made of high elastic rubber having a complex elastic modulus E*a of 20 to 70 MPa, and a rubber thickness T0 of a clearance portion G at which bead wires 5w and carcass cords 20 are adjacent is defined to be not less than 0.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: April 7, 2009
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Kiyoto Maruoka
  • Publication number: 20070151649
    Abstract: A heavy duty tire with decreased rolling resistance without impairing durability, comprising carcass 6, belt layer 7 disposed radially outward of the carcass in tread portion 2, and sidewall rubber 3g disposed axially outward of the carcass in sidewall portion 3 and extending in the radial direction of the tire, wherein the sidewall rubber includes an axially inner rubber portion 10 disposed axially outward of the carcass and an axially outer rubber portion 11 disposed axially outward of the inner rubber portion to form the tire outer surface, the inner rubber portion 10 has a lower loss tangent “tan ?” than the outer rubber portion 11 by a difference of 0.010 to 0.035, and the inner rubber portion 10 has a lower complex elastic modulus than the outer rubber portion 11 by a difference of 0.5 to 1.4 MPa.
    Type: Application
    Filed: September 8, 2006
    Publication date: July 5, 2007
    Inventor: Kazuki Numata