Apex Or Filler Strip Patents (Class 152/541)
  • Patent number: 11479063
    Abstract: A pneumatic tire includes: a carcass layer wrapping a bead core and a bead filler and being turned back; a steel chafer formed by steel cords and disposed between the carcass layer and a rim fitting surface; and sub-chafers between the steel chafer and the rim fitting surface and made of organic fiber. The steel chafer includes an outer end portion outward of the bead filler in a tire lateral direction. The outer end portion has a height from 0.5 times to 0.7 times a height of a rim flange. The sub-chafers each include an outer end portion outward of the bead filler in the tire lateral direction. The outer end portion has a height from 0.7 times to 0.9 times a height of a rim flange. The carcass layer has a turned up height from 2.5 times to 4.5 times a height of a rim flange.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: October 25, 2022
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Risa Tauchi
  • Patent number: 11260703
    Abstract: A pneumatic tire with a reinforcement material includes: a tread that comes in contact with a road surface; side walls that extend and form shoulders and inner liners at both sides of the tread; a carcass that is integrally attached to the tread and the inner sides of the side walls and forms a turn-up head at both ends of the side walls; a belt layer that is layered on the tread of the carcass; and a bead that includes a bead core inserted in a wheel inside the turn-up head, a bead filler inserted in a side of the tread of the bead core, and a reinforcement material inserted in an interface of the turn-up head.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: March 1, 2022
    Assignee: HANKOOK TIRE & TECHNOLOGY CO., LTD
    Inventors: Sol Kim, Kyung Min Yun, Chang Hyo Hong
  • Patent number: 11148477
    Abstract: A heavy-duty pneumatic tire includes a section width being equal to or less than 335 mm, an aspect ratio being equal to or less than 55%, and a toroidal carcass extending between axially spaced bead portions through a tread portion and sidewall portions, wherein the carcass includes a carcass ply which includes a main portion and a turn-up portion, a belt layer disposed radially outward of the carcass in the tread portion, a sidewall rubber defining an outer sidewall profile of each sidewall portion, and a chafer rubber defining an outer bead profile of each bead portion, wherein in each bead portion, on a straight line that is perpendicular to the main portion of the carcass ply and passes a radially inner end of the sidewall rubber, the chafer rubber has a thickness of from 40% to 60% of a thickness of the bead portion.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: October 19, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yoshiki Kanaya
  • Patent number: 11084333
    Abstract: A tire includes: a bead core; a bead filler extending to an outer side in the tire-radial direction of the bead core; a carcass ply which is folded back around the bead core; a pad member disposed on an outer side in the tire-width direction of the bead filler; and a first rubber sheet disposed in a state covering a folding end of the carcass ply which is folded back, between the bead filler and the pad member, in which a second rubber sheet covering an electronic component is disposed between the bead filler and the pad member on an outer side in the tire-radial direction of the first rubber sheet.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: August 10, 2021
    Assignee: Toyo Tire Corporation
    Inventor: Harunobu Suita
  • Patent number: 10894447
    Abstract: In a tire 2 of the present invention, sidewalls 6 each include an outer layer 6a, and an inner layer 6b disposed inward of the outer layer 6a in the axial direction. The inner side end, in the radial direction, of the inner layer 6a extends to a region between a bead 10 and a chafer 8. When Po represents a contact point, on an outer surface of the tire 2, at which the outer layer 6a and the chafer 8 contact with each other, an inner side end, in the radial direction, of the outer layer 6a is equal to the contact point Po. In the radial direction, an outer side end 44 of the chafer 8 is disposed outward of the contact point Po. In the radial direction, an inner side end 46 of the inner layer 6b is disposed inward of the contact point Po.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: January 19, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Daisuke Todoroki
  • Patent number: 10759129
    Abstract: A plant for building tyres of at least two different models for vehicle wheels, includes at least a tyre building line, which in turn, includes: a plurality of work stations arranged according to a sequential series, each work station being adapted for building at least one structural component of each tyre and assembling at least one elementary component; at least one handling device for the tyres being processed on the respective forming supports associated to each work station; and at least one transfer device adapted for transferring the tyre being processed on its forming support from any first work station of the sequential series to any other second work station not adjacent thereto of the sequential series, so that the tyre being processed on its forming support only passes in the first and second work stations.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: September 1, 2020
    Assignee: PIRELLI TYRE S.p.A.
    Inventors: Fiorenzo Mariani, Pierangelo Misani
  • Patent number: 10513154
    Abstract: A tire includes a pair of beads; a carcass that is extended on and between the beads on both sides; and a pair of strips that extend almost outward from the beads along the carcass in the radial direction. The beads include cores, first apexes, and second apexes. The carcass includes a carcass ply, and the carcass ply includes a main portion and turned-up portions. The turned-up portions are disposed between the first apexes and the second apexes. The turned-up portions contact with the main portion in portions radially outward of outer ends of the first apexes. A position of an outer end of each strip is equal, in the radial direction, to a position Pb at which the maximum width is obtained, or the outer end of each strip is disposed radially inward of the position Pb at which the maximum width is obtained.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: December 24, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Goro Munezawa, Sho Takada, Masanori Mitsuoka, Takanori Kogiso
  • Patent number: 10245900
    Abstract: A tire (1) in which a carcass fold-back portion (40) is wound around a bead core (10) includes a hard bead filler (50) arranged on an outer side of a carcass (20) in the tread width direction (twd), the hard bead filler (50) extends, along a tire radial direction (trd), from an outer side of the bead core (10) at least to a center (BO) of the bead core (10), and a thickness (t) of the hard bead filler (50) along the tread width direction (twd) is not shorter than 0.5 mm on a straight line (L) passing over the center (BO) of the bead core (10) in the tread width direction (twd).
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: April 2, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Yoshikazu Kibayashi
  • Patent number: 10202008
    Abstract: This tire is provided with reinforcing cord layers that reinforce a bead part. The reinforcing cord layers are such that at the bead part at the inner side of vehicle mounting, the number of layers of the reinforcing cord layers with respect to a bead filler is greater at the inner side in the direction of tire width compared to the outer side in the direction of tire width with respect to the bead filler, and at the bead part at the outer side of vehicle mounting, the number of layers of the reinforcing cord layers with respect to the bead filler is greater at the outer side in the direction of tire width compared to the inner side in the direction of tire width with respect to the bead filler.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: February 12, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Keita Yumii
  • Patent number: 10071603
    Abstract: A tire has an axis of rotation. The tire includes two inextensible annular bead structures for attachment to a vehicle rim, a carcass-like structure having at least one reinforced ply, the carcass-like structure being wound about the two bead structures, a tread disposed radially outward of the carcass-like structure, and a shear band structure disposed radially between the carcass-like structure and the tread. The two bead structures include at least one layer of a three dimensional fabric including a tear drop frame structure and open cells defined by the tear drop frame structure.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: September 11, 2018
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Francesco Sportelli, David Ray Hubbell
  • Patent number: 10052919
    Abstract: A tire includes at least one body defining a plurality of body ply layers, and a toroidal element located between the body ply layers. The toroidal element includes inner and outer regions formed by the body ply layers, and a central region formed by an inner rubber component located between the body ply layers. At least a portion of the central region is more elastic than the inner and outer regions. The toroidal element includes a first sidewall portion extending along at least a portion of the first sidewall region of the tire, and a second sidewall portion extending along at least a portion of the second sidewall region of the tire. The toroidal element is pre-stressed such that the first sidewall portion of the toroidal element exerts a first axially outward force, and such that the second sidewall portion of the toroidal element exerts a second axially outward force.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: August 21, 2018
    Assignee: BRIDGESTONE AMERICAS TIRE OPERATIONS, LLC
    Inventors: Robert Asper, Sharon Reinhardt
  • Patent number: 9981510
    Abstract: A pneumatic tire has two carcass layers including carcass cords are laid between a pair of bead portions, bead cores and bead fillers are disposed in the bead portions, and at least two belt layers are disposed on the outer circumferential side of the carcass layers, the tire being characterized in that both ends of the inner carcass layer are folded back from the tire inner side to the tire outer side around the bead cores, and the ends of the folded back portions of the inner carcass layer are disposed between the innermost belt layer and the outer carcass layer, while both ends of the outer carcass layer are disposed so as to pass between a main portion of the inner carcass layer and the bead fillers, and both ends of the outer carcass layer terminate at the bead portions without being folded back around the bead cores.
    Type: Grant
    Filed: November 29, 2013
    Date of Patent: May 29, 2018
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Masatoshi Kuriyama, Masatoshi Shimizu, Shinya Harikae
  • Patent number: 9956827
    Abstract: Tire comprising carcass reinforcement (7) comprising turned-up carcass layers (71, 72) and non-turned-up carcass layers (73, 74), each turned-up carcass layer (71, 72) comprising main part (711, 721) wrapped, in each bead (4), from the inside of the tire towards the outside around bead wire (8) of diameter D, to form turn-up (712, 722) of which end (E1, E2) is positioned radially on the outside of radially outermost point E of bead wire (8) at a radial distance (a1, a2), each non-turned-up carcass layer (73, 74) having an end (E3, E4) which is positioned at radial distance (b3, b4) from the radially outermost point of E of bead wire (8), the radial distance (a1, a2) is at least equal to 0.5 times the section height H of the tire and the radial distance (b3, b4) is at most equal to diameter D of bead wire (8).
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: May 1, 2018
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventor: Claude Orlowski
  • Patent number: 9931895
    Abstract: A pneumatic tire includes a tread, sidewalls, clinches, beads, a carcass, and strips. Each bead includes a core, a first apex and a second apex, the carcass includes a carcass ply which is turned up around the core from the axially inner side toward outer side such that the carcass ply is divided into a main portion and a turn-up portion, each strip has radially inner edge positioned between the main and turn-up portions, the second apex is positioned between the turn-up portion and each clinch, each strip has outer edge positioned to correspond to or on inner side of a point of maximum width of the tire in radial direction, the second apex has outer edge positioned on radially inner side of the outer edge of each strip, and the second apex includes crosslinked rubber and has complex elastic modulus in range of from 60 MPa to 70 MPa.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: April 3, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES LTD.
    Inventor: Goro Munezawa
  • Patent number: 9926437
    Abstract: Provided are a rubber composition for tires, capable of improving discoloration resistance and tire appearance while maintaining good handling stability, crack resistance, and ozone resistance or improving these properties, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for tires including a rubber component having a combined amount of polybutadiene rubber, natural rubber, and polyisoprene rubber of 90% by mass or more based on 100% by mass of a rubber component; sulfur; a pluronic nonionic surfactant in an amount of 0.1 to 5.0 parts by mass per 100 parts by mass of the rubber component; and carbon black in an amount of 2 to 70 parts by mass per 100 parts by mass of the rubber component.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: March 27, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Ryuichi Tokimune, Tatsuya Miyazaki, Masanobu Nakamura
  • Patent number: 9919568
    Abstract: A tire includes a tread formed in a crown region of the tire and sidewall regions extending from the crown region to bead areas. The tire further includes a toroidal element extending across a crown region of the tire, and further extending along at least a portion of each sidewall region of the tire. The toroidal element has a central region located between inner and outer regions. The central region is more elastic than the inner and outer regions.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: March 20, 2018
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventor: Robert Asper
  • Patent number: 9902213
    Abstract: Disclosed is a tire (1) which comprises: a bead core (10); a first bead filler (20); a first carcass (30); a second bead filler (40); and a rubber chafer (50) disposed at the outer side of the second bead filler (40) in the tread width direction. The second bead filler (40) covers a first bead filler outer end part (23) in the tread width direction, and a second bead filler inner end part (48) is disposed outside the bead core (10) in the tire radius direction. The rubber chafer (50) covers the second bead filler (40) in the tread width direction, and the loss tangent of the second bead filler (40) is smaller than the loss tangent of the rubber chafer (50).
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: February 27, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Masakazu Amano, Masahiro Yabashi
  • Patent number: 9889712
    Abstract: A pneumatic tire includes a tread, a pair of sidewalls extending from edges of the tread substantially in a radially inward direction, a pair of clinches extending from edges of the sidewalls substantially in the radially inward direction, a pair of beads positioned on axially inner sides of the clinches, and a carcass extending along an inner side of the tread and sidewalls such that the carcass is bridging the pair of beads. Each bead includes a fitting portion extending in a circumferential direction and formed to be fitted to a rim, the fitting portion has a bottom surface positioned on a radially inner side of the fitting portion and a side surface positioned on an axially outer side of the fitting portion, the bottom surface includes a heel on the axially outer side of the fitting portion, and the side surface includes a concave extending in the circumferential direction.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: February 13, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES LTD.
    Inventors: Naoya Nagahara, Junichi Nagata, Kiyotaka Ueyama, Yoshihiro Hada, Hiroshi Okagawa
  • Patent number: 9783008
    Abstract: A pneumatic tire includes a tread, sidewalls extending from edges of the tread, clinches extending from the edges of the sidewall, beads positioned on axially inner side of the clinches, a carcass bridging the beads along inner side of the tread and sidewalls, and load support layers positioned on axially inner side of the carcass such that the layers are positioned between the tread and beads. Each bead includes core and main apex, the core has radially outer side surface facing radially outward, the carcass includes carcass ply turned up around the core from inner side toward outer side in axial direction of the tire such that the main portion and turn-up portion are formed in the ply, the turn-up portion has core laminating portion laminated on the radially outer side surface of the core, and the apex is extending radially outward from radially outer side of the laminating portion.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: October 10, 2017
    Assignee: SUMITOMO RUBBER INDUSTRIES LTD.
    Inventor: Naoki Yukawa
  • Patent number: 9669665
    Abstract: A pneumatic tire has carcass layers mounted between a pair of bead parts, the carcass layers being wound from the inner side of the tire to the outer side thereof about a bead core of each bead part. Protective layers including organic fiber cords are positioned in sidewall parts on the outer side of the carcass layers. The upper end parts of the protective layers are positioned along the carcass layers from outer end locations of the belt layers, between a location 20 mm toward the inner side in the tire width direction and a location 15 mm toward the outer side in the tire width direction. The lower end parts of the protective layers are positioned between main body portions of the carcass layers and the bead filler.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: June 6, 2017
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Masakazu Niwa
  • Patent number: 9618781
    Abstract: A display device includes a display panel including an upper substrate and a lower substrate facing and coupled to a rear surface of the upper substrate, a guide frame supporting the display panel, and a coupling member coupling the guide frame to the display panel. The coupling member includes an adhesive member providing adhesive strength and at least one or more buffer members which are disposed inside the adhesive member and have an elastic force. Accordingly, the display device can absorb an impact applied to the display panel, thus enhancing the stability of the display panel.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: April 11, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Chang Soo Jang, Sung-Eui Shin
  • Patent number: 9533460
    Abstract: An object is to improve the durability of the stiffener having a hard rubber member and a soft rubber member formed on the radially inner side and the radially outer side by laminating rubber strips. A tire includes bead cores, stiffeners provided on the outer circumferences of the bead cores, and a carcass ply. Ends of the carcass ply are disposed on the stiffeners. Each stiffener includes an inner rubber portion on the radially inner side, an outer rubber portion on the radially outer side, and a cover tape. The inner rubber portion is formed by laminating a first rubber strip. The outer rubber portion is formed by laminating a second rubber strip. The second rubber strip is composed of rubber having a lower rigidity than the inner rubber portion. The cover tape covers a part of the stiffener that comes into contact with the end of the carcass ply.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: January 3, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Yuichiro Ogawa
  • Patent number: 9440499
    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: Grant
    Filed: July 23, 2013
    Date of Patent: September 13, 2016
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventors: Bradley J. Harris, Christopher A. Swartzwelder
  • Patent number: 9290064
    Abstract: In a pneumatic tire, a height from a turned-up edge of a carcass layer is not more than 10 mm, a distance from a tire outer surface to the carcass layer is not less than 50% of the total gauge, a height of the bead filler is from 50% to 80% of a tire cross-section height, a cross-sectional area ratio VB/VR of the bead filler to a side reinforcing layer is not less than 0.4 and not more than 0.6, a hardness HsB of the bead filler is not less than 65 and not more than 80, and the hardness HsR of the side reinforcing layer is not less than 75 and not more than 85, a size relationship between the hardness HsB and the hardness HsR is HsB?HsR, a value TB of tan ? is not more than 0.06, and a value TR of tan ? is not more than 0.05.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: March 22, 2016
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Kenji Horiuchi
  • Patent number: 9259970
    Abstract: A belt cushion disposed between an tire-axis-direction end of a belt layer and a carcass comprises an outer layer, an interlayer, and an inner layer which are arranged in this order inwardly in the tire-radial-direction from the tire-axis-direction end of the belt layer. The inner layer and outer layer are made of a rubber composition B having complex modulus E*b and loss tangent tan ?b. The interlayer is made of a rubber composition C having complex modulus E*c being substantially the same as the complex modulus E*b and having loss tangent tan ?c being smaller than the loss tangent tan ?b.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: February 16, 2016
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Hiroki Takahashi
  • Patent number: 9248703
    Abstract: In a tire having two beads, each bead has a bead filler situated at least partially between a main portion and a wrapped-around portion of a carcass reinforcement and an outer strip situated axially outside of the wrapped-around portion of the carcass reinforcement. The bead filler has a thickness E(r). An assembly formed by the bead filler and the outer strip has a thickness ET(r). For all the points of intersection of which the radial distance from the radially innermost point of the annular reinforcing structure is greater than or equal to 10% and less than or equal to 35% of the radial height H of the tire, the ratio E(r)/ET(r) is greater than or equal to 0.3 and less than or equal to 0.5.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: February 2, 2016
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Michelin Recherche et Technique S.A.
    Inventors: François-Xavier Bruneau, Frédéric Bourgeois
  • Patent number: 9193220
    Abstract: Tire comprising two beads (20), two sidewalls (30) joining in a crown, and at least one carcass reinforcement (60) extending from the beads through the sidewalls to the crown, the carcass reinforcement being anchored in the two beads by a turn-up around an annular reinforcing structure in such a way as to form in each bead an incoming portion (61) and a wrapped-around portion (62), wherein each bead comprises a bead filler (110) and an outer band (120), the latter being placed axially outside of both the carcass reinforcement and the bead filler, wherein the assembly formed by the bead filler (110) and the outer band (120) has a thickness E(r), r being the distance to the radially innermost point (71) of the annular reinforcing structure, the thickness E(r) at different positions being such that, in the range of distances r greater than or equal to 15% and smaller than or equal to 50% of the radial height H of the tire, the variation of the thickness is less than or equal to ?0.25 mm/mm over at least 5 mm.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: November 24, 2015
    Assignees: Michelin Recherche et Technique S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventor: Bertrand Daval
  • Patent number: 9193219
    Abstract: A heavy-duty pneumatic tire includes a carcass including a carcass ply extending from a tread portion through a sidewall portion and turned up around a bead core of a bead portion. The bead core includes a radially inner surface extending along a bottom surface of the bead portion in the radial direction of the tire. Under both conditions that include an unloaded standard condition where the tire is mounted on a standard rim and inflated to regular internal pressure and a loaded standard condition where the tire in the unloaded standard condition above is loaded with a regular load and grounded at a camber angle of 0 degrees, the tire has an angle between the radially inner surface of the bead core and a rim sheet surface of the standard rim being in a range of 0 plus/minus 3 degrees.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: November 24, 2015
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Daisuke Todoroki, Atsushi Maehara
  • Patent number: 9139050
    Abstract: A pneumatic tire construction is described suitable for severe loading conditions. The tire includes a bead portion further having an apex which extends radially outward of the bead core, and a first turn-up pad located adjacent said chafer, and a second turn-up pad located adjacent said first turn-up pad, wherein the first turn-up pad has a G? less than the G? of the second turn-up pad. Alternatively, the first turn-up pad may be located adjacent to the rim flange and the second turn-up pad may be located axially inward of the first pad. The second turn-up pad is preferably thicker and longer than the first turn-up pad.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: September 22, 2015
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Gayathri Venkataramani, Dale Eugene Wells
  • Publication number: 20150144243
    Abstract: A pneumatic tire, which may include a bead portion reinforcing cord layer disposed along a turn-up portion of a carcass, includes at least one component member selected from the group consisting of a carcass cord ply and a belt cord layer and/or the bead portion reinforcing cord layer including an end rubber wrapping the end part thereof, the end rubber having a loss tangent larger than 0.20 and 0.35 or smaller at 2% strain at 25° C. and a difference ?E? between a storage modulus at 0.1% strain and a storage modulus at 2% strain at 25° C. being 10 MPa or more and 30 MPa or less, and a coating rubber covering a cord in the component member and/or the bead portion reinforcing cord layer including the end rubber has a loss tangent at 2% strain at 25° C. of 0.20 or less.
    Type: Application
    Filed: November 20, 2014
    Publication date: May 28, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Yasuyo SAITO
  • Publication number: 20150144242
    Abstract: A tire which is intended to bear heavy loads and the endurance of which is improved. The tire contains, in the bead region, at least one internal annular insert, the said insert having a rubber composition containing a polyisoprene elastomer, between 45 phr and 60 phr of a reinforcing filler containing from 43 to 55 phr of a reinforcing inorganic filler with a BET specific surface of between 155 and 185 m2/g, and a coupling agent for bonding the reinforcing inorganic filler to the elastomer.
    Type: Application
    Filed: June 13, 2013
    Publication date: May 28, 2015
    Applicants: MICHELIN RECHERCHE ET TECHNIQUE, S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Patricia Lagarde, JR., David Lavialle
  • Patent number: 9027619
    Abstract: An intermediate article of manufacture formed as a first stage bead area subassembly for a split ply pneumatic tire carcass is disclosed. The bead area subassembly has an annular bead core; a bead apex; a ply strip; and preferably a sidewall affixed to the ply strip. The subassembly is formed into a disk-shaped bead area monocomponent. The ply strip is wrapped about the bead core and the apex to form a ply turnup and both the ply strip and the ply turnup extend radially outwardly from the bead core. The bead area subassembly when formed into the disk-shaped bead area monocomponent is placed on an annular holder device. The combination of the bead area monocomponent on the holder device can be stacked for storage and latter assembly into a split ply carcass. Preferably, the ply turnup can be oriented extending inside or axially inward of the bead core on final assembly to form a split ply tire having axially inside turnups.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: May 12, 2015
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Douglas Raymond Weaver, Steven Leonard Kitz
  • Patent number: 9023928
    Abstract: The present invention provides a rubber composition that improves in terms of the fuel economy of a rubber composition containing an isoprene-based rubber and also offers favorable durability and favorable processability or adhesion to steel cords, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for a bead apex, sidewall packing, base tread, or breaker cushion, including: a specific rubber component; a specific amount of a specific carbon black; a specific amount of sulfur; and a specific amount of a compound represented by formula (I) below. The present invention also relates to a rubber composition for a steel cord topping, strip adjacent to steel cords, or tie gum, including: a specific rubber component; a specific amount of a specific carbon black; a specific amount of an organic acid cobalt salt; and a specific amount of a compound represented by the formula (I).
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: May 5, 2015
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Tatsuya Miyazaki, Masanobu Nakamura
  • Publication number: 20150107746
    Abstract: A vehicle tire having an apex component that is made of a plurality of elastomeric strips containing reinforcement fibers that are aligned substantially parallel to each other in a controlled angle of orientation within the strip wherein the orientation is selected such that it increases the stiffness of the apex component.
    Type: Application
    Filed: October 17, 2014
    Publication date: April 23, 2015
    Inventor: MARK ALLAN LAMONTIA
  • Patent number: 9004121
    Abstract: Tire including a continuous pressure membrane. The tire includes a carcass, a rubber layer surrounding the carcass, and a belt. The carcass includes at least one continuous pressure membrane defining a generally U-shaped cross section. The pressure membrane includes a crown portion, a first sidewall portion, and a second sidewall portion connected with the first sidewall portion by the crown portion. The belt may be composed of at least one additional continuous pressure membrane adjacent the crown portion.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: April 14, 2015
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Anthony John Scarpitti, Gary Robert Burg
  • Patent number: 8991459
    Abstract: A tire includes a pair of bead portions, with each bead portion having a bead core and a bead filler portion. A belt is disposed below a circumferential tread, in the tread portion of the tire. A carcass ply has a main portion extending between the pair of beads and a pair of turn-up portions that wrap around the beads and terminate below the belt, in the tread portion of the tire. The tire further includes a pair of nylon reinforcements, wherein each nylon reinforcement is disposed axially between a respective bead filler portion and a main portion of the carcass ply. Additionally, each nylon reinforcement has a top end disposed above a top end of the respective bead filler portion. Each nylon reinforcement further has a bottom end disposed below the top end of the respective bead filler portion and above a respective bead core.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: March 31, 2015
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventors: Matthew F. Krietemeyer, Mitchel S. Kritzell, Ryota Kawai
  • 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
  • Publication number: 20150059955
    Abstract: A tire includes: a tire frame member formed in a ring shape from a frame resin material, and including a pair of bead sections, a pair of side sections, and a crown section; a ring shaped bead core that is embedded in and joined to each of the bead sections, and that is formed by a single strand, or plurality of strands, of bead cord extending in the tire circumferential direction, and covered with, and joined to, a covering resin material; and an extension portion that extends from each of the bead cores in a direction that intersects with the tire circumferential direction when viewed from a tire side face, and that is joined to the tire frame member.
    Type: Application
    Filed: December 11, 2012
    Publication date: March 5, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yoshihide Kouno, Seiji Kon, Keiichi Hasegawa
  • 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
  • Patent number: 8955569
    Abstract: An airplane tire has a carcass reinforcement that comprises at least two inner layers wrapped around the bead core from the inside to the outside of the tire to form respectively a turn-up, and at least one outer layer wrapped around the bead core from the outside to the inside of the tire, and axially outward, within the sidewall, of any inner layer. One of the at least two inner layers that is axially nearest the bead core is decoupled for at least a part of its length, in an area adjacent to and radially outward of the bead core, from the turn-ups and carcass reinforcement layers which are axially outward of it, by at least one polymeric bead filler compound.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: February 17, 2015
    Assignees: Michelin Recherche et Technique S.A., Compagnie Generale des Etablissements Michelin
    Inventors: François Chambriard, Jean Luc Dendievel
  • Patent number: 8950456
    Abstract: An assembly including a tire having beads, said bead axially including outside the turn-up a layer of a material defining a bead outer profile, such that the distance A, between the carcass frame and the bead outer profile, is as defined in formula (Z), B being the distance between the end of the turn-up, said bead including first and second profiles between the carcass frame and the turn-up, the first profile extends from the bead wire and is made of a material having an extension secant modulus at a 10% elongation higher than 20 MPa, a second profile arranged in the bead such as to be in contact with a surface of the first profile and the turn-up, made of a material having an extension secant modulus at a 10% elongation of at least 7 MPa and an extension secant modulus at a 100*% extension of at least 4.5 MPa.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: February 10, 2015
    Assignees: Compagnie Generale des Etablissements, Michelin Recherche et Techique S.A.
    Inventors: Christophe Laurent, David Dean, David Lavialle
  • Patent number: 8939185
    Abstract: Provided is a pneumatic radial tire having a rubber chafer arranged on the carcass ply in a contacting area of a bead portion with a rim; a bead filler arranged radially outside on the bead core; and a side rubber extending along an outer surface of the carcass in each a side wall portion. When inflated with a predetermined pneumatic pressure, an outer end of the folded portion of the carcass and an outer end of the bead filler are placed inward from an outer end r of a rim flange of the rim in the radial direction; an outer end of the rubber chafer is placed outward from the outer end r of the rim flange in the radial direction; and a part of a side rubber located outward from the outer end of the rim flange in the radial direction is disposed between the rubber chafer.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: January 27, 2015
    Assignee: Bridgestone Corporation
    Inventor: Toshiharu Ito
  • 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
  • Publication number: 20150020942
    Abstract: This invention pertains to a tire comprising at least one carcass ply and at least one breaker ply, the carcass and breaker plies each comprising continuous filaments having a tenacity of at least 15 grams force per dtex and a modulus of at least 400 grams force per dtex wherein the carcass ply turn-ups terminate under the at least one breaker ply. The invention further pertains to a tire comprising a plurality of apex components and carcass ply turn-ups that terminate within the apex region of the tire. The invention also discloses a tire wherein the carcass ply turn-ups terminate in the upper sidewall region of the tire and ply spacers are located between ply-turn-ups.
    Type: Application
    Filed: July 22, 2013
    Publication date: January 22, 2015
    Applicant: E I Du Pont De Nemours and Company
    Inventors: MARK ALLAN LAMONTIA, William Herbert Coulter, Monty C. McNeil, Harish Viswanathan
  • Publication number: 20150020945
    Abstract: Assembly comprising a tire and a mounting rim, the tire comprising two beads each comprising at least one annular reinforcing structure and a carcass reinforcement anchored in the two beads by a turn-up, each bead comprising a filler of a rubber composition extending radially a radial distance DBE from the radially innermost point of the annular reinforcing structure, DBE being less than or equal to 10% of the radial height H of the tire, at least one sidewall further comprising a stiffening reinforcement of metallic reinforcing elements oriented at an angle less than or equal to 10 degrees to the circumferential direction, and positioned such that the distance DAE between the radially innermost point of the annular reinforcing structure and the radially outer end of the stiffening reinforcement is greater than or equal to 20% and less than or equal to 40% of H and that the distance DAI between the radially inner point of the annular reinforcing structure and the radially inner end of the stiffening reinforce
    Type: Application
    Filed: February 21, 2013
    Publication date: January 22, 2015
    Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE, S.A.
    Inventor: Frederic Bourgeois
  • Publication number: 20140374009
    Abstract: A method forms an adhesion joint between a cord and a rubber matrix. The method includes the steps of: providing a cord having an initial relatively smooth surface; texturing the smooth surface such that the resulting surface is rougher than the initial surface of the cord; depositing a uniform polymer coating on to the textured surface of the cord by plasma polymerization of an organic precursor and an air plasma; and inserting the cord into a rubber matrix such that the resulting surface provides enhanced adhesion to the rubber matrix compared to the adhesion of the initial surface to the rubber matrix or adhesion of the textured surface to rubber matrix.
    Type: Application
    Filed: June 20, 2013
    Publication date: December 25, 2014
    Inventors: Samy Laroussi Mzabi, Frederic Gerard Auguste Siffer, Gilles Joseph Henri Bertemes, Claude Ernest Felix Boes, James Gregory Gillick
  • Publication number: 20140360647
    Abstract: Tire having two beads each comprising an annular reinforcing structure and a carcass reinforcement which is anchored in the two beads by being wrapped around the annular reinforcing structure so as to form, in each bead, a main portion and a wrapped-around portion, wherein each bead comprises an apex situated between the main portion and the wrapped-around portion of the carcass reinforcement, and an outer strip positioned axially on the outside of the carcass reinforcement and of the apex, the apex and the outer strip being made of a rubber compound that has an elastic modulus G? less than or equal to 15 MPa and a viscous modulus G? such that: G? [MPa]?0.2·G? [MPa]?0.2 MPa, the elastic and viscous moduli being measured at 23° C.
    Type: Application
    Filed: November 28, 2012
    Publication date: December 11, 2014
    Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventors: Frédéric Bourgeois, François-Xavier Bruneau
  • Patent number: 8905102
    Abstract: A pneumatic radial tire has a rubber filler includes a lower filler and an upper filler. The lower filler surrounds a bead core and has a round cross sectional shape. The upper filler has a lower rubber hardness than the lower filler. A chafer is wound up around the bead core outside of a carcass ply and includes a metal cord. A wound-up end of the carcass ply is arranged radially outside of an upper end of the lower filler and a wound-up end of the chafer. A rubber pad has a higher rubber hardness than the upper filler and sandwiches the wound-up end of the carcass ply. The rubber pad extends to radially inside of the upper end of the lower filler and contacts with an inside of a wound-up portion of the carcass ply.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: December 9, 2014
    Assignee: Toyo Tire & Rubber Co., Ltd.
    Inventor: Taiichi Nishio
  • Publication number: 20140345777
    Abstract: The invention relates to a method of manufacturing a tire bead core assembly having a bead core and a bead filler. The method comprises the step of placing a bead core in the compression mould. The method also comprises the step of placing a bead filler intermediate in the compression mould. Further, the method comprises the step of pressing the bead filler intermediate onto the bead core using the compression mould. It is noted that the step of pressing the bead filler intermediate onto the bead core may comprise the step of transforming the bead filler intermediate into a bead filler.
    Type: Application
    Filed: September 14, 2012
    Publication date: November 27, 2014
    Inventor: Robert Wilhelmus Franke
  • Patent number: 8875765
    Abstract: The present invention provides a rubber composition for a clinch apex which improves in fuel economy, flex crack growth resistance, and processability in a balanced manner, and also provides a pneumatic tire produced using the rubber composition. The present invention relates to a rubber composition for a clinch apex, including: a modified natural rubber having a phosphorus content of 200 ppm or less; and at least one of carbon black and a white filler.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: November 4, 2014
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Isamu Tsumori, Naoya Ichikawa