Having Tread Sections (e.g., Base-cap, Etc.) Containing Different Specified Physio-chemical Properties (e.g., Hysteresis, Modulus, Hardness, Etc.) Or Compositions Patents (Class 152/209.5)
  • Patent number: 12030343
    Abstract: A tread of a tire can include a cap layer and a base layer. A loss tangent of the cap layer at 30° C. may be not greater than 0.30, and a loss tangent of the base layer at 30° C. may be less than the loss tangent of the cap layer at 30° C. The base layer can be inward of a reference end of the tread in an axial direction A fixing layer can be between the cap layer and a carcass in a radial direction. A first end of the fixing layer can be outward of an end of the base layer in the axial direction, or a position of the first end of the fixing layer can coincide with a position of the end of the base layer in the axial direction. Adhesiveness of the fixing layer can be higher than adhesiveness of the cap layer.
    Type: Grant
    Filed: August 12, 2022
    Date of Patent: July 9, 2024
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Chisato Omori, Takuya Osawa
  • Patent number: 12005741
    Abstract: A tire for a vehicle comprises a tread (2), of which the central part of the tread (2) comprises at least two rubber compounds (221, 222), making up at least 90% of its volume. The first compound (221) is radially on the outside of the second compound (222) and makes up at least 40% and at most 60% of the volume of the central part. The second rubber compound (222) has a Shore hardness DS2 at least equal to 5 plus the Shore hardness DS1 of the first compound (221) and dynamic losses at a temperature of 0° C. and 23° C. that are at least equal to those of the first rubber compound (221). The axially outer parts of the tread are made up of a third compound (223) capable of touching the ground, having a stiffness and a hysteresis that are lower than those of the first compound.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: June 11, 2024
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Benoit Durand-Gasselin, Fabien Hellot, Marie-Laure Francois
  • Patent number: 11970028
    Abstract: It is described a motorcycle tyre (100) intended to be fitted to a wheel of a motorcycle of the “supersport” segment, comprising an equatorial plane and a tread band extending in axial direction with a given axial development, wherein the tread band comprises a first annular portion made of a first elastomeric material, having a first dynamic shear storage modulus measured at 70° C., and at least one second annular portion made of a second elastomeric material, having a second dynamic shear storage modulus measured at 70° C., different form said first dynamic shear storage modulus measured at 70° C.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: April 30, 2024
    Assignee: PIRELLI TYRE S.p.A.
    Inventors: Pierangelo Misani, Luca Bruschelli, Giuliano Bonaccorsi
  • Patent number: 11951772
    Abstract: In a pneumatic tire, a tread portion includes a main groove extending in a circumferential direction, and land portions defined by the main groove. A center region is a region where a center land portion included in the land portions is closest to a tire equatorial plane. Shoulder regions are each a region between a position corresponding to 85% of a width of the belt layer in a lateral direction and an end portion of the belt layer in the lateral direction, and intermediate regions are each a region between the center region and a corresponding one of the shoulder regions. A relationship among a tire average thickness Gc in the center region, a tire average thickness Gsh in the shoulder regions, and a tire average thickness Gm in the intermediate regions is within a range of 1.05?(Gc/Gsh)?1.35 and satisfies Gc?Gm>Gsh.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: April 9, 2024
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Masatoshi Shimizu
  • Patent number: 11912067
    Abstract: In a first aspect, the present invention is directed to a tire comprising a belt portion and a tread portion radially outward of the belt portion, wherein the tread portion comprises a radially outer tread layer for contacting the road when driving and a radially inner tread layer arranged between the radially outer tread layer and the belt portion, wherein the radially outer tread layer comprises a first rubber composition having a first shear storage modulus G?1 and the radially inner tread layer comprises a second rubber composition having a second shear storage modulus G?2, wherein the second shear storage modulus G?2 is between 3 MPa and 9 MPa higher than the first shear storage modulus G?1, and wherein the first shear storage modulus G?1 ranges from 1 MPa to 3 MPa and the second shear storage modulus G?2 ranges from 4 MPa to 12 MPa.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: February 27, 2024
    Assignee: THE GOODYEAR TIRE & RUBBER COMPANY
    Inventors: Michael Hans, Christian Jean-Marie Kaes, Claude Schweitzer, Xavier Jean-Francois Beot
  • Patent number: 11820907
    Abstract: A tire dressing composition is provided that includes petroleum distillates in which a polybutene or isobutene/butene copolymer is dissolved to form a clear solution. In the water-based approach, the polybutene or isobutene/butene copolymer was emulsified by a surfactant. A wetting agent is also present in the composition to render the composition self-levelling. The sprayable tire dressing composition provides a high gloss and good wettability to a tire surface that develops a uniform coating on the treated tire surface.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: November 21, 2023
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Tsao-Chin Clarence Huang, Ali Alwattari
  • Patent number: 11766891
    Abstract: A pneumatic tire includes an innerliner and a tie rubber. A rubber composition for an innerliner constituting the innerliner includes from 25 to 75 parts by mass of a carbon black having a nitrogen adsorption specific surface area from 25 to 95 m2/g, from 1 to 13 parts by mass of a resin, and from 0.1 to 1.8 parts by mass of zinc oxide, per 100 parts by mass of a diene rubber containing from 50 to 100 parts by mass of halogenated butyl rubber, and the dynamic storage modulus at ?45° C. of the rubber composition is not greater than 600 Mpa.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: September 26, 2023
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Katsunori Shimizu, Tsuyoshi Nomaguchi
  • Patent number: 11745544
    Abstract: A pneumatic tyre includes a tread portion provided with circumferential grooves to form circumferential land portions, a belt layer, and a band layer disposed outwardly in the tyre radial direction of the belt layer. The band layer includes a first layer covering an entire width of the belt layer, and second layers disposed outwardly in the tyre radial direction of the first layer and arranged separately in a tyre axially direction from one another. Each second layer is located radially inwardly of a respective one of the circumferential land portions. In each circumferential land portion, the second layer has at least one axial edge that is away at a distance (A) of equal to or more than 3.0 mm in the tyre axial direction from a groove bottom of one of the circumferential grooves nearest to the at least one axial edge.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: September 5, 2023
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Kimikazu Tsukamoto
  • Patent number: 11738601
    Abstract: A tire having a tread with a plurality of blocks 12 provided with at least one sipe 22 extending from the contact face of said block, and having a width that can vary in the direction of its depth, and known as a complex sipe. The tread has a first layer of material 38 and at least one second layer of material 40 radially on the inside of the first layer, the first layer being formed in a first rubber composition and the second layer being formed in a second rubber composition different from the first composition. The complex sipe 22 and the grooves separating the blocks are formed entirely in the first layer of material 38. Laterally on each side of the complex sipe, the second layer of material 40 extends, when viewed in transverse section in the block, beyond the bottom 30 of the complex sipe in the direction of the contact face of the block.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: August 29, 2023
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Damien Blouin, Quentin Bonneton
  • Patent number: 11732116
    Abstract: According to the rubber composition for a tire tread comprising a diene-based rubber component, and, based on 100 parts by mass of the diene-based rubber component, 0.5 to 6.0 parts by mass of a branched alkane of 40 to 70 carbon atoms, 0.05 to 3.5 parts by mass of a linear alkane of 45 or more carbon atoms and 1 to 35 parts by mass of aluminum hydroxide, and a tire comprising tread composed of the rubber composition for a tire tread of the present invention, a rubber composition for a tire tread capable of improving initial wet grip performance can be provided, thereby providing a tire having such improved initial wet grip performance.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: August 22, 2023
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Keiji Takagi, Tatsuya Miyazaki
  • Patent number: 11724544
    Abstract: To provide a pneumatic tire excellent in steering stability and durability at high-speed driving, it is provided a pneumatic tire having a tread portion and a belt layer, wherein the tread portion is arranged on the outer side of the belt layer in the tire radial direction, the reinforcing cord in the belt layer is composed of cords made of monofilaments in which 50/5 cm or more of the monofilaments are arranged in the tire width direction in the tire radial cross section of the belt layer, and the maximum load capacity of the tire WL (kg) and the weight of the tire WT (kg) satisfy (WT/WL)?0.0140.
    Type: Grant
    Filed: December 28, 2021
    Date of Patent: August 15, 2023
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Momoka Misaki, Dong Miao, Hiroki Kawai
  • Patent number: 11667156
    Abstract: In a tire, a tread includes a cap layer forming a part of an outer surface of the tire, a base layer disposed inwardly of the cap layer in a radial direction, and an intermediate layer disposed between the cap layer and the base layer in the radial direction. A loss tangent of the intermediate layer at 30° C. is less than a loss tangent of the cap layer at 30° C. and a loss tangent of the base layer at 30° C. is less than the loss tangent of the intermediate layer at 30° C. The tread includes at least two three-layer body portions formed of the cap layer, the intermediate layer, and the base layer, and at least one two-layer body portion that is formed of the cap layer and the base layer and disposed between a first three-layer body portion and a second three-layer body portion.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: June 6, 2023
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Hiroaki Koga, Hiroshi Kikuchi
  • Patent number: 11628688
    Abstract: Disclosed are a rubber composition for tire tread and a tire manufactured using the same, in which the rubber composition for tire tread comprises a raw material rubber, which comprises a first solution-polymerized styrene-butadiene rubber with a low glass transition temperature (Tg) and a second solution-polymerized styrene-butadiene rubber with a high glass transition temperature (Tg), a reinforcing filler, a silane coupling agent, a functionalized liquid polymer, and a first resin with a high glass transition temperature and a second resin with a low glass transition temperature. The rubber composition for tire tread maximizes the dispersion of silica and the interaction with rubber, and thus, the rubber composition is excellent in all of the properties with respect to wear resistance, low fuel economy, and braking performance.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: April 18, 2023
    Assignee: HANKOOK TIRE & TECHNOLOGY CO., LTD.
    Inventors: Ki Won Lim, Byeong Joo Jeon, Sae Um Ahn
  • Patent number: 11607913
    Abstract: In a state in which a pneumatic tire is mounted on a specified rim, inflated to 92% of a specified internal pressure, and loaded with a load of 75% of the maximum load capacity, an average thickness of an undertread rubber is smaller in a center region than in a shoulder region, a ratio (CAO/UAO) is 0.15 or more and 0.95 or less, a ratio (UAI/UAO) is less than 1, and a ratio (L/W) is 0.29 or more and 0.51 or less, in a tire meridian cross-sectional view, where CAO, UAO and UAI are cross-sectional areas of the cap tread rubber, the undertread rubber, and the undertread rubber in the center region, respectively, L is a tire width direction dimension from a defined intersection point to a ground contact edge, and W is a tire width direction dimension of each shoulder region.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: March 21, 2023
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Hiroshi Fujii
  • Patent number: 11548209
    Abstract: A method for forming an uncured rubber component, the method includes conveying an uncured extruded rubber strip extruded continuously from an extruder using a conveyor, the conveyor including a first conveyor and a second conveyor located at a downstream side of the first conveyor in a convey direction, the step of conveying including shrinking the uncured extruded rubber strip, wherein the step of shrinking is such that the uncured extruded rubber strip, in a relaxed state of a U-shaped manner, passes through fluid held in a tank between the first conveyor and the second conveyor without being restrained so that the uncured extruded rubber strip shrinks freely while receiving buoyancy from the fluid, and cutting the uncured extruded rubber strip in a predetermined length to form an uncured rubber component, after the step of shrinking.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: January 10, 2023
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventor: Hirokazu Takahashi
  • Patent number: 11535058
    Abstract: A tire for a heavy vehicle of civil engineering type, intended to be fitted onto a rim, is provided. The nominal diameter of the tire is at least equal to 25 inches. The tire comprises a tread having a radial thickness HT at least equal to 30 mm. The tread has a composition based on at least one diene elastomer, a reinforcing filler predominantly comprising a filler at least partially covered with silica, an agent for coupling the filler to the at least one diene elastomer and a crosslinking system. The dispersion of the filler in the elastomeric matrix has a Z score of greater than or equal to 70.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: December 27, 2022
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Olivier Goncalves, Jean-François Olagnon
  • Patent number: 11534827
    Abstract: A roll stand, wherein at least two rolls for forming a workpiece are accommodated in the stand, and wherein a rolling force acting during the forming is supported by the roll stand, wherein the roll stand is produced by means of additive manufacturing.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: December 27, 2022
    Assignee: SMS group GmbH
    Inventors: Michael Baensch, Verena Thome
  • Patent number: 11492458
    Abstract: A rubber composition is based on at least one elastomer and at least one phenolic compound, the aromatic nucleus of said phenolic compound being substituted with at least one substituent comprising an oxygen atom, the molar mass of said phenolic compound being at most equal to 1000 g/mol, and said composition being free of molecular sulfur or comprising less than 1 phr thereof.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: November 8, 2022
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Anne-Lise Thuilliez, Odile Gavard-Lonchay
  • Patent number: 11440235
    Abstract: The method for the coextrusion of a complex profiled element made up of the assembly of profiled elements formed from distinct rubber compounds. A coextrusion machine comprises upstream and downstream extruders which deliver into an extrusion cavity. A first profiled element, formed of the first rubber compound, is created. The first profiled element comprises at least a first profiled-element portion which is intended to form a longitudinal insert, a base of which is in continuity of material with the first profiled element. A complex profiled element formed of the first and second rubber compounds is created. The insert is circulated between walls of a channel extend in a longitudinal direction between the upstream profiling blade and the downstream profiling blade and together form a concave surface open towards the inside of the extrusion cavity in such a way that the bringing-together of the lateral walls of the insert with the second compound takes place only in the downstream gap.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: September 13, 2022
    Assignee: Compagnie Generale Des Etablissements Michelin
    Inventors: Mickael Rouby, Christophe Bessac
  • Patent number: 11390117
    Abstract: A tire comprises a rubber composition based on at least an elastomer matrix comprising 20 to 70 phr of a first diene elastomer bearing at least one SiOR function, R being a hydrogen atom or a hydrocarbon radical, the SiOR function not located at the chain ends of the first diene elastomer, 20 to 70 phr of a second diene elastomer which is a polyisoprene, and optionally, 0 to 20 phr of a third diene elastomer; and a reinforcing filler comprising a reinforcing inorganic filler.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: July 19, 2022
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Makiko Watanabe, Hiroko Fukasawa
  • Patent number: 11358414
    Abstract: A tire has a sub-layer (7) made up substantially of a first base layer (71) disposed radially on the crown reinforcement (5) and axially between the median plane (CP) and a transition edge (711), the transition edge (711) being situated axially between the median plane (CP) and a shoulder (60), said first base layer (71) being made up of a rubber compound of given stiffness A, a second base layer (72) disposed radially on the crown reinforcement (5) and axially between the transition edge (711) and a shoulder end (721), said second base layer (72) being made up of a rubber compound of given stiffness B, a covering layer (73) disposed radially on the first base layer (71) and on the second base layer (72) and radially on the inside of the tread (6) and axially at least in sections situated between the median plane (CP) and the shoulder end (721), said covering layer (73) being made up of a rubber compound of given stiffness C, the stiffness B being less than the stiffness A, which is less than the stiffness C,
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: June 14, 2022
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Pascal Prost, Christopher Careme, David Dean
  • Patent number: 11254166
    Abstract: The invention provides for a heavy truck tire having a sub-casing, a belt package and a rubber tread, the tread comprising a center zone separating two shoulder zones. The upper shoulder layer consisting of an upper shoulder rubber compound being different from a lower shoulder rubber compound, wherein: the upper shoulder rubber compound has a G*50 of at least 1.3 Mpa and a max tan(?) of at least 0.12; the lower shoulder rubber compound has a max tan(?) not greater than the max tan(?) of a center rubber compound in the center zone being intended to come into contact with the ground; and the center rubber compound has a max tan(?) of at most 0.09.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: February 22, 2022
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Jeremy Trowbridge, Ronald Cress, Chaitra Mahesha
  • Patent number: 11214676
    Abstract: A curable liquid rubber composition including at least one liquid polyene component and at least one heat activated crosslinking agent. The liquid polyene component may be a single polyene or a blend of polyenes. In one embodiment, the liquid polyene component may contain on a molar basis, at least one monomer that results in at least 45 molar percent of C2-C13 pendant groups. In another embodiment, the liquid polyene component may contain on a molar basis at least one monomer that results in at least 20 molar percent of C2-C5 pendant groups, and at least one monomer that results in at least 7 molar percent of C6-C13 pendant groups. After curing, the liquid rubber composition may have a loss factor greater than 0.51, a maximum loss factor temperature greater than ?10° C., and a swelling ratio in toluene from 40% to 170% by weight.
    Type: Grant
    Filed: April 5, 2019
    Date of Patent: January 4, 2022
    Assignee: Fina Technology, Inc.
    Inventors: Olivier Defrain, Tomás̆ Trnka, Philippe Lodefier
  • Patent number: 11203691
    Abstract: It is intended to provide a carbon black which can confer reinforcing properties and low exothermicity, which are usually incompatible, as well as excellent abrasion resistance, when mixed with a rubber component, and is suitable for tire tread rubber that is used particularly under severe driving conditions. The present invention provides a carbon black having surface free energy ?d of 50 to 200 mJ/m2 determined by a reverse-phase gas chromatography analysis method and a strongly acidic group concentration of 0 to 0.115 ?mol/m2.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: December 21, 2021
    Assignee: TOKAI CARBON CO., LTD.
    Inventor: Kengo Kurisu
  • Patent number: 11179906
    Abstract: A set of molding elements suitable for being inserted into a mold for molding a tire comprises a main strip (1) and at least one secondary strip (2), the secondary strip (2) comprising a first secondary strip portion (3) and a second secondary strip portion (4), the second secondary strip portion (4) extending the first secondary strip portion and the first (3) and second (4) secondary strip portions extending on either side of the main strip (1) and the set of molding elements comprising members to assemble the secondary strip (2) with the main strip (1).
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: November 23, 2021
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Frédéric Massis, Laurent Nadreau
  • Patent number: 11084329
    Abstract: The tread is provided with a plurality of grooves and/or a plurality of incisions. The tread also has rubber layers laminated in a radial orientation. One rubber layer has a cap rubber layer and a base rubber layer. A modulus G* of the rubber composition constituting the base rubber layer is no more than 2 MPa at ?10° C. with imposed shear stress of 0.25 MPa and is at least 0.7 MPa at 40° C. with imposed shear stress of 0.70 MPa. A modulus G* of the rubber composition constituting the cap rubber layer is at least 1 MPa higher than the modulus G* of the the base rubber layer at ?10° C. with imposed shear stress of 0.25 MPa and is less than the modulus G* of the rubber composition at 40° C. with imposed shear stress of 0.70 MPa.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: August 10, 2021
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Tomotake Uchida, Gael Roty, Tomoya Sakurada
  • Patent number: 10995251
    Abstract: A method and drilling fluid additive for reducing severe fluid losses in a well, comprising a combination of granular scrap tire particles and polymer adhesive molded into a capsule shape. Once in the severe loss zone, a plurality of LCMs wedge into the formation fractures and seal off the severe loss zone.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: May 4, 2021
    Assignee: Saudi Arabian Oil Company
    Inventors: Md Amanullah, Raed A. Alouhali, Mohammed K. Arfaj
  • Patent number: 10975283
    Abstract: A method and drilling fluid additive for reducing severe fluid losses in a well, comprising a combination of granular scrap tire particles and polymer adhesive molded into a cone shape. Once in the severe loss zone, a plurality of LCMs wedge into the formation fractures and seal off the severe loss zone.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: April 13, 2021
    Assignee: Saudi Arabian Oil Company
    Inventors: Md Amanullah, Raed A. Alouhali, Mohammed K. Arfaj
  • Patent number: 10941326
    Abstract: A method and drilling fluid additive for reducing severe fluid losses in a well, comprising a combination of granular scrap tire particles and polymer adhesive molded into a capsule shape. Once in the severe loss zone, a plurality of LCMs wedge into the formation fractures and seal off the severe loss zone.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: March 9, 2021
    Assignee: Saudi Arabian Oil Company
    Inventors: Raed A. Alouhali, Md Amanullah, Mohammed K. Arfaj, Turki Alsubaie
  • Patent number: 10941327
    Abstract: A method and drilling fluid additive for reducing severe fluid losses in a well, comprising a combination of granular scrap tire particles and polymer adhesive molded into a spherical shape. Once in the severe loss zone, a plurality of LCMs wedge into the formation fractures and seal off the severe loss zone.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: March 9, 2021
    Assignee: Saudi Arabian Oil Company
    Inventors: Mohammed K. Arfaj, Md Amanullah, Raed A. Alouhali, Turki Alsubaie
  • Patent number: 10933699
    Abstract: A tire having reduced mass and low rolling resistance and a method of manufacture thereof achieves reduced weight by using thin layers of thermoplastic polyurethanes (“TPU's”) to heat seal the carcass, breaker, and tread layers of the tire to each other, rather than embedding the layers in conventional, relatively thicker and heavier layers of sulfur cured vulcanized carbon filled elastomers. Creep and “spring-back” of the thermoplastic polyurethanes during cure is avoided by maintaining the adhered layers under pressure until the assembly cools below its glass transition temperature. In embodiments, the heat sealing can be performed on the forming drum, and in some embodiments cool rollers are applied to the heat-sealed carcass so as to accelerate the cooling to below the glass transition temperature.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: March 2, 2021
    Assignee: Warwick Mills, Inc.
    Inventor: Charles A Howland
  • Patent number: 10919340
    Abstract: Provided are a cap tread rubber composition for cold weather tires providing a balanced improvement in fuel economy, abrasion resistance, chipping resistance, performance on ice and snow during high-speed running, and high-speed performance (handling stability, grip performance) on snow/ice-free cold roads, and a cold weather tire formed therefrom. The rubber composition contains: a rubber component including an isoprene-based rubber, BR, and SBR; silica; and a plasticizer, the isoprene-based rubber and the BR being present in a combined amount of 80% by mass or more, the BR being present in an amount of 30% by mass or more, the SBR being present in an amount of 0.3-10% by mass, each based on 100% by mass of the rubber component, the rubber composition containing, per 100 parts by mass of the rubber component, 120 parts by mass or more of the silica and 50 parts by mass or more of the plasticizer.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: February 16, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yuka Yokoyama
  • Patent number: 10780742
    Abstract: In a tire, a tread rubber includes a first layer which is grounded on a road surface in an outer peripheral surface thereof, and a second layer which is joined to an inner peripheral surface of the first layer in an outer peripheral surface thereof, the first layer includes a joint portion where rubbers having different elastic modulus are joined, and the second layer is formed by a rubber having a greater elastic modulus than an elastic modulus of at least one of the rubbers constructing the first layer.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: September 22, 2020
    Assignee: TOYO TIRE CORPORATION
    Inventor: Hirokazu Sakata
  • Patent number: 10767034
    Abstract: The present invention is directed to a pneumatic tire having a tread comprising a vulcanizable rubber composition comprising, based on 100 parts by weight of elastomer (phr), (A) from about 30 to about 50 phr of a first solution polymerized styrene-butadiene rubber having a glass transition temperature (Tg) ranging from ?80° C. to ?50° C. and functionalized with an alkoxysilane group and at least one functional group selected from the group consisting of primary amines and thiols; (B) from about 30 to about 50 phr of a second solution polymerized styrene-butadiene rubber having a glass transition temperature (Tg) ranging from ?40° C. to ?10° C. and functionalized with an alkoxysilane group and at least one functional group selected from the group consisting of primary amines and thiols; (C) from 0 to about 40 phr of a polyisoprene having a cis 1,4 content greater than 95 percent; (D) from 20 to 60 phr of a hydrocarbon resin having a Tg of at least 30° C.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: September 8, 2020
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Pascal Patrick Steiner, Frida Nzulu, Jérôme Joel Daniel Delville, Manuela Pompei
  • Patent number: 10744733
    Abstract: This invention discloses a tire having enhanced wet traction and ice traction characteristics. These tires are comprised of a generally toroidal-shaped carcass with an outer circumferential tread, two spaced beads, at least one ply extending from bead to bead and sidewalls extending radially from and connecting said tread to said beads, wherein said tread is adapted to be ground-contacting, wherein the tread includes at least one circumferential groove which separates circumferential ribs, each circumferential groove having two sides and a base therebetween, and wherein the sides of each circumferential groove are comprised of a rubbery composition that includes silicate microflakes which are substantially aligned in an orientation which is parallel with the sides of the grooves.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: August 18, 2020
    Assignee: THE GOODYEAR TIRE & RUBBER COMPANY
    Inventors: Paul Harry Sandstrom, John Joseph Andre Verthe, Ping Zhang
  • Patent number: 10738179
    Abstract: The invention relates to a sulfur-crosslinkable rubber mixture, especially for the sidewall of pneumatic vehicle tires, and to a pneumatic vehicle tire whose sidewall consists at least partly of the sulfur-crosslinked rubber mixture. For reduced hysteresis, hence leading to low rolling resistance when used as a sidewall mixture, the rubber mixture comprises 20 to 80 phr of natural rubber and/or synthetic polyisoprene, 20 to 80 phr of at least one polybutadiene functionalized for attachment to silica and 20 to 50 phr of at least one silica with a CTAB surface area (to ASTM D 3765) of 50 to 130 m2/g and a nitrogen surface area (BET surface area) (to DIN ISO 9277 and DIN 66132) of 60 to 140 m2/g.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: August 11, 2020
    Assignee: Continental Reifen Deutschland GmbH
    Inventors: Vipin Rajan, Martin Francke, Marion Schellenberg, Catarina Sa
  • Patent number: 10703141
    Abstract: Disclosed are pneumatic vehicle tires and methods of their production, the tires comprising a tread that has a tread segment arranged radially on the outside, and a material strip that is arranged helically in windings approximately in the circumferential direction, wherein, in the region of the tread segment, the material strip has at least two layers in the longitudinal direction of the material strip, wherein the first layer is formed from a first rubber compound and the second layer is formed from a second rubber compound, and wherein the layers connect the radially outer surface to the radially inner surface of the tread segment. The disclosed pneumatic vehicle tire has lower noise emissions and more uniform wear during driving and is improved in respect of at least one conflict of aims.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: July 7, 2020
    Assignee: Continental Reifen Deutschland GmbH
    Inventors: Mohamed Aymen Jabri, Viktoria Pavon Sierra, Sven Kastens
  • Patent number: 10688827
    Abstract: A tire has a cap rubber formed of nonconductive rubber and forms a ground surface, and a conductive portion provided in at least one side end portion of a pair of side end portions in both ends in a tire width direction. The conductive portion is formed of a conductive rubber, and reaches a side surface of the cap rubber from the ground surface through an inner portion of the cap rubber. The conductive portion is relatively small in a thickness in the ground surface and a side surface of the cap rubber, is relatively large in the maximum thickness of an intermediate portion between the ground surface and the side surface of the cap rubber, and is formed into a crescent shape which is curved into an outer side in a tire width direction and an outer side in a radial direction, in a tire meridian cross section.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: June 23, 2020
    Assignee: TOYO TIRE CORPORATION
    Inventor: Kunihiko Nagai
  • Patent number: 10639944
    Abstract: A tire has a cap rubber formed of nonconductive rubber and forms a ground surface, and a conductive portion provided in at least one side end portion of a pair of side end portions in both ends in a tire width direction. The conductive portion is formed of a conductive rubber, and reaches a side surface of the cap rubber from the ground surface through an inner portion of the cap rubber. The conductive portion is relatively small in a thickness in the ground surface and a side surface of the cap rubber, is relatively large in the maximum thickness of an intermediate portion between the ground surface and the side surface of the cap rubber, and is formed into a crescent shape which is curved into an inner side in a tire width direction and an inner side in a radial direction, in a tire meridian cross section.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: May 5, 2020
    Assignee: TOYO TIRE CORPORATION
    Inventor: Kunihiko Nagai
  • Patent number: 10632789
    Abstract: A tire has a cap rubber formed of a nonconductive rubber and forms a ground surface, and a conductive portion provided in at least one side end portion of a pair of side end portions in both ends in a tire width direction. The conductive portion is formed of a conductive rubber, and reaches a side surface of the cap rubber from the ground surface through an inner portion of the cap rubber. The conductive portion is the smallest in thickness in the ground surface, is relatively large in thickness in the side surface of the cap rubber, is gradually increased in thickness from the ground surface to the side surface of the cap rubber, and is formed into a trumpet shape which is curved into an inner side in a tire width direction and an inner side in a radial direction, in a tire meridian cross section.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: April 28, 2020
    Assignee: TOYO TIRE CORPORATION
    Inventor: Kunihiko Nagai
  • Patent number: 10526424
    Abstract: The present invention discloses a method for preparing high-performance tread rubber through a filler silylation reaction catalyzed in situ by an ionic liquid. The method is as follow: adding a gum rubber, a filler, a silane and an ionic liquid successively into an open mill or an internal mixer for mixing to obtain a rubber compound; high-temperature remilling the rubber compound; adding a vulcanizing package and an anti-aging agent into the remilled rubber compound at room temperature; and vulcanizing the rubber compound to obtain a vulcanized rubber.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: January 7, 2020
    Assignees: SOUTH CHINA UNIVERSITY OF TECHNOLOGY, BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY, JIAXING BEIHUA POLYMER ADDITIVES CO., LTD., BEIJING RED AVENUE INNOVA CO., LTD.
    Inventors: Baochun Guo, Jing Huang, Zhenghai Tang, Liqun Zhang, Yonglai Lu, Minli Sun, Qinghua Zhang, Ning Zhang, Dong Dong
  • Patent number: 10457101
    Abstract: A pneumatic vehicle tire for passenger cars, vans or the like has a radial carcass, a multi-ply belt, and a profiled tread that, as viewed in the axial direction, has a central portion and two shoulder portions. The shoulder portions include a rubber mixture that has a lower dynamic modulus of elasticity E? (at 55° C. and 8% elongation according to DIN 53513) than the central portion. The central portion has extensions at the base thereof, running laterally substantially parallel to the tread substructure and radially inside and across the width of the shoulder portions.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: October 29, 2019
    Assignee: Continental Reifen Deutschland GmbH
    Inventors: Heiner Volk, Christian Struebel, Norbert Mueller
  • Patent number: 10358001
    Abstract: In a pneumatic tire including a plurality of main grooves extending in a tire circumference direction and ribs interposed between the two main grooves out of the plurality of main grooves, the ribs include a narrow groove including first narrow groove portions extending in one direction and second narrow groove portions extending in a direction different from the one direction and being arranged alternately in a zigzag pattern, the first narrow groove portions each include a bent portion and a narrow groove bottom sipe at a groove bottom of a portion including the bent portion.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: July 23, 2019
    Assignee: TOYO TIRE CORPORATION
    Inventor: Tsuyoshi Fujioka
  • Patent number: 10315466
    Abstract: A pneumatic tire includes a side wall having a side surface and a roughened region formed on the side surface such that the roughened region is extending in circumferential direction. The roughened region includes lands and dimples formed between adjacent lands, the lands include first lands and second lands formed such that the first and second lands are alternately arrayed in the circumferential direction and the first and second lands are inclined relative to radial direction in opposite inclination directions, and the roughened region is formed such that when the tire is mounted on a normal rim and filled with air at normal inflation pressure, the roughened region has an outer periphery formed on radially inner side of position 30 mm away in radially inward direction from tire maximum-width position, and the roughened region has an inner periphery formed on radially outer side of radially outer edge of the rim.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: June 11, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES LTD.
    Inventors: Kentaro Yagyu, Naoki Yukawa, Yasuo Mitarai, Yasuaki Kuniyasu
  • Patent number: 10300744
    Abstract: A tire comprises a tread portion 2 comprising blocks 20. At least one of the blocks has a first block wall (25a), a second block wall (25b), and a first region (26a) and a second region (26b) divided by a crossing sipe 30. In a plan view, the first and second block walls (25a) and (25b) are each formed in a convex V-shape so as to have an apex portion 27 protruding toward the outside of the block. The crossing sipe 30 has a first end (28a) positioned on a first side of the apex portion 27 of the first block wall (25a) and a second end (28b) positioned on a second side of the apex portion 27 of the second block wall (25b) in the tire circumferential direction. The first and second regions (26a) and (26b) each have a closed sipe 38 having both ends terminating within the region.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: May 28, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Kae Ito
  • Patent number: 10301459
    Abstract: The invention relates to a pneumatic tire with a circumferential tread composition which contains a unique combination of styrene/butadiene elastomers, both solution and emulsion prepared, a plurality of traction promoting resins and reinforcing filler which contains a specific combination of a selected carbon black and a pre-hydrophobated precipitated silica.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: May 28, 2019
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Renee Marie Weber, Paul Harry Sandstrom, Matthew James Ritter, Paul Joseph Endres
  • Patent number: 10279629
    Abstract: A tire in which a reinforcement layer and a tread section are laminated in this order from the inside toward the outside in a radial direction of the tire. The tread section includes an inner base layer, an outer base layer, and a cap layer that are laminated in this order from the inside toward the outside in the radial direction of the tire. The cap layer is made of a material of which a modulus of elasticity and a loss tangent are lower than those of a material of the outer base layer. The inner base layer is made of a material of which a modulus of elasticity is lower than that of a material of the cap layer.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: May 7, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Kento Hashimoto, Akinori Oda
  • Patent number: 10273352
    Abstract: A pneumatic tire using as a tread part, a rubber composition containing a high silica-content rubber composition having a difference F-S between an amount of filler F and an amount of a softening agent S of 60 to 90 parts by weight and having a durometer hardness measured at 20° C. of 65 to 76.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: April 30, 2019
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Naoya Amino, Yoshihiro Kameda, Kazuto Yamakawa, Akitomo Sato
  • Patent number: 10259267
    Abstract: A pneumatic tire for a motorcycle that secures durability while improving grip performance in turning. A pneumatic tire for a motorcycle including a belt containing a belt layer formed by coating a plurality of cords with rubber in a tire tread, wherein the tread is provided with cushion rubbers separated from each other in the tire widthwise direction in both sides of the tire equatorial plane by a separated region and located outward in the tire radial direction from the belt, and a base rubber having a modulus higher than those of the cushion rubbers located in the separated region or outward in the tire radial direction therefrom, and Wn, a length of the separated region, and Wb, a length of the base rubber in the cross section in the tire widthwise direction, satisfy the relation: Wn?Wb.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: April 16, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Yukihiko Kubo
  • Patent number: 10252574
    Abstract: To increase a restraining force to a belt layer and to improve the durability of the tire. A band layer of a spirally wound band-like ply includes: a first ply portion extending from a starting end located between the tire equator and one end in the tire axial direction of a belt layer to the one end in the tire axial direction of the belt layer; a second ply portion extending from the one end in the tire axial direction of the first ply portion to the other end in the tire axial direction of the belt layer; and a third ply portion extending from the other end in the tire axial direction of the second ply portion to a terminal end located between the tire equator and the other end in the tire axial direction of the second ply portion. The band-like ply is continuous from the starting end to the terminal end without interruption.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: April 9, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Masashi Komaki