Tire Characterized By Its Air Impervious Liner Or Inner Tube Patents (Class 152/510)
  • Patent number: 11453255
    Abstract: The pneumatic tire includes: a belt layer, a belt reinforcing layer, a tread portion, sidewall portions, a rim cushion rubber, and an electrically conductive rubber disposed in the rim cushion rubber and includes a first end in contact with a rim and exposed on an outer surface of the rim cushion rubber and a second end in contact with a tire component adjacent to the rim cushion rubber. The electrical resistance value of the electrically conductive rubber and a portion of the tread portion is 1×106 ?·cm or less. The electrical resistance value of the tire component, a coating rubber of the belt layer, and a coating rubber of the belt reinforcing layer is from 1×106 ?·cm to 1×108 ?·cm. The electrical resistance value of the rim cushion rubber and a side rubber of the sidewall portions is 1×108 ?·cm or greater.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: September 27, 2022
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Isamu Kishizoe
  • Patent number: 11453250
    Abstract: In a pneumatic tire, a carcass layer is between bead portions, a bead core is in each bead portion, a reinforcement layer is on an outer side of the carcass layer, and a tread rubber layer is on the outer side of the reinforcement layer. A pair of first boundary lines passes through an intersection of an extension of a side arc forming a tread profile and an extension of a shoulder arc and orthogonal to a tire inner surface, a pair of second boundary lines passes through a rim check line and orthogonal to the tire inner surface, first to third regions are defined which have cross sectional areas of SA, SB, and SC, respectively, and the first to third regions respectively have lengths of a, b, and c along the tire inner surface such that 7.5?SA/a?11.5 and 2.0?SB/b?6.0 are satisfied.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: September 27, 2022
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Masatoshi Shimizu, Masatoshi Kuwajima
  • Patent number: 11306954
    Abstract: A valve system includes a motor, a first valve, a second valve, and a controller. The first valve is connected to the motor shaft and is rotatable to an open position, in which fluid flows through a first channel, and a close position, in which fluid is prevented from flowing through the first channel. The second valve is connected to the motor shaft and is rotatable to an open position, in which fluid flows through a second channel from a first end to a second end, and to a close position, in which fluid is prevented from flowing through the second channel. The controller is connected to the motor and can sequentially actuate the first valve and the second valve to create at least a first, second, third, and fourth position.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: April 19, 2022
    Assignee: Emerson Electric Co.
    Inventors: Jeffrey N. Arensmeier, Jacob Harris, Thomas P. Buescher, John M. Bronson, Gregory E. Sisk, Christina M. Gillam
  • Patent number: 11235620
    Abstract: A pneumatic tire comprising a carcass 11, at least one inclined belt layer 13 having a cord extending inclined at an angle of 30° or more relative to the tire circumferential direction, and a tread 15 arranged outward in the tire radial direction of the inclined belt layer 13, wherein a circumferential cord layer 14 arranged inward in the tire radial direction of the tread 15 has a high-rigidity region and a low-rigidity region and the high-rigidity region has a lower negative ratio in a ground contact width of the tread 15 than the low-rigidity region.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: February 1, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Isao Kuwayama
  • Patent number: 11124023
    Abstract: A laminate of a thermoplastic resin or thermoplastic elastomer composition film and a rubber composition layer, which can be used as an inner liner for a pneumatic tire, with improved adhesive strength at the interface of the thermoplastic resin or thermoplastic elastomer composition film and the rubber composition layer. A laminate comprising a thermoplastic resin or thermoplastic elastomer composition film and a rubber composition layer, the rubber composition containing a rubber component, a condensate of a phenol compound and formaldehyde, and methylene donor and a vulcanizing agent, wherein 2.5-40% by mass of the rubber component is butyl rubber or halogenated butyl rubber, the content of the condensate is 0.5-20 parts by mass per 100 parts by mass of the rubber component, and the content of the methylene donor is 0.25-200 parts by mass per 100 parts by mass of the rubber component.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: September 21, 2021
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventor: Hirokazu Shibata
  • Patent number: 11097571
    Abstract: A tire having a tire frame, the tire frame comprising a thermoplastic elastomer as a resin material, and the thermoplastic elastomer having a value of orientation f, as measured by a small angle X-ray scattering method, of from ?0.08 to 0.08.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: August 24, 2021
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Hiromasa Yamashita
  • Patent number: 11078386
    Abstract: A method of adhering a first component to a second component includes priming the first component with an adhesive bond primer containing a primer material, a corrosion inhibitor, and a chemical additive (such as a dye compound), and using an adhesive to attach the second component to the first component through the adhesive bond primer applied on the surface of the second component. The chemical additive allows inspection of the adhesive bond primer with a corresponding radiation source.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: August 3, 2021
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Sean C. Emerson, Blair A. Smith, Weina Li, Georgios S. Zafiris, Bart Antoine Van Hassel
  • Patent number: 11051087
    Abstract: An electronic assembly (1) for a tire comprises an electronic module (30) and a rubber patch (10) provided with a housing (14) suitable for allowing the positioning of an active part of the electronic module (30) in said housing (14), wherein the patch (10) is configured according to a substantially elongate axial profile with a base (12) and a top (19) separated by a lateral wall (11), said patch (10) comprising a lateral opening (13) communicating with the housing (14); the electronic module (30) is configured according to a substantially elongate axial profile and comprises a gripping head (31) extending axially so as to project out of the patch (10); and the gripping head (31) of the electronic module (30) is covered with a protective rubber jacket (20).
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: June 29, 2021
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Lionel Fagot-Revurat, Thomas Mosnier
  • Patent number: 10844219
    Abstract: Body ply skim compound comprising a cross-linkable unsaturated chain polymer base, a filler material, a vulcanization system and a polyepihalohydrin rubber. The compound comprises epoxidized natural rubber as a cross-linkable unsaturated chain polymer base and a laminated structure material as a filler material.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: November 24, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Jose' Antonio Silicani, Paolo Fiorenza
  • Patent number: 10486475
    Abstract: A tyre including two toroidal bead portions housing an annular bead bundle (121); a toroidal body ply, folded, about a respective bead bundle forming a respective turn-up; two bead fillers, each in contact with a respective bead bundle and at least partly enclosed by a respective turn-up, and two elastomeric crack control members, one for each bead portion. Each crack control member extends at a body ply ending, and each crack control member is made by a couple of strips having a differentiated stiffness along their transversal section, with a lower stiffness at a first strip adjacent to the body ply ending and a higher stiffness at a second strip in contact with the respective bundle, so that the first lower stiffness strip defines a preferential propagation path for any tyre crack originating at the body ply folded ending.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: November 26, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Marco Toscano
  • Patent number: 10479145
    Abstract: A tire 2 includes: a pair of beads 10 including cores 28; chafers 22, disposed near the beads 10, which are brought into contact with a rim; an inner liner 18 disposed inward of a carcass 32 in an axial direction; and an insulation 20 disposed between the carcass 32 and the inner liner 18 in the axial direction. The chafers 22 include bottom surfaces 22a that are brought into contact with the rim in portions inward of the cores 28 in a radial direction. The insulation 20 includes insulation lower portions 20a disposed between the cores 28 and the bottom surfaces 22a of the chafers 22 in the radial direction. The inner liner 18 includes inner liner lower portions 18a disposed between the cores 28 and the bottom surfaces 22a of the chafers 22 in the radial direction.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: November 19, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Takuya Osawa, Kenji Ueda
  • Patent number: 10427457
    Abstract: A tire comprising an outer tread layer, intermediate sidewall and carcass layers and an innermost air permeation prevention layer: (i) the air permeation prevention (APP) layer having an upper and a lower surface, the layer having a polymer composition exhibiting an air permeation coefficient (APC) of about 25×10?12 cc cm/cm2 sec cmHg (at 30° C.) or less and a Young's modulus of about 1 MPa to about 500 MPa, the polymer composition comprising: (A) at least 10 wt % of at least one thermoplastic resin component having an APC of about 25×10?12 cc cm/cm2 sec cmHg (at 30° C.) or less and a Young's modulus of more than 500 MPa, which is preferably a polyamide resin or mixture, and (B) at least 10 wt % of at least one elastomer component having an APC of more than about 25×10?12 cc cm/cm2 sec cmHg (at 30° C.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: October 1, 2019
    Assignees: EXXONMOBIL CHEMICAL PATENTS INC., THE YOKOHAMA RUBBER CO., LTD.
    Inventors: Andy Haishung Tsou, Stephan Bertil Ohlsson, Yoshihiro Soeda, Shusaku Tomoi, Yuichi Hara
  • Patent number: 10421318
    Abstract: A pneumatic tire includes film layers of thermoplastic resin or thermoplastic elastomer composition made by blending an elastomer with the thermoplastic resin, which are superposed by winding the film layer in the circumferential direction of the tire multiple times, a thickness of the film layer is in a range of 0.02 mm to 0.2 mm and a thickness of the rubber layer is in a range of 0.1 mm to 1.2 mm, and the tire wherein a rubber film is interposed between the film layers. The pneumatic tire is produced by preparing a laminated body in which the rubber layer is stuck to at least one surface of the film layer; interposing the rubber layer between the film layers by winding the laminated body in the circumferential direction of the tire multiple times; forming an uncured tire which includes the film layers and the rubber layers; and curing the tire.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: September 24, 2019
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Yoshiaki Hashimura, Takumi Hatakeyama
  • Patent number: 10399391
    Abstract: A tire with a built-in puncture sealant comprising a supporting tire carcass comprised of one or more layers of ply, an outer circumferential tread, and a radially inner layer, a pair of beads, sidewalls extending radially inward from the axial outer edges of the tread portion to join the respective beads, a sealant comprising an outer layer of sealant and an inner layer of sealant, disposed inwardly from said tire carcass inner layer, wherein the outer layer of sealant and the inner layer of sealant have different viscosities, and wherein said sealant provides self-sealing properties to the tire.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: September 3, 2019
    Assignee: Triangle Tyre Co., Ltd.
    Inventors: Ramendra Nath Majumdar, Edward L. Montgomery, Changliang Fan, Lingbo Dong, Dapeng Wang
  • Patent number: 10232668
    Abstract: This pneumatic tire is provided with: a pair of carcass layers arranged so as to extend from the respective left and right beads of the tire across the tread; and a plurality of crossing belts arranged on the outside of the carcass layers in the radial direction of the tire. The pair of carcass layers is arranged so as to overlap each other in the tire width direction. The overlapping width (Wc) of the carcass layers is in the range of 0.5 mm?Wc?40 mm.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: March 19, 2019
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Hiroshi Hata, Yoshiaki Hashimura
  • Patent number: 10207541
    Abstract: A pneumatic radial tire for a passenger vehicle according to the present invention has an appropriate relationship between a tire cross-sectional width SW and a tire outer diameter OD. Also, a method of using the pneumatic radial tire for a passenger vehicle according to the present invention is to use the above radial tire with at least specified internal pressure.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: February 19, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Isao Kuwayama, Hiroyuki Matsumoto, Shintaro Hatanaka
  • Patent number: 10183530
    Abstract: With respect to a laminate of a film formed of a thermoplastic resin or thermoplastic elastomer composition and a layer formed of a rubber composition in which an epoxidized natural rubber is blended, the adhesion between the film and the layer of the rubber composition is improved without using a large amount of the epoxidized natural rubber. A laminate of a film formed of a thermoplastic resin or thermoplastic elastomer composition and a layer formed of a rubber composition, said laminate being characterized in that: 5-60% by mass of a rubber component contained in the rubber composition is composed of an epoxidized natural rubber and 20-50% by mass of the rubber component is composed of a butadiene rubber; and the rubber composition contains an unsubstituted or substituted aromatic carboxylic acid having a pKa of 1.5-4.0 in an amount of 0.5-5 parts by mass per 100 parts by mass of the rubber component.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: January 22, 2019
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Hirokazu Shibata
  • Patent number: 10160263
    Abstract: The present invention relates to a pneumatic tire having a non-spliced film innerliner comprised of a plurality of film layers where said film layers are of varied film moduli physical properties.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: December 25, 2018
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Byoung Jo Lee, Philip Alan Dunker, John Fleming Brainerd, II
  • Patent number: 10124627
    Abstract: A tire can deliver improved on-ice performance with a reduced rolling resistance. The tire includes a foam rubber layer in a tread that comes into contact with a road surface, wherein a foaming ratio of the foam rubber layer is in a range from 3% to 50%, a rubber composition forming the foam rubber layer includes ethylene-vinylalcohol copolymer fiber coated with a resin having affinity for a rubber component, and the rubber composition forming the foam rubber layer includes 5 to 30 parts by mass at least one type of inorganic compound powder with respect to 100 parts by mass the rubber component, the inorganic compound powder having an average particle diameter greater than or equal to 10 ?m and expressed by the following general formula (I). M.xSiO2.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: November 13, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Satoshi Ishikawa
  • Patent number: 10093135
    Abstract: A pneumatic tire includes a carcass ply wound up from an inner side to an outer side around bead cores, chafers wound up from an outer side to an inner side around the bead cores, and an inner liner rubber which is arranged in an inner side of the carcass ply, wherein a squeegee rubber having a higher modulus than the inner liner rubber is provided closer to the inner liner rubber side than the chafers between the carcass ply and the inner liner rubber, and the squeegee rubber is arranged so as to cover inside wound-up ends of the chafers, and is provided with a thick portion which is thicker than the inner liner rubber, and thin portions which are arranged respectively in an inner side and an outer side in the tire diametrical direction of the thick portion and are thinner than the inner liner rubber.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: October 9, 2018
    Assignee: TOYO TIRE & RUBBER CO., LTD.
    Inventor: Yuji Izuhara
  • Patent number: 10076932
    Abstract: A multilayered structure having a layer A constituted with a resin composition containing a gas barrier resin, and a layer B being adjacent to the layer A and being constituted with a resin composition containing an elastomer. The total number of the layer A and the layer B is at least 7. The average thickness of the layer A in terms of a single layer is no less than 0.001 ?m and no greater than 10 ?m, and the average thickness of the layer B in terms of a single layer is no less than 0.001 ?m and no greater than 40 ?m. The multilayered structure is formed by irradiating with an active energy ray. Furthermore, an inner liner having the multilayered structure, and a pneumatic tire provided with the inner liner are provided.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: September 18, 2018
    Assignees: Kuraray Co., Ltd., BRIDGESTONE CORPORATION
    Inventors: Yuwa Takahashi, Shinji Tai, Masao Hikasa, Hideki Kitano, Tetsuo Amamoto, Takatsugu Tanaka
  • Patent number: 10035901
    Abstract: A rubber composition for use in tires comprises: WT part(s) by weight of an aromatic modified terpene resin having a softening point of 100° C. or higher per 100 parts by weight of a diene rubber, the diene rubber containing a total of 50% by weight or greater but less than 90% by weight of a butadiene rubber and an emulsion-polymerized styrene butadiene rubber, wherein the butadiene rubber is contained in an amount of 35% by weight or greater but less than 65% by weight and the emulsion-polymerized styrene butadiene rubber is contained in an amount so that an amount of bonded styrene is 35% by weight or greater. In the rubber composition, the ratio of the compounded amount of the butadiene rubber (WB part(s) by weight) to the compounded amount of the aromatic modified terpene resin (WB/WT) is from 2.5 to 5.0.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: July 31, 2018
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Miyuki Nakajima
  • Patent number: 10017012
    Abstract: A pneumatic tire is configured in such a manner that at least two carcass layers each have both end portions in the tire width direction extending to bead cores disposed in both bead portions, and the both end portions are wound up from the inner side in the tire width direction of the bead cores to the outer side in the tire width direction, and extend outward in the tire radial direction. In such a pneumatic tire, the carcass layers are formed by thermoplastic sheets, and a rubber layer is disposed at least between adjacent sheets of the thermoplastic sheets.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: July 10, 2018
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Jun Matsuda, Yuji Satoh, Masayuki Watanabe, Hirokazu Shibata
  • Patent number: 10005891
    Abstract: There is provided a polymer film which includes a base film layer having an absolute weight average molecular weight of 50,000 to 1,000,000 and an adhesive layer, and a method for manufacturing the polymer film. This film for a tire inner liner can endow an excellent gas barrier property even to tires having a relatively thin thickness so that weight of the tire can be reduced and fuel efficiency of automobiles can be improved. Further, the present film facilitates molding in a tire manufacturing process, and exhibits excellent adhesion force to a carcass layer while having excellent mechanical properties such as high durability and fatigue resistance together with excellent moldability.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: June 26, 2018
    Assignee: KOLON INDUSTRIES, INC.
    Inventors: Young-Han Jeong, So-Yeon Kwon, Hyun Namgoong, Seong-Hun Kim
  • Patent number: 9975378
    Abstract: The present disclosure relates to a rolled multilayer tire inner liner product and processes or methods for preparing a rolled multilayer tire inner liner product. The product comprises a film layer, two adhesive layers (each directly contacting one outer surface of the film layer) and at least one removable partitioning sheet layer contacting the outer surface of at least one of the adhesive layers. The process includes co-extrusion of a film layer and two adhesive layers, addition of at least one partitioning sheet layer to at least one of the adhesive layers either during the co-extruding step or directly thereafter (and may be a mixture of both if more than one partitioning sheet layer is present) and rolling of the layers together (such that if there is only one partitioning sheet layer it faces inward) to form a rolled multilayer tire inner liner product.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: May 22, 2018
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventor: Michael S. James
  • Patent number: 9969217
    Abstract: A laminate comprising at least one layer of a first thermoplastic resin composition alternately stacked with at least two layers of a second thermoplastic resin composition so that the outermost layers are the layers of the second thermoplastic resin composition, wherein the first thermoplastic resin composition comprises at least one selected from the group consisting of ethylene-vinyl alcohol copolymer and modified ethylene-vinyl alcohol copolymers, and the second thermoplastic resin composition has a different composition from the first thermoplastic resin composition, and wherein, in any adjacent pair of the layer of the first thermoplastic resin composition and the layer of the second thermoplastic resin composition, the layer of the first thermoplastic resin composition and the layer of the second thermoplastic resin composition have a specific tensile modulus ratio and a specific thickness ratio.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: May 15, 2018
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Shusaku Tomoi, Yuichi Hara
  • Patent number: 9937753
    Abstract: The invention relates to a tire comprising a crown reinforcement formed of at least two working crown layers of reinforcing elements the ends of which are radially uncoupled by a polymer compound. According to the invention, the reinforcing elements of at least one working crown layer are metal cords with saturated layers, at least one internal layer being sheathed with a layer consisting of a polymer composition such as a rubber composition and in each of the shoulders of the tire, at least the uncoupling polymer compound in contact with the ends of at least two working crown layers exhibits, in the sorption test, a gas content lower than 0.06 m3STP/m3ML.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: April 10, 2018
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventors: Jacques Besson, Aurore Lardjane, François Dimier
  • Patent number: 9919561
    Abstract: Provided is an adhesive composition that provides excellent adhesion between a thermoplastic resin or a thermoplastic elastomer in which an elastomer component is dispersed in the thermoplastic resin and a tire by a combination of general-purpose materials, without using any special polymer. The adhesive composition comprises 100 parts by weight of a base polymer and 20 to 50 parts by weight of a resol-type phenolic resin-based resin crosslinking agent, wherein 100 parts by weight of the base polymer comprises 80 to 99 parts by weight of a thermoplastic elastomer and 1 to 20 parts by weight of a halogenated rubber. The resol-type phenolic resin-based resin crosslinking agent is preferably an alkylphenol-formaldehyde resin. Examples of the thermoplastic elastomer can include styrene-butadiene-styrene block copolymers, and examples of the halogenated rubber can include chloroprene rubber and chlorosulfonated polyethylene.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: March 20, 2018
    Assignee: THE YOKOHAMA RUBBER CO., LTD.
    Inventor: Shusaku Tomoi
  • Patent number: 9884521
    Abstract: In a side reinforcing type run flat tire, a minimum wall thickness portion is arranged between an end portion of each belt layer and a position at 70% of a tire cross-sectional height SH. A relationship between a thickness Gmin of the minimum wall thickness portion and a thickness Gmax of a maximum wall thickness portion 17 is 0.5×Gmax?Gmin?0.8×Gmax. A relationship between a length L min of a thin wall region and the tire cross-sectional height SH is 0.18×SH?Lmin?0.26×SH. A relationship among a weight Wr of a side reinforcing layer, a total weight Wt of the tire, and a tire flattening rate R is 0.08×Wt×(1?0.2×(1?R/50))?Wr?0.18×Wt×(1?0.2×(1?R/50)). A relationship between a thickness Ga at a rim check line position of an outer side rubber portion more to the outer side than a carcass layer and a maximum thickness Gb thereof is 0.8×Gb?Ga?1.0×Gb.
    Type: Grant
    Filed: September 3, 2013
    Date of Patent: February 6, 2018
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Kenji Horiuchi
  • Patent number: 9873238
    Abstract: Disclosed is an inner liner for a pneumatic tire, the inner liner including no less than 8 resin-layers, the resin-layer having a layer A constituted with a resin composition containing a gas barrier resin, and a layer B constituted with a resin composition containing an elastomer, at least one of the resin compositions included in the layer A and the layer B that are adjacent with each other containing a metal salt, the content of the metal salt being no less than 1 ppm and no greater than 10,000 ppm in terms of metal element equivalent, and an interlayer adhesive force between the layer A and the layer B being no less than 500 g/15 mm. The layer A and the layer B are preferably alternately laminated.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: January 23, 2018
    Assignees: KURARAY CO., LTD., Bridgestone Corporation
    Inventors: Shinji Tai, Hiroshi Kawai, Satoshi Yamakoshi, Kouta Isoyama, Masao Hikasa, Yuwa Takahashi, Hideki Kitano, Tetsuo Amamoto, Takatsugu Tanaka
  • Patent number: 9868267
    Abstract: To provide a multilayer structure having high gas barrier property and crack resistance as well as excellent fatigue resistance, an inner liner for a pneumatic tire using such a multilayer structure, and a pneumatic tire comprising the inner liner. According to the present invention, in a multilayer structure 1 including a barrier layer 2 and an elastomer layer 3, a proportion of a thickness of the elastomer layer 3 in the multilayer structure ((U1+U2+ . . . +Un)/T) is 60% or more.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: January 16, 2018
    Assignees: BRIDGESTONE CORPORATION, Kuraray Co., Ltd.
    Inventors: Hideki Kitano, Tetsuo Amamoto, Takatsugu Tanaka, Nahoto Hayashi, Masao Hikasa, Yusuke Tanaka
  • Patent number: 9855798
    Abstract: The inner liner is composed of a polymer layer stack including a first layer containing an SIBS and a second layer containing at least one of an SIS and an SIB. At least one of the first layer and the second layer is a polymer composition containing one of a C4 polymer obtained by polymerizing a monomer unit having 4 carbon atoms, a layered clay mineral with an organic compound intercalated therein and at least one kind of rubber component selected from the group consisting of a natural rubber, an isoprene rubber and a butyl rubber. The second layer is arranged to come into contact with a rubber layer of the carcass ply. The inner liner has a thickness Ge at a shoulder position Pe exceeding 100% and being less than or equal to 500% of a thickness Gc at a crown central position Pc.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: January 2, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Mutsuki Sugimoto, Tsuyoshi Tsuchida, Tomomi Masui, Reika Otake
  • Patent number: 9849735
    Abstract: A run flat tire having improved run flat durability is provided. The run flat tire has a side wall part reinforced by a side reinforcing rubber part, and the side reinforcing rubber part is formed by a rubber composition which comprises 100 parts by mass of a diene rubber containing natural rubber and polybutadiene rubber, and from 0.1 to 4.0 parts by mass of a mercaptobenzimidazole compound.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: December 26, 2017
    Assignee: TOYO TIRE & RUBBER CO., LTD.
    Inventor: Akie Hiraiwa
  • Patent number: 9815330
    Abstract: The laminate according to the present invention includes a thermoplastic resin film-containing layer and a rubber layer, in which the rubber layer contains a modified diene polymer, and the rubber layer has a dynamic storage modulus E? at ?20° C. of 1.0×105 to 1.0×108 Pa. This laminate can improve the resistance to the fractures and the cracks of the inner liner.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: November 14, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Takuya Ogasawara, Hideyuki Chiashi, Hideki Kitano
  • Patent number: 9757992
    Abstract: This invention relates generally to tires having multiple carcasses that wrap around multiple bead cores on a single side of the tire, and, more specifically, to a tire that has a bead core locking insert that eliminates a pullout step for one of the carcass plies or bands during fabrication, This step includes wrapping one of the plies or bands completely around said multiple bead cores that are found on a single side of the tire. In certain embodiments, the tire is an aviation tire that has bands of multiple plies that are wrapped about multiple bead cores found on each side of the tire. The bead core locking insert is found below the multiple bead cores found on each side of the tire and is adjacent to the bands that wrap around the inside and outside head cores, thereby locking these beads and associated bands together.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: September 12, 2017
    Assignees: Compagnie Generale Des Etablissements Michelin, Michelin Recherche et Technique S.A.
    Inventors: Robert A. DeVincentis, Michael K. Landis
  • Patent number: 9708429
    Abstract: Methods of making polymers by polymerizing conjugated diolefin in a hydrocarbon solvent in the presence of an initiator are described. Trialkyl or triaryl siloxy iminosilane functionalizing agents are reacted with the polymer, followed by desolvatizing the polymer. The resulting polymer not only has good filler interaction and processability, but results in a polymer with stable Mooney viscosity. A polymer made by the process of the present invention, including silica, and carbon black fillers, and rubber compositions, and tires containing side walls and treads containing the polymers are also described.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: July 18, 2017
    Assignee: Firestone Polymers, LLC
    Inventor: James H. Pawlow
  • Patent number: 9676236
    Abstract: A pneumatic tire according to the invention includes: a pair of left and right beads 3 each including a bead cores 3a and bead fillers 3b; a carcass ply 5 extended around the bead cores 3a; and an inner liner 4 arranged on an inner peripheral side of the carcass ply 5, and is characterized in that the carcass ply 5 is wound up around the bead cores 3a from the outside in the direction of width of tire to the inside in the direction of width of tire, and a distortion restraining layer 7 configured to restrain distortion of the winding ends 5a of the carcass ply 5 is provided between the bead fillers 3b and the carcass ply 5 so as to overlap with a wind-up ends 5a of the carcass ply 5.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: June 13, 2017
    Assignee: TOYO TIRE & RUBBER CO., LTD.
    Inventor: Yu Tomitaka
  • Patent number: 9539859
    Abstract: In a pneumatic tire containing as an inner liner material a laminate of a film of a thermoplastic resin or a thermoplastic elastomer composition and a layer of a rubber composition for improving the adhesive strength between the film and the rubber composition, the rubber composition comprises 100 parts by weight of a rubber component, 0.5 to 20 parts by weight of a condensate between a compound expressed by formula (1): wherein R1, R2, R3, R4 and R5 are hydrogen, a hydroxyl group or a C1 to C8 alkyl group, and formaldehyde, 0.25 to 200 parts by weight of a methylene donor, and a vulcanizing agent; and a weight ratio of the methylene donor content to the condensate content is 0.5 to 10.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: January 10, 2017
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Hirokazu Shibata
  • Patent number: 9540504
    Abstract: Provided is a thermoplastic resin composition in which a modified rubber excellent in low temperature resistance is dispersedly added in a polyamide resin matrix to improve the low temperature resistance (cyclic fatigue resistance) of the polyamide resin, the composition maintaining its fluidity even at a high content of modified rubber, thus allowing film formation, and exhibiting excellent low temperature resistance. The thermoplastic resin composition includes a polyamide resin (A) and a modified rubber (B) having an acid anhydride group or an epoxy group and is characterized in that the modified rubber (B) having an acid anhydride group or an epoxy group is modified with a hydrogen bonding compound (C) having a functional group reacting with an acid anhydride group or an epoxy group and a functional group capable of hydrogen bonding with an amide bond or a hydroxyl group.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: January 10, 2017
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventor: Naoyuki Morooka
  • Patent number: 9505917
    Abstract: A tire, the inner liner of which comprises a rubber composition based on at least predominantly a highly unsaturated diene elastomer, a reinforcing organic filler, graphite, chalk, a plasticizing hydrocarbon resin, the glass transition temperature, Tg, of which is greater than 20° C. and the softening point of which is less than 170° C. The use of such a composition in the inner liner of the tire, including graphite and a non-reinforcing filler of chalk type, makes it possible to notably improve the airtightness properties with respect to a control composition which comprises only graphite and which already performs very well in this aspect, but also with respect to a control composition conventionally used in the inner liners of tires, while maintaining a good level of the stiffness and processability properties as the conventional control compositions.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: November 29, 2016
    Assignees: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, MICHELIN RECHERCHE ET TECHNIQUE S.A.
    Inventors: Isabelle Riou, Aline Riou, Jean-Luc Cabioch
  • Patent number: 9403959
    Abstract: Provided are an antiozonant for polymers capable of providing excellent ozone resistance, and an ozone resistant rubber composition and an ozone resistant tire formed using the antiozonant. The present invention relates to an antiozonant for polymers, including alumina.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: August 2, 2016
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Masatoshi Kobayashi
  • Patent number: 9393838
    Abstract: Provided are a pressure-sensitive adhesive composition comprising, as a rubber component, at least two modified rubbers modified with a polar functional group and having different modification rates with each other, a laminate body comprising (A) a resin film layer and (B) a rubber elastic body layer wherein they are adhered via (C) the said pressure-sensitive adhesive composition, and a pneumatic tire having the said laminate body as an inner liner layer; and thus, provided are the pressure-sensitive adhesive composition that can firmly bond between the resin film layer and the rubber elastic body layer while the laminate body obtained therefrom does not generate cracks at low temperature, the laminate body using the said pressure-sensitive adhesive composition, and the pneumatic tire.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: July 19, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Takuya Ogasawara, Ryuji Nakagawa, Kotaro Hayakawa, Hideyuki Chiashi
  • Patent number: 9328213
    Abstract: A rubber composition excellent in air permeation resistance and improved in flexure failure resistance, and a weight-saving pneumatic tire excellent in air permeation resistance and improved in flexure failure resistance in which the rubber composition is used as the inner liner therein is provided. The rubber composition contains, relative to 100 parts by mass of the rubber ingredient (A) therein, from 1 to 9 parts by mass of carbon black (B) and from 80 to 150 parts by mass of a layered or platy clay mineral (C).
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: May 3, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Motoaki Kanou, Kumiko Konno
  • Patent number: 9259969
    Abstract: A pneumatic tire including an inner liner made of a polymer sheet is made of a polymer composition. The polymer composition includes a polymer component of a styrene-isobutylene-styrene triblock copolymer by 5 mass % to 40 mass %, and a rubber component of at least one kind selected from the group consisting of natural rubber, isoprene rubber, and isobutylene-isoprene rubber by 20 mass % to 95 mass %, and sulfur by 0.1 mass parts to 5 mass parts with respect to the polymer component by 100 mass parts. The polymer sheet has a thickness of 1.6 mm to 4.0 mm. A tread is made of a rubber composition including carbon black by 60 mass parts to 200 mass parts with respect to 100 mass parts of a rubber component including styrene-butadiene rubber by greater than or equal to 50 mass %.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: February 16, 2016
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Takeo Nakazono, Mutsuki Sugimoto
  • Patent number: 9254715
    Abstract: Inner liner rubber composition for a pneumatic tire, which enables improvements in handling stability, fuel economy, elongation at break, sheet processability, air barrier properties, and compounding cost in a balanced manner. Also, pneumatic tire including inner liner formed from the rubber composition. The rubber composition includes: reclaimed butyl rubber; halogenated butyl rubber other than the reclaimed butyl rubber; at least one semi-reinforcing filler selected from finely ground bituminous coal having a specified average particle size, talc, mica, and hard clay; and carbon black having a specific N2SA and/or silica having a specific N2SA. The rubber composition has a predetermined reclaimed butyl rubber content, a predetermined combined content of the reclaimed butyl rubber and the halogenated butyl rubber, a predetermined total semi-reinforcing filler content, and a predetermined combined content of the carbon black and the silica.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: February 9, 2016
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Tatsuya Miyazaki
  • Patent number: 9217944
    Abstract: A carbon black having an I2 number from 30 mg/g to 200 mg/g and a DBP from 20 cc/100 g to 40 cc/100 g.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: December 22, 2015
    Assignee: Cabot Corporation
    Inventors: James A. Belmont, Geoffrey Moeser, Andriy Korchev, Agathagelos Kyrlidis, Jeremy Huffman
  • Patent number: 9149996
    Abstract: The present invention relates to a ribbon-shaped strip used for an inner liner and a method for manufacturing the strip. The strip is to be wound on an outer circumferential surface of a tire molding drum or a core body to form an inner liner. The strip has an inner layer disposed inwardly in a tire and an outer layer disposed outwardly in the tire. The inner layer and the outer layer are bonded to each other with their ends offset by 0.5 mm to 30 mm in a widthwise direction. At least one layer of the inner layer is formed of an elastomer composition containing a styrene-isobutylene-styrene block copolymer. At least one layer of the outer layer is formed of a thermoplastic elastomer composition.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: October 6, 2015
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Mutsuki Sugimoto
  • Patent number: 9067464
    Abstract: It is an object to ensure the strength of a carcass line, enhance durability with respect to high applied loads, and be able to suppress the input of compressive force with respect to a carcass ply without increasing mass and cost. When W denotes a distance from a tire equatorial plane (CL) to a tire axial direction outermost point (P) of a carcass body portion (22C) and D denotes a tire radial direction height from bead base portions (30) to a carcass body portion (22A) at the tire equatorial plane (CL), a radius of curvature (R1) of a carcass ply (12) in a range from the tire equatorial plane (CL) to a position (P1) located 0.6 W away from the tire equatorial plane (CL) in the tire axial direction, a radius of curvature (R2) of a carcass body portion (22B) in a range from the position (P1) to a position (P2) located 0.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: June 30, 2015
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Masataka Uchiyama
  • Publication number: 20150122384
    Abstract: The present invention provides a tire with a synthetic fiber interior layer that adds flexibility and resistance to punctures from sharp objects. The present invention includes a rubber layer having an interior and exterior surface forming a substantially U-shaped tire cross section. Embedded between the interior and exterior surface of the rubber layer are radial plies extending across the tread, shoulders and sidewalls of the exterior surface. Sidewalls further include inner ends, wherein each radial ply folds back onto itself to form an enclosed bead chaffer region. An interior layer is coextensively and interiorly disposed along the radial ply. The interior layer is disposed within the tire cross section around the beads, and exits the tire cross section through the interior surface of the rubber layer and into the open interior of the tire. The interior layer is separable and freely positioned against the interior surface of the rubber layer.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 7, 2015
    Inventor: Cecil Dilworth
  • Patent number: 9022086
    Abstract: A pneumatic tire that is provided with a first fastener of a separatable pair of mechanical fasteners on a tire inner surface, wherein, even in cases where a desired object is engaged/fixed using only one fastener, the object does not rotate having the fastener as a central axis when the tire is in use. A first fastener of the pair of mechanical fasteners is provided on a tire inner surface, and the mechanical fasteners are provided with a rotation preventing mechanism for preventing the fasteners from mutually rotating when the pair of mechanical fasteners are engaged.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: May 5, 2015
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Atsushi Tanno, Daisuke Kanenari