Patents Examined by Adrienne C. Johnstone
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Patent number: 9090129Abstract: In a pneumatic run flat tire in which an inner side reinforcing rubber layer having a falcated cross-section is disposed in a side wall portion, dynamic elastic moduli E?10A, E?10B, and E?10C and values T10A, T10B, and T10C of a tan ? at 60° C. of rubber compositions of each region of the inner side reinforcing rubber layer are configured so as to satisfy the relationships E?10A<E?10B<E?10C, E?10A?4.0 MPa, T10A<T10B<T10C, and T10A?0.06. Dynamic elastic moduli E?20A, E?20B, and E?20C at 60° C. of rubber compositions of each region of the outer side rubber layer are configured so as to satisfy the relationships E?20B<E?20A?E?20C and E?20C/E?20B?1.6. Furthermore, the dynamic elastic modulus ratios E?20A/E?10A and E?20C/E?10C are configured so as to satisfy the relationships 0.6?E?20A/E?10A?1.0 and 0.6?E?20C/E?10C?1.0.Type: GrantFiled: September 7, 2012Date of Patent: July 28, 2015Assignee: The Yokohama Rubber Co., LTD.Inventor: Kenji Horiuchi
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Patent number: 9056528Abstract: In a carcass (13), between first sections (13A) in which an inter-cord distance between a body portion and turn-back portions gradually decreases outward in a tire radial direction and second sections (13B) in which the inter-cord distance gradually increases, there are disposed first distance-invariant sections (13C) in which the turn-back portions (14B) are brought closer to the body portion (14A) that becomes a substantial bending neutral axis and in which the inter-cord distance is constant, so compressive force acting on the cords of the turn-back portions (14B) can be reduced. By disposing the first distance-invariant sections (13C) between the first sections (13A) and the second sections (13B), the direction of the cords of the turn-back portions (14B) is not suddenly changed, so it becomes difficult for stress to concentrate in the rubber between the cords of the turn-back portions (14B).Type: GrantFiled: March 7, 2012Date of Patent: June 16, 2015Assignee: BRIDGESTONE CORPORATIONInventor: Arata Mori
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Patent number: 9004121Abstract: 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: GrantFiled: November 8, 2010Date of Patent: April 14, 2015Assignee: The Goodyear Tire & Rubber CompanyInventors: Anthony John Scarpitti, Gary Robert Burg
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Patent number: 8999093Abstract: On a tire inner surface “is” facing a tire cavity “i” surrounded by a rim 2 and a pneumatic tire 3, the tire is provided with a noise damper 4 made of a spongy material and extending in the circumferential direction of the tire. Noise dampers 4 having the same cross sectional shape are used in a size group of tires which include a minimum volume tire that the cross sectional area S of the tire cavity on the meridian cross section has a minimum value Smin and a maximum volume tire that the cavity cross section area S has a maximum value Smax, and which have sizes such that the cavity sectional area ratio Smax/Smin falls within the range of 1.00 to 1.95.Type: GrantFiled: September 22, 2011Date of Patent: April 7, 2015Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Naoki Yukawa
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Patent number: 8997812Abstract: The present invention relates to a pneumatic tire having an inner liner formed from a rubber composition that includes a butyl rubber in which the Mooney viscosity measured at 130° C. of an unvulcanized rubber of the rubber composition is at least 45, wherein the average value and standard deviation of the butyl rubber gauge of shoulder portion of a finished tire satisfy: (Standard deviation of butyl rubber gauge)/(Average value of butyl rubber gauge)?0.060. The rubber gauge of the tire exhibits improved uniformity and is superior in air permeability resistance.Type: GrantFiled: August 20, 2008Date of Patent: April 7, 2015Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Takafumi Taguchi
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Patent number: 8978726Abstract: Flat-running device for fitting to a tubeless mounted assembly for a motor vehicle and a mounted assembly incorporating same is provided. The device is configured for a wheel rim (in several parts includes an annular supporting structure of the casing designed to be mounted around the rim and divided into sectors in an arc of a circle that are articulated together by connection members, and members for locking the beads against these edges which are designed to connect the annular supporting structure to these beads. The connection members including two spindles extending in the axial direction and respectively attached in two adjacent sectors and connected together by an articulation extending in the circumferential direction of the device, the articulation having a rigid lug with two through-holes or else a flexible link with two loops, the or the link being articulated on these spindles by these two holes or loops, respectively.Type: GrantFiled: November 3, 2010Date of Patent: March 17, 2015Assignee: HutchinsonInventors: Arnaud Detout, Florence Ratet, Olivier Marsaly
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Patent number: 8978724Abstract: Provided is a pneumatic tire/rim assembly which is improved in the run-flat durability with the mass of the tire being reduced. In a pneumatic tire/rim assembly with a run-flat capability, an air bladder (2) made of a circular ring-shaped film body is inserted inside a pneumatic tire (1) mounted on a rim (R). At least part of the film body is formed of a sealing layer (3) made of a thermoplastic resin or a thermoplastic elastomer composition obtained by blending an elastomer in a thermoplastic resin.Type: GrantFiled: April 24, 2009Date of Patent: March 17, 2015Assignee: The Yokohama Rubber Co., Ltd.Inventor: Hideki Hamanaka
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Patent number: 8973635Abstract: A pneumatic tire comprising a belt structure and a torus shaped carcass having a first inner radius and an outer radius, wherein the carcass is comprised of three or more layers of ply, wherein each layer of ply is formed from a rubberized strip of one or more cords, the strips being wound in an geodesic pattern having the cord extend across the carcass from a first shoulder to a second shoulder in a path that has at least one point tangent to the first inner radius located in the bead area of the tire.Type: GrantFiled: November 29, 2010Date of Patent: March 10, 2015Assignee: The Goodyear Tire & Rubber CompanyInventors: Robert Allen Losey, Samuel Patrick Landers, Thulasiram Gobinath
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Patent number: 8973629Abstract: An improved tire provides an air-flow restrictor that may be installed inside a tire. The air-flow restrictor may restrict or prevent the flow of air in the direction opposite to the direction of rotation of the tire. Also, a method for saving fuel by inserting or retrofitting tires with air movement restricting inserts.Type: GrantFiled: October 30, 2007Date of Patent: March 10, 2015Inventor: Garry L. Rumbaugh
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Pneumatic tire with inner liner layer having multiplicity of integrally molded interlocking elements
Patent number: 8960251Abstract: A pneumatic tire designed so that when a hook and loop fastener is fitted to the tire internal face of a pneumatic tire furnished with an inner liner layer consisting of a thermoplastic elastomer composition of a blend of thermoplastic resin and elastomer, or a thermoplastic resin, the hook and loop fastener can easily follow the elongation of the inner liner layer and is free from damaging of the inner liner layer. There is disclosed a pneumatic tire furnished on its internal face with an inner liner layer (7) consisting of a thermoplastic elastomer composition composed of thermoplastic resin and elastomer, or a thermoplastic resin, characterized in that integral forming of a multiplicity of interlocking elements (8) protruding on the hollow side of the tire is effected on the surface of the inner layer (7).Type: GrantFiled: March 3, 2008Date of Patent: February 24, 2015Assignee: The Yokohama Rubber Co., Ltd.Inventors: Atsushi Tanno, Yuji Sato -
Patent number: 8955569Abstract: 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: GrantFiled: January 14, 2009Date of Patent: February 17, 2015Assignees: Michelin Recherche et Technique S.A., Compagnie Generale des Etablissements MichelinInventors: François Chambriard, Jean Luc Dendievel
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Patent number: 8950456Abstract: 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: GrantFiled: October 25, 2010Date of Patent: February 10, 2015Assignees: Compagnie Generale des Etablissements, Michelin Recherche et Techique S.A.Inventors: Christophe Laurent, David Dean, David Lavialle
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Patent number: 8939185Abstract: 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: GrantFiled: September 16, 2010Date of Patent: January 27, 2015Assignee: Bridgestone CorporationInventor: Toshiharu Ito
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Patent number: 8925605Abstract: Provided is a run-flat tire in which a side-reinforcing rubber is arranged on the inside of the carcass in the tire width direction on both sidewall portions. The carcass plies include cords made of a material having a heat shrinkage rate of 2% to 8% at 177° C., and the run-flat tire further includes a reinforcing cord layer which includes cords made of a material having a heat shrinkage rate of less than 2% at 177° C., the reinforcing cord layer being arranged on the outside of the side-reinforcing rubber in the tire width direction on both sidewall portions.Type: GrantFiled: August 25, 2010Date of Patent: January 6, 2015Assignee: Bridgestone CorporationInventor: Daisuke Maehara
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Patent number: 8915276Abstract: On a tire inner surface “is” facing a tire cavity “i” surrounded by a rim 2 and a pneumatic tire 3, the tire is provided with a noise damper 4 made of a spongy material and extending in the circumferential direction of the tire. Noise dampers 4 having the same cross sectional shape are used in a size group of tires which include a minimum volume tire that the cross sectional area S of the tire cavity on the meridian cross section has a minimum value Smin and a maximum volume tire that the cavity cross section area S has a maximum value Smax, and which have sizes such that the cavity sectional area ratio Smax/Smin falls within the range of 1.00 to 1.95.Type: GrantFiled: May 1, 2007Date of Patent: December 23, 2014Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Naoki Yukawa
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Patent number: 8905102Abstract: 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: GrantFiled: April 24, 2012Date of Patent: December 9, 2014Assignee: Toyo Tire & Rubber Co., Ltd.Inventor: Taiichi Nishio
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Patent number: 8905099Abstract: Provided is a low noise pneumatic tire in which the noise absorbing member on the inner peripheral surface of the tire is made less likely to be damaged when the pneumatic tire is removed from the rim. The pneumatic tire includes a noise absorbing member of a porous material which is attached to an inner peripheral surface of the tire. In the pneumatic tire, a lubricant is applied to the inner peripheral surface of the noise absorbing member. Alternatively, both end portions, in a tire width direction, of the inner peripheral surface of the noise absorbing member are covered with protective layers harder than the noise absorbing member.Type: GrantFiled: September 25, 2013Date of Patent: December 9, 2014Assignee: The Yokohama Rubber Co., Ltd.Inventor: Atsushi Tanno
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Patent number: 8869852Abstract: A run flat tire with reinforced sides, wherein inner and outer rubber thickness ratios centered on a carcass layer in a side wall portion are stipulated and a side filler extending in the tire radial direction is embedded on the outer wall surface side of the side wall portion. In this run flat tire, the modulus of the side filler/modulus of a side reinforcing layer, the modulus of a rim cushion/a modulus of the side filler, the cross-sectional area of a bead filler/cross-sectional area of the side filler, the cross-sectional area of the side filler/cross-sectional area of the side reinforcing layer, the rubber hardness of the side reinforcing layer, and the material of belt cover layers are each stipulated.Type: GrantFiled: February 7, 2012Date of Patent: October 28, 2014Assignee: The Yokohama Rubber Co., Ltd.Inventor: Kenji Horiuchi
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Patent number: 8869855Abstract: In order to improve ride quality and steering stability, the present invention provides a pneumatic tire having a sidewall made of a rubber composition for a sidewall comprising at least a natural rubber and a diene rubber comprising a syndiotactic 1,2-polybutadiene, wherein rubber sheets obtained by extruding at a thickness of at most 1.5 mm the rubber composition for a sidewall with a complex modulus E*a in a tire circumferential direction measured at a temperature of 70° C. and a dynamic distortion of 2% of 3 to 15 MPa are laminated.Type: GrantFiled: December 18, 2008Date of Patent: October 28, 2014Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Takuya Horiguchi
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Patent number: 8863800Abstract: A pneumatic tire includes a carcass having a first portion in which a distance between ply cords of a carcass body section and a carcass folded section gradually decreases from a position of a bead core toward outside in a radial direction of the tire, a second portion in which the distance between the ply cords gradually increases from the first portion toward outside in the radial direction of the tire, and a third portion in which the distance between the ply cords gradually decreases from the second portion toward outside in the radial direction of the tire. A notched portion is provided on a widthwise outer skin rubber of the carcass folded section of the second portion by notching the widthwise outer skin rubber inwardly in the width direction of the tire.Type: GrantFiled: August 4, 2011Date of Patent: October 21, 2014Assignee: Bridgestone CorporationInventor: Akira Sasaki