Tire Characterized By The Dimension Or Profile Of The Cross Sectional Shape Patents (Class 152/454)
  • Patent number: 11077715
    Abstract: A heavy-duty tire includes a tread portion including a pair of tread edges and a tire equator located therebetween. In a tire cross-section including a tire axis under a 5% inner pressure condition where the tire is mounted on a standard wheel rim with 5% of a standard pressure but loaded with no tire load, the tread portion has a profile which includes a first profile including the tire equator, a pair of second profiles extending axially inwardly from the tread edges and a pair of third profiles connecting the first profile and the respective second profiles. The first profile and the second profiles are configured as arc shapes protruding outwardly in a tire radial direction, and the third profiles are configured as straight shapes.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: August 3, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Hana Sato
  • Patent number: 11077714
    Abstract: A tire includes a tread portion provided with a tread profile which is curved in an arcuate shape in a tire meridian section so that the tread portion includes a crown region contacting with the ground during straight running, and a pair of shoulder regions contacting with the ground during cornering by leaning the tire at a certain camber angle. The crown region has a land ratio of not less than 98%, and the shoulder regions have a land ratio of from 85% to 93%. A three-wheeled vehicle has a pair of front wheels and a single rear wheel on which the tire is mounted.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: August 3, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Toshiyuki Matsunami, Yumiko Yoshida, Satoshi Matsunaga
  • Patent number: 11040581
    Abstract: In a tire 2, chafers 8 each extend from a position axially outward of a corresponding one of beads 10 to a position radially inward of the corresponding one of the beads 10. Sidewalls 6 extend to positions between the beads 10 and the chafers 8, respectively. The chafers 8 extend to positions outward of ends 38 of turned-up portions 44 of a carcass ply 40 in the radial direction. When a side surface 50 represents a portion, of an outer surface of each chafer 8, which contacts with a flange of a rim, an outline of the side surface 50 has an arc C that extends from a heel of the bead 10 portion and projects inward.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: June 22, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Kenichiro Tanada
  • Patent number: 10953703
    Abstract: A motorcycle tire comprises bead portions each having an axially outer surface provided with a profile which comprises a radially inner portion and a radially outer portion. The radially inner portion is located axially outward of a bead core and extending substantially linearly in the tire radial direction. The radially outer portion is smoothly continued from the radially inner portion and extends radially outwardly to a sidewall portion, while inclining toward the axially outside. When an axial width between the bead portions is adjusted to coincide with a rim width between rim flanges, and an axial center of the axial width coincides with an axial center of the rim width, and further the tire rotational axis coincides with the rotational axis of the wheel rim, then at least a part of the radially outer portion of the profile protrudes axially outwardly from a profile of the inner surface of the rim flange.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: March 23, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yohei Maeda
  • Patent number: 10946700
    Abstract: A heavy duty pneumatic tire includes a tread, a pair of side walls, and a belt. The tread includes a base layer and a cap layer on the base layer such that boundary between the base layer and the cap layer is exposed on the side surfaces of the tread and the boundary on the side surfaces is on radial direction inner side of the edges of the side walls, and the tread is formed such that when an imaginary line passing through edge of the belt and extending in axial direction is set and a portion of the imaginary line intersecting the tread is a line segment AL, a ratio of width of the base layer in width of the tread is 70% or more where the width of the tread is length of the segment AL, and the base layer has a loss tangent of 0.06 or less.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: March 16, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Daisuke Todoroki
  • Patent number: 10946702
    Abstract: A rim guard of a tire has a top, an inner surface, and an outer surface. A contour of the inner surface is represented by a circular arc, and the circular arc has a radius of not less than 20 mm and not greater than 30 mm. A contour of the outer surface is represented by a circular arc, and the circular arc has a radius of not less than 100 mm and not greater than 500 mm. In a radial direction, a position of an outer edge of the outer surface coincides with a cross-sectional width specified position, or the outer edge of the outer surface is located outward of the cross-sectional width specified position.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: March 16, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Ryuhei Sanae, Yoshiaki Kanematsu, Shintaro Tomita, Daisuke Kudo
  • Patent number: 10946699
    Abstract: In a tire 2 for a two-wheeled automotive vehicle, a carcass ply 24 is extended on and between one bead 8 and the other bead 8 along inner sides of a tread 4 and sidewalls 6, and includes a main portion 24a and turn-up portions 24b, which are formed by the carcass ply 24 being turned up around the beads 8 from an inner side toward an outer side in an axial direction. An outer end Pp of each turn-up portion 24b is positioned outward of a tread end Pe in a radial direction. A band 14 is positioned between a belt 12 and the tread 4, such that the band 14 covers the belt 12. An outer end P1 of an inner layer 28 layered over a carcass 10 and the outer end Pp of the turn-up portion 24b are positioned facing each other.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: March 16, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Tomoki Kato
  • Patent number: 10946701
    Abstract: A heavy-duty tire includes a tire sidewall (K) provided on a surface (Ks) thereof with a belt-like shaped serration extending in a tire circumferential direction. The serration is formed of a plurality of radially extending ridges arranged adjacently in the tire circumferential direction.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: March 16, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Shuji Kagimoto
  • Patent number: 10940720
    Abstract: A tire 1 for motorcycles comprises a carcass 6, a belt layer 7, and a tread rubber 2G. The belt layer 7 includes at least one reinforcing cord coated with rubber and spirally wound. In a meridian section passing through a tire rotational axis of the tire 1 in a standard state, a width BW of the belt layer 7 in a tire axial direction is in a range of from 60% to 80% of a tread width TW. The tread rubber 2G has a thickness at a tire equator (C) in a range of from 70% to 90% of thickness at tread edges (2t).
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: March 9, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Kazuya Shirakami
  • Patent number: 10933695
    Abstract: A tire includes a carcass ply, two beads, two sidewalls, and a crown reinforcing zone. The carcass ply connects the two beads by way of the two sidewalls. The crown reinforcing zone is positioned radially external to the carcass ply. The crown reinforcing zone includes a plurality of reinforcing strips disposed in at least two layers. The reinforcing strips are coated in an elastomeric composition. A mean overlap between the reinforcing strips of the two layers is greater than 40%. The reinforcing strips are made of a thermoplastic film having a modulus greater than 0.9 GPa, and preferably greater than 2 GPa, in a main direction and in a transverse direction.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: March 2, 2021
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Augustin Bosquet, Jacky Pineau, Thomas Guy, Christophe Le Clerc, Anne-Lise Thuilliez
  • Patent number: 10926584
    Abstract: A pneumatic tire includes, in a tread portion, a belt layer including a circumferential belt layer with a belt cord disposed along a circumferential direction; and belt plies having a larger lateral direction dimension than a lateral direction dimension of the circumferential belt layer. A gauge from a surface of the tread portion to the belt layer is equal on a vehicle outer side and a vehicle inner side where the circumferential belt layer is disposed. At positions located away from a tire equatorial plane toward the vehicle outer side and the vehicle inner side by 120% of half of the lateral direction dimension of the circumferential belt layer, a gauge H1out on the vehicle outer side and a gauge H1in on the vehicle inner side to a belt ply of the belt plies located outermost in a radial direction satisfy 1 mm?H1in?H1out?3 mm.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: February 23, 2021
    Inventor: Takayuki Suzuki
  • Patent number: 10894444
    Abstract: In a tire 2, a band 14 has a helically wound structure in which a strip 26 having a cord 28 is wound in a circumferential direction. The band 14 includes a center portion C disposed at a center in an axial direction, and a shoulder portion S disposed outward of the center portion C in the axial direction. A pitch Pc of the strip 26 in the center portion C is not less than 2.0 times a width W of the strip 26 and not greater than 2.5 times the width W. A pitch Ps of the strip 26 in the shoulder portion S is not less than 0.8 times the width W of the strip 26 and not greater than 1.2 times the width W.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: January 19, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES LTD.
    Inventor: Yu Mukai
  • Patent number: 10882364
    Abstract: A tire having a central axis and a radius further includes a circumferential tread having a convex cross-section. The convex cross-section is defined by a radius that is less than a maximum radius of the tire. A pair of sidewalls extends from opposite sides of the circumferential tread. Each of the pair of sidewalls has a concave cross-section that is defined by a radius that is greater than a maximum radius of the convex cross-section of the circumferential tread.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: January 5, 2021
    Assignee: Bridgestone Americas Tire Operations, LLC
    Inventors: Sharon E. Reinhardt, William H. Durivage
  • Patent number: 10780747
    Abstract: Provided is a tire structure capable of being combined with a rim, and the tire structure includes an air tube, a core provided on the air tube, and a tire outer layer provided on the core, and the core includes a body part positioned above a transverse diameter of the air tube and a wing part positioned under the transverse diameter of the air tube, and a lower end of the wing part is placed under an upper surface of the rim.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: September 22, 2020
    Inventor: Young Gi Lee
  • Patent number: 10538131
    Abstract: When a tire that is mounted on a specified rim, inflated to an internal pressure of 50 kPa, and placed in a no-load state is viewed as a cross-section from the tire meridian direction, a position of 1.30×Hf on an outer surface of a sidewall portion, taking a rim flange height (Hf) of the specified rim as a reference, is defined as a point (P), a foot of a normal line (L) drawn from the point (P) to a carcass line of a main body portion (131) of a carcass layer (13) is defined as a point (M), and a point of intersection of the normal line (L) and a carcass line of a folded back portion (132) of the carcass layer (13) is defined as a point (T). At this time, a distance (a) mm from the point (M) to the point (T), a distance (b) mm from the point (T) to the point (P), and a specified load (x) kN have relationships such that a=0.019×x+13.3 and b=0.052×x+21.6, with a tolerance of not less than 0% and not more than 20%.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: January 21, 2020
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Lisa Tauchi, Satoru Isobe
  • Patent number: 10518586
    Abstract: A pneumatic tire includes a carcass, a tread portion and a belt layer having a first inclined belt ply, circumferential direction belt ply, and second inclined belt ply. Ground contact edge side belt plies extend from tire width direction end portions of the second inclined belt ply toward tire width direction outsides, at a tire radial direction outside of the carcass. With respect to a tire circumferential direction, an angle of cords of the first inclined belt ply is from 45° to 60°, an angle of a cord of the circumferential direction belt ply is 5° or less, an angle of cords of the second inclined belt ply is from 30° to 60°, and an angle of cords of the ground contact edge side belt plies exceeds 5° and is 30° or less. A distance dimension of the ground contact edge side belt plies is 80% or more of a ground contact width.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: December 31, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Yosuke Mori
  • Patent number: 10500896
    Abstract: A wheel assembly comprising a wheel disk and a tread member disposed around the wheel disk. The wheel disk can have a substantially conical shape when in an unloaded state, but be flexible such that it can deform under load to optimize and/or maximize contact area between the tread member and a driving surface.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: December 10, 2019
    Inventor: Paul Catalano
  • Patent number: 10449803
    Abstract: Provided is a pneumatic tire where a total width (SW) and an outer diameter (OD) satisfy the relationship SW/OD?0.3; an inner diameter (ID) and an outer diameter (OD) satisfy the relationship ID/OD?0.7; as viewed in a tire meridional cross section, an area (X1) (mm2) of a first region (R1) and a periphery length (Y1) (mm) of an inner peripheral surface of the first region (R1) have a ratio X1/Y1 of 12 or greater and 30 or less; and an area X2 (mm2) of a second region (R2) and a periphery length (Y2) (mm) of an inner peripheral surface of the second region (R2) have a ratio X2/Y2 of 10 or greater and 15 or less.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: October 22, 2019
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Yuji Minami
  • Patent number: 10399385
    Abstract: Tire comprising a crown reinforcement formed of at least two working crown layers each being formed of reinforcing elements inserted between two skim layers of rubber compound, a first layer S of polymer compound being in contact with at least one working crown layer and in contact with the carcass reinforcement and the crown reinforcement comprising at least one layer of circumferential reinforcing elements. The elastic modulus under tension at 10% elongation of at least one skim layer of at least one working crown layer is greater than 9 MPa, the maximum value of tan(?), denoted tan(?)max, of the at least one skim layer of at least one working crown layer is less than 0.100 and the complex dynamic shear modulus G*, measured at 10% and 60° C. on the return cycle, of the first layer S of polymer compound is greater than 1.35 MPa.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: September 3, 2019
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventors: Hichem Rehab, Jean-François Parmentier
  • Patent number: 10399387
    Abstract: A tire comprises two working crown layers of reinforcing elements and, in each shoulder, an end of a layer of parallel reinforcing elements oriented circumferentially, said end being axially outside the working crown layers. The reinforcing elements have a diameter less than 1 mm and comprise threads with a diameter strictly greater than 0.16 mm, and, in a radial plane, the ratio between the thicknesses of rubber compound between the inner surface of the tire cavity and that point of a metal reinforcing element of the carcass reinforcement that is closest to said inner surface of the cavity, of the two parts of the tire profile that are centered on the respective orthogonal projections onto the inner surface of the tire cavity of the axially outer ends of said additional layers, and of the parts of the tire profile that have the smallest thicknesses, being greater than 1.15.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: September 3, 2019
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventor: Benoît Foucher
  • Patent number: 10363778
    Abstract: A crown reinforcement formed of at least two working crown layers of reinforcing elements. The tire additionally comprises, in each shoulder, at least one end of a layer of reinforcing elements that are mutually parallel in the layer and are oriented circumferentially, said end being axially outside said at least two working crown layers, the reinforcing elements of the carcass reinforcement having a diameter less than 0.85 mm, and said reinforcing elements of the carcass reinforcement being made up of threads with a diameter less than 0.16 mm.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: July 30, 2019
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventor: Benoît Foucher
  • Patent number: 10343459
    Abstract: [Object] A pneumatic tire that allows reduction of the occurrence of a TGC and, at the same time, allows reduction of rolling resistance, is provided. [Solution] The tire 12 includes a band 26 disposed radially inward of a tread 14, and a belt 24 disposed radially inward of the band 26. The band 26 includes a cord that is helically wound and extends substantially in a circumferential direction. The belt 24 includes an inner layer 24a, and an outer layer 24b that is layered over the inner layer 24a and disposed radially outward of the inner layer 24a. The inner layer 24a and the outer layer 24b each include multiple cords aligned with each other. The cords in the inner layer 24a and the cords in the outer layer 24b are inclined relative to an equator plane. A direction in which the cords in the inner layer 24a are inclined relative to the equator plane is opposite to a direction in which the cords in the outer layer 24b are inclined relative to the equator plane.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: July 9, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Kazuo Asano, Yasuhiro Kubota
  • Patent number: 10308082
    Abstract: It is a run-flat tire 1 provided with a carcass 6 extending from a tread portion 2 through a sidewall portion 3 to a bead core 5 in a bead portion 4, and a side-reinforcement rubber layer 10 disposed inside the carcass 6 in the sidewall portion 3 and having a substantially crescent-shaped cross-section. In a tire meridian cross section including the tire rotational axis under a normal state such that the tire is mounted on a normal rim, inflated to a normal internal pressure and loaded with no load, the tire inner-cavity surface 11 includes a side inner-cavity surface 12. A distance in the tire radial direction of the side inner-cavity surface 12 from a bead toe 4e of the bead portion 4 is in a range of 0.4 times to 0.9 times the length H in the tire radial direction of the tire inner-cavity surface 11.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: June 4, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Naoki Sugiyama
  • Patent number: 10266015
    Abstract: Provided is a pneumatic tire including a carcass constituted of at least one ply including a ply main body and ply turn-up portions, and a recessed portion formed to be recessed inward in the tire axial direction at an outer surface of the tire in a region between a rim separating point and the tire maximum width position in each sidewall portion. In a section taken along the tire axial direction in a non-rim assembled state, an angle ? is defined as an angle that an outer surface straight line defined by each bead back face portion passing the first intersection and the second intersection forms with respect to the tire axial direction, and the angle ? is in the range from 70 to 100°.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: April 23, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Kazuto Osaki
  • Patent number: 10252573
    Abstract: A tire, wherein, in a cross section in the tire width direction thereof in a state where the tire has substantially not been inflated with no load applied thereon, provided that the maximum height in the tire radial direction of the carcass is h, a radius of curvature of the carcass within a height range 0.91 h-h measured from the radially innermost position of the carcass is R7, an acute inclination angle specifically defined in the height range 0.91 h-h is ?7, the intermediate value of a radius of curvature in the height range 0.82 h-0.91 h is R6, a radius of curvature in the height range 0.63 h-0.82 h is R5, and an acute inclination angle specifically defined in the height range 0.63 h-0.82 h is ?5, R7?0.26h, ?7?14°, R6<R7, R5>R6, and ?5?23°.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: April 9, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Naoto Okazaki
  • Patent number: 10226969
    Abstract: A circumferential depressed portion extended along a tire circumferential direction is formed on an outer surface of a tire side portion of a pneumatic tire. On a tire cross-sectional plane, a rim-side outer surface formed in a range from a rim separation point to an inner-side end of the circumferential depressed portion along a tire radial direction is formed along a given circular-arc curved line. When a virtual circular-arc curved line drawn by extending the given circular-arc curved line is defined, a depth of the circumferential depressed portion with reference to the virtual circular-arc curved line is not smaller than 5 mm and not larger than 35 mm in a range of not smaller than 22% and not larger than 28% of a tire height from an bead end.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: March 12, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Jyunya Asari
  • Patent number: 10195900
    Abstract: A pneumatic tire includes a carcass extending between bead cores of bead portions through a tread portion. A tire section width Wt (unit: mm) in relation to a bead diameter Db (unit: inch) satisfies the following equations, Wt??0.7257×(Db)2+42.763×Db?339.67, and Wt??0.7257×(Db)2+48.568×Db?552.33. In a tread thickness distribution curve f(y) represented by equation f(y)=1?t(y)/t(0), when y=0.4, the value of f(y) is of from 0.03 to 0.06, and a rate of change of the value of f(y) increases to y=0.4 and decreases thereafter, where t(y) denotes a tread thickness at each tire axial position Py, and y represents a ratio of an axial distance from the tire equatorial plane, to the maximum-width L of the carcass.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: February 5, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Kazuo Asano, Yasuhiro Kubota
  • Patent number: 10166817
    Abstract: To reduce noise while suppressing increase in rolling resistance, without affecting the formation of a carcass line, provided is a pneumatic tire (10) including: a carcass (13); an inclined belt (14), and an inner liner (17). The inclined belt (14) is disposed on the tire radial outer side of the crown portion of the carcass (13). The inclined belt (14) includes at least one inclined belt layer (16). The inclined belt layer (16) has cords extending as being inclined at 35° or more with respect to the tire circumferential direction. The inner liner (17) has a thickness of 1.5 mm or more at least in part of a side portion (19).
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: January 1, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Isao Kuwayama, Shintaro Hatanaka, Kentaro Kozuki
  • Patent number: 10137738
    Abstract: A tire comprising a crown reinforcement formed of at least two working crown layers of reinforcing elements. The tire additionally comprises, in each shoulder, at least one end of a layer of reinforcing elements that are mutually parallel in the layer and are oriented circumferentially, said end being axially outside said at least two working crown layers, the reinforcing elements of the carcass reinforcement having a diameter less than 1 mm and being made up of threads with a diameter strictly greater than 0.16 mm, and said reinforcing elements of the carcass reinforcement being advantageously non-wrapped metal cords that return a flow rate of less than 20 cm3/min in what is referred to as the permeability test.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: November 27, 2018
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventor: Benoît Foucher
  • Patent number: 10086658
    Abstract: A run-flat tire ensures run-flat durability with a reduced weight. A tire radial outermost carcass ply of two or more carcass plies has tire widthwise inner ends in a crown portion. A bead filler and side reinforcing rubber have an overlapping part in the tire width direction. In a cross section of the run-flat tire in the tire width direction in a state where the run-flat tire is attached to an applicable rim, filled to a specified internal pressure, and placed under no load, a thickness d1 of a sidewall portion at a midpoint in the tire radial direction between a maximum width position of the run-flat tire and a tire radial outermost position of a bead core is greater than a thickness d2 of the sidewall portion at a midpoint in the tire radial direction between the maximum width position of the run-flat tire and a tread edge.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: October 2, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Young Chul Park
  • Patent number: 10076935
    Abstract: The invention relates to a tire having at least one carcass reinforcement (2) comprising reinforcers, surmounted radially on the outside by a crown reinforcement (3) comprising two axial ends S, itself radially on the inside of a tread (4), said crown reinforcement (3) being made up of at least one layer of reinforcement elements, said tread (4) being connected to two beads (5) by way of two sidewalls (6), said beads (5) being intended to come into contact with a rim flange having a rim flange top C, each bead having at least one circumferential reinforcement element (7) known as a bead wire, said carcass reinforcement (2) comprising an end (8) at each bead (5), the end (8) of the carcass reinforcement (2) being turned up once in an outward radial direction of the tire and about said bead wire, so as to form a turnup, then being folded in the radially outward direction so as to form a fold of the carcass ply (2), said fold forming a radially external end (12a) and three adjacent parts along an axial axis made
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: September 18, 2018
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventor: Hervé Ferigo
  • Patent number: 10071597
    Abstract: [Object] A pneumatic tire 2 that allows achievement of reduction of rolling resistance without taking influence on a mass into consideration, is provided. [Solution] A profile OL of the tire 2 includes a ground-contact surface 46 and a pair of side surfaces 48. In the profile OL, a zone from a point PB to a point PW is formed by three arcs. The arcs are a first arc, a second arc that extends almost outward from the first arc in the radial direction, and a third arc that extends almost outward from the second arc further in the radial direction. A ratio of a radius R2 of curvature of the second arc to a radius R1of curvature of the first arc is greater than or equal to 1.45 and not greater than 3.26. A ratio of a radius R3 of curvature of the third arc to the radius R1 of curvature of the first arc is greater than or equal to 0.45 and not greater than 0.56. Each sidewall 8 of the tire 2 has a first recess 50a and a second recess 50b that are recessed inward from the side surface 48.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: September 11, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Shintaro Tomita, Susumu Tanaka, Kazuo Asano
  • Patent number: 10005323
    Abstract: The invention relates to a tire having at least one carcass reinforcement comprising reinforcers, surmounted radially on the outside by a crown reinforcement, itself radially on the inside of a tread, said crown reinforcement being made up of at least one layer of reinforcement elements, said tread being connected to two beads by way of two sidewalls, said beads being intended to come into contact with a rim flange having a rim flange top C, each bead having at least one circumferential reinforcement element, said carcass reinforcement comprising an end at each bead, the end of the carcass reinforcement being turned up once in an outward radial direction of the tire and about said bead wire, so as to form a turnup, then being folded in said radially inward direction so as to form a fold forming a radially external end and three adjacent parts along an axial axis made up of a central part, of an axially internal lateral part, and of an axially external lateral part.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: June 26, 2018
    Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
    Inventor: Hervé Ferigo
  • Patent number: 9975385
    Abstract: Tire including: a tread; a pair of sidewalls extending substantially inward radially from ends of the tread; a pair of beads positioned substantially radially inwardly of the sidewalls; and a clinch portion extending from the sidewalls to the beads. A concave curved surface extends on an outer surface of the clinch portion in a circumferential direction. A convex curved surface formed on a radially outer side end of a rim flange is engageable with the concave curved surface. A ratio R1/R of curvature radius R1 of the concave curved surface to a curvature radius R of the convex curved surface of the rim flange satisfies 1.7?R1/R?2.5. The curvature radii R1 and R of the concave and convex curved surfaces, respectively, are each a radius of curvature of an arc on a cross-section taken along a plane including a tire center axis.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: May 22, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Naoki Sugiyama, Makoto Ohkoshi, Hiroki Takahashi
  • Patent number: 9963000
    Abstract: Provided is a pneumatic tire ensuring conductivity while being reduced in weight, and having good fuel efficiency and handling stability. The tire includes a sidewall and a carcass, the sidewall including a laminate of two or more rubber layers including an inner sidewall layer (1) located closest to the carcass, and an outer sidewall layer (2) constituting an outer surface of the tire; the layer (1) including a rubber composition for (1); the layer (2) including a rubber composition for (2); the carcass including a carcass cord topped with a rubber composition for a carcass cord topping (3); the sidewall having a thickness of 3.0 mm or less; the layer (1) having a thickness of 0.2-1.0 mm; the composition for (1) having a volume resistivity of 5.0×107 ?·cm or less; the compositions for (1) and for (2), and the compositions for (3) and for (1) satisfying specific relations.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: May 8, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Daisuke Sato
  • Patent number: 9956828
    Abstract: A heavy duty pneumatic tire includes a clinch portion extending from the sidewalls to the beads. A concave curved surface extends on an outer surface of the clinch portion in a circumferential direction. A convex curved surface is engageable with the concave curved surface. A ratio R1/R2 of a radius of curvature of the concave curved surface to a radius of curvature of the convex curved surface, satisfies 1.7?R1/R2?3.9, a ratio D1/R2 of a depth of the concave curved surface to the radius of curvature of the convex curved surface satisfies 0.05?D1/R2?0.09, and the radius of curvature R1 of the concave curved surface and the radius of curvature R2 of the convex curved surface are each a radius of curvature of an arc on a cross section as taken along a plane including a center axis of the tire.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: May 1, 2018
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yukihide Oya
  • Patent number: 9902211
    Abstract: This disclosure aims to achieve reduction in rolling resistance and ensure excellent steering stability. In this disclosure, a tire widthwise maximum width of a carcass is 1.35 W or less; a tire outer surface has a recess; within a second height range h2 and on the outer side in a tire radial direction with respect to bead cores, a radius of curvature of the carcass is 0.46 h or more; within a third height range h3, the radius of curvature of the carcass is 0.62 h or more; during movement of a virtual point from a bead core height position Hbc toward a third height position H3, a tire gauge at the virtual point is reduced by a reduction amount of 0.025×G0/mm or less; and the tire gauge at the virtual point at the third height position H3 is 10% or more of the tire widthwise maximum width of the bead core.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: February 27, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Naoto Okazaki
  • Patent number: 9895928
    Abstract: A spherical wheel to move a vehicle comprises two caps, the surface of which follows the spherical surface of the wheel, the caps being articulated by means of a pivot link relative to a shaft. The wheel further comprises two casters each arranged in an opening of each of the caps, the opening centered about the axis of the corresponding pivot link, each caster arranged in the extension of the pivot link of the cap concerned. Each caster ensures a rolling at the level of the spherical surface. Radii S of the opening of each cap and r of the corresponding caster are defined to substantially balance forces needed to drive a cap and the corresponding caster when the wheel goes from bearing on the ground on a cap at the edge of the opening to bearing on the ground on the corresponding caster.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: February 20, 2018
    Assignee: SOFTBANK ROBOTICS EUROPE
    Inventors: Vincent Clerc, Philippe Roux
  • Patent number: 9783003
    Abstract: A pneumatic tire includes an inner-side cross belt and an outer-side cross belt forming belt angles of mutually different signs with the tire circumferential direction with absolute values from 46° to 80°, inclusive; a circumferential reinforcing layer arranged between the inner-side cross belt and the outer-side cross belt and forming a belt angle of ±5° with the tire circumferential direction; and a supplemental belt arranged outside the outer-side cross belt in the radial direction of the tire and forming a belt angle with the tire circumferential direction with an absolute value between 10° and 45° inclusive.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: October 10, 2017
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Koichi Kotoku, Koshi Iga, Hideki Hamanaka
  • Patent number: 9724970
    Abstract: There is provided an pneumatic tire including a pair of left and right beads each including a bead core and a bead filler, and a carcass ply extending between the pair of beads, wherein the carcass ply is wound up around the bead core from the outside to the inside in the widthwise direction of the tire, and an end portion of the wind-up portion of the carcass ply is provided with notches at a plurality of positions in the circumference direction of the tire.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: August 8, 2017
    Assignee: TOYO TIRE & RUBBER CO., LTD.
    Inventor: Yu Tomitaka
  • Patent number: 9718310
    Abstract: A wheel for vehicles includes: a rim and a tire mounted on the rim and inflated to an operating pressure; axial end portions of a tread band of the tire radially spaced apart the same distance from a rotation axis of the wheel and a median circumferential line of the tread band axially shifted by a predetermined distance relative to a mid-line plane of the wheel; the wheel mounted on a car with a camber angle substantially zero and with the median circumferential line shifted toward the outside of the car relative to the mid-line plane.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: August 1, 2017
    Assignee: PIRELLI TYRE S.P.A.
    Inventor: Piero Losi
  • Patent number: 9669666
    Abstract: A runflat tire includes a tire body, a carcass extending from a tread portion through sidewall portions of the tire body to bead cores in bead portions of the tire body, and sidewall-reinforcing rubber layers having cross-sectional crescent shapes and positioned on inner sides of the carcass along the sidewall portions, respectively. The tire body has height Ha in range of 8˜17 mm where the height Ha is measured from a rim line of the tire body to inner edge of an innermost dimple/fin row of the tire body in radial direction of the tire body, the innermost row is formed in dimple/fin forming region including one or more dimple/fin rows having dimple/fin portions arrayed in circumferential direction of the tire body, and the dimple/fin forming region is formed on external surface of a sidewall portion on outer side of the rim line in the radial direction.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: June 6, 2017
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Naoki Yukawa
  • Patent number: 9669660
    Abstract: When a pneumatic tire is in a reference state of being fitted with a rim that is one inch larger than a regular rim in width, of holding 15 kPa internal pressure, and of being under no load, then a tread thickness distribution curve represented by f(y)=1?t(y)/t(0) is 0.01 to 0.03 when y=0.3; 0.03 to 0.06 when y=0.4; and 0.06 to 0.10 when y=0.5, where y denotes a ratio of a distance in an axial direction from an equator surface relative to a distance L in the axial direction between the equator surface and a maximum width position of a carcass, and t(y) denotes a tread thickness corresponding to a distance in a radial direction between an outer surface of the carcass and an outer surface of a tread at an axial direction position corresponding to y.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: June 6, 2017
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Kazuo Asano, Yasuhiro Kubota
  • Patent number: 9604503
    Abstract: A belt layer of a pneumatic tire includes an inner-side cross belt and an outer-side cross belt forming belt angles of mutually different signs with the tire circumferential direction with absolute values from 46° to 80°, inclusive; a circumferential reinforcing layer arranged between the inner-side cross belt and the outer-side cross belt and forming a belt angle of within ±5° with the tire circumferential direction; and a supplemental belt arranged inside of the inner-side cross belt in the radial direction of the tire and forming a belt angle with the tire circumferential direction with an absolute value from 10° to 45°, inclusive.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: March 28, 2017
    Assignee: The Yokohama Rubber Co., LTD.
    Inventors: Koshi Iga, Hideki Hamanaka, Koichi Kotoku
  • Patent number: 9487051
    Abstract: The present invention provides a pneumatic radial tire of the present invention is characterized in that: in a cross sectional view in the tire widthwise direction in the predetermined state thereof, provided that: i) Hout represents a distance in the tire radial direction between the maximum width position from the tire equatorial plane and a ground-contact end on the vehicle outer side of the tread and Hin represents a distance in the tire radial direction between the maximum width position from the tire equatorial plane and a ground-contact end on the vehicle inner side of the tread, Hout<Hin; ii) radius of curvature (Rout) of a tire side portion on the vehicle outer side, at the maximum width position thereof, is smaller than radius of curvature (Rin) of a tire side portion on the vehicle inner side, at the maximum width position thereof; and iii) a negative ratio of a ground-contact surface in a vehicle-outer side half portion of the tread is smaller than a negative ratio of a ground-contact surface i
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: November 8, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Yasuaki Ohno
  • Patent number: 9440495
    Abstract: The present invention provides a pneumatic tire having a carcass 11, at least one circumferential belt layer 17 provided on the outer side in the tire radial direction of the carcass 11, and plural intersecting belt layers 18 provided on the outer side in the tire radial direction of the circumferential belt layer 17, at least one of the plural intersecting belt layers having wider belt width in the tire widthwise direction than the circumferential belt layer 17, comprising: at least one layer of end-portion circumferential belt 15 provided in respective tire widthwise tread end regions on the outer side of the carcass 11 and on the inner side of the circumferential belt layer 17 in the tire radial direction; and at least one layer of slant belt 16 provided in the tire widthwise tread central region on the outer side of the carcass 11 and on the inner side of the circumferential belt layer 17 in the tire radial direction.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: September 13, 2016
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Yusuke Yoshikawa
  • Patent number: 9272577
    Abstract: A pneumatic radial aircraft tire is described having a B/A ranging between 60-70%. The tire may further optionally include a tire bead portion having a Ra/Fr1 relationship which ranges from about 1 to about 2.1. The tire may further optionally include a SW/TS ratio which ranges from about 0.1 to about 0.5, wherein SW is the chafer gauge at area A, TS is the total sidewall rubber gauge at area A, wherein A is defined as the region in the sidewall that has a lower radial endpoint defined by the point of contact between the flange and the tire at inflated, unloaded condition, and an upper radial endpoint AH defined by the tire wheel flange point of contact when the tire is at inflated, and at 200% rated load.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: March 1, 2016
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Kiyoshi Ueyoko
  • Patent number: 9199513
    Abstract: An intersection of an extended line of a shoulder side arc and an extended line of a side portion arc is a reference point P, an aspect ratio is ?, and an angle ? formed by a straight line A joining the reference point P and a center crown CC and a straight line B in a tire width direction that passes through the center crown CC is configured such that 0.025×?+1.0???0.045×?+2.5. A curvature radius Rc of a center portion arc and a curvature radius Rs of the shoulder side arc are configured such that 12?Rc/Rs?30. A reference developed width L from a tire equatorial plane CL to an edge of the shoulder side arc on a tire width direction inner side and a developed tread width TDW are configured such that 0.2?L/(TDW/2)?0.7.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: December 1, 2015
    Assignee: The Yokohama Rubber Co., LTD.
    Inventor: Masataka Kubota
  • Patent number: 9139047
    Abstract: A tire contour shape is formed by a single arc in a condition in which tire flattening rate is more than 55% and less than 70% and internal pressure is 5%. Shoulder lateral grooves extend at an angle ? of 80 to 90° from the axially outer side of the tread ground-contact edge to the axially inner side of the tire, and the tire axially inner ends terminate within the shoulder land portion. A tire axial distance Ds between the tire axially inner end and the shoulder circumferential main groove is in the range of 3.5 to 5.5 mm, the shoulder lateral groove has the deepest part where the groove depth is largest, and the groove depth of the deepest part is 70 to 90% of the groove depth of the shoulder circumferential main grooves.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: September 22, 2015
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Masaki Terashima
  • Patent number: 9132700
    Abstract: In tread-width-direction cross section under a standard internal pressure and no load condition, a point B is an outermost point of overlapping area in tread-width-direction, a line CC is a line passing through an outermost point CT of carcass layer in tread-width-direction and extending along tread-width-direction, a point C is a point of tire surface through the line CC, a line segment BW is a line segment extending in tread-width-direction from an equator center line to point B, a line segment CW is a line segment extending along tread-width-direction from equator center line to point C, and a line segment BC is a line segment connecting between point B and C. A ratio BW/CW between a length of BW and CW is not less than 0.6 and not more than 0.8. An angle ? formed by BC and CW is not less than 50° and not more than 70°.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: September 15, 2015
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Eiji Ichihara