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公开(公告)号：US10894376B2
公开(公告)日：2021-01-19
申请号：US15631507
申请日：2017-06-23
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Naoki Sugiyama , Tomoharu Torii
Abstract: The present invention has an object of providing a pneumatic tire that exhibits better uniformity by improving the wire wound body for constituting the bead core. The pneumatic tire 1 comprises a bead core 5 comprising a wire wound body 10 in which one bead wire 10a is spirally wound in a continuous around a tire rotational axis CL so that a plurality of layers of the bead wire are formed in a radial direction of the tire. The wire wound body 10 comprises a first part 13 and a second part 14. The first part 13 comprises a plurality of layers of the bead wire 10a each circumferentially extending with a constant radius from the tire rotational axis CL. The second part comprises a plurality of layers of the bead wire 10a each circumferentially extending while changing its radius from the tire rotational axis CL.
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公开(公告)号：US20140311650A1
公开(公告)日：2014-10-23
申请号：US14354050
申请日：2012-10-19
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Naoki Sugiyama , Makoto Ohkoshi , Hiroki Takahashi
CPC classification number: B60C15/0628 , B60C15/0009 , B60C15/024 , B60C15/0607 , B60C15/0635 , B60C2015/009 , B60C2015/0614 , B60C2015/0621 , B60C2015/0625 , B60C2200/06 , Y10T152/10828
Abstract: A tire (1) includes: a tread (2); a pair of sidewalls (3) that extends almost inward, in a radial direction, from ends of the tread (2); a pair of beads (4) positioned almost inward of the sidewalls (3) in the radial direction; and a clinch portion (5) that extends from the sidewalls (3) to the beads (4), wherein a concave curved surface (21) extends on an outer surface of the clinch portion (5) in a circumferential direction, and a convex curved surface (22) formed on an outer side end, in the radial direction, of a rim flange (30) is engageable with the concave curved surface (21), a ratio R1/R of a radius of curvature R1 of the concave curved surface (21) to a radius of curvature R of the convex curved surface (22) of the rim flange, satisfies 1.7≦R1/R≦2.5, and the radius of curvature R1 of the concave curved surface (21) and the radius of curvature R of the convex curved surface (22) 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.
Abstract translation: 轮胎（1）包括：胎面（2）; 从胎面（2）的端部沿径向几乎向内延伸的一对侧壁（3）; 在径向方向上几乎位于侧壁（3）的内侧的一对珠（4）; 以及从所述侧壁（3）延伸到所述胎圈（4）的夹紧部（5），其中，凹形弯曲面（21）在所述夹紧部（5）的外周面上沿圆周方向延伸， 形成在轮辋凸缘（30）的径向外侧端部的曲面（22）能够与凹曲面（21）接合，凹曲面的曲率半径R1的比率R1 / R 表面（21）与轮辋凸缘的凸曲面（22）的曲率半径R成为1.7＆lt; N1; R1 / R＆nlE; 2.5，凹曲面（21）的曲率半径R1和半径 凸曲面（22）的曲率半径R是沿着包括轮胎的中心轴的平面截取的截面上的弧的曲率半径。
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公开(公告)号：US09889706B2
公开(公告)日：2018-02-13
申请号：US14377206
申请日：2012-11-22
Applicant: SUMITOMO RUBBER INDUSTRIES LTD.
Inventor： Naoki Sugiyama
CPC classification number: B60C9/04 , B29D30/38 , B29D30/42 , B29D2030/423 , B60C5/00 , B60C9/023 , B60C2009/0408 , B60C2009/0441 , Y10T152/10855
Abstract: A pneumatic tire is provided with a carcass configured from at least one carcass ply. The carcass ply is formed by arranging, in the tire circumferential direction, rectangular sheet-shaped ply pieces, each having a radial direction length larger than a tire circumferential direction length. In each of the ply pieces, carcass cords are arranged parallel to each other in the longitudinal direction, and adjacent ply pieces at least partially overlap with each other in the tire circumferential direction, and in each of the ply pieces, the distance (Pe) between the carcass cords in at least one side edge portion in the circumferential direction of the ply piece, is larger than the distance (Pc) between the carcass cords in a central portion of the ply piece.
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公开(公告)号：US10688835B2
公开(公告)日：2020-06-23
申请号：US15298939
申请日：2016-10-20
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Hiroshi Okagawa , Kosuke Nakano , Tomoyuki Kujime , Naoki Sugiyama
Abstract: A run-flat tire comprises a tread portion, sidewall portions, bead portions, and a carcass ply extending between the bead portions. The sidewall portions are each provided therein with a sidewall reinforcing rubber layer having a crescent-shaped cross sectional shape and disposed on the axially inside of the carcass ply. The sidewall portions are each provided in the axially outer surface thereof with a rim protector which projects radially outward most on the radially outside of the radially inner edge of the sidewall reinforcing rubber layer. The bead portions are each provided therein with an axially inside core and an axially outside core between which each radially inner edge portion of the carcass ply is secured. When measured along a normal line drawn normally to the carcass ply from an apex of the rim protector, the thickness of the sidewall reinforcing rubber layer is in a range of from 29% to 35% of the thickness of the tire.
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公开(公告)号：US10350845B2
公开(公告)日：2019-07-16
申请号：US14902968
申请日：2014-09-16
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Naoki Sugiyama , Yuichi Nakano
Abstract: Provided are: vent pieces, which can easily be added later and with which the occurrence of spew can be suppressed without restriction in the locations where the vent pieces can be orderly arranged in vulcanized molding of a pneumatic tire; and a manufacturing method for pneumatic tire in which vulcanization molding of a raw cover is performed by using a vulcanization mold in which said vent piece has been embedded. A vent piece, which is used by being embedded in a prepared hole for air vent provided on the inner surface of a pneumatic tire vulcanization mold, is a cylinder without a hole in the axial direction and is configured to perform air vent from a gap formed between the vent piece and the side surface of the prepared hole. A vent piece has a saw cut extending in the axial direction formed on the side surface of the cylinder.
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Patent Agency Ranking
公开(公告)号：US10308082B2
公开(公告)日：2019-06-04
申请号：US14418788
申请日：2013-06-25
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Naoki Sugiyama
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. The side inner-cavity surface 12 includes a smooth surface 15 which does not have unevenness, and the total surface area of the smooth surface 15 is more than 90% of the total area of the side inner-cavity surface 12.
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公开(公告)号：US09975385B2
公开(公告)日：2018-05-22
申请号：US14354050
申请日：2012-10-19
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Naoki Sugiyama , Makoto Ohkoshi , Hiroki Takahashi
IPC: B60C15/02 , B60C15/06 , B60C15/024 , B60C15/00
CPC classification number: B60C15/0628 , B60C15/0009 , B60C15/024 , B60C15/0607 , B60C15/0635 , B60C2015/009 , B60C2015/0614 , B60C2015/0621 , B60C2015/0625 , B60C2200/06 , Y10T152/10828
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.
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公开(公告)号：US20160046093A1
公开(公告)日：2016-02-18
申请号：US14823018
申请日：2015-08-11
Applicant: SUMITOMO RUBBER INDUSTRIES LTD.
Inventor： Kei KOHARA , Naoki Sugiyama
IPC: B29D30/16
CPC classification number: B29D30/1628
Abstract: A method for manufacturing a pneumatic tire includes helically winding a first rubber strip including first composition on outer side of a rigid core in circumferential direction of the core such that a first rubber layer including the first strip is formed to have first overlapped portions overlapping side edges of the first strip in helical pattern, and helically winding a second rubber strip including second composition on external surface of the first layer in the same winding direction as the first strip such that a second rubber layer including the second strip is formed to have second overlapped portions overlapping side edges of the second strip in helical pattern. The core has external surface shaped to form inner cavity of a pneumatic tire, and the winding of the second strip includes winding the second strip such that each second overlapped portion is formed between adjacent first overlapped portions.
Abstract translation: 一种充气轮胎的制造方法，其特征在于，在所述芯部的圆周方向上，在刚性芯的外侧螺旋状地卷绕包含第一组成的第一橡胶条，使得包含所述第一条带的第一橡胶层形成为具有与所述第一成分重叠的第一重叠部分 的第一条带，并且在与第一条带相同的卷绕方向上螺旋缠绕包括第二组合物的第二组合物的第二橡胶条，使得包括第二条带的第二橡胶层形成为具有第二重叠 第二条带的边缘以螺旋图案重叠。 芯具有外表面形状以形成充气轮胎的内腔，并且第二条的卷绕包括缠绕第二条，使得每个第二重叠部分形成在相邻的第一重叠部分之间。
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公开(公告)号：US20150210123A1
公开(公告)日：2015-07-30
申请号：US14418788
申请日：2013-06-25
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Naoki Sugiyama
CPC classification number: B60C17/0009 , B29D30/12 , B29D2030/201 , B60C3/00 , B60C5/12 , B60C9/023 , B60C13/00 , B60C15/00 , B60C15/0018 , B60C17/0045 , B60C2013/026 , B60C2017/0063
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. The side inner-cavity surface 12 includes a smooth surface 15 which does not have unevenness, and the total surface area of the smooth surface 15 is more than 90% of the total area of the side inner-cavity surface 12.
Abstract translation: 轮胎1是具有从胎面部2通过侧壁部3延伸到胎圈部4中的胎圈芯5的胎体6，以及设置在胎体部6内的侧部加强橡胶层10 侧壁部分3并且具有基本上月牙形的横截面。 在轮胎子午线横截面中，包括在正常状态下的轮胎旋转轴线，使得轮胎安装在正常轮辋上，充气至正常内部压力并且无负载，轮胎内腔表面11包括侧向内侧面， 胎侧部分4的胎圈趾部4e的侧内腔表面12的轮胎径向的距离在轮胎径向方向上的长度H的0.4倍至0.9倍的范围内 侧内腔表面12包括不具有凹凸的光滑表面15，并且光滑表面15的总表面积大于侧面内腔表面的总面积的90％ 12。
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公开(公告)号：US09944033B2
公开(公告)日：2018-04-17
申请号：US15028102
申请日：2014-09-16
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Naoki Sugiyama
CPC classification number: B29D30/0661 , B29C33/0055 , B29D30/0662 , B29D30/12 , B29D2030/0663
Abstract: To prevent rubber from becoming membrane-like mold flash between mating faces and being adhered. It is a rigid core for forming a tire which comprises an annular core main body provided in an outer surface thereof with a tire molding surface for forming a raw tire. The core main body is composed of a plurality of core segments which are divided in a circumferential direction, and each of the core segments has both circumferential end surfaces as mating faces, and the mating faces adjacent to each other in the circumferential direction are butted to each other so as to form the core main body. Each of the mating faces is provided with a border recess extending along an outer peripheral edge of the mating face and formed by cutting away a corner between the tire molding surface and the mating face.
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