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公开(公告)号：US20190168544A1
公开(公告)日：2019-06-06
申请号：US16206481
申请日：2018-11-30
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Sawa OGIHARA , Emi UEDA , Ken MIYAZAWA , Tatsuya SASAKI , Ryuhei SANAE , Masatoshi TANAKA
Abstract: A tire is provided with a tread pattern comprising a series of a number N of tread design units arranged repeatedly and circumferentially of the tire in a sequence and having a number m of different circumferential lengths. A first pulse train is defined by viewing the tread design units as pulses arranged in the same sequence as the tread design units at intervals which are defined by the circumferential lengths of the corresponding tread design units expressed in term of a ratio to one of the number m of different circumferential lengths. A maximum value Pmax of amplitudes P(k) (k=order from 1 to 2N) of frequencies obtained by Fourier transforming the first pulse train is limited to specific values. The amplitudes P(k) and P(k+1) of every two of the adjacent orders (k) and (k+1) do not satisfy a condition that both of the amplitudes P(k) and P(k+1) have values of 2/3 or more times the maximum value Pmax.
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公开(公告)号：US20220168981A1
公开(公告)日：2022-06-02
申请号：US17455169
申请日：2021-11-16
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Sawa OGIHARA , Ryuhei SANAE
IPC: B29D30/06
Abstract: An object is to enhance the fuel economy performance of a tire while maintaining the outer appearance of the tire. A tire vulcanization mold 1 includes a tread mold 2 having a tread molding surface 6, and side molds 3 having sidewall molding surfaces 7. A corner portion k1 of a butt surface 4 and the tread molding surface 6 of the tread mold 2 is rounded as a first arc 10. A corner portion k2 of a butt surface 5 and the sidewall molding surface 7 of the side mold 3 is rounded as a second arc 11. A radius of curvature R1 of the first arc 10 is 1.2 to 2.0 times a radius of curvature R2 of the second arc 11.
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公开(公告)号：US20190308460A1
公开(公告)日：2019-10-10
申请号：US16296781
申请日：2019-03-08
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Yoshifumi KAWAGOE , Sawa OGIHARA , Daisuke AOKI
Abstract: An outer shoulder land region includes first shoulder lateral grooves each extending axially inwardly from an outer tread ground contact edge to have a first inner end in the tyre axial direction within the outer shoulder land region, first outer shoulder lateral sipes each connecting between the first inner end and an outer shoulder main groove, and second outer shoulder lateral sipes each extending axially inwardly from the outer tread ground contact edge to have a second inner end positioned on an axially outer side of the first inner ends. An outer middle land region includes outer middle lateral sipes each smoothly connected with the respective first outer shoulder lateral sipe with the outer shoulder main groove therebetween. Each of the outer middle lateral sipes connects between the outer shoulder main groove and an outer crown main groove and has a third inner end within the outer middle land region.
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公开(公告)号：US20190168545A1
公开(公告)日：2019-06-06
申请号：US16206588
申请日：2018-11-30
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Tatsuya SASAKI , Emi UEDA , Masatoshi TANAKA , Ken MIYAZAWA , Sawa OGIHARA , Ryuhei SANAE
Abstract: A tire has a tread pattern comprising a series of a number N of tread design units arranged repeatedly and circumferentially of the tire in a sequence. The tread design units have at least two different circumferential lengths. Viewing the tread design units as pulses, a pulse train is defined. Magnitudes of the pulses are proportional to the circumferential lengths of the tread design units. The average of the magnitudes corresponding to the different circumferential lengths is limited to 1.00. Maximum value Fmax of amplitude F(k) of k-th order (k=1 to 2N) of frequencies obtained by Fourier transforming the pulse train is limited to be 4.52−0.0125 N. The amplitudes F(k) and F(k+1) of every two of the adjacent orders (k) and (k+1) are limited so as not to satisfy a condition that both of the amplitudes F(k) and F(k+1) are 2/3 or more times the Fmax.
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公开(公告)号：US20230311577A1
公开(公告)日：2023-10-05
申请号：US18119558
申请日：2023-03-09
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Sawa OGIHARA , Ryuhei SANAE , Ken MIYAZAWA , Tatsuya SASAKI , Naoto OISHI
CPC classification number: B60C11/1204 , B60C11/0302 , B60C11/0304 , B60C11/1236 , B60C2011/0341 , B60C2011/1213
Abstract: A tread portion includes a land portion provided with lateral groove-shaped elements arranged in a first array. Each lateral groove-shaped element extends from a first end to a second end. In the first array, the second end of one of the lateral groove-shaped elements is located at the circumferential same position as the first end of another of the lateral groove-shaped elements. Each lateral groove-shaped elements includes a first portion on the first end side, a second portion on the second end side, and a third portion therebetween. The first, second, and third portions are inclined in the same direction. An angle θ3 of the third portion to the tire circumferential direction is smaller than angles θ1 and 02 of the first and second portions, and a length of the third portion is greater than a sum of lengths of the first and second portions.
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Patent Agency Ranking
公开(公告)号：US20220080780A1
公开(公告)日：2022-03-17
申请号：US17471561
申请日：2021-09-10
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Yuta SAKAKIBARA , Tomohiro HAMADA , Tokuhito NAKAJIMA , Sawa OGIHARA , Suxiang YUAN
IPC: B60C13/00
Abstract: A tire includes a visible outer surface being provided with a decorative region at least partially, the decorative region having 2 to 10 micro-protrusions per 1 mm2. The micro-protrusions protrude in a tapered manner toward outwardly of the tire. The micro-protrusions include first protrusions having a first taper angle and a second protrusions having a second taper angle greater than the first taper angle.
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公开(公告)号：US20170015144A1
公开(公告)日：2017-01-19
申请号：US15194893
申请日：2016-06-28
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Sawa OGIHARA
CPC classification number: B60C11/1307 , B60C11/0306 , B60C11/0327 , B60C11/12 , B60C11/1204 , B60C11/1236 , B60C11/1259 , B60C11/1272 , B60C2011/0334 , B60C2011/0341 , B60C2011/0348 , B60C2011/0358 , B60C2011/036 , B60C2011/0365 , B60C2011/0367 , B60C2011/0379 , B60C2011/0381 , B60C2011/0383 , B60C2011/1209 , B60C2011/1227 , B60C2011/1338
Abstract: A pneumatic tire includes a tread portion provided with a shoulder main groove and a crown main groove to form a middle land portion therebetween. The middle land portion is provided with a first middle lug groove including a first groove wall and a second groove wall, wherein the first groove wall includes a protrusion protruding toward the second groove wall on the side of the shoulder main groove. The protrusion includes a front wall located so as to form a sipe portion between the front wall and the second groove wall, a top wall, a first lateral wall located axially outward of the front wall and a second lateral wall located axially inward of the front wall. The front wall is configured to a triangular shape.
Abstract translation: 充气轮胎包括设置有胎肩主槽和胎冠主槽的胎面部，以在它们之间形成中间接地部。 中间陆部设置有包括第一槽壁和第二槽壁的第一中间横沟，其中第一槽壁包括在肩部主槽的侧面朝向第二槽壁突出的突起。 所述突出部包括前壁，所述前壁在所述前壁和所述第二槽壁之间形成刀槽花纹部分，顶壁，位于所述前壁的轴向外侧的第一侧壁和位于所述前壁的轴向内侧的第二侧壁 壁。 前壁配置成三角形。
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公开(公告)号：US20200254826A1
公开(公告)日：2020-08-13
申请号：US16745190
申请日：2020-01-16
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Sawa OGIHARA
IPC: B60C13/00
Abstract: Provided is a tire that can prevent projections and recesses on an outer surface of a sidewall portion from becoming conspicuous while inhibiting occurrence of cracks.The tire includes a sidewall portion 3. An outer surface of the sidewall portion 3 has a decorative pattern 5. The decorative pattern 5 includes a radially arranged ridge portion 6 in which a plurality of ridges 8 connected to each other at a center 7 extend radially.
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公开(公告)号：US20200016938A1
公开(公告)日：2020-01-16
申请号：US16448216
申请日：2019-06-21
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Sawa OGIHARA
Abstract: A tire that includes a decorative pattern formed on a surface of a sidewall portion. The decorative pattern is formed such that a plurality of ridges that extend in a tire radial direction are aligned in a tire circumferential direction so as to form gaps. A transverse cross-section of each ridge is tapered so as to gradually reduce a length along the surface such that the greater a distance from the surface is, the less the length along the surface is. The decorative pattern is structured so as to satisfy expressions (1) and (2): 20≤A≤40 (1) 0.15≤C≤0.25 (2) wherein A represents a taper angle (degree) of the ridge, and C represents a minimum length (mm) of each gap measured along the surface.
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公开(公告)号：US20160193874A1
公开(公告)日：2016-07-07
申请号：US14910967
申请日：2014-07-17
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Kazuo ASANO , Yasuhiro KUBOTA , Sawa OGIHARA
CPC classification number: B60C3/04 , B60C9/02 , B60C9/20 , B60C9/2009 , B60C9/2204 , B60C15/00 , B60C2009/0078 , B60C2009/1828 , B60C2009/2019 , B60C2009/2048 , B60C2009/2058 , B60C2009/208 , B60C2009/2083 , B60C2009/2093 , B60C2009/2228
Abstract: To improve the rolling resistance and air resistance of a tire. It has a belt layer composed of two belt plies in which belt cords are obliquely arranged at mutually opposite angles θ with respect to the tire equator, and a band layer composed of a single band ply in which a band cord is wound spirally in the tire circumferential direction. The angle θ of the belt cords is in a range of 35 degrees˜55 degrees. When Wt is the tire cross sectional width (unit: mm), and Db is a bead diameter (unit: inch), the tire cross sectional width Wt satisfies the following expressions (1), (2). Wt= =−0.7257×(Db)̂2+48.568×Db−552.33 (2)
Abstract translation: 提高轮胎的滚动阻力和空气阻力。 它具有由两个带束层组成的带束层，其中带帘线以相互相反的角度倾斜地布置; 相对于轮胎赤道，以及由单带帘布层组成的带层，其中带束线在轮胎周向上螺旋地卷绕。 角度和角度 的皮带帘线在35度〜55度的范围内。 当Wt为轮胎截面宽度（单位：mm），Db为胎圈直径（单位：英寸）时，轮胎横截面宽度Wt满足下式（1），（2）。 Wt = < - 0.7257×（Db）2 + 42.763×Db-339.67（1）Wt> = -0.7257×（Db）2 + 48.568×Db-552.33（2）
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