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公开(公告)号：US20170334249A1
公开(公告)日：2017-11-23
申请号：US15595090
申请日：2017-05-15
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Yoshiki KANAYA , Ikuo Atake , Shuji Kagimoto
Abstract: A heavy-duty tire includes a tread part formed such that the tread part includes a crown profile including tire equator, and a pair of shoulder profiles extending from outer sides of the crown profile to tread edges. In a tire cross section including tire rotation axis in 5% internal pressure state in which the tire is mounted to a normal rim, filled with air at internal pressure of 5% of normal internal pressure and loaded with no load, each of the crown and shoulder profiles has an arc shape convex toward tire radial direction outer side such that ratio Rc/Rs of curvature radius Re of the crown profile to curvature radius Rs of each shoulder profile is 7.0 or more, and a tire axial direction distance from the equator to a connecting point between the crown profile and each shoulder profile is 0.70 or more times a tread half width.
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公开(公告)号：US09302549B2
公开(公告)日：2016-04-05
申请号：US13689021
申请日：2012-11-29
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Ikuo Atake
CPC classification number: B60C11/0311 , B60C11/0306 , B60C11/0309 , B60C11/125 , B60C11/1384 , B60C13/00 , B60C2011/0346 , B60C2011/0358 , B60C2011/0367 , B60C2011/0372 , B60C2011/0381
Abstract: A heavy duty pneumatic tire comprises a tread portion provided with a crown main groove and a middle axial groove. The middle axial groove extends axially outwardly from its axially inner end axially outwardly spaced apart from the crown main groove and inclines with respect to the tire circumferential direction at an angle of from 45 to 75 degrees. In a cross section along the widthwise center line of the middle axial groove, an end wall of the axially inner end is inclined at an angle 0 to 50 degrees with respect to the normal direction to the tread from the radially outer edge of the end wall toward the groove bottom, and a corner between the end wall and the groove bottom is chamfered by an arc having a radius of curvature of 1 to 10 mm.
Abstract translation: 重型充气轮胎包括设置有胎冠主槽和中间轴向槽的胎面部。 中间轴向槽从其轴向内端轴向向外延伸，轴向向外与冠主槽间隔开，并相对于轮胎圆周方向以45度至75度的角度倾斜。 在沿着中间轴向槽的横向中心线的横截面中，轴向内端的端壁相对于从胎面的径向外边缘相对于胎面的法线方向以0至50度的角度倾斜 朝向凹槽底部，并且端壁和凹槽底部之间的角部通过具有1至10mm的曲率半径的弧进行倒角。
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Patent Agency Ranking
公开(公告)号：US09132702B2
公开(公告)日：2015-09-15
申请号：US14150794
申请日：2014-01-09
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Taro Okabe , Satoshi Tanaka , Ikuo Atake
CPC classification number: B60C11/0306 , B60C11/125 , B60C11/1259 , B60C11/1263 , B60C11/1369 , B60C2011/0346 , B60C2011/0369 , B60C2011/0379 , B60C2200/06 , Y02T10/862
Abstract: A heavy duty pneumatic tire includes a tread portion provided with a pair of shoulder main grooves disposed axially outermost side, and at a center main groove between the shoulder main grooves to form a pair of middle portions. Each middle portion is provided with a middle sub groove, axially outer middle lateral grooves, and inner middle lateral grooves. The respective number of outer and inner middle lateral grooves are of from 40 to 50 in each middle portion. Each of the outer and inner middle lateral grooves includes a shallow bottom part having a depth smaller than that of the shoulder and center main grooves. The shallow bottom part is provided with a groove bottom sipe that extends along a longitudinal direction of each lateral grooves and includes a first portion, and a second portion having a depth smaller than the first portion.
Abstract translation: 重型充气轮胎包括：胎面部，其设置有沿轴向最外侧设置的一对胎肩主槽，并且在胎肩主槽之间的中心主槽处形成一对中间部。 每个中间部设有中间副槽，轴向外侧中间侧槽和内侧中间侧槽。 每个中间部分的外侧和内侧中间横向槽的数量分别为40〜50。 外侧和内侧中间横向槽中的每一个包括具有比肩部和中心主槽的深度小的深度底部。 浅底部设置有沿着每个横向槽的纵向方向延伸的槽底刀槽花纹，并且包括第一部分和具有比第一部分小的深度的第二部分。
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公开(公告)号：US10583693B2
公开(公告)日：2020-03-10
申请号：US15610051
申请日：2017-05-31
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Ikuo Atake
Abstract: A tire 22 includes a plurality of ribs 68 aligned in an axial direction. A rib 68s, among the plurality of ribs 68, disposed on an outer side in the axial direction is sectioned into a body portion 74 and a side portion 76 by a groove 72 that extends in a circumferential direction. The tire 22 includes a tread 26 and a pair of sidewalls 28. The sidewalls 28 extend almost inward from ends, respectively, of the tread 26 in a radial direction. The tread 26 includes a base layer 52, and a cap layer 54 disposed outward of the base layer 52 in the radial direction. The side portion 76 is formed by the cap layer 54 and a corresponding one of the sidewalls 28. The sidewall 28 is stacked on the cap layer 54 in the side portion 76.
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公开(公告)号：US20140332133A1
公开(公告)日：2014-11-13
申请号：US14361225
申请日：2012-11-27
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Ikuo Atake
CPC classification number: B60C11/0083 , B60C11/01 , B60C11/0306 , B60C11/0332 , B60C2011/013 , B60C2200/06
Abstract: Shoulder drop wear and triangular wear are prevented. A heavy duty tire which includes a shoulder block includes a first arc portion having a radius of curvature, in which a tread contour includes an arc center at a tire equatorial surface at a 5% internal pressure state; and a second arc portion having a radius of curvature of which intersects with the first arc portion at an intersection. An arc center of the second arc portion is located on a radial line passing through the intersection. A ratio of the radii of curvature is between 0.2 and 0.5. A ratio between a tire radial direction distance from an equatorial point to a tread edge and a radial direction distance from the equatorial point to a virtual tread edge on a line extending from the first arc portion is equal to or higher than 0.5 or lower than 1.0.
Abstract translation: 防止肩部脱落磨损和三角磨损。 包括肩座的重型轮胎包括具有曲率半径的第一弧形部分，其中胎面轮廓在轮胎赤道表面处包含在5％内压状态下的圆弧中心; 以及在交叉点具有与第一弧形部分相交的曲率半径的第二弧形部分。 第二弧形部分的圆弧中心位于穿过交叉点的径向线上。 曲率半径的比率在0.2和0.5之间。 从赤道点到胎面边缘的轮胎径向距离与从第一弧形部分延伸的线上的赤道点到假想胎面边缘的径向距离之间的比率等于或高于0.5或低于1.0 。
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公开(公告)号：US09770950B2
公开(公告)日：2017-09-26
申请号：US14361225
申请日：2012-11-27
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Ikuo Atake
CPC classification number: B60C11/0083 , B60C11/01 , B60C11/0306 , B60C11/0332 , B60C2011/013 , B60C2200/06
Abstract: Shoulder drop wear and triangular wear are prevented. A heavy duty tire which includes a shoulder block includes a first arc portion having a radius of curvature, in which a tread contour includes an arc center at a tire equatorial surface at a 5% internal pressure state; and a second arc portion having a radius of curvature of which intersects with the first arc portion at an intersection. An arc center of the second arc portion is located on a radial line passing through the intersection. A ratio of the radii of curvature is between 0.2 and 0.5. A ratio between a tire radial direction distance from an equatorial point to a tread edge and a radial direction distance from the equatorial point to a virtual tread edge on a line extending from the first arc portion is equal to or higher than 0.5 or lower than 1.0.
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公开(公告)号：US10787036B2
公开(公告)日：2020-09-29
申请号：US15595090
申请日：2017-05-15
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Yoshiki Kanaya , Ikuo Atake , Shuji Kagimoto
Abstract: A heavy-duty tire includes a tread part formed such that the tread part includes a crown profile including tire equator, and a pair of shoulder profiles extending from outer sides of the crown profile to tread edges. In a tire cross section including tire rotation axis in 5% internal pressure state in which the tire is mounted to a normal rim, filled with air at internal pressure of 5% of normal internal pressure and loaded with no load, each of the crown and shoulder profiles has an arc shape convex toward tire radial direction outer side such that ratio Rc/Rs of curvature radius Re of the crown profile to curvature radius Rs of each shoulder profile is 7.0 or more, and a tire axial direction distance from the equator to a connecting point between the crown profile and each shoulder profile is 0.70 or more times a tread half width.
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