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公开(公告)号：US10144250B2
公开(公告)日：2018-12-04
申请号：US14825347
申请日：2015-08-13
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Kae Matsuda , Atsushi Maehara , Shuji Kagimoto
Abstract: A heavy duty pneumatic tire comprises a tread portion provided with circumferentially continuously extending main grooves and axial grooves connecting between the main grooves to form blocks. The main grooves include a zigzag crown main groove disposed on each side of the tire equator, and a zigzag shoulder main groove disposed axially outside each crown main groove, wherein the groove width of the crown main groove is less than the groove width of the shoulder main groove. The axial grooves include crown axial grooves circumferentially dividing crown blocks disposed between the crown main grooves and each having a substantially hexagonal tread, and middle axial grooves circumferentially dividing middle blocks disposed between each crown main groove and the adjacent shoulder main groove and each having a substantially hexagonal tread, wherein the groove width of the middle axial grooves is more than the groove width of the crown axial grooves.
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公开(公告)号：US09315075B2
公开(公告)日：2016-04-19
申请号：US13793641
申请日：2013-03-11
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Atsushi Maehara
CPC classification number: B60C11/03 , B60C11/0306 , B60C11/0309 , B60C11/033 , B60C2011/0353 , B60C2011/0355 , B60C2011/036 , B60C2011/0365 , B60C2011/0367 , B60C2011/0372 , B60C2200/04 , B60C2200/06 , Y02T10/862
Abstract: A pneumatic tire comprises a tread portion with a land ratio of from 75% to 80%, the tread portion provided with crown main grooves having groove widths of 2.0-8.0 mm and groove depths of 15.0-20.0 mm, shoulder main grooves having groove widths of from 8.0-14.0 mm and groove depths of from 15.0-20.0 mm and lateral narrow grooves with groove widths of 0.6-2.0 mm and groove depths of 15.0-20.0 mm, wherein each main groove has a cross section including a groove bottom and groove walls, each groove wall includes an inner part and an outer part, the inner part has an inclination of not more than 1 degree with respect to a groove centerline, and the outer part has an inclination larger than that of the inner part.
Abstract translation: 一种充气轮胎，其特征在于，具有：胎面部，所述胎面部分具有75％〜80％的胎面部，所述胎面部具有槽宽度为2.0〜8.0mm，槽深度为15.0〜20.0mm的胎冠主槽， 为8.0-14.0mm，槽深度为15.0-20.0mm，槽宽度为0.6-2.0mm，槽深度为15.0-20.0mm的横向窄槽，其中每个主槽具有包括槽底和槽的横截面 每个槽壁包括内部部分和外部部分，内部部分相对于槽中心线具有不大于1度的倾斜度，并且外部部分具有大于内部部分的倾斜度。
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公开(公告)号：US11046122B2
公开(公告)日：2021-06-29
申请号：US15789734
申请日：2017-10-20
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Atsushi Maehara
Abstract: A tire includes a tread portion provided with a plurality of blocks. At least one of the plurality of blocks is provided with a sipe. The sipe extends in a sipe longitudinal direction to form a zigzag opening configuration on a ground contact surface of the at least one of the plurality of blocks. The sipe extends inwardly in a tire radial direction such that the zigzag opening configuration oscillates in the sipe longitudinal direction repeatedly with a total amplitude and a wavelength while maintaining the zigzag opening configuration. A half of the wavelength of the sipe is in a range of from 0.10 to 0.24 times a maximum depth of the sipe, and a slope of the half of the wavelength with respect to the total amplitude has an angle in a range of from 45 to 65 degrees.
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公开(公告)号：US11685194B2
公开(公告)日：2023-06-27
申请号：US17330885
申请日：2021-05-26
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Atsushi Maehara
CPC classification number: B60C11/1218 , B60C11/0306 , B60C11/11 , B60C11/12 , B60C11/125 , B60C11/1236 , B60C2011/0346 , B60C2011/0353 , B60C2011/0355 , B60C2011/0367 , B60C2011/1213 , B60C2200/06
Abstract: A tire includes a tread portion provided with a plurality of blocks. At least one of the plurality of blocks is provided with a sipe. The sipe extends in a sipe longitudinal direction to form a zigzag opening configuration on a ground contact surface of the at least one of the plurality of blocks. The sipe extends inwardly in a tire radial direction such that the zigzag opening configuration oscillates in the sipe longitudinal direction repeatedly with a total amplitude and a wavelength while maintaining the zigzag opening configuration. A half of the wavelength of the sipe is in a range of from 0.10 to 0.24 times a maximum depth of the sipe, and a slope of the half of the wavelength with respect to the total amplitude has an angle in a range of from 45 to 65 degrees.
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公开(公告)号：US10343461B2
公开(公告)日：2019-07-09
申请号：US14923694
申请日：2015-10-27
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Atsushi Maehara
Abstract: A heavy duty pneumatic tire includes a tread including a pair of central portions, a pair of middle portions and a pair of shoulder portions, wherein each of the portions has an axial width varying periodically while increasing and decreasing in a circumferential direction of the tire. Each of the central portions includes a central block with a hexagonal shaped top face and a central sipe. A total that is the sum of each maximum axial width of the central portions, each maximum axial width of the middle portions, each maximum axial width of the shoulder portions, a maximum axial length of the central sipe provided on one of the central portions, and a maximum axial length of the central sipe provided on the other one of the central portions is in a range of from 1.05 to 1.31 times a tread width.
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Patent Agency Ranking
公开(公告)号：US10124628B2
公开(公告)日：2018-11-13
申请号：US14975092
申请日：2015-12-18
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Naofumi Kitani , Atsushi Maehara
Abstract: A heavy duty pneumatic tire 1 comprises a tread portion 2 provided with a crown land portion 6 formed between a center main groove 3 and a middle main groove 4 and having an axial width varying periodically in the tire circumferential direction. The center main groove 3 comprises first oblique groove segments 3A inclined with respect to the tire circumferential direction to one axial direction at an angle, and second oblique groove segments 3B inclined with respect to the tire circumferential direction to the other axial direction at an angle less than the angle of the first oblique groove segments. The crown land portion 6 is divided into hexagonal crown blocks 11 by crown lateral grooves 9 extending between axially inwardly protruding zigzag vertex portions of the center main groove 3 and axially outwardly protruding zigzag vertex portions of the middle main groove 4. The crown lateral grooves 9 and the first oblique groove segments 3A are inclined with respect to the tire axial direction to one circumferential direction.
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公开(公告)号：USD848936S1
公开(公告)日：2019-05-21
申请号：US29604063
申请日：2017-05-15
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Designer： Atsushi Maehara
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公开(公告)号：US11198329B2
公开(公告)日：2021-12-14
申请号：US15891020
申请日：2018-02-07
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Atsushi Maehara
Abstract: A heavy-duty tire includes a tread portion including a crown land portion, a shoulder land portion with a tread edge and a middle land portion disposed therebetween. In a tire cross-section of a 5% inflated state, the tread portion comprises a surface profile which comprises an inner arc portion having a radius (R1) of curvature with a center located in a tire equatorial plane and an outer arc portion having a radius (R2) of curvature smaller than the radius (R1) of curvature of the inner arc portion and intersecting the inner arc portion at an inflection point (P). The inflection point (P) is located on the middle land portion, wherein a distance (Lp) in the tire axial direction from the tire equatorial plane to the inflection point (P) is in a range of from 0.35 to 0.50 times a tread half-width (Wt).
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公开(公告)号：US10654320B2
公开(公告)日：2020-05-19
申请号：US15440005
申请日：2017-02-23
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Atsushi Maehara
Abstract: A tire includes a tread having a crown main groove and shoulder main grooves extending in the tire circumferential direction. The crown groove has crown long side portions and crown short side portions inclined in the opposite directions and alternately formed in a zigzag shape extending in the tire circumferential direction, the shoulder main grooves have shoulder long side portions and shoulder short side portions inclined in the opposite directions and alternately formed in a zigzag shape extending in the tire circumferential direction, the crown main groove and shoulder main grooves are formed such that a crown long-short ratio La/Lb is larger than a shoulder long-short ratio Lc/Ld, where La is a length of each crown long side portion, Lb is a length of each crown short side portion, Lc is a length of each shoulder long side portion, and Ld is a length of each shoulder short side portion.
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公开(公告)号：US10471778B2
公开(公告)日：2019-11-12
申请号：US14786385
申请日：2014-02-27
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Atsushi Maehara
Abstract: To provide a pneumatic tire capable of improving the rolling performance, low noise performance and wear resistance performance while maintaining the wet performance.It is a pneumatic tire (1) provided in the tread portion (2) with a plurality of main grooves (3). The main groove (3) has, in a cross-section perpendicular to the longitudinal direction of the groove, a first groove bottom (3A) and a pair of first groove walls (3B, 3B) extending smoothly from the first groove bottom (3A) to the tread surface (S). In the main groove (3), the width (W1) between the first groove walls (3B) is 2.0 to 20.0 mm at a tread surface (S), and the depth (D) from the tread surface (S) to the first groove bottom (3A) is 10.0 mm or more. In the first wall (3B), the ratio (W1/α) of the angle (α) [degree] with respect to a normal direction to the tread surface (S) and the width (W1) [mm] is in a range of 1.0 to 2.0 [mm/degree].
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