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公开(公告)号：US20140305563A1
公开(公告)日：2014-10-16
申请号：US14223112
申请日：2014-03-24
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Tomoyuki KUJIME
IPC: B60C11/12
CPC classification number: B60C11/1236 , B60C11/0304 , B60C11/04 , B60C11/1204 , B60C2011/0358 , B60C2011/0381 , B60C2011/0383 , B60C2011/0388 , B60C2011/1209 , B60C2011/129 , B60C2011/1295
Abstract: A middle land portion includes middle sipes and middle lateral grooves. A shoulder land portion includes shoulder lateral grooves and shoulder sipes. A ratio Ems/Ema is smaller than a ratio Ess/Esa. Ems denotes a total of elements of edge lengths of the middle sipes in an axial direction of the tire. Ema denotes a total of elements of edge lengths of the middle sipes and the middle lateral grooves in the axial direction. Ess denotes a total of elements of edge lengths of the shoulder sipes in the axial direction. Esa denotes a total of elements of edge lengths of the shoulder sipes and the shoulder lateral grooves in the axial direction.
Abstract translation: 中间部分包括中间刀槽花纹和中间横向槽。 台肩部分包括肩部横向槽和肩部刀槽花纹。 Ems / Ema的比例小于Ess / Esa的比率。 Ems表示轮胎的轴向方向上的中间刀槽花纹的边缘长度的总和。 Ema表示中间刀槽花纹和中间横向槽沿轴向的边缘长度的总和。 Ess表示轴向方向上肩刀槽花纹的边缘长度的总和。 Esa表示轴向方向上的肩部刀槽花纹和肩部横向槽的边缘长度的总和。
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公开(公告)号：US20130014871A1
公开(公告)日：2013-01-17
申请号：US13182788
申请日：2011-07-14
Applicant: Francois Pierre Charles Gerard Georges , Didier Winkin , Lothar Braun , Frank Pierre Severens , Claude Pierre Georges , Vincent Benoit Mathonet , Daniel Scheuren
Inventor： Francois Pierre Charles Gerard Georges , Didier Winkin , Lothar Braun , Frank Pierre Severens , Claude Pierre Georges , Vincent Benoit Mathonet , Daniel Scheuren
IPC: B60C11/12
CPC classification number: B60C11/0323 , B60C11/0306 , B60C11/04 , B60C11/1204 , B60C11/1281 , B60C2011/1209
Abstract: A tread for a pneumatic tire includes a first circumferentially continuous groove, a second circumferentially continuous groove, a central rib interposed between the two circumferentially continuous grooves and extending continuously around a circumference of the tread, a first circumferentially extending shoulder rib disposed laterally outside of the first circumferentially continuous groove, and a second circumferentially extending shoulder rib disposed laterally outside of the second circumferentially continuous groove. The central rib has a plurality of circumferentially spaced sipes arranged in a first circumferential row and a second circumferential row. The sipes of the first row originate at the first circumferentially continuous groove and the sipes of the second row originate at the second circumferentially continuous groove. The sipes of both the first and second rows extend axially inward to a circumferentially extending and continuous variable center groove. The variable center groove has a minimum circumferentially extending opening at a radially outermost portion. As the tread wears and the radially outermost portion of the tread moves radially inward, the circumferentially extending opening of the variable center groove widens to a maximum circumferentially extending opening greater than the minimum circumferentially extending opening.
Abstract translation: 用于充气轮胎的胎面包括第一周向连续的槽，第二周向连续的槽，插入在两个周向连续的槽之间并围绕胎面的圆周连续延伸的中心肋，第一周向延伸的肩肋， 第一周向连续的槽，以及设置在第二周向连续槽的横向外侧的第二周向延伸的肩肋。 中央肋具有布置在第一圆周排和第二圆周排中的多个周向间隔开的刀槽花纹。 第一列的刀槽花纹起始于第一周向连续的槽，并且第二列的刀槽花纹起始于第二周向连续的槽。 第一和第二列的刀槽花纹沿轴向向内延伸到周向延伸和连续的可变中心槽。 可变中心槽在径向最外侧部分具有最小的周向延伸开口。 当胎面磨损并且胎面的径向最外部部分径向向内移动时，可变中心槽的周向延伸的开口变宽到大于最小周向延伸开口的最大周向延伸的开口。
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公开(公告)号：US12083830B2
公开(公告)日：2024-09-10
申请号：US16919491
申请日：2020-07-02
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Koki Nagasawa
CPC classification number: B60C11/1236 , B60C11/1204 , B60C2011/0372 , B60C2011/1245
Abstract: A tire includes a tread portion including a first land region defined by main grooves. The first land region includes a first longitudinal edge and a second longitudinal edge, and a ground contacting surface defined between the first longitudinal edge and the second longitudinal edge. The first land region is provided with two first grooves and a second groove. Each of the first grooves extends so as to connect the first longitudinal edge and the second longitudinal edge. The second groove extends so as to connect the first longitudinal edge and the second longitudinal edge while intersecting with each of the two first grooves. The second groove is not connected with other grooves than the first grooves in the ground contacting surface.
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公开(公告)号：US12054009B2
公开(公告)日：2024-08-06
申请号：US18172934
申请日：2023-02-22
Applicant: NOKIAN RENKAAT OYJ
Inventor： Mikko Jokinen
CPC classification number: B60C11/1204 , B60C11/0302 , B60C11/0306 , B60C11/1218 , B60C11/1281 , B29D2030/0613 , B60C2011/1213
Abstract: A tread block arrangement is for a tire or for a tread band for a tire. The tread block arrangement includes a tread block having at least a first sipe delimited by a first sipe wall, a second sipe wall and a bottom of the sipe. The first sipe wall and the second sipe wall are arranged parallel to each other and define a width (w) of the sipe. At least the first sipe wall has at least one inclined section in which a width of a surface of the first sipe wall in a longitudinal direction of the sipe and the width of the sipe increases towards the bottom of the sipe.
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公开(公告)号：US20240198731A1
公开(公告)日：2024-06-20
申请号：US18534823
申请日：2023-12-11
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Takayuki NAMERA , Yuto HASHIMOTO , Sho NAKAJIMA , Ryuhei SANAE
CPC classification number: B60C11/0306 , B60C11/1204 , B60C2011/1213
Abstract: A tire comprises a tread portion provided with blocks including a first block provided with a plurality of sipes. Each sipe comprises a zigzag portion in a cross section perpendicular to the sipe length direction, and a zigzag portion in a cross section parallel to the ground contacting top surface of the first block. Each of the sipes is provided with at least one tie bar protruding radially outwardly from the bottom of the sipe and terminating without reaching the ground contacting top surface. The sipes includes a first sipe having the tie bar at a first position in the tire axial direction, and a second sipe having the tie bar at a second position in the tire axial direction different from the first position.
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Patent Agency Ranking
公开(公告)号：US11958318B2
公开(公告)日：2024-04-16
申请号：US15990543
申请日：2018-05-25
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Haruna Mizushima
CPC classification number: B60C11/0306 , B60C11/01 , B60C11/0332 , B60C11/1204 , B60C11/1218 , B60C11/1236 , B60C2011/0346 , B60C2011/0348 , B60C2011/036 , B60C2011/0365 , B60C2011/0372 , B60C2011/0381 , B60C2011/0393 , B60C2011/1209 , B60C2011/1213
Abstract: A tread portion of a pneumatic tire includes a pair of first main grooves extending in a tire circumferential direction formed at a position on either outer side in the tire lateral direction of a first land portion including a tire equatorial plane; a pair of second main grooves extending in the tire circumferential direction formed at a position outward from the first main grooves in the tire lateral direction; and first lug grooves formed in a second land portion between the first main grooves and the second main grooves, the first lug grooves opening to one of the first main grooves at one end and opening to one of the second main grooves at an other end. The first lug grooves have a groove width of 2 mm or greater and have the same inclination direction in the tire lateral direction with respect to the tire circumferential direction.
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公开(公告)号：US20240109374A1
公开(公告)日：2024-04-04
申请号：US18264579
申请日：2021-11-05
Applicant: BRIDGESTONE CORPORATION
Inventor： Mayuko KARASAWA , Shungo FUJITA , Kai YAMADA
CPC classification number: B60C11/1236 , B60C11/0306 , B60C11/1204 , B60C2011/1213 , B60C2011/129
Abstract: A pneumatic tire including a center block row 21 provided in a center area of a tread surface 1, wherein the center block row includes a plurality of center blocks 210 arranged along a tire circumferential direction, the plurality of center blocks includes a plurality of first center blocks 211 and a plurality of second center blocks 212, the plurality of first center blocks and the plurality of second center blocks have polygonal shapes on the tread surface, the polygonal shape formed by each second center block has a same number of sides as, but a different shape than, the polygonal shape formed by each first center block, each first center block and each second center block has one or more sipes, and a number n of sipes included in each second center block is greater than a number m of sipes included in each first center block.
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公开(公告)号：US11890897B2
公开(公告)日：2024-02-06
申请号：US17042041
申请日：2019-03-26
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Toyoaki Endo
CPC classification number: B60C11/0304 , B60C11/124 , B60C11/1204 , B60C11/1218 , B60C11/1236 , B60C11/13 , B60C11/1369 , B60C11/1376 , B60C2011/0367 , B60C2011/0383 , B60C2011/1245
Abstract: A tread pattern of a pneumatic tire includes circumferential main grooves, a land portion defined by the circumferential main grooves in the lateral direction, and sipes at intervals in a circumferential direction, the sipes connecting the circumferential main grooves with each other. Each of the sipes has a peak-like shape protruding to a first side in the circumferential direction. When, in a profile cross-section of the tread portion taken along the lateral direction, an arc passing through two land portion edge points at which a tread surface of the land portion is connected with groove wall surfaces of the circumferential main grooves and having a center point positioned on the equator line is set to a standard profile line, a profile line formed by the tread surface of the land portion is a swelling profile line protruding outward of the standard profile line in a radial direction.
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公开(公告)号：US11884106B2
公开(公告)日：2024-01-30
申请号：US16649313
申请日：2018-09-25
Inventor： Franck Nugier , Valérie Feuardent
CPC classification number: B60C11/005 , B60C11/04 , B60C11/1204 , B60C11/1218 , B60C11/1263 , B60C11/1281 , B60C2011/0025 , B60C2011/1213 , B60C2200/14
Abstract: Tire (1) for an off-road vehicle, comprising a crown and a tread (22) having a width W and a thickness E of wearable material, this tread (22) having a superposition of at least two layers of materials, a first layer (221) radially on the inside and a second layer (222) radially on the outside of the first layer (221) to contact the ground when the tire is new, this second layer (222) having a thickness E2 relative to the thickness E of wearable material, the tread (22) being provided with at least two narrow grooves (4, 5) running all around the tire which have a zigzagging shape of wavelength L and amplitude A, the wavelength L being between 10% and 120% of the axial width W of the tread (22), and the amplitude A being between 10% and 75% of axial width W. The material of the first layer (221) is chosen with low hysteresis; with a measured tan(δ) value at most equal to 0.30.
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公开(公告)号：US11878554B2
公开(公告)日：2024-01-23
申请号：US17131177
申请日：2020-12-22
Applicant: Sumitomo Rubber Industries, Ltd.
Inventor： Takashi Okada , Saori Yoshida , Shunta Kokatsu
CPC classification number: B60C11/1204 , B60C11/0304 , B60C11/1236 , B60C11/1263 , B60C11/1272 , B60C11/1281 , B60C2011/0341 , B60C2011/1227 , B60C2011/1268 , B60C2011/1295
Abstract: A tyre includes a crown land portion, an outboard middle land portion, an outboard shoulder land portion, an outboard crown circumferential groove, an outboard shoulder circumferential groove, an inboard middle land portion, an inboard shoulder land portion, an inboard crown circumferential groove, and an inboard shoulder circumferential groove. The outboard middle land portion is provided with full-opened outboard middle sipe that are inclined to a tyre axial direction. The outboard middle sipes each have two opposite sipe-edge portions provided with chamfer portions. In each chamfer portion of each outboard middle sipe, chamfer widths at both ends of the outboard middle sipe are larger than a chamfer width of a central portion of the outboard middle sipe. The outboard shoulder land portion is provided with outboard shoulder sipes that are inclined in the same direction as the outboard middle sipes to the tyre axial direction.
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