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公开(公告)号：US20240308276A1
公开(公告)日：2024-09-19
申请号：US18675955
申请日：2024-05-28
申请人： PIRELLI TYRE S.P.A.
CPC分类号： B60C11/033 , B60C11/0304 , B60C11/0306 , B60C11/1392 , B60C11/0318 , B60C2011/0341 , B60C2011/0348 , B60C2011/0353 , B60C2011/0355 , B60C2011/036 , B60C2011/0365
摘要： A tyre having a tread is described. The tyre has a central portion located across an equatorial plane, a first shoulder portion located towards an outer side of the tyre and a second shoulder portion located towards an inner side of the tyre. The central portion is separated from the first shoulder portion by two first circumferential grooves. The first shoulder portion and the second shoulder portion have a plurality of first transverse grooves having a first end located substantially at the respective edge of the tread, having a width greater than or equal to about 4 mm and an axial extension equal to at least 50% of the width of the shoulder portion in which they are located.
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公开(公告)号：US12036820B2
公开(公告)日：2024-07-16
申请号：US17577323
申请日：2022-01-17
发明人： Mina Takata
CPC分类号： B60C11/1236 , B60C9/18 , B60C11/03 , B60C11/0306 , B60C11/12 , B60C11/1204 , B60C11/1259 , B60C11/1272 , B60C11/1384 , B60C2011/0348 , B60C2011/036 , B60C2011/1245 , B60C2200/06
摘要： A pneumatic tire includes circumferential grooves aligned in a lateral direction and extending in a circumferential direction, lateral grooves aligned in the circumferential direction and extending to cross the circumferential direction, communicating at ends with the circumferential grooves and defining a block-shaped land portion between the circumferential grooves, two narrow grooves aligned in the lateral direction and extending in the circumferential direction, communicating at ends with a lateral groove and dividing the land portion defined by each of the circumferential grooves and each of the lateral grooves into small land portions, the narrow grooves having a smaller groove width than the circumferential grooves and being formed with a bent portion in an intermediate portion, the bent portion being disposed inward in the lateral direction, and bend points of the bent portions being disposed at positions offset from one another in the circumferential direction.
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公开(公告)号：US11987077B2
公开(公告)日：2024-05-21
申请号：US15990545
申请日：2018-05-25
发明人： Haruna Mizushima
CPC分类号： B60C11/0306 , B60C11/0309 , B60C11/0332 , B60C11/12 , B60C11/1204 , B60C11/1218 , B60C11/1236 , B60C2011/0346 , B60C2011/0348 , B60C2011/036 , B60C2011/0365 , B60C2011/0369 , B60C2011/0381 , B60C2011/0393 , B60C2011/1209 , B60C2011/1213
摘要： A pneumatic tire includes first main grooves formed on outer sides, in the lateral direction, of a first land including an equatorial plane and extending in the circumferential direction; second main grooves outside, in the lateral direction, of the first main grooves and extending in the circumferential direction; auxiliary grooves formed on second lands between the first main grooves and the second main grooves, opening to the second main grooves, and terminating in the second lands; and first sipes inclined identically to the auxiliary grooves and crossing the second lands. The auxiliary grooves are formed into a shape bending at a bend point, and include a first portion extending from an opening end to the bend point, and a second portion extending from the bend point to a terminating end. A groove width of the first portion gradually reduces from the opening end to the bend point.
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公开(公告)号：US11897291B2
公开(公告)日：2024-02-13
申请号：US17855076
申请日：2022-06-30
发明人： Ryouichi Tomomatsu
CPC分类号： B60C11/1307 , B60C11/0302 , B60C11/0304 , B60C2011/0346 , B60C2011/0348 , B60C2011/0353
摘要： A tread pattern of a pneumatic tire includes one center continuous land portion and two intermediate continuous land portions that are divided by four circumferential main grooves and that are not provided with lug grooves. Edges on both sides of one center main groove include groove chamfered portions having a chamfered width changing in the circumferential direction in a zigzag shape. In the regions of the intermediate continuous land portions, first sipes extending inward in the lateral direction from shoulder main grooves of the main grooves, which are positioned on outer sides in the lateral direction, are provided. The first sipes each include a sipe main body portion having a constant distance between sipe wall surfaces on a sipe bottom side and a sipe chamfered portion inclined so that the sipe wall surfaces are open toward the tread surface.
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公开(公告)号：US11827060B2
公开(公告)日：2023-11-28
申请号：US17254084
申请日：2019-04-24
发明人： Masakazu Sakamoto , Tomoo Hasegawa , Hiroaki Ebata
CPC分类号： B60C11/1392 , B60C2011/0344 , B60C2011/0348 , B60C2011/0358 , B60C2011/0365 , B60C2011/133 , B60C2200/06 , B60C2200/065
摘要： A heavy load tire includes: a plurality of circumferential grooves extending along a tire circumferential direction; a plurality of lateral grooves extending along a tire width direction and formed in a direction crossing the circumferential grooves; and a plurality of blocks partitioned by the circumferential grooves and the lateral grooves. On a whole surface of one end portion in the tire circumferential direction of a center block formed in a center area among the plurality of blocks, an inclined portion inclined inward in a tire radial direction toward the end portion is formed.
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公开(公告)号：US11685195B2
公开(公告)日：2023-06-27
申请号：US16763961
申请日：2018-11-15
发明人： Ryouichi Tomomatsu
CPC分类号： B60C11/1281 , B60C11/1204 , B60C11/1259 , B60C11/0304 , B60C2011/0341 , B60C2011/0348 , B60C2011/0381 , B60C2011/1254
摘要： A tread pattern of a pneumatic tire includes continuous lands provided in half treads on first and second sides, circumferential main grooves, and sipes having a chamfered configuration. The sipes extend inward in a lateral direction from the circumferential main grooves and are closed in the middle of regions of the continuous lands. An edge shape of each of sipes on the first side includes an extending portion extending inward in the lateral direction constantly in an extension direction and a bent portion that is provided to be joined to an end of the first extending portion and that has the edge shape bent from the extension direction of the first extending portion to a direction close to the circumferential direction. Every portion of the first extending portion and the bent portion of the sipes are provided with a main body portion and a sipe chamfered portion.
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公开(公告)号：US11654720B2
公开(公告)日：2023-05-23
申请号：US16945209
申请日：2020-07-31
发明人： Hidetoshi Taniguchi
CPC分类号： B60C11/01 , B60C11/1315 , B60C11/04 , B60C2011/0348 , B60C2011/0397
摘要： A tire comprises a tread portion whose shoulder land part is provided with a narrow circumferential groove having an axially inner wall surface, an axially outer wall surface and a groove bottom including a deepest point. The axially inner wall surface has a radially inner curved portion concaved toward the axially inside, and the axially outer wall surface has a radially inner curved portion concaved toward the axially outside. the radially outer end of the radially inner curved portion of the axially inner wall surface is positioned radially inside the radially outer end of the radially inner curved portion of the axially outer wall surface.
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公开(公告)号：US20190248191A1
公开(公告)日：2019-08-15
申请号：US16330953
申请日：2017-08-30
发明人： MATHIEU GRECO , PATRICE NOTIN
CPC分类号： B60C19/002 , B60C3/06 , B60C11/0304 , B60C2011/0348
摘要： In the field of tire production, the invention relates to a tire for a vehicle, the tire (300) including a summit having a tread (312) with asymmetric tread elements for contacting the ground, and the tire (300) being provided with a sealed inner liner that defines a tire cavity when the tire is mounted on a mounting rim, wherein a first noise damper (330) is circumferentially affixed to an inner surface (300a) facing the cavity of the tire (300), the first noise damper (330) being positioned in the cavity of the tire (300) toward an outer side of the tire (300) and being off-center with respect to a median plane (C300) of the tire (300).
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公开(公告)号：US10071601B2
公开(公告)日：2018-09-11
申请号：US14920372
申请日：2015-10-22
发明人： Dai Kurosawa , Takuya Sato
CPC分类号： B60C11/1236 , B60C11/0306 , B60C11/13 , B60C2011/0344 , B60C2011/0346 , B60C2011/0348 , B60C2011/0372 , B60C2011/0374 , B60C2011/0395 , B60C2011/1213 , B60C2011/1254
摘要： Each shoulder land region 4E defined by a shoulder circumferential main groove 3E is provided with a circumferential narrow groove 20 and axially inner and outer shoulder oblique grooves 22 and 21 extending therefrom. The axially outer shoulder oblique grooves 21 are inclined with respect to the tire axial direction to one direction. The axially inner shoulder oblique grooves 22 are inclined with respect to the tire axial direction to one direction opposite to that of the axially outer shoulder oblique grooves 21. Crown oblique grooves 8 are inclined with respect to the tire axial direction to one direction same as that of the axially outer shoulder oblique grooves 21. Imaginary extensions 21K of the axially outer shoulder oblique grooves 21 are not overlapped with openings Q1 of the axially inner shoulder oblique grooves 22 at the circumferential narrow groove 20. Imaginary extensions 22K of the axially inner shoulder oblique grooves 22 are not overlapped with openings Q2 of the crown oblique grooves 8 at the shoulder circumferential main groove 3E, and are not overlapped with openings Q3 of the axially outer shoulder oblique grooves 21 at the circumferential narrow groove 20. Imaginary extensions 8K of the crown oblique grooves 8 are not overlapped with openings Q4 of the axially inner shoulder oblique grooves 22 at the shoulder circumferential main groove 3E.
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公开(公告)号：US10059151B2
公开(公告)日：2018-08-28
申请号：US15110035
申请日：2014-12-12
发明人： Kenji Araki
IPC分类号： B60C11/03
CPC分类号： B60C11/0311 , B60C2011/0346 , B60C2011/0348 , B60C2011/0351 , B60C2011/0353 , B60C2011/0355 , B60C2011/0365 , B60C2011/0367 , B60C2200/065
摘要： A heavy-duty pneumatic tire having block land portions in a tread surface can reduce the tire circumferential shearing strain and heat generation in the tread portion to prevent the separation failure between the tread rubber and the belt more effectively. A heavy-duty pneumatic tire has, in a tread surface, blocks defined by a plurality of circumferential main grooves each continuously extending in a tire circumferential direction and a plurality of transverse grooves each communicating between circumferential main grooves adjacent in a tire width direction, wherein in a tire widthwise area that centers on a tire equator and whose width in the tire width direction is 50% of a tread width: at least one of the blocks has a block partitioning groove that is open to each of transverse grooves defining the block and is shallower than the circumferential main grooves, to divide the block into a plurality of small blocks; and at least one of the small blocks has a block auxiliary groove that is open to the block partitioning groove at one end and open to a corresponding circumferential main groove or transverse groove at an other end and is shallower than the circumferential main grooves.
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