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公开(公告)号：US20200148007A1
公开(公告)日：2020-05-14
申请号：US16740565
申请日：2020-01-13
摘要： Provided is a motorcycle pneumatic tire in which the wet grip performance is improved while the steering stability during turning is ensured. The motorcycle pneumatic tire includes, on its ground-contact surface: a first inclined groove (21) that extends on a tire width-direction outer side from the vicinity of a tire equator and is inclined in the same direction as a tire rotation direction; and a short groove (22) that is arranged on the extension of a tire width-direction outer end of the first inclined groove (21). The tire width-direction outer end of the first inclined groove is positioned in the vicinity of a point at ¼ of a tread width (TW) from the tire equator on the tire width-direction outer side, while a tire width-direction inner end of the short groove is positioned in a range of ¼ to 5/16 of the tread width (TW) from the tire equator on the tire width-direction outer side; an inclination angle of the first inclined groove with respect to a tire circumferential direction increases toward the tire width-direction outer side; and an angle θA formed by a groove wall of the tire width-direction outer end of the first inclined groove with respect to the direction perpendicular to the tire surface, and an angle θB formed by a groove wall of the tire width-direction inner end of the short groove with respect to the direction perpendicular to the tire surface, satisfy a relationship of θA>θB.
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公开(公告)号：US20180304696A1
公开(公告)日：2018-10-25
申请号：US15769206
申请日：2016-10-28
CPC分类号： B60C11/24 , B60C11/0302 , B60C11/04 , B60C11/1204 , B60C11/1281 , B60C2011/0348 , B60C2011/0351 , B60C2011/0353 , B60C2011/0355 , B60C2011/0358 , B60C2011/0381 , B60C2011/1209 , B60C2011/1213 , B60C2011/1227 , B60C2011/1231 , B60C2200/10
摘要： Provided is a pneumatic tire for a motorcycle that is capable of early exhibiting performance of a new tire and that enables it to be visually confirmed that the new tire is worn to a degree that the tire can fully exhibit the performance. The pneumatic tire for a motorcycle includes a tread portion 1 formed into a ring shape, in which the tread portion 1 is provided with shallow grooves 2 having a width of 0.1 to 2.0 mm and a depth of 0.1 to 2.0 mm and extending in a tire circumferential direction.
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公开(公告)号：US20180319218A1
公开(公告)日：2018-11-08
申请号：US15770246
申请日：2016-10-28
CPC分类号： B60C11/033 , B60C11/01 , B60C11/0302 , B60C11/0332 , B60C11/1236 , B60C11/24 , B60C2011/013 , B60C2011/0358 , B60C2011/036 , B60C2011/0362 , B60C2011/0372 , B60C2011/0374 , B60C2011/0381 , B60C2200/10
摘要： Provided is a pneumatic tire for motorcycles which can exhibit a performance of a new tire at an early period and enables visual confirmation that the tire as new is worn to such an extent as to be capable of sufficiently exhibiting its performance. The pneumatic tire for motorcycles includes a tread portion 10 formed into a ring shape, in which the tread portion 10 is provided with a width direction shallow groove 11b in which the shallow groove having a width of 0.1 to 2.0 mm and a depth of 0.1 to 2.0 mm is designed to extend at least in a tire width direction. A length of the width direction shallow groove 11b is greater than or equal to 50% of a width of a tire ground contact surface, and the width direction shallow groove 11b is provided at intervals which are shorter than a length of the tire ground contact surface.
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公开(公告)号：US20200148006A1
公开(公告)日：2020-05-14
申请号：US16740726
申请日：2020-01-13
IPC分类号： B60C11/00
摘要： Provided is a motorcycle pneumatic tire in which the wet grip performance during turning is improved while the steering stability during turning is ensured. In this motorcycle pneumatic tire, a tread portion is composed of a central rubber and a side rubber having a lower modulus than the central rubber and has a structure in which the central rubber and the side rubber are sequentially laminated in both tire widthwise side portions, with the side rubber extending to a tire width-direction inner side further than a point at ¼ of a tread width TW on a tire width-direction outer side from a tire equator. A tire ground-contact surface has a tread pattern that includes plural inclined grooves 21 to 25 and, when the tread width is equally divided in eight, among the thus equally-divided eight regions, a region C constituting a range of ¼ to ⅜ of the tread width on the tire width-direction outer side from the tire equator has the largest number of inclined grooves included per a single pitch of the tread pattern, and the depth of the inclined grooves is greater than the thickness of the side rubber in at least a part of the region C.
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公开(公告)号：US20170291455A1
公开(公告)日：2017-10-12
申请号：US15514132
申请日：2015-06-08
摘要： Provided is a motorcycle tire having improved wet performance during straight running without compromising other performances. The motorcycle tire is a motorcycle tire whose rotation direction when mounted on a vehicle is designated. A main groove (10) at least including a first groove (11) and a second groove (12) having different inclination directions, and a sub groove (20) are provided on a tire tread, the main groove and the sub groove are alternately repeatedly formed in the tire circumferential direction line symmetrically with respect to the tire equator and are arranged offset in the tire circumferential direction between one side and the other side in the tire width direction, and the main groove and the sub groove include, per one pitch of pattern on one side in the tire width direction within the contact region S during straight running, two or more outward grooves extending obliquely from the tire equator side to the outside in the tire width direction toward the designated reverse rotation direction of the rotation direction and one or more inward grooves extending obliquely from the outside in the tire width direction to the tire equator side toward the designated reverse rotation direction of the rotation direction.
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