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公开(公告)号：US20240270022A1
公开(公告)日：2024-08-15
申请号：US18563546
申请日：2022-03-28
Applicant: BRIDGESTONE CORPORATION
Inventor： Ietomo MATSUNAGA , Isao KUWAYAMA
CPC classification number: B60C9/22 , B60C11/0304 , B60C2011/0339
Abstract: A pneumatic tire comprises a tread in contact with a road surface and a pair of inclined belts with crossing cords. A volume of the groove portion formed on the tread of inside when mounted to the vehicle based on a tire equatorial line being less than volume of the groove portion formed on the tread of outside when mounted to the vehicle based on the tire equatorial line, and the pneumatic tire is provided with a reinforcing belt covering a plurality of reinforcing cords extending in the tire width direction and along tire radial direction and arranged at a predetermined distance between the inclined belts and the tread. The reinforcing belt extends from the outside when mounted to the vehicle to the inside when mounted to the vehicle.
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公开(公告)号：US20240253398A1
公开(公告)日：2024-08-01
申请号：US18290504
申请日：2022-03-28
Applicant: BRIDGESTONE CORPORATION
Inventor： Ietomo MATSUNAGA , Isao KUWAYAMA
Abstract: A pneumatic tire comprises a tread in contact with a road surface and a pair of inclined belts with crossing cords. A volume of the groove portion formed on the tread of outside when mounted to the vehicle based on a tire equatorial line being less than volume of the groove portion formed on the tread of inside when mounted to the vehicle based on the tire equatorial line, and the pneumatic tire is provided with a reinforcing belt covering a plurality of covering cords extending in the tire width direction and along tire radial direction and arranged at a predetermined distance between the inclined belts and the tread. The reinforcing belt extends from the outside when mounted to the vehicle to the inside when mounted to the vehicle.
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公开(公告)号：US20190118584A1
公开(公告)日：2019-04-25
申请号：US16090804
申请日：2017-03-16
Applicant: BRIDGESTONE CORPORATION
Inventor： Tatsuya NAKAI , Ietomo MATSUNAGA , Kazuhiro MAEKAWA
Abstract: A tire having excellent motion performance on both a dry road surface and a wet road surface. A tire includes a tread having a tread surface on which one or more land portions are defined by two or more circumferential grooves extending in a circumferential direction of the tread, wherein the one or more land portions each have a plurality of sipes extending in a direction traversing an equator of the tire and spaced from each other in the circumferential direction of the tread, and a dynamic elastic modulus E′ at 30° C. of a rubber composition forming the one or more land portions, a number N of the plurality of sipes, and a depth D of the circumferential grooves satisfy 0.009≤E′/(N×D)≤0.029.
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公开(公告)号：US20140166179A1
公开(公告)日：2014-06-19
申请号：US14132419
申请日：2013-12-18
Applicant: BRIDGESTONE CORPORATION
Inventor： Toshiyuki WATANABE , Yoshiyuki WAKI , Taiga ISHIHARA , Hidetoshi YOKOTA , Seiji ISHIKAWA , Ietomo MATSUNAGA , Akio KUSANO , Hiroshi TAKADA , Akane MIYOSHI
CPC classification number: B60C19/002 , B29D30/0061 , B29D30/0681
Abstract: A pneumatic tire with short fibers fixed to the inner surface of the tire with improved peel resistance, and a method of producing such a pneumatic tire. The pneumatic tire has a carcass toroidally extending from a tread portion along a pair of sidewall portions to a pair of bead portions, and bead fillers provided radially outwardly of bead cores embedded in the bead portions, including flocking areas in which many short fibers are fixed to at least part of an inner surface of the pneumatic tire with an adhesive. The flocking areas are positioned such that their tire radial direction inner ends are positioned inwardly in the tire radial direction as compared to the tire radial direction outer ends of the bead fillers and are spaced a given distance outward in the tire radial direction apart from bead toes.
Abstract translation: 具有固定在轮胎内表面的短纤维的充气轮胎具有改善的抗剥离性，以及制造这种充气轮胎的方法。 充气轮胎具有从胎面部沿着一对侧壁部分环状地延伸到一对胎圈部分的胎体，以及设置在胎圈部分中的胎圈芯的径向向外设置的胎圈填料，包括其中许多短纤维固定的植绒区域 到达充气轮胎的内表面的至少一部分。 植绒区域被定位成使得它们的轮胎径向内端部与胎圈填料的轮胎径向外端相比在轮胎径向方向上向内定位，并且在轮胎径向方向上与胎圈趾部分开间隔一定距离 。
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公开(公告)号：US20170100966A1
公开(公告)日：2017-04-13
申请号：US15312152
申请日：2015-04-22
Applicant: BRIDGESTONE CORPORATION
Inventor： Ietomo MATSUNAGA , Tadashi WAKIYAMA
CPC classification number: B60C11/1323 , B60C5/00 , B60C11/03 , B60C11/0302 , B60C11/0304 , B60C11/13
Abstract: A pneumatic tire includes a tread having a tread surface, circumferential main grooves on the tread, and land portions formed between the circumferential main grooves. Each of the circumferential main grooves has, in a lateral cross-sectional view, a groove bottom surface, an outside groove wall surface, an inside groove wall surface, an outside curved portion connecting the groove bottom surface with the outside groove wall surface, and an inside curved portion connecting the groove bottom surface with the inside groove wall surface. In the lateral cross-sectional view, (a minimum curvature radius of the outside curved portion)>(a minimum curvature radius of the inside curved portion) is satisfied. (the groove wall angle α [between a tread normal line and the outside groove wall surface])
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公开(公告)号：US20160236519A1
公开(公告)日：2016-08-18
申请号：US15026639
申请日：2014-06-30
Applicant: BRIDGESTONE CORPORATION
Inventor： Tadashi WAKIYAMA , Shoji HAYASHI , Ietomo MATSUNAGA , Masaki WADA , Masafumi KOIDE , Tatsuya NAKAI
IPC: B60C11/03
CPC classification number: B60C11/0332 , B60C11/0302 , B60C11/0304 , B60C11/0306 , B60C11/1376 , B60C2011/0341 , B60C2011/0386
Abstract: An object is to improve noise performance of a tire while enhancing movement performance thereof. At least one of the land portions (20) includes an outer wall surface (30) positioned on a vehicle outer side, an inner wall surface (31) positioned on a vehicle inner side, a tread surface (32) on an outer side in a tire radial direction, an outer edge (33) of the tread surface (32) in contact with the outer wall surface (30), and an inner edge (34) of the tread surface (32) in contact with the inner wall surface (31). The tread surface (32) is formed in a convex shape which is smoothly curved between the outer edge (33) and the inner edge (34) and which has a top portion (43) most protruded outward in the tire radial direction, in a cross section of the land portion (20) in a tire width direction. A relationship of Do
Abstract translation: 目的在于提高轮胎的噪声性能，同时提高轮胎的运动性能。 陆地部分（20）中的至少一个包括位于车辆外侧的外壁表面（30），位于车辆内侧的内壁表面（31），位于车辆内侧的外侧表面（32） 轮胎径向方向，与外壁表面（30）接触的胎面表面（32）的外边缘（33）和与内壁表面（30）接触的胎面表面（32）的内边缘（34） （31）。 胎面表面（32）形成为在外缘（33）和内缘（34）之间平滑弯曲的凸形状，并且具有在轮胎径向上最向外突出的顶部（43） 陆部（20）的轮胎宽度方向的横截面。 当轮胎径向上的顶部（43）和外边缘（33）之间的距离被捐赠为Do时，Do
