公开(公告)号：US5803998A

公开(公告)日：1998-09-08

申请号：US637375

申请日：1996-04-25

Applicant: Yasuo Ohsawa ,  Hiroshi Kadowaki

Inventor： Yasuo Ohsawa ,  Hiroshi Kadowaki

IPC: B60C3/04 ,  B60C11/00 ,  B60C11/01 ,  B60C3/00

CPC classification number: B60C11/0083 ,  B60C11/00 ,  B60C11/01 ,  B60C3/04

Abstract: A pneumatic radial tire having an excellent resistance to uneven wear is provided by optimizing a crown profile of a tread portion, in which at least a radial half section of the crown profile with respect to an equatorial plane of the tire is divided into center and middle and shoulder regions and comprised of a composite arc formed by smoothly connecting at least three arcs having different radii of curvature to each other and each of distances and radii of curvature of these regions satisfies a particular relation.

Abstract translation: 通过优化胎面部分的胎冠轮廓来提供具有优异的耐不均匀磨损性的充气子午线轮胎，其中胎冠轮廓相对于轮胎的赤道平面的至少半径部分被分成中心和中部 和肩部区域，并且由通过平滑地连接具有不同曲率半径的至少三个弧形成的复合电弧组成，并且这些区域的每个距离和曲率半径都满足特定关系。

公开(公告)号：US06866076B2

公开(公告)日：2005-03-15

申请号：US09777653

申请日：2001-02-07

Applicant: Yasuo Ohsawa

Inventor： Yasuo Ohsawa

IPC: B60C11/13 ,  B60C101/00 ,  B60C103/00

CPC classification number: B60C11/13 ,  B60C2011/1231 ,  B60C2011/133 ,  B60C2011/1338 ,  Y10S152/902

Abstract: A tire capable of reducing a resistance to a fluid in a groove to improve the wet performances. By forming smaller grooves (or riblets 20) having a depth set within a range of 0.01 to 0.5 mm at a pitch within a range of 0.01 to 0.5 mm in the walls of a circumferential groove and a transverse groove, more specifically, the resistance to the water flowing in the groove is reduced to improve the drainage efficiency of the groove. By arranging a turbulence generating zone having a number of pointed projections at the groove side faces at the confluence between the circumferential groove and the transverse groove, on the other hand, there is suppressed the separation of the water flow in the vicinity of the confluence. With these constructions, it is possible to improve the wet performances of the tire better than the prior art.

Abstract translation: 一种轮胎，其能够降低对槽中的流体的抵抗力，以改善湿润性能。 通过在周向槽和横向槽的壁中以0.01至0.5mm的范围内的间距形成深度设定在0.01至0.5mm范围内的较小凹槽（或肋20），更具体地说， 在槽中流动的水被减少以提高槽的排水效率。 另一方面，通过在沟槽侧面处设置具有多个尖突起的紊流发生区，另一方面抑制汇合附近的水流分离。 利用这些结构，可以比现有技术更好地改善轮胎的湿润性能。

公开(公告)号：US20050257870A1

公开(公告)日：2005-11-24

申请号：US10526068

申请日：2003-09-01

Applicant: Yasuo Ohsawa ,  Takafumi sawada ,  Takanari Saguchi ,  Kazuto Fujita ,  Arata Tomita

Inventor： Yasuo Ohsawa ,  Takafumi sawada ,  Takanari Saguchi ,  Kazuto Fujita ,  Arata Tomita

IPC: B60C11/01 ,  B60C11/03 ,  B60C11/04 ,  B60C11/13 ,  B60C11/12 ,  B60C3/06 ,  B60C17/00 ,  B60C111/00

CPC classification number: B60C11/01 ,  B60C11/0302 ,  B60C11/0304 ,  B60C11/0306 ,  B60C11/032 ,  B60C11/033 ,  B60C11/1218 ,  B60C11/124 ,  B60C11/13 ,  B60C11/1384 ,  B60C2011/0388

Abstract: The reduction of noise in the rotation of the tire and the improvement of resistance to hydroplaning are established and also the resistance to uneven wear is improved, in which four circumferential main grooves 2-5 are formed asymmetrically, and a sum of groove volume in a circumferential direction in lateral grooves formed in a shoulder land part row 7 as a portion of an axially inner side per unit width is made smaller than a sum of groove volume in the circumferential direction in lateral grooves 11 formed in a shoulder land part row 9 as a portion of an axially outer side and a land part row 6 in a central region is rendered into a rib, and slant grooves 13 extending at an average inclination angle of not less than 45° with respect to a widthwise direction of the tread are arranged in a second inner land part row 8 located at a side of an equatorial line adjacent to the shoulder land part row 7 at the axially inner side and these slant grooves 13 are opened to the circumferential main groove located adjacent to the second inner land part row 8 of the axially inner side.

Abstract translation: 建立了轮胎旋转中的噪声降低和滑移阻力的提高，并且改善了不均匀磨损的阻力，其中四个周向主槽2-5形成为不对称，并且槽体积在 形成在作为每单位宽度的轴向内侧的一部分的台肩部分列7的横向槽中的周向方向小于形成在台肩部分行9中的横向槽11中的圆周方向上的槽体积的总和， 将中心区域的轴向外侧部分和台肩部分列6的一部分变成肋状物，并且布置有相对于胎面的宽度方向以不小于45°的平均倾斜角度延伸的倾斜槽13 在第二内陆部分行8中，位于与轴肩内侧相邻的胎肩陆地部分列7的赤道线的一侧，并且这些倾斜槽13向周向开口 所述主槽与所述轴向内侧的第二内陆部排8相邻。

公开(公告)号：US20050247388A1

公开(公告)日：2005-11-10

申请号：US10526084

申请日：2003-09-01

Applicant: Yasuo Ohsawa ,  Takafumi Sawada ,  Takanari Saguchi ,  Kazuto Fujita ,  Arata Tomita

Inventor： Yasuo Ohsawa ,  Takafumi Sawada ,  Takanari Saguchi ,  Kazuto Fujita ,  Arata Tomita

IPC: B60C11/01 ,  B60C11/03 ,  B60C11/04 ,  B60C19/00 ,  B60C11/117 ,  B60C111/00 ,  G01M17/02

CPC classification number: B60C11/0083 ,  B60C11/01 ,  B60C11/0302 ,  B60C11/0304 ,  B60C11/0306 ,  B60C11/032 ,  B60C11/033 ,  B60C11/0332 ,  B60C11/1218 ,  B60C11/124 ,  B60C19/001 ,  B60C2011/0388 ,  Y10T29/49494

Abstract: This invention relates to a tire suitable in a passenger car, particularly a tire being high in the resistance to hydroplaning on a wet road surface and low in the tire noise and having an asymmetric tread pattern. In such a tread pattern that at least two circumferential grooves extending along an equatorial plane of the tire are formed in a region of a tread surface at an axially inner side with respect to the equatorial plane in the mounting on the vehicle and at least one circumferential groove is formed in a region at an axially outer side thereof, a circumferential groove nearest to the equatorial plane of the tire among the circumferential grooves arranged in the axially inner side region has a width wider by 20% or more than an average groove width of the tire and a circumferential groove arranged toward a side of a tread end at the axially inner side region has a width corresponding to 90-110% of the average groove width, and the circumferential groove nearest to the equatorial plane of the tire at the axially outer side region has a width narrower by 10% or more than the average groove width, whereby the resistance to hydroplaning and the controllability of tire noise, which have a conflicting relation in the prior art, are established in a higher level.

Abstract translation: 本发明涉及一种适用于乘用车的轮胎，特别是轮胎在湿路面上的抗滑动性高，轮胎噪音低，具有不对称的胎面花纹。 在这样的胎面花纹中，沿着轮胎的赤道平面延伸的至少两个圆周槽形成在相对于车辆上的安装件中的赤道平面的轴向内侧的胎面表面的区域中，并且至少一个周向 在其轴向外侧的区域形成有槽，在布置在轴向内侧区域的周向沟槽中，最靠近轮胎的赤道面的周向槽宽度比宽度宽20％以上 所述轮胎和沿所述轴向内侧区域的胎面端侧配置的周向槽宽度对应于所述平均槽宽度的90〜110％，并且所述周向槽最靠近所述轮胎的赤道面在轴向 外侧区域的宽度窄于平均槽宽度的10％以上，由此具有防滑性和轮胎噪声的可控性，其具有conf 在现有技术中的许可关系建立在更高的层次上。

公开(公告)号：US5225013A

公开(公告)日：1993-07-06

申请号：US493448

申请日：1990-03-14

Applicant: Yasuo Ohsawa ,  Yoshihide Kohno ,  Hiroyuki Koseki

Inventor： Yasuo Ohsawa ,  Yoshihide Kohno ,  Hiroyuki Koseki

IPC: B60C9/22

CPC classification number: B60C9/22 ,  B60C9/0057 ,  Y10T152/10765

Abstract: A pneumatic radial tire including a carcass layer having cords embedded therein and arranged perpendicular to an equatorial plane of the tire, and a belt layer including at least one belt ply having a large number of cords embedded therein, the cords including one or more filaments. The cords are disposed radially outside of said carcass layer, arranged substantially in parallel to the equatorial plane of the tire and bent in a wavy or zigzag form. At least those of the cords or filaments located at widthwise outermost locations in the parallel belt ply satisfy the following expression:d.times.a/.lambda..sup.2 .ltoreq.0.005and the cords or filaments in the parallel belt ply satisfy the following expression:a/.lambda..ltoreq.0.1wherein d is a filament diameter of the cords or filaments; .lambda. is a wavelength of the form; and a is one half of the amplitude of the form. Further, cords inclined at an angle of 10 to 50 degrees with respect to the equatorial plane of the tire are embedded in an inclined belt ply provided radially outside the carcass layer, thereby increasing the internal shearing rigidity of the belt layer and increasing the cornering power.

Abstract translation: 一种充气子午线轮胎，其包括具有嵌入其中并且垂直于所述轮胎的赤道平面布置的帘线的胎体层，以及包括至少一个具有嵌入其中的多根帘线的带束层的带束层，所述帘线包括一根或多根细丝。 帘线径向设置在所述胎体层的外侧，大致平行于轮胎的赤道面并弯曲成波浪形或锯齿形。 位于平行带束层宽度方向最外侧位置处的帘线或细丝的那些至少满足以下表达式：dxa /λ2 <0.005，平行带束层中的帘线或长丝满足以下表达式：a / 其中d是帘线或长丝的长丝直径; λ是形式的波长; a是形式幅度的一半。 此外，相对于轮胎的赤道平面倾斜10度至50度的帘线嵌入设置在胎体层径向外侧的倾斜带束层中，从而增加带束层的内部剪切刚度并提高转弯力 。