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1. 发明授权

US4890658A Pneumatic radial tire 失效
标题翻译：气动子午线轮胎
公开(公告)号：US4890658A
公开(公告)日：1990-01-02
申请号：US252721
申请日：1988-10-03
申请人： Kazuyuki Kabe , Masataka Koishi , Ken Takahashi
发明人： Kazuyuki Kabe , Masataka Koishi , Ken Takahashi
IPC分类号： B60C11/01
CPC分类号： B60C11/01
摘要： A radial tire with a split structure in the first belt layer provided with an organic fiber cord layer in the split structure and having a narrow groove extending in the circumferential direction of the tire and provided in each of both shoulder portions of the surface of a tread, wherein the narrow groove has a depth h determined in the radial direction of the tire, and a distance d.sub.1 measured between the internal edge on the shoulder side of an opening portion of the narrow groove and the radially outermost surface of the shoulder portion as determined along a parallel line to the surface of the tread, and a distance d.sub.2 measured between the internal wall surface on the shoulder side of the bottom of the narrow groove and the radially outermost surface of the shoulder portion as determined along a parallel line to the surface of the tread, wherein d.sub.1 is less than 15 mm and is smaller than d.sub.2, and a shape factor m defined by the following equation is 0.8 to 1.2: ##EQU1##

2. 发明授权

US06443205B1 Pneumatic tire with specified rubber properties 有权
公开(公告)号：US06443205B1
公开(公告)日：2002-09-03
申请号：US09803144
申请日：2001-03-12
申请人： Zenichiro Shida , Masataka Koishi
发明人： Zenichiro Shida , Masataka Koishi
IPC分类号： B60C1506
摘要： A pneumatic tire comprises a carcass layer provided between a pair of left and right bead sections, each of both end parts of the carcass layer in a tire width direction being turned up around a bead core from the inside of the tire to its outside, and a bead apex arranged in an outer peripheral side of the bead core, wherein at least a 30% area of a cross-sectional area of the bead apex positioned in a range of 20 to 35% of a tire section height SH is made of low tan &dgr; rubber which is set in a range of 25 to 75% of tan &dgr; of base bead apex rubber for a bead apex main body.

3. 发明授权

US06868716B2 Shape design process of engineering products and pneumatic tire designed using the present design process 失效
标题翻译：使用本设计流程设计的工程产品和充气轮胎的形状设计过程
公开(公告)号：US06868716B2
公开(公告)日：2005-03-22
申请号：US09893617
申请日：2001-06-29
申请人： Toshihiko Okano , Masataka Koishi
发明人： Toshihiko Okano , Masataka Koishi
IPC分类号： B60C3/00 , B60C19/00 , G06F17/50 , G01M17/02
CPC分类号： B60C19/00 , B60C3/00
摘要： This invention provides a product shape designing process for designing an optimal product shape, particularly a pneumatic tire contor in a cross section, comprising the following steps. A shape generation step of setting plural basal shapes and linearly combining the basal shapes to generate plural sample product shapes, a performance evaluation step of obtaining evaluation values on a product performance of the sample product shapes generated in the shape generation step, and a product shape extraction step of extracting an optimal product shape whose evaluation value on the product performance is an optimal value based on the evaluation values on the product performance obtained in the performance evaluation step. This process realizes a smooth optimal tire contor that reduces rolling resistance coefficient while increasing lateral spring constant of the tire for good drivability.
摘要翻译：本发明提供一种用于设计最佳产品形状的产品形状设计过程，特别是横截面中的充气轮胎保持器，包括以下步骤。一种形状生成步骤，其特征在于，设定多个基底形状，并且直线地组合所述基底形状以生成多个样本产品形状;获得所述形状生成步骤中生成的样本产品形状的产品性能的评价值的评价值以及产品形状提取步骤，根据在评价步骤中得到的产品性能的评价值，提取其对产品性能的评价值为最佳值的最优产品形状。该过程实现了平滑的最佳轮胎对手，其降低滚动阻力系数，同时增加轮胎的侧向弹簧常数以获得良好的驾驶性能。

4. 发明授权

US06223797B1 Pneumatic tire with specified rubber properties 有权
标题翻译：具有规定橡胶性能的气动轮胎
公开(公告)号：US06223797B1
公开(公告)日：2001-05-01
申请号：US09237843
申请日：1999-01-27
申请人： Zenichiro Shida , Masataka Koishi
发明人： Zenichiro Shida , Masataka Koishi
IPC分类号： B60C100
CPC分类号： B60C1/0025 , B60C1/0016 , B60C15/06 , B60C15/0607 , Y10T152/10765 , Y10T152/1081 , Y10T152/10819 , Y10T152/10837 , Y10T152/10846 , Y10T152/10855
摘要： Disclosed is a pneumatic tire which comprises a carcass layer provided between a pair of left and right bead sections, left and right side wall sections interpolated for connecting the pair of left and right bead sections with a tread section to be continuous, and at least two belt layers provided in an outer peripheral side of the carcass layer in the tread section, each of the belt layers being composed of a plurality of reinforcing cords coated with coating rubber. Storage elastic modulus E′ of the coating rubber is set in a range of 15.0 to 40.0 MPa, and its loss tangent tan &dgr; is set in a range of 0.1 to 0.25. Interlayer rubber is provided between end parts of the belt layers, the interlayer rubber being specifically set in each of both end parts thereof in a tire width direction, and elongation to break Eb of the interlayer rubber is set in a range of 400 to 700%. In another embodiment, at least a 30% area of a cross-sectional area of the bead apex positioned in the range of 20 to 35% of a tire section height SH is made of low tan &dgr; rubber which is set in a range of 25 to 75% of tan &dgr; of base bead apex rubber for a bead apex main body.
摘要翻译：公开了一种充气轮胎，其包括设置在一对左右胎圈部之间的胎体层，插入的左右侧壁部分，用于将一对左右胎圈部分与要连续的胎面部分连接，并且至少两个带束层设置在胎面部的胎体层的外周侧，每个带层由涂覆有橡胶的多个加强帘线构成。涂布橡胶的存储弹性模量E'设定在15.0〜40.0MPa的范围内，其损耗角正切tanδ设定在0.1〜0.25的范围内。在带束层的端部之间设置有中间层橡胶，在轮胎宽度方向的两端部具体设置层间橡胶，将层间橡胶的断裂伸长率Eb设定在400〜700％的范围内，。在另一个实施例中，位于轮胎截面高度SH的20至35％范围内的胎圈三角形的横截面面积的至少30％的面积由低tanδ橡胶制成，其设置在25的范围内到胎冠三角形主体的基部胎圈三角橡胶的至少75％的tanδ。

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