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11. 发明专利

JP2001213115A PNEUMATIC RADIAL TIRE 失效
公开(公告)号：JP2001213115A
公开(公告)日：2001-08-07
申请号：JP2000028804
申请日：2000-02-07
申请人： BRIDGESTONE CORP
发明人： KONO YOSHIHIDE , TSURUTA MAKOTO
IPC分类号： B60C9/18 , B60C9/22
摘要： PROBLEM TO BE SOLVED: To provide a method of advantageously avoiding cracking in the bottoms of shoulder grooves in a belt structure having low rigidity at the bottoms of the shoulder grooves, represented when a peripheral belt layer is applied to at least one layer of belt. SOLUTION: This pneumatic radial tire comprises a carcass as a skeleton consisting of plies with cords arranged across a pair of bead cores in the radial direction and at least two layers of belt and tread arranged in sequence outside in the radial direction of the carcass, the tread having a plurality of peripheral grooves on the surface. At least one layer of peripheral belt formed of reinforcing elements extending along a tire equator and at least one layer of auxiliary belt formed of organic fiber cords extending slantly to the tire equator are arranged radially inside of peripheral grooves (shoulder grooves) adjacent to portions of the tire shoulders.

12. 发明专利

JPH1076820A PNEUMATIC RADIAL TIRE 失效
公开(公告)号：JPH1076820A
公开(公告)日：1998-03-24
申请号：JP23294796
申请日：1996-09-03
申请人： BRIDGESTONE CORP
发明人： TSURUTA MAKOTO , NAKAMURA HIROSHI
IPC分类号： B60C9/18 , B60C15/06
摘要： PROBLEM TO BE SOLVED: To provide a pneumatic radial tire which can exert a high level separation resistance of a folded-back end part satisfactorily by enhancing the exfoliating resistance of the carcass body from cords of covering rubber. SOLUTION: A rubber filler 7 to be set between the body 5a of carcass and a folded-back part includes three sorts of rubber having different JIS hardness, and among them, the hardest rubber member 7-1 is positioned on the carcass body 5a side at least in the outer region of both sides in the tire radial direction pinching the normal Lv to the outside surface of the carcass body 5a passing the folded-back end part, and the intermediate rubber member is installed as a stress relieving rubber layer 7-2 between the outer surface of the carcass body 5a and the hardest rubber member 7-1, and the softest rubber member 7-3 is arranged on the inner surface of the folded-back part, wherein the layer 7-2 has a hardness below that of the cord covering rubber of the carcass 5.

13. 发明专利

JPH09188107A PNEUMATIC RADIAL TIRE 失效
公开(公告)号：JPH09188107A
公开(公告)日：1997-07-22
申请号：JP1835196
申请日：1996-01-09
申请人： BRIDGESTONE CORP
发明人： NAKAMURA HIROSHI , TSURUTA MAKOTO
IPC分类号： B60C9/02 , B60C9/04 , B60C15/06
摘要： PROBLEM TO BE SOLVED: To efficiently suppress separation in the radially outer end part of the outside layer where the radially outer end is located on the radially outermost side. SOLUTION: Since a coating rubber in the radially outer end part (low modulus area 18a) of a return part 16 is made of a rubber of low modulus, stress in the radially outer end part of the return part 16 is reduced, and thus the stress acting on a crack at the time when the tip of the developing crack has reached the low modulus area 18a, is reduced. As a result, even when the crack tends to develop in the circumferential direction, such development of the crack is effectively suppressed.

14. 发明专利

JPH0999716A PNEUMATIC TIRE 失效
公开(公告)号：JPH0999716A
公开(公告)日：1997-04-15
申请号：JP27963895
申请日：1995-10-03
申请人： BRIDGESTONE CORP
发明人： TSURUTA MAKOTO , NAKAMURA HIROSHI
IPC分类号： B60C15/06
摘要： PROBLEM TO BE SOLVED: To effectively restrain a crack generated in rubber to surround a radial directional outside end part of a reinforcing layer. SOLUTION: When a tire 11 rolls by a load, a sidewall part 35 is twistingly deformed, and circumferential directional large relative strain is generated between a radial directional outside end part of a reinforcing layer 30 and rubber to surround the periphery of this. Therefore, a weak (not more than 55 degrees) intermediate rubber layer 34 is interposed between a folding back part 16 and the reinforcing layer 30, and circumferential directional deformation of the reinforcing layer 30 is facilitated, and relative strain is reduced thereby, and generation of a crack is effectively restrained.

15. 发明专利

JPH0664064A MANUFACTURE FOR PNEUMATIC TIRE AND PNEUMATIC TIRE 失效
公开(公告)号：JPH0664064A
公开(公告)日：1994-03-08
申请号：JP21690392
申请日：1992-08-14
申请人： BRIDGESTONE CORP
发明人： TSURUTA MAKOTO , IIDA HIROYUKI , UMEZAWA YUJIRO
IPC分类号： B29C33/02 , B29C33/42 , B29D30/08 , B29D30/20 , B29D30/72 , B29K21/00 , B29K105/24 , B29L30/00 , B60C13/02
摘要： PURPOSE:To prevent the generation of ozone cracks at a recessed part on the surface of a side wall. CONSTITUTION:A cavity is formed in an unvulcanized side tread 34. The cavity is formed at a position corresponding to a recessed part 36 of the side tread 34 of a vulcanized pneumatic tire 10. When a green tire which is an assembly of the side tread 34 and predetermined parts of the tire is molded in a predetermined vulcanization mold, the cavity of the unvulcanized side tread 34 matches with a projecting part of the vulcanization mold (to form the recessed part 36), and therefore, the amount of rubber partially thrust by the projecting part of the vulcanization mold becomes little. Accordingly, the rubber flows little to press a carcass ply 16. The carcass line is not deformed. No tensile stress is generated at the recessed part 36 of the vulcanized pneumatic tire 10 when the pressure is supplied into the tire, thereby preventing the generation of ozone cracks.

16. 发明专利

JPH05319034A PNEUMATIC TIRE 失效
公开(公告)号：JPH05319034A
公开(公告)日：1993-12-03
申请号：JP12463292
申请日：1992-05-18
申请人： BRIDGESTONE CORP
发明人： TSURUTA MAKOTO , IIDA HIROYUKI , UMEZAWA YUJIRO
IPC分类号： B60C13/00 , B60C13/02 , B60C15/00 , B60C15/024 , B60C15/06
摘要： PURPOSE:To suppress a progress of crack an to prevent a separation by setting the distance from the outermost end in an outer side ply to a caecass ply main body, the maximum distance from a tire imaginary surface when there is no recess to a recess, the curvature radius of the deepest position of the recess, and the height of the tire section, in a specific relation. CONSTITUTION:The distance between the end 16C of the turning part 16B of a carcass ply 16 is made A, and a recess 26 which has the largest distance D from an imaginary surface 24A with no recess 26 is formed to a side wall 24 between the outermost side in the radius direction of the turning part 16B and the tire maximum width position WMAX, and its curvature radius is made R. And when the height of the tire section is made H, the relation of the A, D, R, and H are set as R/H>=0.30XD/A. Consequently, a progress of crack from the outer end in the radius direction of the outer side ply 16B is suppressed so as to prevent a separation, and furthermore, a development of ozone crack generated in the recess 26 can be prevented.

17. 发明专利

JPH04176713A PNEUMATIC TIRE 失效
公开(公告)号：JPH04176713A
公开(公告)日：1992-06-24
申请号：JP30686490
申请日：1990-11-13
申请人： BRIDGESTONE CORP
发明人： IIDA HIROYUKI , TSURUTA MAKOTO , KOBAYASHI YASUHIKO , KOSEKI HIROYUKI
IPC分类号： B60C13/00 , B60C15/00 , B60C15/024
摘要： PURPOSE:To improve the bead part durability by determining the outer surface shape of a side wall part so as to satisfy a specific equation and positioning a part of a recessed part within a range, in a tire having a recessed part between the outer edge in the radial direction of the outside ply of a carcass ply and the tire max. width position. CONSTITUTION:The curved line B-B which is parallel to the center line A-A in the thickness direction of a carcass ply body part 25 and is directed to the tire max. width position 11, passing through the outer edge 16 in the radial direction of an outside ply 15 is set as an obtained axis, and the distance between the outer edge 16 and the line A-A of the axis (d) which is drawn perpendicularly to the (h) axis from the outer edge 16 is set (s). The curved line D-D is drawn close to the curved line B-B by 1/3s for the line A-A, in parallel to the line A-A. When each distance on the axes (h) and (d) from the original point is set (h) and (d), if the curved line C-C which satisfies the equation I is drawn, a part of a recessed part 21 is positioned in a range surrounded by the curved lines D-D, C-C, and the axis (d).

18. 发明专利

JP2014037237A Tire 有权
标题翻译：胎
公开(公告)号：JP2014037237A
公开(公告)日：2014-02-27
申请号：JP2013245104
申请日：2013-11-27
申请人： Bridgestone Corp , 株式会社ブリヂストン
发明人： NAKADA HIROSHI , YOSHIKAWA YUSUKE , ONO TAKASHI , TSURUTA MAKOTO
IPC分类号： B60C11/01 , B60C9/22 , B60C11/00
摘要： PROBLEM TO BE SOLVED: To provide a tire capable of suppressing uneven wear generated between a part of a tread portion disposed on the diameter outside of a circumferential direction belt and a part disposed closer to a width direction outside than the edge of the circumferential direction belt.SOLUTION: A pneumatic tire 1 includes a carcass 3 for coupling a pair of annular bead cores 2 and 2 separately arranged in a tire width direction in a toroidal shape, a plurality of cords extending along a tire circumferential direction, a circumferential direction belt 4 disposed on the diameter outside of the crown part 3a of the carcass 3, and tread rubbers 6 and 7 for covering the crown part 3a of the carcass 3 and the circumferential direction belt 4. The diameter direction thickness of the outer tread rubber 7 close to the width direction outside than the width direction end edge 4a of the circumferential direction belt 4 is set smaller than the inner tread rubber 6 closer to the width direction inside than the width direction end edge 4a of the circumferential direction belt 4.
摘要翻译：要解决的问题：提供一种轮胎，其能够抑制设置在圆周方向带的外侧的胎面部的一部分与设置在比周向带的边缘更靠外侧的宽度方向的部分之间产生的不均匀磨损解决方案：充气轮胎1包括：胎圈3，其用于连接沿轮胎宽度方向以环形形状分开设置的一对环形胎圈芯2和2，多个沿着轮胎周向延伸的帘线，圆周方向带4 设置在胎体3的胎冠部3a的直径的外侧，以及用于覆盖胎体3的胎冠部3a和周向带4的胎面橡胶6和7.外胎面橡胶7的直径方向厚度接近沿圆周方向带4的宽度方向端边缘4a外侧的宽度方向设定为小于靠近宽度dir的内胎面橡胶6 在圆周方向带4的宽度方向端边缘4a之外。

19. 发明专利

JP2013018442A tire 有权
标题翻译：胎
公开(公告)号：JP2013018442A
公开(公告)日：2013-01-31
申请号：JP2011155034
申请日：2011-07-13
申请人： Bridgestone Corp , 株式会社ブリヂストン
发明人： KAWAKAMI HIROKI , TSURUTA MAKOTO
IPC分类号： B60C11/01 , B60C11/11
摘要： PROBLEM TO BE SOLVED: To surely improve a heat radiation without spoiling the rigidity and the wear resistance of the tread part.SOLUTION: Protrusions 201 and 202 extending in the tire radial direction, while projecting from a side face 101 to the outside of the tread width direction tw is formed in the area 101a of one side of the tire circumferential direction more than a block center line Bc in the tire circumferential direction of the side face 101 of a land part block 100 (buttress part 14). Lengths Lh1 and Lh2 of the protrusions 201 and 202 in the tire radial direction tr are shorter than the length H (that is, depth H of lateral groove 40A) to a groove bottom 40Ab of the lateral groove 40A from the surface of tread part 13. In the embodiment, the protrusions 201 and 202 are formed abreast in the tire radial direction tr.
摘要翻译：要解决的问题：确保改善散热而不破坏胎面部的刚性和耐磨性。解决方案：在轮胎周向的一侧的区域101a中形成有从轮胎径向延伸的突出部201和202，而从侧面101向胎面宽度方向tw的外侧突出，中心线Bc在陆部块100（支撑部14）的侧面101的轮胎周向上。突起201和202在轮胎径向方向tr上的长度Lh1和Lh2比从胎面部13的表面到横向槽40A的槽底40Ab的长度H（横向槽40A的深度H）短在本实施例中，突起201和202在轮胎径向方向tr上形成一体。版权所有（C）2013，JPO＆INPIT

20. 发明专利

JP2006199220A Pneumatic tire 审中-公开
标题翻译：气动轮胎
公开(公告)号：JP2006199220A
公开(公告)日：2006-08-03
申请号：JP2005015019
申请日：2005-01-24
申请人： Bridgestone Corp , 株式会社ブリヂストン
发明人： TSURUTA MAKOTO
IPC分类号： B60C9/22 , B60C9/18 , B60C9/20
CPC分类号： B60C2009/1871 , B60C2009/2038
摘要： PROBLEM TO BE SOLVED: To provide a pneumatic tire capable of suppressing effectively layer separation generated between a belt layer 24 and the external end in the width direction of a belt reinforcing layer 31.
SOLUTION: A pair of split belt layers 36 with the belt layer 24 and cords inclined in the opposite directions are overlapped partially on the belt layer 24, in which the overlapping portion 40 is able to suppress the bending deformation in the width direction based on the radius difference of the crown roundness, and the inner ends 36a in the width direction of the split belt layers 36 are positioned inside about the width direction more than the external ends about the width direction of the widest reinforcing plies 32a and 32b, whereas the inner ends 36a in the width direction can suppress the bending deformation in the circumferential direction of the belt layer 24, so that it is possible to suppress effectively the shearing deformation in the circumferential direction generated between the belt layer 24 and the external end in the width direction of the belt reinforcing layer 31.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决方案：提供一种能够有效地抑制带束层24与带束层增强层31的宽度方向上的外端之间产生的层间分离的充气轮胎。解决方案：一对开口带具有带层24的层36和相反方向倾斜的帘线部分地重叠在带束层24上，其中重叠部分40能够基于冠部圆度的半径差来抑制宽度方向上的弯曲变形，并且分裂带束层36的宽度方向上的内端36a相对于最宽的加强层32a和32b的宽度方向的外端位于宽度方向的内侧，而宽度方向的内端36a可以抑制带束层24的圆周方向的弯曲变形，能够有效地抑制圆周方向的剪切变形在带束层24与带束层31的宽度方向的外侧端部之间产生。版权所有（C）2006，JPO＆NCIPI

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