专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS6259106A PNEUMATIC TIRE 失效
公开(公告)号：JPS6259106A
公开(公告)日：1987-03-14
申请号：JP17836685
申请日：1985-08-12
申请人： BRIDGESTONE CORP
发明人： OGAWA HIROSHI , MAMADA MAMORU
IPC分类号： B60C11/01 , B60C11/04
摘要： PURPOSE:To suppress the eccentric abrasion by forming a recessed part which is departed from the shoulder edge and extends nearly in the circumferential direction of a tire onto the shoulder rib on the outermost side, in the captioned tire having a tread divided into a plurality of ribs by several main grooves extending in the circumferential direction. CONSTITUTION:The tread 1 of a radial tire has the ribs 3 and 4 divided by several wide main grooves 2 extending in zigzag form along the circumferential direction of the tire. In this case, a recessed part 7 extending nearly in the circumferential direction and departed in the direction of tire width from the shoulder edge 3a is formed on the shoulder rib 3 positioned on the both outermost sides of the tread. The recessed part 7 is formed so as to have the ridgelines 7a and 7b crossing with the surface 3a of the shoulder rib 3 and a recessed surface 7c formed with a single radius R7 of curvature between the ridgelines 7a and 7b, and the depth D7 is made 30% or less of the depth D2 of the contiguous main groove 2, and the width W7 is made 10-50% of the width W3 of the rib 3.

2. 发明专利

JPS6296107A PNEUMATIC TIRE 失效
公开(公告)号：JPS6296107A
公开(公告)日：1987-05-02
申请号：JP23530985
申请日：1985-10-23
申请人： BRIDGESTONE CORP
发明人： MAMADA MAMORU , NIBU HIKARI , MINEKI EIJI
IPC分类号： B60C11/04
摘要： PURPOSE:To prevent a rib from being torn in a vehicular tire including both main and narrow grooves in its tread section, by forming both deep and shallow portions having specified pitchs respectively in a narrow groove,, and specifying both groove length and groove depth ratios. CONSTITUTION:Both main and narrow grooves 2, 3 in the circumferential direction are formed in a tread section 1. And the narrow groove 3 is varied in its depth along the circumference in such a way that a deep portion 'a' is spaced from a sharrow portion 'b' with a pitch 'p'. And a ratio lb/la of the length lb of the sharrow portion 'b' to the length la of the deep portion 'a' within one (1) pitch is to be 0.5-1.0. And the maximum depth 'ha' of the deep portion 'a' is to be 0.7 to 1.0 times the depth H of the main groove 2. And the minimum depth hb of the sharrow portion 'b' is to be 0.4 to 0.8 times the maximum depth ha. And the pitch 'p' is set at the size of 1 to 7 times the maximum depth ha. This constitution prevents a rib from being torn.

3. 发明专利

JPS6082407A RADIAL TIRE FOR HEAVY CAR 失效
公开(公告)号：JPS6082407A
公开(公告)日：1985-05-10
申请号：JP19069883
申请日：1983-10-14
申请人： BRIDGESTONE CORP
发明人： OKAMOTO KEIZOU , MAMADA MAMORU
IPC分类号： B60C9/08 , B60C1/00 , B60C3/00 , B60C11/00 , B60C11/04
摘要： PURPOSE:To manufacture a tire with low fuel consumption and high WS by specifying the groove angle of a main groove and the negative ratio of a contact section and then specifying the composition of the rubber layer of the contact section, the compliance after vulganization, loss modulus, compression modulus. CONSTITUTION:A rubber layer 4 of a contact section uses the blending composition that contains 100pts.wt. of rubber components including natural rubber, isoprene rubber or both blended rubber, 35-60pts.wt of carbon black whose iodine adsorption amount is 70-150mg/g and DBP oil absorption amount is 60-130ml/100g, and 0.1-10pts.wt of nitroso quinoline compound, and of which compliance after vulganization is 2X10 -12X10 cm /dyne, of which loss modulus is 0.5X10 -4X10 dyne/cm , and of which compression modulus at 90 deg.C is 4kg/cm . Besides, the groove angle of a main groove 6 is set to 5-25 deg. and the negative ratio of the contact section 4 is set to 10-35%. As a result, a tire with low fuel consumption, high WS, and low heat generation can be obtained.

4. 发明专利

JPS63232007A PNEUMATIC RADIAL TIRE FOR HEAVY LOAD USE 失效
公开(公告)号：JPS63232007A
公开(公告)日：1988-09-28
申请号：JP3999288
申请日：1988-02-23
申请人： BRIDGESTONE CORP
发明人： MOTOMURA KENICHI , MAMADA MAMORU , OGAWA HIROSHI
IPC分类号： B60C11/04 , B60C9/08 , B60C11/01 , B60C11/12
摘要： PURPOSE:To prevent various partial abrasion of a tread, by setting the width of a main groove in a specific ratio to the width of the tread, and further by dividing a shoulder rib into a plurality of small ribs in a specific position by an auxiliary groove having a specific width and depth. CONSTITUTION:A tread 1 is divided into two shoulder ribs 3 and at least one center rib 4 by at least two main grooves 2 extending in the circumferential direction of a tire. In this case, the main groove 2 is formed to have a wide width, and the width W2 of the groove is set to be 4 to 8% of the width T in the ground contacting region of the tread 1. Further, each shoulder rib 3 is divided into a plurality of small ribs 6 and 7 by at least one auxiliary groove 5 extending zigzag in the circumferential direction of the tire. And with regard to the auxiliary groove 5, the ratio of the distance B from the tread end 10 to itself to the width A of the shoulder rib 3 is set to be 50% or less; the ratio of the width W5 to the tread width T to be 3% or less; and the ratio of the depth to the depth of main groove 2 to be 30% or more, respectively.

5. 发明专利

JPS63106112A PNEUMATIC RADIAL TYRE 失效
公开(公告)号：JPS63106112A
公开(公告)日：1988-05-11
申请号：JP11087387
申请日：1987-05-08
申请人： BRIDGESTONE CORP
发明人： MAMADA MAMORU , YAHAGI MASAHISA , NAKAMURA MASAO
IPC分类号： B60C11/04 , B60C11/01 , B60C11/12
摘要： PURPOSE:To improve wandering efficiency by extending an auxiliary groove with a specified width, at the specified inclination and in the circumferential direction, in the specified position of the shoulder rib of a tyre and forming a siping on a neighboring land on the outside in a radial tyre for heavy load such as buss, etc. CONSTITUTION:An auxiliary groove 20 whose groove width W is narrower than the groove width Wt of the main groove 10 in the circumferential direction and which has such a width that the groove side walls 21, 22 don't contact with each other at the time of tyre rotation is provided, at an inclination thetaof 10 deg.-60 deg. to the normal of a tread in the circumferential direction at a shoulder rib Ts at least on one side. And the arrangement position of the auxiliary groove 20 is determined as distance S which is 20-80% of a shoulder rib So from the tread end T1. And many sypes 30 directed to the axis direction of a tyre E so that they cross the land P are arranged on a neighboring land P on the outside of the auxiliary groove 20. By this constitution, the wandering efficiency can be improved without harming tyre property.

6. 发明专利

JPS6259105A PNEUMATIC TIRE 失效
公开(公告)号：JPS6259105A
公开(公告)日：1987-03-14
申请号：JP19925585
申请日：1985-09-09
申请人： BRIDGESTONE CORP
发明人： OKAMOTO KEIZO , OGAWA HIROSHI , MAMADA MAMORU
IPC分类号： B60C11/00
摘要： PURPOSE:To reduce the eccentric abrasion of a tread part by constituting the tread rubber from an outer side rubber and a center rubber and permitting a specific equation regulated by the storage modulus, abrasion resistance, and grounded pressure of each rubber to be satisfied. CONSTITUTION:A radial tire suitable for heavy load use has a tread part 1 divided into several ribs 3-5 by at least two main grooves extending nearly in the circumferential direction of the tire, and said tread part 1 has a tread rubber 7 consisting of a tread outer side rubber A forming the edge part 9a of a shoulder 9 and a tread center rubber B joined with the rubber A. In this cases, if each storage modulus of the outer side rubber A and the center rubber B is set as EA', EB', and the abrasion resistance is set as WA, WB, and the grounded pressure is set as PA, PB, following relation shall be established between the rubbers A and B: (EA'XWA)/PA>(EB'XWB)PB. Further, EA' is set in 105-140% of EB', and WA is set in 100-140% of WB.

7. 发明专利

JP2575671B2 失效
公开(公告)号：JP2575671B2
公开(公告)日：1997-01-29
申请号：JP26991586
申请日：1986-11-14
申请人： BRIDGESTONE CORP
发明人： MAMADA MAMORU , NAKAMURA MASAO , YAHAGI MASAHISA
IPC分类号： B60C11/04 , B60C11/01 , B60C11/11 , B60C11/117 , B60C11/13

8. 发明专利

JPH064364B2 失效
公开(公告)号：JPH064364B2
公开(公告)日：1994-01-19
申请号：JP26478084
申请日：1984-12-14
申请人： BRIDGESTONE CORP
发明人： MOTOMURA KENICHI , MAMADA MAMORU , OGAWA HIROSHI
IPC分类号： B60C11/04 , B60C11/06

9. 发明专利

JPS62261507A PNEUMATIC RADIAL TIRE 失效
公开(公告)号：JPS62261507A
公开(公告)日：1987-11-13
申请号：JP10627386
申请日：1986-05-09
申请人： BRIDGESTONE CORP
发明人： NAKAMURA MASAO , SUZUKI YASUO , MAMADA MAMORU
IPC分类号： B60C11/04 , B60C11/01
摘要： PURPOSE:To obtain the superior wandering faculty as tire for heavy load by arranging a step difference part extending in the circumferential direction onto a shoulder rib and specifying the step difference quantity and the width of the step difference part and forming the tread edge to a round shoulder form. CONSTITUTION:On the tread surface T of a tire E, a plurality of circumferential main grooves 10 are formed in parallel to the circumferential direction of the tire E. In this case, a step difference part 20 extending nearly in the circumferential direction is formed onto the shoulder rib Ts at least on one side. The tread surface Ta of the step difference part 20 is formed so as to be positioned inside in the radial direction of the tire in comparison with the tread surface Tb of the tire center part side. The step difference quality H is set to the value where the tread surface Ta of the step difference part 20 is grounded with the regularly charged internal pressure in the rolling with a regular load, and the width S of the step difference part 20 is set to 5-20% of the tread grounded width Wo. Further, the tread edge is formed to a round shoulder form.

10. 发明专利

JPS61143205A Pneumatic radial tire for heavy load 失效
标题翻译：用于重载的气动径向轮胎
公开(公告)号：JPS61143205A
公开(公告)日：1986-06-30
申请号：JP26478084
申请日：1984-12-14
申请人： Bridgestone Corp
发明人： MOTOMURA KENICHI , MAMADA MAMORU , OGAWA HIROSHI
IPC分类号： B60C11/04 , B60C11/06
CPC分类号： B60C11/04 , B60C11/042
摘要： PURPOSE:To improve the life of a tire by providing a shoulder rib having a sub-groove with specific width and depth in a specific position, and dividing it into small ribs to form a tread pattern in the tire, as stated in the title, suitable for high speed running of a bus etc. on a good road. CONSTITUTION:A shoulder rib 3 composed of a main groove in a tread 1 is further divided into small ribs 6, 7 by a sub-groove 5 extending to a circumferential direction in a position where the distance B from the tread end 10 is under 50% of the shoulder rib width A. And the width W5 of the sub-groove 5 is set under 0.3% of the tread width T, and the depth of the sub-groove is set over 30% of the depth of the adjacent main groove 2. By this constitution, it is possible to prevent rapid difference in grounding pressure within the shoulder rib 3 and to prevent the eccentric abrasion, and thus it is possible to extend the life.
摘要翻译：目的：通过提供具有在特定位置具有特定宽度和深度的子槽的肩肋来改善轮胎的使用寿命，并将其分成小肋以在轮胎中形成胎面花纹，如标题所述，适合在高速公路上高速行驶等等。构成：由胎面1中的主槽构成的肩肋3通过在距离胎面端部10的距离B低于50°的位置的圆周方向延伸的副槽5进一步分割为小肋6,7 肩肋宽度A的百分比。子槽5的宽度W5设定在胎面宽度T的0.3％以下，并且副槽的深度设定在相邻主槽的深度的30％以上通过这种结构，可以防止肩肋3内的接地压力的快速差异，并且防止偏心磨损，因此可以延长使用寿命。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式