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1. 发明专利

JP2540124B2 失效
公开(公告)号：JP2540124B2
公开(公告)日：1996-10-02
申请号：JP24095184
申请日：1984-11-15
申请人： BRIDGESTONE CORP
发明人： OGAWA MASAKI , TANAKA TSUTOMU , YAHAGI MASAHISA , KUDO TAKAFUMI
IPC分类号： B60C9/18 , B60C9/20

2. 发明专利

JPH062441B2 失效
公开(公告)号：JPH062441B2
公开(公告)日：1994-01-12
申请号：JP24095084
申请日：1984-11-15
申请人： BRIDGESTONE CORP
发明人： OGAWA MASAKI , TANAKA TSUTOMU , YAHAGI MASAHISA , KUDO TAKAFUMI
IPC分类号： B60C11/00 , B60C1/00 , B60C11/04 , B60C11/14

3. 发明专利

JPH01101201A PNEUMATIC TIRE 失效
公开(公告)号：JPH01101201A
公开(公告)日：1989-04-19
申请号：JP25798887
申请日：1987-10-12
申请人： BRIDGESTONE CORP
发明人： ICHIKI YASUBUMI , YAHAGI MASAHISA
IPC分类号： B60C3/04 , B60C9/00 , B60C9/08 , B60C9/18 , B60C9/20
摘要： PURPOSE:To improve the traveling performance on ice and snow of a tire for heavy duty vehicle by setting a ratio between the tread width and tire maximum width and circumferential tensile rigidity of a belt in a predetermined range, then increasing the tread contact area when a predetermined inner pressure is applied inside the tire. CONSTITUTION:A ratio T/W between the tread width and tire maximum width is set in a range of 0.80 to 1.15. A circumferential tensile rigidity of a belt is set in a range of 700 to 2500kg/cm. Thus, inner pressure being 60 to 90% of normal inner pressure is applied into a carcass. With this arrangement, the contact area of the tread 2 is increased so as to improve the traveling performance on ice and snow.

4. 发明专利

JPS61228940A MANUFACTURE OF PNEUMATIC RADIAL TIRE 失效
公开(公告)号：JPS61228940A
公开(公告)日：1986-10-13
申请号：JP6990585
申请日：1985-04-04
申请人： BRIDGESTONE CORP
发明人： TANAKA TSUTOMU , YAHAGI MASAHISA
IPC分类号： B60C11/04 , B29D30/06
摘要： PURPOSE:To properly and profitably evade the distortion of a belt embedded in a tread rubber by a method wherein a recessed part, which substantially corresponds to a peripheral groove, is formed in advance on the outer surface of a tread rubber layer of a green tire and, after that, the shaping and vulcanization hardening of the green tire are performed. CONSTITUTION:The titled tire has peripheral grooves, which run continuously along its periphery in the central zone of its tread, and provides with the tread part, the rib rigidity of which is comparatively made lower by setting the angle of slope of the wall of the peripheral groove over the region ranging from the bottom of the peripheral groove to the height of 50% of the depth of the peripheral groove to the normal line to the tread 5 deg. or less or concretely provides with a peripheral groove 5 with U-shape in cross section, on the bottom of which a large number of bitten stone driving-out projections are arranged discontinuously, in the central zone W1 of the tread. In the green tread contour applied to the titled tire, a recess 1' is shaped at the position corresponding to the peripheral groove 1 in the central zone of the tire. The depth and width of the recess 1 are respectively formed to 80% of the depth and 120% of the width of the corresponding peripheral groove 1. Various kinds of members are assembled to said contour so as to shape the tire by vulcanization in a vulcanizing mold. At that time, the tire is vulcanized and hardened under the state that the peripheral groove 5 of the tire and the recess 1' of the tread are positioned to be coincide with each other.

5. 发明专利

JPS61119408A Pneumatic tire with durability improved 失效
标题翻译：具有耐久性改善的气动轮胎
公开(公告)号：JPS61119408A
公开(公告)日：1986-06-06
申请号：JP24095184
申请日：1984-11-15
申请人： Bridgestone Corp
发明人： OGAWA MASAKI , TANAKA TSUTOMU , YAHAGI MASAHISA , KUDO TAKAFUMI
IPC分类号： B60C9/18 , B60C9/20
CPC分类号： B60C9/1821
摘要： PURPOSE:To decrease both shear stress and shear strain of a belt by allowing coating rubber used for coating belt cords that compose a belt, and end rubber used for coating the both sides of the above mentioned coating rubber, to be made of a composition of rubber with short fibers that have the stated dimension and are mixed with the stated ratio. CONSTITUTION:A pneumatic tire 1 includes a carcass ply 5 which is composed of a rubber coated cord layer, a belt 10 which has numbers of layers with belt cords 6 located on the outer circumference of the carcass, and a tread 11 located on the outer circumference of the belt. The belt cords 6 are coated with coating rubber 7, the both sides 7a of which (7) are coated with end rubber 8. In this case, two adjacent ones, at least, of the above mentioned rubber 7 and 8 are made of a composition of rubber with short fibers of more than 5pts.wt. Here, the short fibers have an average diameter of smaller than 1mum, and a ration L/D of more than 8 where L represents an average length of the short fibers while D represents their average diameter. And the short fibers which are included in each of the rubber 7 and 8, are arranged so as to form the angles of from 0-30 deg., and from 45-90 deg. respectively to the direction of the belt cord 6.
摘要翻译：目的：通过使用用于涂布组合带的皮带帘线的涂布橡胶和用于涂覆上述涂料橡胶的两面的端部橡胶，来降低带的剪切应力和剪切应变，由组合物具有所述尺寸并与所述比例混合的具有短纤维的橡胶。构成：充气轮胎1包括由橡胶涂覆的帘线层组成的胎体帘布层5，具有位于胎体的外周上的带帘线6的多个层的带10和位于胎体外侧的胎面11 皮带周长。带束帘线6涂覆有涂覆橡胶7，其两侧7a（7）涂覆有端橡胶8.在这种情况下，至少上述橡胶7和8中的两个相邻的橡胶7由短纤维成分大于5pts.wt。这里，短纤维的平均直径小于1μm，比L / D大于8，其中L表示短纤维的平均长度，而D表示其平均直径。并且包括在橡胶7和8中的每一个中的短纤维被布置成形成0-30度和45-90度的角度。分别对应于带束帘线6的方向。

6. 发明专利

JPS61119407A Pneumatic tire 失效
标题翻译：气动轮胎
公开(公告)号：JPS61119407A
公开(公告)日：1986-06-06
申请号：JP24094984
申请日：1984-11-15
申请人： Bridgestone Corp
发明人： OGAWA MASAKI , TANAKA TSUTOMU , YAHAGI MASAHISA , KUDO TAKAFUMI
IPC分类号： B60C9/18 , B60C9/20 , B60C9/22 , B60C11/00
CPC分类号： B60C9/1821
摘要： PURPOSE:To prevent the both sides of a belt from being deformed radially and outward by arranging a rubber sheet layer, which is made of a composition or rubber with short fibers that have the stated dimension and are mixed with the stated ratio, between the both sides of a belt located on the outer circumference of a carcass and a tread. CONSTITUTION:A pneumatic tire 1 includes a carcass ply 5 which is composed of a rubber coated cord where numbers of cords are arranged in parallel. A belt 6 which is composed of steel cords located on the outer circumference of the carcass ply, and a tread 7 located on the outer circumference of the belt. In addition, a rubber sheet layer 8 is arranged between the both sides 6a of the belt and the tread 7. This rubber sheet layer 8 is made of a composition of rubber with short fibers of more than 5pts.wt. Here, the short fibers have an average diameter of smaller than 1mum and a ratio L/D of more than 8 where L represents an average length of the short fibers while D represents their average diameter. And the thickness of the rubber sheet is set to the from 0.3-1.0mm and the short fibers which compose the rubber sheet are arranged so as to form the angle of from 0-20 deg. to the circumferential direction.
摘要翻译：目的：通过将由具有规定尺寸的短纤维的组合物或橡胶制成的橡胶片层布置在两者之间，以防止带的两侧径向和向外变形位于胎体和胎面的外周上的带的侧面。构成：充气轮胎1包括胎体帘布层5，胎体帘布层5由其中数量的帘线并列布置的橡胶涂覆帘线组成。皮带6，其由位于胎体帘布层的外周上的钢帘线构成，胎面7位于带的外周。此外，橡胶片层8布置在带的两侧6a和胎面7之间。该橡胶片层8由具有大于5pts.wt。的短纤维的橡胶组合物制成。这里，短纤维的平均直径小于1μm，比L / D大于8，其中L表示短纤维的平均长度，而D表示其平均直径。将橡胶片的厚度设定为0.3〜1.0mm，构成橡胶片的短纤维配置成0〜20度的角度。到圆周方向。

7. 发明专利

JPS61119405A Pneumatic tire with durability improved 失效
标题翻译：具有耐久性改善的气动轮胎
公开(公告)号：JPS61119405A
公开(公告)日：1986-06-06
申请号：JP23978884
申请日：1984-11-14
申请人： Bridgestone Corp
发明人： OGAWA MASAKI , YAHAGI MASAHISA , TANAKA TSUTOMU , KUDO TAKAFUMI
IPC分类号： B60C9/18
CPC分类号： B60C9/1821
摘要： PURPOSE:To reduce shear strain between layer surface by arranging a composition of rubber with short fibers which has the stated dimensional and mixed with the stated ratio, in a space between numbers of rubber coated layers which compose a belt embedded between a carcass ply and a tread. CONSTITUTION:A pneumatic tire 1 includes a carcass ply 5 which is composed of a rubber coated cord layer where numbers of cords are arranged in parallel, a belt 8 which is located on the outer circumference of the carcass ply and is composed of numbers of rubber coated cord layers (belt layer) 7 that have a cord 6 where each of layers is arranged with the stated angle, and a tread 9 which is located on the outer circumference of the belt layer. In this case, a rubber sheet layer 10 which is composed of a composition or rubber with short fibers of more than 5 parts by weight, is arranged between two rubber coated layers 7 that are adjacent each other. Here, the short fibers have an average diameter of smaller than 1mum, and a ratio L/D or more than 8, where L represents an average length of the short fibers and D represent their average diameter. The thickness of the rubber sheet layer 10 is set to be from 0.3-1.0mm.
摘要翻译：目的：通过将具有所述尺寸的橡胶和具有所述尺寸的短纤维的组合物与所述比例相比较来减少层表面之间的剪切应变，所述橡胶涂层的数量构成嵌入胎体帘布层和踏。构成：充气轮胎1包括胎体帘布层5，胎体帘布层5由数量多个帘线平行布置的橡胶涂层帘线层组成，带8位于胎体帘布层的外圆周上并由多个橡胶组成具有帘线6（其中每个层布置有所述角度）的涂覆帘线层（带束层）7和位于带束层的外周上的胎面9。在这种情况下，由彼此相邻的两个橡胶涂覆层7之间布置由具有大于5重量份的短纤维的组合物或橡胶组成的橡胶片层10。这里，短纤维的平均直径小于1μm，比L / D或大于8，其中L表示短纤维的平均长度，D表示其平均直径。橡胶片层10的厚度设定为0.3〜1.0mm。

8. 发明专利

JPS59120501A PNEUMATIC TIRE 失效
公开(公告)号：JPS59120501A
公开(公告)日：1984-07-12
申请号：JP23102982
申请日：1982-12-28
申请人： BRIDGESTONE CORP
发明人： YAHAGI MASAHISA , MASUNAGA MIKIO , WATANABE SHIYUUICHI , TANAKA TSUTOMU
IPC分类号： B60C1/00 , B60C5/14
摘要： PURPOSE:To expand a range of the applicable temperature of a tubeless tire for heavy load with a layer of inner liners by forming said layer with three layers and also forming the medium layer solely with halogenated butyl polymer and the inner layer with NR compound. CONSTITUTION:An inner liner layer R is formed in three layers of an internal layer R1, external layer R3 and medium layer R2, and the internal layer R1 is arranged in the range of a tire shoulder, while it is composed of natural rubber of 15-60 weight part and, the rest, compound of halogenated butyl polymer. The medium layer R2, different from rubber part of a rubber compound of the external layer R3, is formed solely by halogenated butyl polymer. Thus, since rust on cord, lowering of adhesion or the like due to infiltration of moisture into the medium layer R2 are prevented and internal crack in the vicinity of a shoulder range in a cold district can also be prevented due to rubber composition of the inner layer R1, all-round use of the tire is possible through expansion of the range of the applicable temperature.

9. 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

10. 发明专利

JP2507288B2 失效
公开(公告)号：JP2507288B2
公开(公告)日：1996-06-12
申请号：JP23102982
申请日：1982-12-28
申请人： BRIDGESTONE CORP
发明人： YAHAGI MASAHISA , MASUNAGA MIKIO , WATANABE SHUICHI , TANAKA TSUTOMU
IPC分类号： B60C1/00 , B60C5/14
摘要： A pneumatic tire is disclosed, which comprises a carcass composed of at least one ply and an inner liner arranged inside the carcass and composed of plural rubber layers. In the tire of this type, the inner liner comprises at least three layers of an outermost layer adjacent to the carcass, an innermost layer facing the inner space of the tire and an intermediate layer interposed between the innermost and outermost layers. The innermost layer is composed of a rubber composition containing 15-60 parts by weight of natural rubber and the balance of a halogenated butyl polymer as a rubber component, while the intermediate layer is composed of a rubber composition containing only a halogenated butyl polymer as a rubber component, which is different from that of the outermost layer in the rubber component.

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