-
公开(公告)号：JPH08156512A
公开(公告)日：1996-06-18
申请号：JP33068694
申请日：1994-12-07
Applicant: BRIDGESTONE CORP
Inventor： INADA NORIO , SHOYAMA YOSHINOBU
Abstract: PURPOSE: To satisfy the overload high speed durability of a bead part and the separation durability of a ply end part by setting the intermediate elongation percentages under a specified load of a belt ply cord and a carcass ply cord taken out from a tire to specified values and a specified relation, respectively. CONSTITUTION: The intermediate elongation percentages b%, c% under a load of 2.68g/d of the belt ply cord and carcass ply cord taken out from a tire having a carcass layer 1 consisting of a ply having an organic fiber code buried therein and a belt layer 3 are set to values satisfying the following conditions; 6
-
公开(公告)号：JPH06143914A
公开(公告)日：1994-05-24
申请号：JP29456392
申请日：1992-11-02
Applicant: BRIDGESTONE CORP
Inventor： SAWADA HIROKI , INADA NORIO
Abstract: PURPOSE:To provide a pneumatic radial tire in which low fuel consumption is achieved and also bead fracture is prevented even against an abnormal external force by providing a light bead, in which aromatic polyamide fiber with the strength of the predetermined value is completely coated by polyamide resin to be held at the intervals by insulation rubber. CONSTITUTION:A bead wire is made of a complex cord consisting of aromatic polyamide fiber with the fiber strength of 18g/D or more and polyamide resin, in other words, aromatic polyamide fiber 1 serving as a core material is completely coated by thermoplastic polyamide resin 2. A light bead, in which the fiber volume ratio in one bead wire is set to be 30-70%, and resin coated wire is held at intervals by insulation rubber with the rubber hardness of 82-86, is used. In this way, low fuel consumption according to a tire lightening is achieved by lightening of a tire bead. In addition, fracture of the bead is also prevented even against an abnormal external force, as the tire bead part is soft and easily twisted.
-
公开(公告)号：JPH03292203A
公开(公告)日：1991-12-24
申请号：JP9409790
申请日：1990-04-11
Applicant: BRIDGESTONE CORP
Inventor： KIKUCHI MICHITSUGU , INADA NORIO
Abstract: PURPOSE:To improve durability against high speed remarkably by reinforcing at least an end of a belt layer more with a cord layer between the belt layer and a tread layer, and using the material made of the specified component including naphthalate and having the compound structure which consists of a core and a sheath as a cord member of a cord layer. CONSTITUTION:A tire has two belt layers 2, 3 of which cord arrangement are crossed at 10 - 40 deg. against the circumferential direction of the tire. In this case, one cord layer 5 is provided between the belt layer 2 near the tread face and a tread layer 1. The core component made of compound fiber having the compound structure, which consists of a core and a sheath, and to be used for reinforcing the cord layer 5 is practically made of the mixture component of polyester mainly composed of polyethylene terephthalate and polyethylene - 2, 6 - naphthalate. A mixture ratio of polyester mainly composed of polyethylene terephthalate among the core component is set at 30 - 90 weight %. Furthermore, a ratio of the compound fiber among the core component is set at 30 - 80 weight %.
-
公开(公告)号：JPH0382608A
公开(公告)日：1991-04-08
申请号：JP21611589
申请日：1989-08-24
Applicant: BRIDGESTONE CORP
Inventor： IWASAKI SHIZUO , INADA NORIO , TAKASE KIYOSHI
Abstract: PURPOSE:To improve steering stability and high-speed durability by providing a belt layer with 6,6-nylon fiber cords on a front wheel tire, and providing a belt layer with high-strength high-elasticity polyvinyl alcohol fiber cords on a rear wheel tire. CONSTITUTION:A tire has a pair of bead sections and a carcass layer folded around them and having cords intersecting a tire equatorial plane at the angle 90-75 deg.. A belt layer with 6,6-nylon fiber cords intersecting the equatorial plane at the angle 10-30 deg. is provided on the front wheel tire. A belt layer with high- strength high-elasticity polyvinyl alcohol fiber cords intersecting the equatorial plane at the angle 0-10 deg. is provided on the rear wheel tire. The dynamic elastic ity E' of cords of the belt layer for the rear wheel at 100 deg.C and 30Hz is set to satisfy the following equation: 0.4X10 dyn/cm dyn/cm .
-
Patent Agency Ranking
公开(公告)号：JPH02249705A
公开(公告)日：1990-10-05
申请号：JP22936789
申请日：1989-09-06
Applicant: BRIDGESTONE CORP
Inventor： SATO MASANORI , OSHIMA KAZUO , IWASAKI SHIZUO , INADA NORIO
IPC: B60C9/00 , D01F6/14 , D02G3/48 , D06M13/02 , D06M13/11 , D06M13/244 , D06M13/282 , D06M15/41 , D06M101/00 , D06M101/16 , D06M101/18
Abstract: PURPOSE:To restrict any reduction in the strength of a cord in practical travelling in the case of polyvinylalcohol synthetic fiber cord for reinforcing pneumatic tires by setting the strength of the cord so as to meet a specific relationship of a specific twist coefficient. CONSTITUTION:A pneumatic tire is provided with a polyvinylalcohol synthetic fiber (PVA fiber) cord reinforced belt 1 and a steel cord reinforced belt 2. In this case, filaments of the PVA fiber cord are bridged by a bridging material. When a specific twist coefficient of the PVA fiber cord is expressed by NT, the strength S of the PVA fiber cord taken out from a tire is set to meet the following relationship: S>=14.5-12 NT. Further, when the PVA fiber cord is melted in dimethylsulfoxide at temperature of 120 deg.C, insoluble matters are set at above 5 weight %. As a result, any reduction in the strength of the PVA fiber cord can be restricted even after paratical travelling.
-
公开(公告)号：JPS6339442B2
公开(公告)日：1988-08-05
申请号：JP18481682
申请日：1982-10-21
Applicant: BRIDGESTONE CORP
Inventor： IMAI ISAMU , OOSHIMA KAZUO , INADA NORIO
-
公开(公告)号：JPS62163806A
公开(公告)日：1987-07-20
申请号：JP357286
申请日：1986-01-13
Applicant: BRIDGESTONE CORP
Inventor： IMAI ISAMU , YOTSUMOTO TOSHIHIRO , INADA NORIO
Abstract: PURPOSE:To improve durability, by providing carcass card layers and belt cord layers, having specific construction respectively, and using a cord combined material, in which an impregnation agent enveloping a filament of specific fiber is changed into resin while a tire is in vulcanization, as a strand cord in each of these layers. CONSTITUTION:A tire has one or more pairs of right and left bead wires, and the tire provides carcass cord layers 12, which are fixed turning back around the periphery of each bead wire and having an angle of 75-90 deg. with respect to a peripheral direction of the tire, while belt cord layers 11 having an angle of 0-30 deg. with respect to the peripheral direction of the tire. And a cord combined material, which envelops each filament of aromatic polyamide and total aromatic polyester fiber or polyvinyl alcohol fiber of strength 15g/d or more in an impregnation agent, mainly composed of rubber components, forming a matrix further holding the impregnation agent in a soft quantity before vulcanization of the tire to be changed into resin during the vulcanization, is used as a strand cord for each of the above cord layers 11, 12.
-
公开(公告)号：JPS62116302A
公开(公告)日：1987-05-27
申请号：JP25679985
申请日：1985-11-18
Applicant: Bridgestone Corp
Inventor： IMAI ISAMU , INADA NORIO , YAMADA SHIGEKI , KATO KENSHIRO
Abstract: PURPOSE: To aim at lightweightiness as well as to heighten a cord fatigue level and improve durability, by forming each cord available for belt cord ply and a carcass cord ply composed of plural layers each with the specified aromatic polyamide fiber.
CONSTITUTION: This heavy-duty vehicle pneumatic tire is provided with a belt cored ply (belt) 1 consisting of plural layers disposing one continuous cord parallelly in the circumferential direction and a carcass cord ply (carcass) 2 consisting of plural cord layers disposed at a cord angle of 90W75° to the cord of the said ply 1. And, each cord used for the belt 1 and the carcass 2 is formed by an aromatic polyamide fiber composed of a copolymer between poly paraphenylenterephthalamide and poly 3,4'-diphenyletherterephthalamide. With this constitution, this tire is lightweight and its cord fatigue level is improvable, so that the promotion of radial-ply tire for heavy-duty vehicles of a superhigh speed electric car or the like.
COPYRIGHT: (C)1987,JPO&JapioAbstract translation: 目的：通过形成每条具有特定芳香族聚酰胺纤维的多层皮带帘布层和每个由多层构成的胎体帘布层帘线，可以实现轻量化，提高帘线疲劳度，提高耐久性。 构成：该重型车辆用充气轮胎具有由多个在圆周方向平行设置一个连续帘线的多个层组成的带芯层（带）1和由多个帘线层组成的胎体帘布层（胎体）2， 线角度为90-75度 并且，用于带1和胎体2的每个帘线由由聚对苯二甲酰对苯二胺和聚3,4'-二苯基醚对苯二甲酰胺之间的共聚物组成的芳族聚酰胺纤维形成。 通过这种结构，该轮胎重量轻，其疲劳强度提高，能够促进超高速电动汽车等的重型车辆的径向帘布层轮胎。
-
公开(公告)号：JPS6189106A
公开(公告)日：1986-05-07
申请号：JP21033684
申请日：1984-10-09
Applicant: Bridgestone Corp
Inventor： IMAI ISAMU , INADA NORIO
CPC classification number: B60C9/0042
Abstract: PURPOSE:To aim at enhancing the durability and drive-feeling of a tire, by reinforcing a tire with a belt which is formed such that fiber filments are twisted with a twisting coefficient of 0.2-0.40 to form cords and the cords are embedded in a rubber material. CONSTITUTION:Fiber filaments of polyethylene 1,2-diphenoxyethane-p,p'- dicarboxylate which are exhibited by Formula I, having a specific weight of greater than 1.340, preferably from 1.340-1.360 and an ultimate viscosity of greater than 0.75, are twisted with a twisting coefficient of 0.2-0.20, which is exhibited by Formula II, to be formed into cords. Further, when these cords are embeded in a rubber material which is obtained by being processed under a specific condition, to form a belt, they are embeded in the rubber material under such a condition that [cord diameter (mm) X beat number (cord number/5 cm) width] is below 45deg., and the angle of the cords is set to be 0-30deg. with respect to the pripheral direction of the tire. Thereby it is possible to tires having a durability equal to that of conventional steel cord tires.
Abstract translation: 目的：为了提高轮胎的耐久性和驾驶感，通过使用带状物加强轮胎，使得纤维屑以0.2-0.40的扭转系数扭转形成帘线，帘线嵌入 橡胶材料。 构成：由式I显示的具有大于1.340，优选1.340-1.360，最终粘度大于0.75的比重的聚乙烯1,2-二苯氧基乙烷-p，对二甲氧基乙烷的纤维长丝被扭曲 扭转系数为0.2-0.20，由式II显示，形成绳。 此外，当将这些帘线嵌入通过在特定条件下加工而获得的橡胶材料中以形成带时，它们以[帘线直径（mm）×节拍数（帘线）的方式嵌入橡胶材料中 数字/ 5厘米）宽度]低于45度，帘线的角度设定为0-30度。 关于轮胎的主要方向。 因此，可以轮胎具有与常规钢帘线轮胎相同的耐久性。
-
-
-
-
-
-
-
-
Search Results
79
records
(took 0.024 seconds)
