-
公开(公告)号：JP2561672B2
公开(公告)日：1996-12-11
申请号：JP19045787
申请日：1987-07-31
Applicant: BRIDGESTONE CORP
Inventor： MIURA AKIO , SUGAWARA TOSHIO
-
公开(公告)号：JPS6485384A
公开(公告)日：1989-03-30
申请号：JP24109987
申请日：1987-09-26
Applicant: BRIDGESTONE CORP
Inventor： MIURA AKIO , SUGAWARA TOSHIO
Abstract: PURPOSE: To obtain a steel cord for tire belt reinforcement, having a special structure and characteristic, and providing improved durability to a tire while keeping good driving stability in turning at a high-speed, driving properties, braking properties, or the like. CONSTITUTION: This steel cord obtained by twisting 3-4 strands obtained by twisting 5-8 steel filaments around a core composed of 3 steel filaments together as a sheath to provide the strand, in the same direction as that of the sheath layer has the filament diameters regulated so that the diameter of at least one filament of the core may be 0.75-0.90 time as much as that of another filament constituting the cord, and any diameter of the filaments may be within the range of 0.05-0.10 mm, and has
-
公开(公告)号：JPS6436502A
公开(公告)日：1989-02-07
申请号：JP19045787
申请日：1987-07-31
Applicant: BRIDGESTONE CORP
Inventor： MIURA AKIO , SUGAWARA TOSHIO
Abstract: PURPOSE:To promote the improvement or the like of cord breaking resistance of a metal cord in a tire reduced in its weight and rolling resistance by coating the belt reinforcing metal cord with specific rubber wherein a 100% modulus value after vulcanization is higher than that of the embedded rubber. CONSTITUTION:A tire 1 provides a carcass layer 4 stopped in its both end parts by a pair of bead cores 2, 3 being deformed into a toroidal shape and a belt layer 5 or the like arranged outside the carcass layer 4 in its radial direction. The tire 1 forms the belt layer 5 from a number of mutually overlapped sheets of belt plies 10 while each belt ply 10 from coating rubber 11 and many reinforcing steel cords 13 embedded in the coating rubber 11 extending parallelly with a tire equatorial surface. Here the belt ply 10 is formed coating the cord 13, consisting of a steel filament 15, with rubber 14 of specific high elastic modulus.
-
公开(公告)号：JPS63134308A
公开(公告)日：1988-06-06
申请号：JP27879086
申请日：1986-11-25
Applicant: BRIDGESTONE CORP
Inventor： MIURA AKIO , WATANABE YOICHI , NISHIZAWA KUNINORI
Abstract: PURPOSE:To improve the rolling resistance and durability by specifying the between-center distance of filaments, arrangement of metal cords, and the ratio between the tread width and grounded width of a tread. CONSTITUTION:Inner and outer belt ply layers 2 and 3 are arranged outside a carcass ply 1, and the vertical component of the distance between the contiguous filaments 4 and 5 out of a pair of metal cords opposed inside and outside the belt ply layers 2 and 3 is set to L. In this case, each between-center distance of the longest and shortest filaments is set to the following relation: Lmax>=1.05d, Lmin>=d, and Lmax/Lmin>=1.05. Further, the metal cords having a specific twist pitch and elongation are arranged so that the vertical component of the shortest distance between filaments is set within a specific range. Further, the ratio of the belt width B to the grounded width H of the tread is set to 1.2 or less.
-
公开(公告)号：JPH09296375A
公开(公告)日：1997-11-18
申请号：JP10880096
申请日：1996-04-30
Applicant: UNITIKA LTD , BRIDGESTONE CORP
Inventor： TSUJIMURA HIDEYUKI , NIIKURA KATSUYOSHI , MORI ATSUSHI , IZUMIMOTO TAKAHARU , MIURA AKIO , IWASAKI SHINICHI
IPC: D01F6/86 , D01F11/08 , D06M13/02 , D06M13/224 , D06M15/555 , D06M101/00 , D06M101/16 , D06M101/30 , D06M101/32
Abstract: PROBLEM TO BE SOLVED: To obtain the subject polyester fiber rapidly dispersible when kneaded into a molten rubber serving as a rubber modifier. SOLUTION: This non-crimped short-cut polyester fiber >=220 deg.C in melting point has the following characteristics: fiber length (L) is 1-10mm; single fiber fineness (d) is 5-40 denier; satisfying the following relationship: L
-
Patent Agency Ranking
公开(公告)号：JPH0940789A
公开(公告)日：1997-02-10
申请号：JP19287595
申请日：1995-07-28
Applicant: BRIDGESTONE CORP
Inventor： IZUMIMOTO TAKAHARU , NAITO TOSHIO , IWASAKI SHINICHI , MIURA AKIO
Abstract: PROBLEM TO BE SOLVED: To prevent a composite material comprising an elastic matrix and fibers from cracking and enable the composite material to have improved durability and be prevented from suffering a decrease in strength, and to obtain a pneumatic tire and a belt both having excellent properties by using the composite material. SOLUTION: The composite material is obtained by adding organic synthetic or other fibers having a length of 0.1-100mm and a diameter of 1-150μm to a matrix selected among crosslinked rubbers, thermoplastic elastomers, foams of these, and the like in an amount of 0.1-80vol.% based on the matrix. The projected image of each fiber has neither a right-angle nor acute-angle part at one or each end.
-
公开(公告)号：JPS6485383A
公开(公告)日：1989-03-30
申请号：JP24109887
申请日：1987-09-26
Applicant: BRIDGESTONE CORP
Inventor： MIURA AKIO , SUGAWARA TOSHIO
Abstract: PURPOSE: To obtain a steel cord for tire belt reinforcement, having a special structure and characteristic, and providing improved durability to a tire while keeping good driving stability in turning at a high speed, driving properties, braking properties, or the like. CONSTITUTION: This steel cord obtained by twisting 3-4 strands obtained by twisting (n+5)-(n+6) steel filaments around a core composed of 2-3 (which is represented by n) steel filaments together as a sheath to provide the strand, in the same direction as that of the sheath layer has the filament diameter regulated so that the diameter of the sheath layer may be 1.10-1.30 times as much as that of the core layer, and both the diameters may be within the range of 0.05-0.10 mm, and has
-
公开(公告)号：JPS63154404A
公开(公告)日：1988-06-27
申请号：JP30350386
申请日：1986-12-18
Applicant: BRIDGESTONE CORP
Inventor： MIURA AKIO , TAKAGI HIROHIKO
Abstract: PURPOSE:To prevent the local deformation and buckling fatigue or metal cords and improve steering stability or the like by forming the metal cord of a belt layer in a 1Xn structure with at least three metal filaments twisted and specifying its ductility. CONSTITUTION:A tire main section is constituted of a tread 2 extended in the tire peripheral direction and two belt layers 3 arranged on the radial inside of the tread 2. The belt layers 3 are formed with steel cords 8 buried in belt buried rubber. In this case, the steel cord 8 is formed in a 1Xn structure bundle with at least three steel filaments 12 twisted, and the ductility P1 and P2 when loads of 5kg and 2kg are applied to one cord are set within the range shown by Equation I respectively. The elastic modulus of the buried rubber 7 when extended 50% after vulcanization is set to 10-30kg/cm. In addition, both ends of the belt layer 3 are covered with a reinforcing rubber layer 10 made of a specific rubber composition material.
-
公开(公告)号：JP2521271B2
公开(公告)日：1996-08-07
申请号：JP27879086
申请日：1986-11-25
Applicant: BRIDGESTONE CORP
Inventor： MIURA AKIO , WATANABE YOICHI , NISHIZAWA KUNINORI
-
公开(公告)号：JPS6485382A
公开(公告)日：1989-03-30
申请号：JP24109787
申请日：1987-09-26
Applicant: BRIDGESTONE CORP
Inventor： MIURA AKIO , SUGAWARA TOSHIO
Abstract: PURPOSE: To prevent the decrease of durability while keeping driving stability in cornering, driving and braking properties by improving the penetration of rubber into the cord under a specific steel twist structure, and regulating the physical properties of the cord so as to satisfy a prescribed relation. CONSTITUTION: This steel cord is obtained by twisting 3-4 strands obtained by twisting (n+3)-(n+5) steel filaments (n is the number of steel filaments of a strand core) around the strand core composed of 2-3 steel filaments together to provide a strand-sheath layer, in the same direction as that of the strand- sheath layer. The wire diameters of the whole steel filaments are same and within the range of 0.05-0.10 mm, and the obtained steel cord has
-
-
-
-
-
-
-
-
-
Search Results
14
records
(took 0.037 seconds)
