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公开(公告)号：ES2047120T3
公开(公告)日：1994-02-16
申请号：ES89308384
申请日：1989-08-17
Applicant: BRIDGESTONE CORP
Inventor： OHSHIMA KAZUO , WADA ICHIRO , ARAKI SHUNJI
Abstract: In the pneumatic radial tire, particular polyamide monofilament cords having an ellipsoidal shape in section are used in a radial carcass ply, whereby reductions of tire noise, rolling resistance and tire weight are achieved. Furthermore, such monofilament cords can be applied to a carcass ply for pneumatic bias tires for preventing the occurrence of air storing and improving tire performances.
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公开(公告)号：JP2004256015A
公开(公告)日：2004-09-16
申请号：JP2003049534
申请日：2003-02-26
Applicant: BRIDGESTONE CORP
Inventor： WADA ICHIRO
Abstract: PROBLEM TO BE SOLVED: To improve air permeation resistance without impairing peeling resistant force and fatigue crack resistance of toeguard and canvas chafer. SOLUTION: In this pneumatic tire provided with the toeguard, the toeguard is made of a rubber composition containing layered or planar inorganic filler. In this pneumatic tire provided with the canvas chafer, the canvas chafer is formed by coating the canvas with the rubber composition containing the layered or planar inorganic filler. COPYRIGHT: (C)2004,JPO&NCIPI
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公开(公告)号：JPH0331337A
公开(公告)日：1991-02-12
申请号：JP16383289
申请日：1989-06-28
Applicant: BRIDGESTONE CORP
Inventor： WADA ICHIRO , SAITO TADASHI , YANAMI KENJI
Abstract: PURPOSE:To provide the subject composition having a greatly improved heat resistance without losing the good stretchability of the rubber and useful for sports cars, etc., by employing a specific triazine derivative as a crosslinking agent and adjusting the combination and compounding ratio of vulcanization accelerators. CONSTITUTION:The objective composition comprises (A) 100 pts.wt. of one kind or more of rubber selected from styrene.butadiene rubber(SBR), SBR- natural rubber blend rubber containing >=70wt.% of the SBR and SBR-butadiene blend rubber containing >=70wt.% of the SBR, (B) 70-190 pts.wt. of carbon black, (C) 50-400 pts.wt. of a rubber softening agent (D), 0.1-5 pts.wt. of a triazine derivative of the formula having two SH groups and an amino group and a vulcanization accelerator comprising a combination of (E) tetramethylthiuram sulfide and (F) N-cyclohexyl-2-benzothiazolyl sulfide, a combination of the component F and (G) dibenzothiadyl disulfide or a combination of the components E, F and G.
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公开(公告)号：JPH0257405A
公开(公告)日：1990-02-27
申请号：JP20737188
申请日：1988-08-23
Applicant: BRIDGESTONE CORP
Inventor： OSHIMA KAZUO , WADA ICHIRO , ARAKI SHUNJI
Abstract: PURPOSE:To reduce noise, rolling resistance, and weight of a tire, by forming a reinforcing carcass ply cord arranged in the radial direction of a tire out of a polyamide monofilament cord having a elliptical section. CONSTITUTION:A tire comprises a tread part, a pair of side parts continued on both sides of the tread part, and a pair of bead parts formed on the inner circumference of the side parts. And the tire is reinforced with a carcass ply arranged carcass ply cords in the radial direction of the tire and a belt layer buried inside the tread surrounding the carcass ply. In the above-stated constitution, the carcass ply cord is formed out of a polyamide monofilament cord having a elliptical section. The occupancy ratio of the cord at a crown center part b/a is instituted to be 20%
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公开(公告)号：JPS63282368A
公开(公告)日：1988-11-18
申请号：JP11241287
申请日：1987-05-11
Applicant: BRIDGESTONE CORP
Inventor： WADA ICHIRO , INADA NORIO , IMAI ISAMU
IPC: D06M11/00 , D06M11/38 , D06M11/44 , D06M11/45 , D06M11/46 , D06M11/47 , D06M11/48 , D06M11/49 , D06M101/00 , D06M101/16 , D06M101/30 , D06M101/34 , D06M101/36
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Patent Agency Ranking
公开(公告)号：JPS62149983A
公开(公告)日：1987-07-03
申请号：JP28768285
申请日：1985-12-23
Applicant: BRIDGESTONE CORP
Inventor： WADA ICHIRO , OSHIMA KAZUO
IPC: C08J5/06 , D06M15/693 , D06M15/70 , D06M101/00 , D06M101/16 , D06M101/30 , D06M101/34
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公开(公告)号：JP2003191711A
公开(公告)日：2003-07-09
申请号：JP2001394278
申请日：2001-12-26
Applicant: BRIDGESTONE CORP
Inventor： WADA ICHIRO
Abstract: PROBLEM TO BE SOLVED: To provide a tire and its manufacturing method which realizes both durability and inner pressure holding performance at run-flat. SOLUTION: This tire provided with an inner liner is characterized in that a rubber component of an inner liner includes at least 10% by mass or more at a portion corresponding to a tire side part and a ratio of diene rubber is smaller at a portion corresponding to a tire tread part than the portion corresponding to the side. This is the manufacturing method of the timer with the inner liner characterized in that when a rubber composition is taken out from each of a plurality of tanks with various rubber components, extruded by a extruding machine, and then, the extruded composition is wound on a rotating support body so as to form an inner liner layer of the tire, the taken-out amount of the rubber composition is changed so that the rubber component of the inner liner has the above characteristics. COPYRIGHT: (C)2003,JPO
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公开(公告)号：JP2002088209A
公开(公告)日：2002-03-27
申请号：JP2000280391
申请日：2000-09-14
Applicant: BRIDGESTONE CORP
Inventor： WADA ICHIRO , UCHINO OSAMU
IPC: B60C5/14 , C08K3/04 , C08K5/17 , C08K5/54 , C08K5/541 , C08K7/00 , C08L21/00 , C08L23/22 , C08L23/28 , C08L71/03
Abstract: PROBLEM TO BE SOLVED: To provide a rubber composition for use in inner liners that allows pneumatic tires to have good air permeation resistance, resistance to fatigue from flexing and processability as well as improved low-temperature durability, and that makes it possible for the tire to reduce the weight, and to provide a pneumatic tire using the composition. SOLUTION: This rubber composition for use in inner liners comprises a rubber component composed of (A) 65-95 wt.% of a butyl rubber comprising >=40 wt.% of a halogenated butyl rubber, 5-25 wt.% of an epichlorohydrin rubber and 0-30 wt.% of a conjugated diene rubber, and (B) a layered or planar inorganic filler. A pneumatic tire is prepared by using the composition for an inner liner thereof.
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公开(公告)号：JP2002088208A
公开(公告)日：2002-03-27
申请号：JP2000053743
申请日：2000-02-29
Applicant: BRIDGESTONE CORP
Inventor： KAWAGUCHI YASUMI , WADA ICHIRO , NAKAMURA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To provide a rubber composition for use in inner liners of pneumatic tires with excellent air permeation resistance and improved processability, and to provide, by using the composition, an pneumatic tire that allows its inner liner to reduce the gauge to a great extent, while preserving the inner pressure preserving characteristics. SOLUTION: A rubber component comprising 40-100 wt.% of a halogenated butyl rubber and
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公开(公告)号：JPH11115415A
公开(公告)日：1999-04-27
申请号：JP27700997
申请日：1997-10-09
Applicant: BRIDGESTONE CORP
Inventor： WADA ICHIRO
Abstract: PROBLEM TO BE SOLVED: To prevent the generation of breakdown failure of a rubber due to a failure of peeling of bonding and high temperature, and to restrain the early abrasion by setting a ratio of the natural rubber and butadiene rubber as compo nent of a tread rubber within a specified range, and giving tensile stress and repulsive resilience to a specified physical property. SOLUTION: A tread rubber 7 has natural rubber NR and butadiene rubber BR as a rubber component within a range of ratio NR:BR at 40:60-10:90. These two kinds of rubber NR, BR are blended within this range so as to obtain a rubber component. The tread rubber 7 has tensile stress M100 at a range 2.0-4.9 MPa, and a large shearing distorsion in the tread circumferential direction to be applied to the tread rubber 7 at the time of emergency landing from high speed floating traveling can be restrained to an appropriate value. Furthermore, since the tread rubber 7 has repulsive resilience at 62% or more, heat to be generated in the tread rubber 7 at the time of emergency landing from the high speed floating traveling can be restrained to the appropriate quantity of heat generation.
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