-
公开(公告)号：JPH0367705A
公开(公告)日：1991-03-22
申请号：JP20531889
申请日：1989-08-08
Applicant: BRIDGESTONE CORP
Inventor： TANAKA MAKOTO , SATO SUSUMU
Abstract: PURPOSE:To prevent current from entering from a tire to a rim by in a new transportation vehicle to which power is supplied from a travelling road by forming a top tread and a side tread of the tire of rubber whose electric resistance is above specific value. CONSTITUTION:A tire 10 used for a new transportation vehicle such as a monorail has a top tread 15 disposed in a radially outermost side portion. A rubber layer 20 is disposed at the top tread side 15 of a carcass 18 at an outermost side portion. Both end portions in the direction of width of the tire of the rubber layer 20 respectively reach side treads 22 provided at tire side portions. In the above mentioned construction, the top tread 15 and the side tread 22 are respectively formed of the same and specific rubber material. This rubber material is formed by blending 30% of carbon having average particle side of 23mum relative to weight of rubber and setting electric resistance to above 160KOMEGA, for example, 100MOMEGA.
-
公开(公告)号：JPS63291705A
公开(公告)日：1988-11-29
申请号：JP12527287
申请日：1987-05-22
Applicant: BRIDGESTONE CORP
Inventor： TANAKA MAKOTO , MIYAMOTO KENJI , SHIMADA NORIHIRO
Abstract: PURPOSE:To make rigidity in the vicinity of open sipes on the end parts of ribs uniform and prevent lopsided abrasion by restricting the amplitude of the zigzag form of a main groove and its groove pitch with respect to the pitch of open sipes which cross a tread having plural ribs. CONSTITUTION:A tire has a tread 15 having plural wide main grooves 12 which extend zigzag in the peripheral direction and plural ribs 13 partitioned by the main grooves 12. And, open sipes 16 are cut across the tread 15 between both tread ends 15a. In this case, the sipe pitch Ps of the open sipes 16 with respect to the peripheral direction C of tire is set at 10-40 mm. Also, the amplitude V12 of the zigzag form of the main groove 12 with respect to the width of tire is set at 1-10 mm. And, the ratio of the groove pitch PG with respect to the peripheral direction C of tire of the main groove 12 to the sipe pitch Ps of the open sipes 16 is set within the range of 1.5-20.
-
公开(公告)号：JPS63279905A
公开(公告)日：1988-11-17
申请号：JP11544887
申请日：1987-05-11
Applicant: BRIDGESTONE CORP
Inventor： MIYAMOTO KENJI , TANAKA MAKOTO , SHIMADA NORIHIRO
Abstract: PURPOSE:To prevent the occurrence of deviated wear by a method wherein, in a flat tyre for a vehicle, a plurality of ribs are formed by a plurality of wide main grooves, and a number of shallow cuts, cut down in short of the main groove, are formed at equal distances in a rib next to the outermost rib in an axial direction. CONSTITUTION:Five ribs 25 are formed in a wide main groove 24 in a meandering shape in a tread 22. A width W24 of the main groove 24 is set to approximate 2-10% of a tread width W22. A number of shallow cuts 27 are formed at equal intervals in a rib 25B, being next to an outermost rib in the axial direction of a tyre, and in a central part 25a in an axial direction of the rib 25B away from the main groove 24. In the shallow cut 27, a projection length W27 in the axial direction of a tyre is set to 10-70% of a rib width W25B, a depth to 30-100% of the depth of the outermost main groove 24A, an angle with an axial direction to approximate 15 deg., and a circumferential interval to 3-20mm. This constitution enables prevention of the occurrence of deviated wear.
-
公开(公告)号：JPS6354565B2
公开(公告)日：1988-10-28
申请号：JP18782382
申请日：1982-10-26
Applicant: BRIDGESTONE CORP
Inventor： TANAKA MAKOTO , MYAMOTO KENJI , MAKINO SHIGEO , URA YASUYUKI
-
公开(公告)号：JPS62152904A
公开(公告)日：1987-07-07
申请号：JP29185985
申请日：1985-12-26
Applicant: BRIDGESTONE CORP
Inventor： TANAKA MAKOTO , NAKAMURA MASAO , MIYAMOTO KENJI
Abstract: PURPOSE:To enable durability of a tyre to be compatible with cornering power characteristics thereof, by a method wherein a belt, substantially surrounding a carcass throughout the total width of a tread part, is formed through combination of a main and an auxiliary belt layer, aligned at their respective specified cord angles with the quator of a tyre. CONSTITUTION:A case body, formed with a tread part T, side wall parts S, and bead part, is reinforced by a radial cord-aligned carcass C and a belt B formed with a cord layer in at least 2 layers substantially surrounding the carcass C throughout the total width of the tread part T. Flatness is set to 0.9 or less. In the radial tyre, the belt B is formed through combination of a main belt layer B1 in at least one layer spirally aligned at a cord angle of approxialmately 0 deg. with the quator of the tyre and an auxiliary belt layer B2 in a single layer inclinably aligned at a cord angle of 20-40 deg. with the quator radially internally of the tyre of the main belt layer B1.
-
Patent Agency Ranking
公开(公告)号：JPS58177701A
公开(公告)日：1983-10-18
申请号：JP6087282
申请日：1982-04-14
Applicant: Bridgestone Corp
Inventor： TANAKA MAKOTO , MIYAMOTO KENJI , MATSUDA AKIRA , URA YASUYUKI , HIRASE TOSHISABUROU
IPC: B60B21/02 , B60B21/10 , B60C7/10 , B60C15/024
CPC classification number: B60B21/10
Abstract: PURPOSE:To prevent the bead part of a tire from causing damage rubbed by a rim, by mounting the bead part between a flange and protrusion under the initial compressive stress. CONSTITUTION:A carcass 5 is rolled around a bead ring 3 from the inside to the outside, and a breaker 6 is arranged to a crown part of the carcass 5. A tire T is assembled to a rim R of same kind for a tubeless tire equipped with a pair of flanges F and a pair of bead seats S tapered about 15 deg., after a tire bead part 4 is set to the seat S of the regular rim, elastic crude fluid of urethane rubber is filled and a hardened elastic material 7 is charged in an internal cavity to form an assembly unit of the tire rim charged with the elastic material. A protrusion P is provided to the seat S of the rim R, for instance, a distance W0 from a nominated diameter designated point Q of the vertex, base width W1 and height h1 are set respectively 30mm., 33mm. and 8mm..
Abstract translation: 目的：为了防止轮胎的胎圈部分引起由轮辋摩擦的损伤，通过在初始压缩应力下将胎圈部分安装在法兰和突起之间。 构成：将胎体5从胎圈环3内侧向外侧卷绕，将断路器6配置在胎体5的胎冠部。轮胎T组装到与无内胎轮胎相同种类的轮辋R上 装备有一对法兰F和一对锥形约15度的胎圈座S，在将轮胎胎圈部分4设置到正常轮辋的座椅S之后，填充聚氨酯橡胶的弹性粗流体和硬化的弹性材料 7被填充在内部空腔中以形成装载有弹性材料的轮胎边缘的组装单元。 突起P设置在轮辋R的座椅S上，例如，从顶点的指定直径指定点Q的距离W0，基底宽度W1和高度h1分别设定为30mm，33mm。 和8mm ..
-
公开(公告)号：JPH1148263A
公开(公告)日：1999-02-23
申请号：JP20630697
申请日：1997-07-31
Applicant: BRIDGESTONE CORP
Inventor： TANAKA MAKOTO
Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a pneumatic tire to manufacture the tire capable of preventing growth of a crack to be generated at a bottom of a main groove. SOLUTION: In an unvulcanized tread member 10 to become a tread after vulcanization molding, a part of base tread rubber member 14 opposed to protrusions 20 for forming main grooves of a mold 16 is formed thinner than at least opposed parts between the protrusions 20 of the mold 16. When a green tire 1 using the member 10 is vulcanization molded by the mold 16, a thickness of a cap tread rubber member 12 at a bottom of the main groove of the tire becomes 1 mm or more. Since the member 12 contains more absolute amount of age resistor near the bottom of the groove than that at less tan 1 mm of the thickness of the bottom of the groove, even when the resistor of the part is transferred to a side of the member 14, ozone crack preventing effect can be maintained.
-
公开(公告)号：JPH09164811A
公开(公告)日：1997-06-24
申请号：JP33019195
申请日：1995-12-19
Applicant: BRIDGESTONE CORP
Inventor： TANAKA MAKOTO
Abstract: PROBLEM TO BE SOLVED: To provide a pneumatic radial tire which is capable of being used in all seasons successively. SOLUTION: A tread 22 is made of a cap base structure, a cap part is formed out of a foamed rubber whose foamed ratio is in a range of 15-23%, and its thickness is made within a range of 30-70% of the groove depth of a main groove 18. A base rubber 16 is a foamed rubber whose foaming ratio is 5% or less or non-foamed rubber. Sipes 22 which extend in the crossing direction to the circumferential direction of a tire are formed at tread land part 12A-D and are located where the bottom part is within a range of 0.5-3.0mm to a base side 16 from a boundary surface of the cap part 14 and the base part 16. It is thus possible to attain high characteristics on an icy road surface by an edge effect through babbles appearing on a grounding surface, water absorbing action in the grounding surface, and the edge effect of the sipe.
-
公开(公告)号：JP2538858B2
公开(公告)日：1996-10-02
申请号：JP13016184
申请日：1984-06-26
Applicant: BRIDGESTONE CORP
Inventor： TANAKA MAKOTO , MYAMOTO KENJI , URA YASUYUKI
-
公开(公告)号：JPH04358902A
公开(公告)日：1992-12-11
申请号：JP13408991
申请日：1991-06-05
Applicant: BRIDGESTONE CORP
Inventor： TANAKA MAKOTO
Abstract: PURPOSE:To prevent the strength of a core from lowering due to the partial twist returning phenomenon of a down ply. CONSTITUTION:A ply end rubber 30 is disposed in a guide wheel pneumatic radial tire for track traveling vehicle 10 adjacent to on output side end part 14A in the diametrical direction of the first ply 14 and along with the outer peripheral direction as a rubber member. The ply end rubber 30 consists of the same kind of rubber as the respective ply coating rubber of the first ply 14, the second ply 16, and the second ply 18, for example, rubber with JIS (Japanese Industrial Standard) hardness of 50-75, and resilience off more than 50. Besides, the thickness M1 of the ply end rubber 30 is set at 0.5-1.5 times of the thickness M2 of the outer side end part 14A in the diametrical direction of the first ply 14, and the width W in the diametrical direction of the ply end rubber 30 is set at 2-15 times of the thickness M2 of the outer side end part 14A in the diametrical direction of the first ply 14.
-
-
-
-
-
-
-
-
-
Search Results
61
records
(took 0.026 seconds)
