WO2009072420A1 - Run-flat tire - Google Patents

Run-flat tire Download PDF

Info

Publication number
WO2009072420A1
WO2009072420A1 PCT/JP2008/071373 JP2008071373W WO2009072420A1 WO 2009072420 A1 WO2009072420 A1 WO 2009072420A1 JP 2008071373 W JP2008071373 W JP 2008071373W WO 2009072420 A1 WO2009072420 A1 WO 2009072420A1
Authority
WO
WIPO (PCT)
Prior art keywords
carcass
run
tire
flat tire
flat
Prior art date
Application number
PCT/JP2008/071373
Other languages
French (fr)
Japanese (ja)
Inventor
Fumikazu Yamashita
Original Assignee
Sumitomo Rubber Industries, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2007316105A external-priority patent/JP4635040B2/en
Priority claimed from JP2007316106A external-priority patent/JP4635041B2/en
Application filed by Sumitomo Rubber Industries, Ltd. filed Critical Sumitomo Rubber Industries, Ltd.
Publication of WO2009072420A1 publication Critical patent/WO2009072420A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/2003—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords
    • B60C9/2009—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords comprising plies of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/0083—Tyre tread bands; Tread patterns; Anti-skid inserts characterised by the curvature of the tyre tread
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
    • B60C17/0009—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor comprising sidewall rubber inserts, e.g. crescent shaped inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/28—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers characterised by the belt or breaker dimensions or curvature relative to carcass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C17/00—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor
    • B60C17/0009—Tyres characterised by means enabling restricted operation in damaged or deflated condition; Accessories therefor comprising sidewall rubber inserts, e.g. crescent shaped inserts
    • B60C2017/0054—Physical properties or dimensions of the inserts
    • B60C2017/0063—Modulus; Hardness; Loss modulus or "tangens delta"

Abstract

This aims to provide a run-flat tire (1) for improving a riding comfortableness while improving a run-flat durability. The run-flat tire (1) comprises a carcass (6), a belt layer (7) having two belt plies (7A and 7B) inside and outside of a tire radius, and a side-reinforcing rubber layer (11) having a substantially crescent section. The carcass (6) includes a carcass ply (6A) having carcass cords arrayed at an angle of 70 to 90 degrees with respect to the tire circumference direction and coated with topping rubber, and the carcass cords are made of aramid fiber cords having a twisting coefficient (T) of 0.50 to 0.70. The run-flat tire (1) further comprises a tread-reinforcing rubber layer (9) interposed between the belt layer (7) and the carcass (6) and having a hardness of 70 degrees or more and a loss tangent (tanδ) of 0.15 or less.
PCT/JP2008/071373 2007-12-06 2008-11-26 Run-flat tire WO2009072420A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007-316105 2007-12-06
JP2007316105A JP4635040B2 (en) 2007-12-06 2007-12-06 Run flat tire
JP2007316106A JP4635041B2 (en) 2007-12-06 2007-12-06 Run flat tire
JP2007-316106 2007-12-06

Publications (1)

Publication Number Publication Date
WO2009072420A1 true WO2009072420A1 (en) 2009-06-11

Family

ID=40717602

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/071373 WO2009072420A1 (en) 2007-12-06 2008-11-26 Run-flat tire

Country Status (1)

Country Link
WO (1) WO2009072420A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3135501A1 (en) * 2015-08-24 2017-03-01 Sumitomo Rubber Industries, Ltd. Airless tire
CN111422010A (en) * 2020-03-26 2020-07-17 万达集团股份有限公司 Anti-out-of-control tire under pressure loss condition
WO2021217000A1 (en) * 2020-04-24 2021-10-28 Otr Wheel Engineering, Inc. Tire and wheel assembly for machine
EP4026706A1 (en) * 2021-01-07 2022-07-13 Sumitomo Rubber Industries, Ltd. Pneumatic tire

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0825923A (en) * 1994-07-15 1996-01-30 Sumitomo Rubber Ind Ltd Safety tire
JP2002012004A (en) * 2000-06-28 2002-01-15 Sumitomo Rubber Ind Ltd Pneumatic tire
JP2004299639A (en) * 2003-04-01 2004-10-28 Yokohama Rubber Co Ltd:The Pneumatic tire
JP2004359145A (en) * 2003-06-06 2004-12-24 Bridgestone Corp Run flat tire
JP2005219512A (en) * 2004-02-03 2005-08-18 Yokohama Rubber Co Ltd:The Pneumatic tire
JP2005297954A (en) * 2004-04-06 2005-10-27 Goodyear Tire & Rubber Co:The Pneumatic run-flat tire
JP2007069890A (en) * 2005-08-08 2007-03-22 Sumitomo Rubber Ind Ltd Run flat tire
JP2007161071A (en) * 2005-12-13 2007-06-28 Sumitomo Rubber Ind Ltd Run flat tire
JP2007302097A (en) * 2006-05-10 2007-11-22 Sumitomo Rubber Ind Ltd Pneumatic tire
WO2008149725A1 (en) * 2007-06-01 2008-12-11 Sumitomo Rubber Industries, Ltd. Pneumatic tire

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0825923A (en) * 1994-07-15 1996-01-30 Sumitomo Rubber Ind Ltd Safety tire
JP2002012004A (en) * 2000-06-28 2002-01-15 Sumitomo Rubber Ind Ltd Pneumatic tire
JP2004299639A (en) * 2003-04-01 2004-10-28 Yokohama Rubber Co Ltd:The Pneumatic tire
JP2004359145A (en) * 2003-06-06 2004-12-24 Bridgestone Corp Run flat tire
JP2005219512A (en) * 2004-02-03 2005-08-18 Yokohama Rubber Co Ltd:The Pneumatic tire
JP2005297954A (en) * 2004-04-06 2005-10-27 Goodyear Tire & Rubber Co:The Pneumatic run-flat tire
JP2007069890A (en) * 2005-08-08 2007-03-22 Sumitomo Rubber Ind Ltd Run flat tire
JP2007161071A (en) * 2005-12-13 2007-06-28 Sumitomo Rubber Ind Ltd Run flat tire
JP2007302097A (en) * 2006-05-10 2007-11-22 Sumitomo Rubber Ind Ltd Pneumatic tire
WO2008149725A1 (en) * 2007-06-01 2008-12-11 Sumitomo Rubber Industries, Ltd. Pneumatic tire

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3135501A1 (en) * 2015-08-24 2017-03-01 Sumitomo Rubber Industries, Ltd. Airless tire
CN111422010A (en) * 2020-03-26 2020-07-17 万达集团股份有限公司 Anti-out-of-control tire under pressure loss condition
WO2021217000A1 (en) * 2020-04-24 2021-10-28 Otr Wheel Engineering, Inc. Tire and wheel assembly for machine
EP4026706A1 (en) * 2021-01-07 2022-07-13 Sumitomo Rubber Industries, Ltd. Pneumatic tire

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