JPS5695708A - Penumatic safety tire improved in run-flat and wet performance - Google Patents

Penumatic safety tire improved in run-flat and wet performance

Info

Publication number
JPS5695708A
JPS5695708A JP17059479A JP17059479A JPS5695708A JP S5695708 A JPS5695708 A JP S5695708A JP 17059479 A JP17059479 A JP 17059479A JP 17059479 A JP17059479 A JP 17059479A JP S5695708 A JPS5695708 A JP S5695708A
Authority
JP
Japan
Prior art keywords
rebound elasticity
run
flat
wet performance
penumatic
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP17059479A
Other languages
Japanese (ja)
Inventor
Fumio Banba
Yoshio Kaneko
Shinji Shiozawa
Yoshihiro Hayakawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
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
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP17059479A priority Critical patent/JPS5695708A/en
Publication of JPS5695708A publication Critical patent/JPS5695708A/en
Pending legal-status Critical Current

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

PURPOSE: To control generation of heat and prevent thermal deterioration, by setting the hardness, tensile stress and rebound elasticity of tire rubber in a preset range, and to improve the run-flat and wet performance of the tire, by using a double-layered tread.
CONSTITUTION: Rubber of a side wall 5 is reinforced by material having a property of at least 70°C in JIS hardness, above 10kg/cm2 in tnesile stress (Mod 25) after a 24hr long ageing test in an inactive environment at 140°C±1°C and above 65% in rebound elasticity using a Dunlop tripsometer. The inner layer, facing a belt layer of a tread 6 is made of elastic material with at least 55° in JIS hardness and above 70% in rebound elasticity, while the outer layer on the side separated from belts 10, 11 is made of elastic material with below 65% in rebound elasticity, the volumetric ratio of both layers being set at below 1.0.
COPYRIGHT: (C)1981,JPO&Japio
JP17059479A 1979-12-28 1979-12-28 Penumatic safety tire improved in run-flat and wet performance Pending JPS5695708A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17059479A JPS5695708A (en) 1979-12-28 1979-12-28 Penumatic safety tire improved in run-flat and wet performance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17059479A JPS5695708A (en) 1979-12-28 1979-12-28 Penumatic safety tire improved in run-flat and wet performance

Publications (1)

Publication Number Publication Date
JPS5695708A true JPS5695708A (en) 1981-08-03

Family

ID=15907725

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17059479A Pending JPS5695708A (en) 1979-12-28 1979-12-28 Penumatic safety tire improved in run-flat and wet performance

Country Status (1)

Country Link
JP (1) JPS5695708A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62174904U (en) * 1986-04-25 1987-11-06
JPH11321251A (en) * 1998-02-27 1999-11-24 Bridgestone Corp Pneumatic tire
JP2002331812A (en) * 2001-05-08 2002-11-19 Toyo Tire & Rubber Co Ltd Run flat tire

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1067856A (en) * 1963-07-19 1967-05-03 Pneumatiques Caoutchouc Mfg Tyre for heavy duty vehicles
JPS5120301A (en) * 1974-08-07 1976-02-18 Bridgestone Tire Co Ltd
JPS5438004A (en) * 1977-08-31 1979-03-22 Bridgestone Corp Pneumatic tire having at least two types of tread rubber layers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1067856A (en) * 1963-07-19 1967-05-03 Pneumatiques Caoutchouc Mfg Tyre for heavy duty vehicles
JPS5120301A (en) * 1974-08-07 1976-02-18 Bridgestone Tire Co Ltd
JPS5438004A (en) * 1977-08-31 1979-03-22 Bridgestone Corp Pneumatic tire having at least two types of tread rubber layers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62174904U (en) * 1986-04-25 1987-11-06
JPH11321251A (en) * 1998-02-27 1999-11-24 Bridgestone Corp Pneumatic tire
JP4548870B2 (en) * 1998-02-27 2010-09-22 株式会社ブリヂストン Pneumatic tire
JP2002331812A (en) * 2001-05-08 2002-11-19 Toyo Tire & Rubber Co Ltd Run flat tire
JP4671319B2 (en) * 2001-05-08 2011-04-13 東洋ゴム工業株式会社 Run flat tire

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