JPS5488502A - Highly durable pneumatic tire - Google Patents

Highly durable pneumatic tire

Info

Publication number
JPS5488502A
JPS5488502A JP15695077A JP15695077A JPS5488502A JP S5488502 A JPS5488502 A JP S5488502A JP 15695077 A JP15695077 A JP 15695077A JP 15695077 A JP15695077 A JP 15695077A JP S5488502 A JPS5488502 A JP S5488502A
Authority
JP
Japan
Prior art keywords
ply
pneumatic tire
twisted
cord
bundle
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.)
Granted
Application number
JP15695077A
Other languages
Japanese (ja)
Other versions
JPS5716007B2 (en
Inventor
Masaru Abe
Yasuaki Tsurunaga
Hideaki Hashimoto
Junichi Tsuzura
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 JP15695077A priority Critical patent/JPS5488502A/en
Priority to CA318,293A priority patent/CA1084398A/en
Priority to AU42800/78A priority patent/AU512906B2/en
Publication of JPS5488502A publication Critical patent/JPS5488502A/en
Publication of JPS5716007B2 publication Critical patent/JPS5716007B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To improve the compressive resistance fatigue properties of a highly durable pneumatic tire by specifying the structure of a carcass body of the tire.
CONSTITUTION: The carcass body 2 of this pneumatic tire consists of a ply bundle 2a having four sheets of ply of organic fibrous cord twisted N times in a manner wound integrally from the inside to the outside of a bead core 1a, and a ply bundle 2b having two sheets of ply of cord of the same diameter as the ply bundle 2a twisted N' times (>N) in a manner folded integrally from the outside to the inside of a bead heel portion 1b and secured at the end thereof to a bead toe portion 1c along the lower surface of the core 1a. There is thus formed the body 2 of bias structure having a ply group of relatively less twisted cords in the vicinity of the inner layer and a ply group of relatively more twisted cords in the vicinity of the layer compositely laminated so that the twist of the outermost layer cord is more by 5 to 30% than that of the inner layer adjacent thereto so as to thereby carry out the primary object.
COPYRIGHT: (C)1979,JPO&Japio
JP15695077A 1977-12-26 1977-12-26 Highly durable pneumatic tire Granted JPS5488502A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP15695077A JPS5488502A (en) 1977-12-26 1977-12-26 Highly durable pneumatic tire
CA318,293A CA1084398A (en) 1977-12-26 1978-12-20 Highly durable pneumatic tire
AU42800/78A AU512906B2 (en) 1977-12-26 1978-12-21 Carcass with plies of different twist

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15695077A JPS5488502A (en) 1977-12-26 1977-12-26 Highly durable pneumatic tire

Publications (2)

Publication Number Publication Date
JPS5488502A true JPS5488502A (en) 1979-07-13
JPS5716007B2 JPS5716007B2 (en) 1982-04-02

Family

ID=15638871

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15695077A Granted JPS5488502A (en) 1977-12-26 1977-12-26 Highly durable pneumatic tire

Country Status (3)

Country Link
JP (1) JPS5488502A (en)
AU (1) AU512906B2 (en)
CA (1) CA1084398A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59160084A (en) * 1983-03-02 1984-09-10 Nippon Denso Co Ltd Rotary fluid pressurizing and sending device
JPS6151509U (en) * 1984-09-04 1986-04-07
JPS63254896A (en) * 1987-04-10 1988-10-21 Matsushita Electric Ind Co Ltd Planar speaker

Also Published As

Publication number Publication date
AU4280078A (en) 1979-07-05
JPS5716007B2 (en) 1982-04-02
AU512906B2 (en) 1980-11-06
CA1084398A (en) 1980-08-26

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