HEAVY-DUTY PNEUMATIC RADIAL TIRE

PURPOSE:To restrain a bead section from being inclined, so as to reduce strain by providing a rubber stock made of three kinds of rubber respectively having specific characteristics between the carcass body of the bead section and the fold-back, and by specifying the thickness of one of the kinds of...

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Bibliographische Detailangaben
Hauptverfasser:	UEDA HIROSHI, BANBA FUMIO, KISHINAMI SHIGETO, YAMAGUCHI HIROSHI
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES OR ARRANGEMENTS RELATED TO TYRES PERFORMING OPERATIONS REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL TRANSPORTING TYRE CHANGING OR REPAIRING TYRE INFLATION VEHICLE TYRES VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	PURPOSE:To restrain a bead section from being inclined, so as to reduce strain by providing a rubber stock made of three kinds of rubber respectively having specific characteristics between the carcass body of the bead section and the fold-back, and by specifying the thickness of one of the kinds of rubber. CONSTITUTION:A rubber stock composed of a rubber A adjacent to a carcass body 15 and a bead core 12, a rubber B adjacent to the carcass body 15 and the fold-back 16 and a rubber C adjacent to the rubber B and the fold-back 16 is disposed between the carcass body 15 constituting a carcass 17 and a fold-back 16. Further, the rubber A is set so as to have a 100% modulus of more than 60kgf/cm , the rubber B to have a 100% modulus of 15kgf/cm and a resiliency of 65 to 85, and the rubber C to have a 100% modulus of 35 to 60kgf/cm and a resilience of 50 to 65. Further, the ratio between the overall thickness (a) of the rubber stock and the thickness (b) of the rubber C is set to be in a range from 0.3 to 0.75.