TIRE WITH IMPROVED BEAD STRUCTURE

To provide a tire with an improved bead structure which is light without sacrificing strength and which overcomes problems such as creep under load and fretting.SOLUTION: A pneumatic radial tire has: a bead portion provided with a bead core 30 therein; a first layer of a plurality of sheath wires 35...

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Bibliographische Detailangaben
1. Verfasser:	UEYOKO KIYOSHI
Format:	Patent
Sprache:	eng ; jpn
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:	To provide a tire with an improved bead structure which is light without sacrificing strength and which overcomes problems such as creep under load and fretting.SOLUTION: A pneumatic radial tire has: a bead portion provided with a bead core 30 therein; a first layer of a plurality of sheath wires 35 surrounding the bead core 30; and a second layer formed of a plurality of sheath wires 37 surrounding the first layer, where the sheath wires 37 of the second layer have a diameter C less than the sheath wires 35 of the first layer.SELECTED DRAWING: Figure 3 【課題】強度を犠牲にすることなく軽量であり、荷重下のクリープやフレッチングなどの問題を克服する、ビード構造が改良されたタイヤを提供する。【解決手段】ビードコア３０が内部に設けられたビード部と、前記ビードコア３０を囲む複数のシースワイヤ線３５の第１の層と、前記第１の層を囲む複数のシース線３７から形成された第２の層とを有し、前記第２の層のシースワイヤ線３７は、前記第１の層のシースワイヤ線３５よりも小さい直径Ｃを有する空気入りラジアルタイヤ。【選択図】図３