PNEUMATIC TIRE AND ITS MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To enhance operation stability while ensuring high bead durability. SOLUTION: A bead apex rubber 8 comprises a bottom side 12a, an apex main part 10 and an apex sub-part 11. The apex sub-part 11 is divided to the apex sub-portions 11i, 11o at the inner and outer sides in a tire...

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Bibliographische Detailangaben
1. Verfasser:	EGUCHI TSUDOI
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES OR ARRANGEMENTS RELATED TO TYRES PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL TRANSPORTING TYRE CHANGING OR REPAIRING TYRE INFLATION VEHICLE TYRES VEHICLES IN GENERAL WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To enhance operation stability while ensuring high bead durability. SOLUTION: A bead apex rubber 8 comprises a bottom side 12a, an apex main part 10 and an apex sub-part 11. The apex sub-part 11 is divided to the apex sub-portions 11i, 11o at the inner and outer sides in a tire axial direction by a division line X extending from a first apex P to the outer side in a radial direction. Rubber hardness of the apex main part 10 is 80-95° and complex modulus of elasticity is 15-30 MPa, and rubber hardness of the apex sub-portions 11i, 11o is 50-80° and complex modulus of elasticity is 3-15 MPa. A ratio h1/h2 of heights h1, h2 of the respective apexes P, Q from a bead base line BL is 0.3-0.9. COPYRIGHT: (C)2008,JPO&INPIT