tire

A tire with a single carcass ply and low-turn-up structure using thicker cords and a specific apex configuration addresses the challenge of weight reduction while maintaining strength and rollover resistance, ensuring effective cornering force and durability.

JP7877765B2Active Publication Date: 2026-06-23SUMITOMO RUBBER INDUSTRIES LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
SUMITOMO RUBBER INDUSTRIES LTD
Filing Date
2022-03-30
Publication Date
2026-06-23

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Patent Text Reader

Abstract

To provide a tire 2 that can be reduced in weight while suppressing a carcass from deteriorating in strength, without impairing anti-falling performance.SOLUTION: A tire 2 comprises a pair of beads 10 and a carcass 12. An apex 40 of each bead 10 comprises a first apex 42 and a second apex 44. The carcass 12 is constituted of one carcass ply 46. Total fineness of a carcass cord 48 included in the carcass ply 46 is 6000 dtex or more and 9000 dtex or less. A folded back part 46b is positioned between the first apex 42 and the second apex 44. A thickness of the second apex 44 at a reference position PF is 2.5 mm or more and 4.5 mm or less.SELECTED DRAWING: Figure 3
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