Heavy-load tire with wind bead structure

Details Heavy-load tire with wind bead structure Heavy-load tire with wind bead structure

2011-08-16

2011-08-16

Johnstone, Adrienne C (Department: 1747)

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

C152S543000, C152S552000

Reexamination Certificate

active

07997318

ABSTRACT:
A heavy-load tire has a wind bead structure in which a turned-up portion of a carcass ply is wound around a bead core, in which a bead portion is equipped with a bead reinforcing layer having a U-shaped cross section and a bead apex rubber having a triangular-shaped cross section. The turned-up portion has an auxiliary turned-up portion passing through the vicinity of a radially outer side of the bead core. The bead apex rubber includes a high complex elasticity modulus inner apex portion disposed at a radially inner side and a low complex elasticity modulus outer apex portion disposed at a radially outer side.

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