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US 6,883,572 B2Granted
Pneumatic radial tire with inner carcass ply E*1 different from outer carcass ply E*2
AssigneeSumitomo Rubber Industries, Ltd.
InventorMasahiro Hanya
Life of this patent
Estimating the term…
Abstract
A pneumatic radial tire has a carcass composed of radially inner and outer carcass plies. A complex elastic modulus E*1 of the topping rubber of the inner carcass ply is different from a complex elastic modulus E*2 of the topping rubber of the outer carcass ply, and a ratio E*1/E*2 is 0.95 or lower or 1.05 or higher.
Claims3
A pneumatic radial tire having a carcass including radially inner and outer carcass plies each having a ply body extending from a tread portion to a bead core of a bead portion through a sidewall portion, wherein
- each of the inner and outer carcass plies includes a cord-arrangement body in which carcass cords are aligned to each other, front and back surfaces of the cord-arrangement body are coated with topping rubber, a complex elastic modulus E*1 of the topping rubber of the inner carcass ply is different from a complex elastic modulus E*2 of the topping rubber of the outer carcass ply, and a ratio E*1/E*2 is 0.95 or lower or 1.05 or higher.
Dependencies are inferred from the claim text.