Pneumatic tire
AssigneeThe Yokohama Rubber Co., Ltd.
InventorTakamitsu Chaya
Life of this patent
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Abstract
In a pneumatic tire, at least one carcass layer mounted between a pair of bead portions is formed from a carcass cord formed of an organic fiber cord having filament bundles of organic fibers intertwined together, a fineness based on corrected mass of the carcass cord is from 4000 dtex to 8000 dtex, an intermediate elongation of the carcass cord at the sidewall portion under 1.0 cN/dtex load is from 3.3% to 4.2%, and an elongation at breakage of the carcass cord is 20% or more, and a ratio G/R of an interval between adjacent carcass cords within the carcass layer at a tire maximum width position to a cord diameter of the carcass cord is from 0.35 to 0.60.
Claims10
A pneumatic tire, comprising:
- a tread portion extending in a tire circumferential direction and having an annular shape;
- a pair of sidewall portions respectively disposed on both sides of the tread portion;
- and
- a pair of bead portions each disposed on an inner side of the pair of sidewall portions in a tire radial direction;
- the pneumatic tire comprising at least one carcass layer mounted between the pair of bead portions;
- the at least one carcass layer being formed from a carcass cord formed of an organic fiber cord having filament bundles of organic fibers intertwined together, a fineness of the carcass cord after dip treatment being from 4000 dtex to 8000 dtex, an intermediate elongation of the carcass cord at the sidewall portion under 1.0 cN/dtex load being from 3.3% to 4.2%, and an elongation at breakage of the carcass cord being 20% or more;
- and
- a ratio G/R of an interval G between adjacent carcass cords within one carcass layer at a tire maximum width position to a cord diameter R of the carcass cord being from 0.35 to 0.60.
Dependencies are inferred from the claim text.