Pneumatic tire
AssigneeToyo Tire & Rubber Co., Ltd.
InventorKazuo Shimomura
Life of this patent
Estimating the term…
Abstract
A tire includes: a tread portion including a tread surface; a pair of sidewall portions that extend inward in a tire radial direction from both sides of the tread portion in a tire width direction; and a pair of bead portions each of which includes a bead core that is elongated continuously to an inside of the sidewall portion in the tire radial direction and extends continuously in an annular shape in a tire circumferential direction, and a bead filler disposed adjacent to the bead core and outside the bead core in the tire radial direction. A density of the reinforcing cords changes in a range from 20% inclusive to 60% inclusive of a tire sectional height from a tire inner end in the tire radial direction, and such that an outside of an area, in which the density changes, has a low density of the reinforcing cords.
Claims16
A pneumatic tire comprising:
- a tread portion that including a tread surface;
- a pair of sidewall portions that extend inward in a tire radial direction from both sides of the tread portion in a tire width direction;
- and
- a pair of bead portions each of which includes a bead core that is elongated continuously to an inside of the sidewall portion in the tire radial direction and extends continuously in an annular shape in a tire circumferential direction, and a bead filler disposed adjacent to the bead core and outside the bead core in the tire radial direction,
- wherein reinforcing cords are disposed in the bead portion and the sidewall portion such that a density of the reinforcing cords changes in a range from 20% inclusive to 60% inclusive of a tire sectional height from a tire inner end in the tire radial direction, and such that an outside of an area, in which the density change changes, has a low density of the reinforcing cords.
Dependencies are inferred from the claim text.