Pneumatic tire
AssigneeToyo Tire Corporation
InventorKunihiko Nagai
Life of this patent
Estimating the term…
Abstract
A pneumatic tire includes a pair of bead cores; a pair of bead fillers; a carcass ply; a side wall rubber; a chafer layer that is rolled up on an outer surface of the carcass ply; and a pair of support rubbers that is located between the side wall rubber and the carcass ply and arranged such that a rolled-up end of the chafer layer is sandwiched from both sides in a tire width direction. The pair of support rubbers includes a tape rubber located inside in the tire width direction and a rear pad rubber located outside in the tire width direction. A modulus value of the tape rubber is higher than a modulus value of the side wall rubber. A modulus value of the rear pad rubber is higher than the modulus value of the tape rubber.
Claims10
A pneumatic tire comprising:
- a tread part;
- a pair of side wall parts that extend radially inwardly from widthwise ends the tread part;
- a pair of bead parts located at respective radially inner ends of the pair of side wall parts, each bead part comprising a bead core and a bead filler that is connected to the bead core and extends to an outer-diameter-side in a tire radial direction;
- a carcass ply that is suspended between the bead cores;
- a side wall rubber in each side wall part that is arranged on a tire-outer-surface-side of the carcass ply and constitutes a tire outer surface;
- a chafer layer in each side wall part that is arranged adjacent to the outer surface side of the carcass ply and is turned from a tire-inner-surface-side to the tire-outer-surface-side around the bead core and the bead filler and rolled up to the outer-diameter-side in the tire radial direction together with the carcass ply;
- and
- a pair of support rubbers in each side wall part that are located between the side wall rubber and the carcass ply and arranged such that a tire-outer-surface-side rolled-up end of the chafer layer is sandwiched from both sides in a tire width direction,
- wherein the pair of support rubbers in each side wall part includes a tape rubber located inside in the tire width direction and a rear pad rubber located outside in the tire width direction,
- the 100% modulus value of the tape rubber is higher than the 100% modulus value of the side wall rubber, and
- the 100% modulus value of the rear pad rubber is higher than the 100% modulus value of the tape rubber.
Dependencies are inferred from the claim text.