Pneumatic tire
AssigneeToyo Tire Corporation
InventorTakuya Sukeyoshi
Life of this patent
Estimating the term…
Abstract
A pneumatic tire according to an embodiment includes a different color rubber portion provided on a side wall and made of rubber having a lower carbon black content than rubber constituting the side wall, a length in a tire radial direction from a tire radially outer end of the different color rubber portion to an annular protrusion formed at a boundary between a sector and a side plate of a tire vulcanization mold is 8% or more and 28% or less of a tire cross-sectional height H, and a second turned-up end of a turned-up portion overlaps a tread rubber without overlapping a belt in a normal direction of the turned-up portion.
Claims16
A pneumatic tire comprising:
- a pair of bead portions including a pair of bead cores spaced apart in a tire axial direction and bead fillers each provided on a tire radially outer side of one of the bead cores;
- a pair of side walls provided on the tire radially outer side from the pair of bead portions;
- a tread provided between the pair of side walls and having a belt including a plurality of cords covered with rubber and a tread rubber provided on the tire radially outer side of the belt;
- a carcass ply having a main portion provided between the pair of bead portions, and a turned-up portion extending from the main portion and turned up around the bead cores from a tire axially inner side toward a tire axially outer side;
- and
- a different color rubber portion provided on the tire axially outer side of the carcass ply in the side walls and made of rubber having a lower carbon black content than rubber constituting the side walls, wherein
- the pneumatic tire is formed by a tire vulcanization mold having a sector that forms at least a part of the tread and a side plate that comes into contact with the sector and forms at least a part of the side walls,
- a length in a tire radial direction from a tire radially outer end of the different color rubber portion to an annular protrusion, which is formed at a boundary between the sector and the side plate and continuous in a tire circumferential direction, is 8% or more to 28% or less of a tire cross-sectional height, and
- a tire radially outer end of the turned-up portion overlaps the tread rubber without overlapping the belt in a normal direction of the turned-up portion.
Dependencies are inferred from the claim text.