US 8,739,850 B2Granted

Pneumatic tire

AssigneeThe Yokohama Rubber Co., Ltd.

InventorMasahiro Ishida

Life of this patent

Estimating the term…

Loading patent…

Abstract

A side wall portion including, in a specific region in a tire radial direction, a decorative region including two or more decorative portions that are continuously disposed so as to be contiguous in a tire circumferential direction, the decorative portions including multiple convex ridges that are disposed on an outer surface so as to be adjacent in the tire circumferential direction. The ridges in the same decorative portion have a same ridge arrangement angle, and the ridge arrangement angle of the contiguous decorative portion differs therefrom not less than 20° and not more than 160°. In all regions in the tire circumferential direction, at least one side in the tire radial direction of the decorative portion overlaps with the contiguous decorative portion. A distance between a first imaginary boundary line and a second imaginary boundary line is less than 1 mm.

Claims20

Dependent claims

A pneumatic tire comprising a tread portion, a side wall portion, and a bead portion, wherein

the side wall portion comprises, in a specific region in a tire radial direction, a decorative region including three or more decorative portions that are continuously disposed so as to be contiguous in a tire circumferential direction, the decorative portions including multiple convex ridges that are disposed on an outer surface so as to be adjacent in the tire circumferential direction and the decorative region includes not less than three types and not more than nine types of the decorative portions having different ridge arrangement angles;
a ridge arrangement angle, which is an angle formed by the ridges and a line tangent to the decorative region at an edge of an inner side in the tire radial direction, is the same in the same decorative portion, and a ridge arrangement angle of the contiguous decorative portion differs therefrom not less than 20° and not more than 160°;
in all regions in the tire circumferential direction, at least one side in the tire radial direction of the decorative portion overlaps with the contiguous decorative portion;
a first imaginary boundary line joining end portions of the ridges of the decorative portion that are on a side adjacent to the contiguous decorative portion and a second imaginary boundary line joining end portions of the ridges of the contiguous decorative portion on a side adjacent to the first imaginary boundary line extend from an inner side edge to an outer side edge in the tire radial direction, and a distance between the first imaginary boundary line and the second imaginary boundary line is less than 1 mm;
and
the ridges of the decorative portion are separated from the ridges of the contiguous decorative portion.

3 more elements

A pneumatic tire comprising a tread portion, a side wall portion, and a bead portion, wherein

the side wall portion comprises, in a specific region in a tire radial direction, a decorative region including two or more decorative portions that are continuously disposed so as to be contiguous in a tire circumferential direction, the decorative portions including multiple convex ridges that are disposed on an outer surface so as to be adjacent in the tire circumferential direction;
a ridge arrangement angle, which is an angle formed by the ridges and a line tangent to the decorative region at an edge of an inner side in the tire radial direction, is the same in the same decorative portion, and a ridge arrangement angle of the contiguous decorative portion differs therefrom not less than 20° and not more than 160°;
in all regions in the tire circumferential direction, at least one side in the tire radial direction of the decorative portion overlaps with the contiguous decorative portion;
a first imaginary boundary line joining end portions of the ridges of the decorative portion that are on a side adjacent to the contiguous decorative portion and a second imaginary boundary line joining end portions of the ridges of the contiguous decorative portion on a side adjacent to the first imaginary boundary line extend from an inner side edge to an outer side edge in the tire radial direction, and a distance between the first imaginary boundary line and the second imaginary boundary line is less than 1 mm;
the ridges of the decorative portion are separated from the ridges of the contiguous decorative portion;
and
in the decorative region, an angle formed by an end portion on an inner side in the tire radial direction of the first imaginary boundary line of the decorative portion and an end portion on the inner side in the tire radial direction of the first imaginary boundary line of the contiguous decorative portion is not more than 10°.

4 more elements

A pneumatic tire comprising a tread portion, a side wall portion, and a bead portion, wherein

the side wall portion comprises, in a specific region in a tire radial direction, a decorative region including two or more decorative portions that are continuously disposed so as to be contiguous in a tire circumferential direction, the decorative portions including multiple convex ridges that are disposed on an outer surface so as to be adjacent in the tire circumferential direction;
a ridge arrangement angle, which is an angle formed by the ridges and a line tangent to the decorative region at an edge of an inner side in the tire radial direction, is the same in the same decorative portion, and a ridge arrangement angle of the contiguous decorative portion differs therefrom not less than 20° and not more than 160°;
in all regions in the tire circumferential direction, at least one side in the tire radial direction of the decorative portion overlaps with the contiguous decorative portion;
a first imaginary boundary line joining end portions of the ridges of the decorative portion that are on a side adjacent to the contiguous decorative portion and a second imaginary boundary line joining end portions of the ridges of the contiguous decorative portion on a side adjacent to the first imaginary boundary line extend from an inner side edge to an outer side edge in the tire radial direction, and a distance between the first imaginary boundary line and the second imaginary boundary line is less than 1 mm;
the first imaginary boundary line and the second imaginary boundary line overlap in the decorative region;
and
the ridges of the decorative portion are separated from the ridges of the contiguous decorative portion.

4 more elements

Dependencies are inferred from the claim text.