Tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorMasahiro Yao
Life of this patent
Estimating the term…
Abstract
A tire that allows enhancement of running performance on a deep snow road surface is provided. A tire 1 includes a first shoulder block 3. The first shoulder block 3 includes a first tread surface 5 extending inward from a first tread end T1 in the tire axial direction, a first side surface 6 extending inward from the first tread end T1 in the tire radial direction, and a second tread surface 7 extending outward from the first side surface 6 in the tire axial direction. The second tread surface 7 extends at an angle θ of 10° or less relative to a contact line 5n extending in contact with the first tread surface 5 through the first tread end T1. At least one groove 8 is disposed in the second tread surface 7.
Claims15
A tire comprising:
- a tread portion including a first tread end, and at least one first shoulder block including the first tread end,
- the first shoulder block includes
- a first tread surface extending inward from the first tread end in a tire axial direction,
- a first side surface extending inward from the first tread end in a tire radial direction, and
- a second tread surface extending outward from the first side surface in the tire axial direction,
- an edge formed at a point at which the first side surface and the second tread surface intersect each other,
- the second tread surface extends at an angle of 10° or less relative to a contact line extending in contact with the first tread surface through the first tread end, on a tire meridional cross section of the first shoulder block, and
- at least one groove is in the second tread surface,
- wherein a length of the second tread surface in the tire axial direction is 18% to 23% of a length of the first tread surface of the first shoulder block in the tire axial direction.
A tire comprising:
- a tread portion including a first tread end, and at least one first shoulder block including the first tread end,
- the first shoulder block includes
- a first tread surface extending inward from the first tread end in a tire axial direction,
- a first side surface extending inward from the first tread end in a tire radial direction, and
- a second tread surface extending outward from the first side surface in the tire axial direction,
- the second tread surface extends at an angle of 10° or less relative to a contact line extending in contact with the first tread surface through the first tread end, on a tire meridional cross section of the first shoulder block, and
- at least one groove is in the second tread surface,
- wherein the groove has an outer end portion in the tire radial direction radially inward of a mid-point of the first side surface in the tire radial direction;
- and
- no groove is formed on a portion of the first side surface that is outward of the mid-point in the tire radial direction.
A tire comprising:
- a tread portion including a first tread end, and at least one first shoulder block including the first tread end,
- the first shoulder block includes
- a first tread surface extending inward from the first tread end in a tire axial direction,
- a first side surface extending inward from the first tread end in a tire radial direction, and
- a second tread surface extending outward from the first side surface in the tire axial direction,
- the second tread surface extends at an angle of 10° or less relative to a contact line extending in contact with the first tread surface through the first tread end, on a tire meridional cross section of the first shoulder block,
- a plurality of grooves is formed in the second tread surface, and
- a length of the second tread surface in the tire axial direction is 18% to 23% of a length of the first tread surface of the first shoulder block in the tire axial direction.
Dependencies are inferred from the claim text.