Tire
AssigneeSumitomo Rubber Industries, Ltd.
InventorHiroki Nagase
Life of this patent
Estimating the term…
Abstract
Provided is a tire including a tread portion. The tread portion includes two circumferential grooves and three land portions. The three land portions include a crown land portion disposed on a tire equator, and two shoulder land portions including tread contact ends. At least one of the shoulder land portions includes a plurality of main inclined grooves and a plurality of subsidiary inclined grooves. The main inclined grooves have tire-axially inner ends ending in the shoulder land portions and tire-axially outer ends disposed outwardly of the tread contact ends Te in the tire axial direction. The subsidiary inclined grooves have tire-axially inner ends ending in the shoulder land portions and tire-axially outer ends ending in the shoulder land portions.
Claims19
A tire comprising a tread portion,
- wherein the tread portion comprises two circumferential grooves continuously extending in, and zigzag along, a tire circumferential direction on both sides lateral to a tire equator, and three land portions demarcated by the two circumferential grooves,
- wherein the three land portions comprise a crown land portion disposed on the tire equator, and two shoulder land portions including tread contact ends,
- wherein at least one of the shoulder land portions comprises a plurality of main inclined grooves extending at one or more inclines relative to a tire axial direction, and a plurality of subsidiary inclined grooves extending at one or more inclines relative to the tire axial direction,
- wherein the main inclined grooves have tire-axially inner ends ending in the shoulder land portions and tire-axially outer ends disposed outwardly of the tread contact ends in the tire axial direction,
- wherein the subsidiary inclined grooves have tire-axially inner ends ending in the shoulder land portions and tire-axially outer ends ending in the shoulder land portions, and
- wherein, on a tire meridian cross-section,
- each of the two shoulder land portions forms a part of an arc-shaped imaginary tread profile extending from one of the tread contact ends to the other of the tread contact ends, and
- the crown land portion comprises a first portion projecting outwardly of the imaginary tread profile in a tire radial direction.
A tire comprising a tread portion,
- wherein the tread portion comprises two circumferential grooves continuously extending in, and zigzag along, a tire circumferential direction on both sides lateral to a tire equator, and three land portions demarcated by the two circumferential grooves,
- wherein the three land portions comprise a crown land portion disposed on the tire equator, and two shoulder land portions including tread contact ends,
- wherein at least one of the shoulder land portions comprises a plurality of main inclined grooves extending at one or more inclines relative to a tire axial direction, and a plurality of subsidiary inclined grooves extending at one or more inclines relative to the tire axial direction,
- wherein the main inclined grooves have tire-axially inner ends ending in the shoulder land portions and tire-axially outer ends disposed outwardly of the tread contact ends in the tire axial direction,
- wherein the subsidiary inclined grooves have tire-axially inner ends ending in the shoulder land portions and tire-axially outer ends ending in the shoulder land portions, and
- wherein a steeply inclined portion overlaps a region obtained by extending a first inclined portion of the circumferential groove adjacent thereto along the tire axial direction.
A tire comprising a tread portion,
- wherein the tread portion comprises two circumferential grooves continuously extending in, and zigzag along, a tire circumferential direction on both sides lateral to a tire equator, and three land portions demarcated by the two circumferential grooves,
- wherein the three land portions comprise a crown land portion disposed on the tire equator, and two shoulder land portions including tread contact ends,
- wherein at least one of the shoulder land portions comprises a plurality of main inclined grooves extending at one or more inclines relative to a tire axial direction, and a plurality of subsidiary inclined grooves extending at one or more inclines relative to the tire axial direction,
- wherein the main inclined grooves have tire-axially inner ends ending in the shoulder land portions and tire-axially outer ends disposed outwardly of the tread contact ends in the tire axial direction,
- wherein the subsidiary inclined grooves have tire-axially inner ends ending in the shoulder land portions and tire-axially outer ends ending in the shoulder land portions, and
- wherein insulation rubber extends along a body portion of the carcass.
Dependencies are inferred from the claim text.