Sumitomo Rubber Industries Limited

Hiroyuki Ishino

Shotaro Abe

Mahito Arai

Kotaro Tahara

Kenta Yagi

Yuto Hashimoto

Saki Arakawa

Tire for automobile

A first and a second tread pattern portions Pand Pon each side of a tire equator (Co) are line symmetry except being circumferentially misaligned, and are each provided with oblique lateral grooves, inner and outer joint groovesandconnecting between the circumferentially adjacent oblique lateral grooves, inner terminating groovesdisposed between the inner and outer joint groovesand, outer terminating groovesdisposed between the outer joint grooves and a ground contact edge (TE), and center joint groovesalternately connecting the oblique lateral grooves of the first and second tread pattern portions. The inner and outer joint groovesandand the inner and outer terminating groovesandare inclined to different directions from the oblique lateral grooves. The outer terminating groovesextend on extended lines of the outer joint grooves

Pneumatic tire

A tire comprises a tread portion. The tread portioncomprises a plurality of oblique groovesextending obliquely from a first tread edge Tepositioned on one side in a tire axial direction toward a tire equator C, and a plurality of oblique land regionseach defined between a pair of the oblique groovesadjacent to each other in a tire circumferential direction. Each of the oblique land regionsis provided with a plurality of joint grooveseach connecting between the pair of the oblique grooves

Tire

A tire has a tread having a first tread edge, a second tread edge on the opposite side, and multiple inclined main grooves formed such that each inclined main groove is obliquely extending from one of the first and second tread edges toward a tire equator and is terminated without reaching the other one of the first and second tread edges. The inclined main grooves are formed such that each of the inclined main grooves includes a tire axial direction outer side portion obliquely extending in an inclined direction, a tire axial direction inner side portion inclining in the inclined direction, and a middle portion formed between the tire axial direction outer side portion and the tire axial direction inner side portion and inclining in the opposite inclined direction with respect to the inclined direction of the tire axial direction outer side portion and tire axial direction inner side portion.

A pneumatic tire includes a tread portion being provided with a plurality of inclined main grooves extending beyond a tire equator from one of a first tread edge and a second tread edge and terminating without reaching the other one of the first tread edge and the second tread edge. Each of the inclined main grooves includes an outer portion and an inner portion. The outer portion extends from the first tread edge or the second tread edge without reaching the tire equator while increasing an angle relative to an axial direction of the tire. The inner portion is connected to the outer portion and traverses the tire equator at a smaller angle relative to the axial direction of the tire than the angle of the outer portion.

Growing community of inventors

Kobe, Japan

Hiroyuki Ishino