US 12,350,973 B2
Tire
Kotaro Matsushita, Kanagawa (JP)
Assigned to The Yokohama Rubber Co., LTD., Tokyo (JP)
Appl. No. 17/596,410
Filed by The Yokohama Rubber Co., LTD., Tokyo (JP)
PCT Filed Jun. 10, 2020, PCT No. PCT/JP2020/022821
§ 371(c)(1), (2) Date Dec. 10, 2021,
PCT Pub. No. WO2020/250924, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. 2019-110746 (JP), filed on Jun. 14, 2019.
Prior Publication US 2022/0305848 A1, Sep. 29, 2022
Int. Cl. B60C 11/13 (2006.01); B60C 11/03 (2006.01); B60C 11/12 (2006.01)
CPC B60C 11/1369 (2013.01) [B60C 11/0304 (2013.01); B60C 11/1263 (2013.01); B60C 11/1281 (2013.01); B60C 11/1376 (2013.01); B60C 2011/0341 (2013.01); B60C 2011/0388 (2013.01); B60C 2011/039 (2013.01); B60C 2011/1286 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A tire comprising a tread portion comprising a tread pattern, the tread pattern comprising:
a first inner circumferential main groove and a second inner circumferential main groove provided on a first side and a second side, respectively, in a tire width direction about a tire equator line so as to circumnavigate in a tire circumferential direction and sandwich the tire equator line;
a first outer circumferential main groove and a second outer circumferential main groove provided on an outer side in the tire width direction of the first inner circumferential main groove and the second inner circumferential main groove, respectively, so as to circumnavigate in the tire circumferential direction;
a center land portion provided between the first inner circumferential main groove and the second inner circumferential main groove; and
a first intermediate land portion and a second intermediate land portion provided between the first inner circumferential main groove and the first outer circumferential main groove and between the second inner circumferential main groove and the second outer circumferential main groove, respectively,
a region of the center land portion being provided with no grooves having a groove width greater than a sipe width but with a plurality of first sipes arranged at intervals in the tire circumferential direction and comprising an opening end open to each of the first and second inner circumferential main grooves and with one or a plurality of second sipes arranged in each region in the tire circumferential direction between adjacent first sipes adjacent to each other in the tire circumferential direction among the first sipes, the second sipe having a narrower sipe width than the first sipe and comprising an opening end open to each of the first and second inner circumferential main grooves, the first and second sipes having the sipe width of 1.4 mm or less,
a region of at least one of the first and second intermediate land portions being provided with a plurality of intermediate lug grooves arranged at intervals in the tire circumferential direction and comprising an opening end open to at least one of the first and second outer circumferential main grooves and the first and second inner circumferential main grooves,
the intermediate lug grooves comprising one attention intermediate lug groove, an opening end of which is located within a range on a tire circumference along the tire circumferential direction between the opening ends of the adjacent first sipes at any position on the tire circumference, and
with respect to the attention intermediate lug groove among the plurality of intermediate lug grooves, a distance along the tire circumferential direction between the opening ends of the intermediate lug grooves and the attention intermediate lug groove adjacent to each other in the tire circumferential direction being equal to a distance along the tire circumferential direction between the opening ends of the adjacent first sipes.