US 11,654,721 B2
Tire
Saki Arakawa, Kobe (JP); Hiroshi Yamaoka, Kobe (JP); Kotaro Tahara, Kobe (JP); and Takafumi Noguchi, Kobe (JP)
Assigned to SUMITOMO RUBBER INDUSTRIES, LTD., Kobe (JP)
Filed by Sumitomo Rubber Industries, Ltd., Kobe (JP)
Filed on May 21, 2020, as Appl. No. 16/880,472.
Claims priority of application No. JP2019-102091 (JP), filed on May 31, 2019; application No. JP2019-102096 (JP), filed on May 31, 2019; and application No. JP2019-102097 (JP), filed on May 31, 2019.
Prior Publication US 2020/0376896 A1, Dec. 3, 2020
Int. Cl. B60C 11/03 (2006.01)
CPC B60C 11/0302 (2013.01) [B60C 11/0304 (2013.01); B60C 2011/0372 (2013.01); B60C 2011/0374 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A tire comprising:
a tread portion having an outboard tread edge and an inboard tread edge to be located outboard and inboard of a vehicle, respectively,
the tread portion provided, between the inboard tread edge and the outboard tread edge, with three main grooves,
the three main grooves extending continuously and circumferentially of the tire so that the tread portion is axially divided into four land regions,
the three main grooves including
an outboard shoulder main groove disposed closest to the outboard tread edge among the three main grooves, and
a crown main groove disposed adjacently to the outboard shoulder main groove on the inboard tread edge side of the outboard shoulder main groove, and
the four land regions including an outboard middle land region defined between the outboard shoulder main groove and the crown main groove,
wherein
the axial width of the outboard middle land region is the largest among the four land regions,
the outboard middle land region is provided with
first inclined grooves each inclined to a first direction with respect to the tire axial direction,
second inclined grooves each inclined to the first direction with respect to the tire axial direction, and
fourth inclined grooves inclined to a second direction with respect to the tire axial direction, wherein the second direction is opposite to the first direction,
the first inclined grooves extend across the entire axial width of the outboard middle land region,
the second inclined grooves extend from the crown main groove and are terminated to have ends within the outboard middle land region,
an angle of each of the first inclined grooves with respect to the tire circumferential direction gradually increases from the crown main groove toward the outboard tread edge,
an angle of each of the second inclined grooves with respect to the tire circumferential direction gradually increases from the crown main groove toward the outboard tread edge, and
each of the fourth inclined grooves intersects one of the second inclined grooves and intersects one of the adjacent first inclined grooves at an axial position that is axially closer to the outboard shoulder main groove than the ends of the second inclined grooves,
the outboard middle land region is further provided with:
third inclined grooves inclined to the second direction with respect to the tire axial direction, wherein each of the third inclined grooves extends from the outboard shoulder main groove, intersects with one of the first inclined grooves and then connects to one of the second inclined grooves; and
fifth inclined grooves inclined to the second direction with respect to the tire axial direction, wherein each of the fifth inclined grooves extends to one of the first inclined grooves to terminate without extending thereacross, and extends to one of the second inclined grooves to terminate without extending thereacross.