US 12,280,617 B2
Pneumatic tire and tire molding mold
Takashi Kidesaki, Kanagawa (JP)
Assigned to The Yokohama Rubber Co., LTD., Tokyo (JP)
Appl. No. 17/753,289
Filed by The Yokohama Rubber Co., LTD., Tokyo (JP)
PCT Filed Jul. 2, 2020, PCT No. PCT/JP2020/026104
§ 371(c)(1), (2) Date Feb. 25, 2022,
PCT Pub. No. WO2021/039117, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 2019-159091 (JP), filed on Aug. 30, 2019.
Prior Publication US 2022/0297480 A1, Sep. 22, 2022
Int. Cl. B60C 11/12 (2006.01); B29D 30/06 (2006.01); B60C 11/16 (2006.01)
CPC B60C 11/1236 (2013.01) [B29D 30/0606 (2013.01); B60C 11/1204 (2013.01); B60C 11/16 (2013.01); B29D 2030/0612 (2013.01); B29D 2030/0613 (2013.01); B60C 2011/1213 (2013.01); B60C 2011/1268 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A pneumatic tire comprising:
a plurality of sipes disposed in a land portion formed in a tread portion; and
a plurality of pin holes for stud pins disposed in the land portion,
the plurality of sipes being disposed at positions where a distance Ds from the pin hole and a diameter Dp of the pin hole satisfy a relationship of (Ds/Dp)≥4.0,
a pin hole neighboring sipe, among the plurality of sipes, in which the distance Ds from the pin hole and the diameter Dp of the pin hole satisfying a relationship of (Ds/Dp)≤5.0,
among one or more sipes, of the plurality of sipes, in which the distance Ds from the pin hole and the diameter Dp of the pin hole satisfy a relationship of (Ds/Dp)>5.0, a normal sipe being defined in which the distance Ds from the pin hole is smallest,
the pin hole neighboring sipe being formed in a high rigidity shape having higher rigidity than the normal sipe, and
a maximum depth of the pin hole neighboring sipe being shallower than a maximum depth of the normal sipe.