×

Pneumatic tire

  • US 10,639,936 B2
  • Filed: 07/14/2016
  • Issued: 05/05/2020
  • Est. Priority Date: 09/08/2015
  • Status: Active Grant
First Claim
Patent Images

1. A pneumatic tire comprising, in a tread surface:

  • at least two circumferential main grooves continuously extending in a tire circumferential direction; and

    at least one rib-like land portion each defined by two circumferential main grooves adjacent to each other from among the at least two circumferential main grooves,wherein the rib-like land portion has;

    a circumferential sipe including a circumferential sipe portion extending in the tire circumferential direction; and

    a both-end closed sipe having both ends terminating within the rib-like land portion;

    when a land portion width of the rib-like land portion is evenly divided by three where a region at a center in a tire width direction is a center region and regions on both sides of the center region in the tire width direction are side regions, the circumferential sipe portion is located only in the center region, and the both-end closed sipe is located in any of the side regions;

    the rib-like land portion is a land portion in which no groove is provided that cuts across the land portion and has both ends open to the circumferential main grooves defining the rib-like land portion; and

    a plurality of circumferential sipes are arranged with the pitch length L (mm) in the rib-like land portion, and the relationship between the pitch length L (mm) and a tire circumferential sipe component total length Ls (mm) of the plurality of the circumferential sipes and the both-end closed sipe within one pitch area of the pitch length L (mm) satisfies;


    0.6L≤

    Ls≤

    3L.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×