| 摘要 |
Tire tread, this tread having a tread surface intended to come into contact with a roadway and comprising at least one groove of width W and of depth P delimited by two lateral walls facing one another, these two lateral walls being joined together by a groove bottom, at least one groove comprising a plurality of closure devices, each closure device being made up of a flexible blade to close this groove in a rest position to a degree of closure of at least 90%, each flexible blade having a thickness suited to allowing it to deform under the effect of a circulation of liquid in the groove, this at least one flexible groove being secured to the two lateral walls delimiting the groove and to the bottom of the groove, each flexible blade being dimensionally suited to be able, under the action of a flow of liquid, to deform in the groove thereby reducing its degree of closure of the cross section of this groove to at most 40%. |
