The tread has a primary groove which is provided with a plurality of closing devices including flexible fences. At least one first flexible fence has a thickness t1 and extends from a groove bottom. At least one second flexible fence has a thickness t2 and extends from one groove sidewall toward the other. The second flexible fence forms an angle A1 between an imaginary line connecting a free end of the second flexible fence and a bottom edge of the second flexible fence and an imaginary line extending from the free end of the top edge in a tire radial direction. A width wb1 of the first flexible fence is at most equal to 45% of a width WB of the primary groove, and a width wb2 of the second flexible fence at the bottom edge is at most equal to 40% of the width WB.
A NOISE REDUCING TREAD
GERÄUSCHMINDERNDE LAUFFLÄCHE
BANDE DE ROULEMENT RÉDUISANT LE BRUIT
2019-09-18
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |