Compagnie Generale Des Etablissements Michelin

Damien Blouin

Héloïse Debordeaux

Emmanuel Igier

David Dean

Philippe Souyri

Quentin Bonneton

Serge Lefebvre

Marion Cavro

Tire

Pneumatic tire comprising a tread () provided with two edges (), a center () and a plurality of tread bars () distributed in a circumferential direction, each tread bar () extending in an oblique direction from one of the edges () towards the center () of said tread (), the plurality of tread bars () comprising at least two adjacent tread bars (); each of said adjacent tread bars () has at least one incision () extending along the length of the tread bar, each adjacent tread bar has an overall incision length (LGI) corresponding to the sum of the lengths of the incisions that are part of said tread bar, the widths (LB, LB) of said adjacent tread bars () are different, and the overall incision length (LGI) in said adjacent tread bars () is different.

Pneumatic tire

A tire having a tread with a plurality of blocksprovided with at least one sipeextending from the contact face of said block, and having a width that can vary in the direction of its depth, and known as a complex sipe. The tread has a first layer of materialand at least one second layer of materialradially on the inside of the first layer, the first layer being formed in a first rubber composition and the second layer being formed in a second rubber composition different from the first composition. The complex sipeand the grooves separating the blocks are formed entirely in the first layer of material. Laterally on each side of the complex sipe, the second layer of materialextends, when viewed in transverse section in the block, beyond the bottomof the complex sipe in the direction of the contact face of the block.

Tire with tread comprising an evolving tread pattern with sipes

Growing community of inventors

Clermont-Ferrand, France

Damien Blouin