Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Compagnie Generale Des Establissements Michelin

Compagnie Generale Des Etablissments Michelin

Mathieu Albouy

Richard Abinal

Patrick Pallot

Pierre Fevrier

Cyril Charreire

François-Xavier Bruneau

Patrice Fraysse

Daniel Fabing

François Chambriard

Vincent Tourneux

Cedrick Polycarpe

Tire comprising at least one working layer (). The radially outermost one thereof comprises at least one undulation () radially on the outside of the points of the working layer () that are in line with the centre of the bottom face () of the major groove () closest to undulation (). The undulation () of the radially outermost working layer () is such that, over at least 10% of the radially outer surface (ROS) of the said working layer (), the radial distance (do) between the radially outer surface (ROS) and the tread surface () is at least 1 mm less than the radial distance (dc) between the radially outer surface (ROS) and the tread surface (), which is the distance in line with the centre of the bottom face () of the major groove () closest to the said undulation ().

Tire comprising working layers having an improved architecture

A tire () for a vehicle has a tread surface having a transverse radius RT and comprises a crown layer () that comprises at least one undulation () in line with a rib (). The undulation () is such that it is radially on the outside of the points of the undulated layer in line with the center of the bottom face of the circumferential furrow () closest to the undulation () and has an amplitude at least equal to 1 mm. The radial distance (da) between at least one contact edge corner of a rib () in line with which an undulation is located and the transverse radius RT of the rib is at least equal to 0.2 mm and at most equal to 2 mm.

Tire comprising optimized architecture and tread pattern

Tire comprising major grooves with a depth at least equal to 4 mm and with a width at least equal to 1 mm. The radially outermost working layer () comprises at least one undulation (). The undulation () is such that the undulation () portion of the working layer () represents at least 10% of the surface of the working layer (), has an amplitude of at least 1 mm and is radially on the outside of the points of the working layer () that are in line with the bottom face () of the major groove () closest (). All the layers of material () making up the radial stack of the crown structure (S) have mean surfaces parallel to that of the radially outermost working layer ().

Tire having an optimized architecture

Tire tread

Growing community of inventors

Clermont-Ferrand, France

Mathieu Albouy