Michelin Recherche Et Technique S.a.

Compagnie Generale Des Etablissements Michelin

Societe Detechnologie Michelin

Compagnie Generale Des Establissements Michelin

Mathieu Vandaele

Hélène Emorine

Matthieu Bonnamour

Hervé Ferigo

Catherine Houis

Masayoshi Nomura

Benoit Durand-Gasselin

Olivier Muhlhoff

Héloïse Debordeaux

Serge Lefebvre

Kazutaka Yokokawa

William Licence

Stéphane Oraison

Robert Ciprian Radulescu

Gilles Godeau

Fabien Chatignoux

Jean-Francois Salvan

Richard Audigier

Sylvie Lhospitalier

Patrick Vervaet

Benoit Buffetaud

Gilles Sallaz

Mathieu Girard

Alexandre Laval

Julien Besset

Eric Lebreton

Frédéric Vallence

Antoine Filiol

Pierre Yem

Yann Chaylard

Quentin Bonneton

David Hernandez

Bruno Charasson

Vincent Ledieu

Florian Thalamy

Marcio Sylvino

Michel Lupiac

Elisabeth Michaudet

Gilles Douet

Remi Reynal-de-st-michel

Julien Falempin

Marie-Hélène Vantal

Laurence Lapra

Luc Delvart

Stéphane Callamand

Rémi Reynal-De-St-Michel

A tire () includes a stiffening structure () comprising stiffening elements () anchored in the crown () and extending into the toroidal cavity () between a radially inner anchor point (A,B) and a radially outer anchor point (A,B). The tread () has a profile height and comprises a plurality of ribs (), two adjacent ribs being axially separated from each other by a main circumferential cut-out () having a depth greater than or equal to 50% of the profile height. The radially outer anchor point (A,B) is aligned with one of the ribs ().

Tire comprising a circumferential cut-out and a durable stiffening structure and enabling optimized flattening of the tread

A tire made of rubber material includes a sidewall and a marking protruding from this sidewall. The tire has a texture, which has a plurality of strands protruding from the sidewall, these strands being distributed at a density at least equal to five strands per square millimeter (mm), each strand having a mean cross section between 0.0007 mmand 0.06 mmand/or the texture having a plurality of substantially mutually parallel lamellae protruding from the sidewall, the spacing of the lamellae being less than or equal to 0.5 mm, each lamella having a mean width between 0.03 mm and 0.3 mm. The texture protrudes from the sidewall of the tire, and this texture surrounds all or part of the marking.

Tire comprising high-contrast marking

The tire comprises a carcass reinforcement which extends into sidewalls. The tire is also provided with a protection device that protects against external attack. The protection device comprises a plurality of raised elements of height H that are arranged in the circumferential direction. The tire is also constructed such that each raised element is formed of at least two parts which are at least partially disjointed from one another along a separation zone. The separation zone is oriented substantially in the circumferential direction. Each part is able to come into contact with another part of the same raised element when one of the parts comes into contact with an external obstacle.

Device for protecting a tire wall

The aspects disclosed herein relate to a tread for a tire including at least one block of rubbery material of width W and length L with L&#xbb;W. This block extends in a circumferential direction (X) when the tread is mounted on the tire, the block including a contact surface intended to come into contact with the ground and a first lateral wall and a second lateral wall delimiting this contact surface. The block further includes a plurality of sipes opening onto the contact surface of the block, with each sipe extending over the contact surface in an oblique direction opening onto the first lateral wall and onto the second lateral wall, the sipes of the block being oriented in the same direction. The sipes are distributed over the contact surface of the block in such a way that when one sipe reaches the second lateral wall another sipe starts out from the first lateral wall at the same circumferential level (N) on the block, and each sipe includes at least two parts.

Tread comprising a block having a plurality of sipes

Disclosed herein is a tread for a tire. The tread includes at least one elongate block of rubbery material of width W and length L with L&#x3e;&#x3e;W. This elongate block extends in a circumferential direction (X) when the tread is mounted on the tire. The elongate block includes a contact surface intended to come into contact with the ground and a first lateral wall and a second lateral wall delimiting this contact surface. The elongate block includes a plurality of sipes opening onto the contact surface of the elongate block, with each sine extending in an oblique direction opening onto the first lateral wall and onto the second lateral wall. The sipes are distributed over the contact surface of the block in such a way that when one sipe reaches the second lateral wall another sipe starts out from the first lateral wall, at a same circumferential level (N) on the elongate block. With the sipes delimiting sub-blocks in the elongate block, at least two of these sub-blocks are configured differently in the tread.

Surface design for a pneumatic tire

Tire sidewall

Tire

Pneumatic tire

Tire tread having at least two wearing layers, provided with at least one continuous groove having in the as new condition a plurality of external cavities opening onto the tread surface and a plurality of internal cavities placed radially and completely inside the tread surface, such that: the difference between the mean lengths of the internal cavities and of the external cavities is at most equal to 20% of the longest mean length, the difference in the mean cross-sectional areas of the internal and external cavities is at most equal to 20% of the largest mean area, each external cavity of a continuous groove being connected to at least two internal cavities of the same groove and having a plurality of incisions opening onto the tread surface, each connecting two consecutive external cavities of the same groove and at least two connecting channels and at least one internal cavity.

Tire tread having improved rigidity

Tire tread

Growing community of inventors

Clermont-Ferrand, France

Mathieu Vandaele