Michelin Recherche Et Technique S.a.

Compagnie Generale Des Etablissements Michelin

Societe Detechnologie Michelin

Compagnie Generale Des Establissements Michelin

Michelin Recherche Et Techniques S.a.

Michelin Recherche Et Technique

Michelin De Technologie Michelin

Arnaud Larregain

Damien Bardin

Fabien Marlier

Dominique Chauvin

Frederic Honnorat

Olivier Muhlhoff

Frédéric Perrin

Walid Djabour

Hélène Emorine

Benjamin Quantinet

Adam Jara

Tony Zivkovic

Brian Keefe

Olivier Ropars

Stéphanie Cambon

Franck Nugier

Olivier Ferlin

Gilles Godeau

Christophe Gayton

Frédéric Domprobst

Jean-Claude Desvignes

Patrick Vervaet

Pascal Pirotte

Murielle De-Tullio

Benoit Buffetaud

Etienne Collet

Aurelien Fabre

Pierre Tourlonias

Eric Francois

Nicolas Levy

Guy Cagneaux

Florent Delfosse

Magdalena Krajewska

Xavier Robin

Frederic Lamberty

Rudy Megevand

Thierry Favario

Jawayon Khwanchart

Patrick Vervået

Olivier Godrie

Tire

A tread for a heavy goods vehicle tire, the tread having a surface when new suitable for coming into contact with a road surface, this tread having a plurality of optimized incisions opening onto its tread surface when new, each incision made of at least two narrow portions and wide portions, each narrow portion surrounded by wide portions, the sum of the areas of narrow portions representing at least 40% of the total surface of the incision (and the width being less than 0.4 mm, each portion having a width at least equal to 0.4 mm, this tread being such that for each optimized incision each of the wide portions extending between two narrow portions includes at least one section inclined in a plane parallel to the mid-plane of the optimized incision, and forming an angle at least 15 degrees with the direction of the tread thickness.

Tire tread for a heavy goods vehicle tire having improved incisions

Tire () comprising a tread (), the tire comprising at least one groove (), at least one wear indicator () disposed in the groove (), the wear indicator comprising a contact face () intended to come into contact with a roadway when the tire reaches a wear limit, the groove () comprising a texture () produced integrally with a bottom () of this groove (), said texture () surrounding the wear indicator () and contrasting with the contact face () of the wear indicator.

Tire comprising a textured tread

Tread () for a heavy-duty vehicle tire having a total thickness corresponding to the thickness of material to be worn away during running, this tread having, in the new state, a tread surface () intended to come into contact with a roadway when running. The tread comprises at least one hidden cavity () forming a new groove opening onto the tread surface after a predetermined amount of partial wear. Cavity () comprises two opposite lateral walls () connected together by bottom () radially towards the inside and by crown part () radially towards the outside. Crown part () is provided with a plurality of fine grooves () extending radially towards the outside from crown part () delimiting the cavity and extending in a direction that makes an angle at least equal to 40 degrees with the main direction of cavity ().

Tread for a heavy goods vehicle tire

A tread () for a heavy-duty vehicle tyre, having a tread surface () and an undulating groove () formed therein, having, when new, external cavities () open onto the tread surface () and internal cavities () entirely situated there-beneath when new, these cavities () connected to cavities () by linking cavities (), each external cavity () intersecting the tread surface () along a corner edge contour delimiting an opening () having two end regions (A, A) and a surface area Se measured on the tread surface (). In each end region (A, A) at least one thin blade () of rubbery material is formed which is secured to at least one of the walls delimiting the undulating groove to reduce the surface area of the opening () of each external cavity () viewed from the tread surface () when new.

Tire tread comprising undulating grooves

A groove of tire thread having a plurality of first and second portions, each delimited by facing walls spaced apart by a maximum width measured at the tread surface and approaching one another such that, at a depth between 20 and 80% of the total depth they are spaced apart by a width less than the maximum width or facing walls spaced apart by a minimum width measured at the tread and diverge from one another such that, at a depth between 20% and 80% of the total depth of the groove, they are spaced apart from one another by a width greater than the width. A plurality of first and second portions of groove so as to form a continuous passage between all the portions of groove in order to allow liquid to flow in the groove regardless of the level of wear.

Tire tread

A tire tread including a tread surface adapted to come into contact with a road surface has at least one main groove that, when new, opens onto the tread surface of the tread, this main groove having a maximum depth. The main groove includes a plurality of first groove portions and a plurality of second groove portions, the first and second groove portions being arranged alternately such that a first portion is followed by a second portion. Each first groove portion has a width that decreases with wear, and each second groove portion has a width that increases with wear.

Growing community of inventors

Thiers, France

Arnaud Larregain