Compagnie Generale Des Etablissements Michelin

Cécile Roussel

Olivier Ropars

Franck Nugier

Thierry Royer

Cécile Belin

Christophe Lemarchand

A Tire tread with blocks for a heavy construction-plant vehicle, to improve the compromise between traction on muddy ground and lifetime in terms of wear on rough ground. A tread () has blocks (), which are separated by cuts () and raised with respect to a bottom surface (). Any block () have a contact face () having a polygonal shape of surface area SC, which is contained in a tread surface (), lateral faces (), and a base section (), which has a polygonal shape of surface area SB. The contact face () of any block () has a polygonal shape that is at least partially concave, wat least two consecutive sides () that form between them an interior angle Aof the polygonal shape that is greater than 180° and the surface area SC of the contact face () is at most equal to 0.9 times the surface area SB of the base section ().

Tire tread for a heavy construction-plant vehicle

A radial tire () for a heavy vehicle of construction plant type, and more particularly, the sidewalls thereof (), arranged to minimize the temperature of the tire while guaranteeing its electrical conductivity. The tread () comprises two tread wings () and a central portion (). The bead layer (), the elastomeric coating compound of the carcass layer (), the second sidewall layer () and the tread wing () constitute a preferential conductive pathway of the electric charges between the rim and the ground when the tire is mounted on its rim and flattened on the ground.

Growing community of inventors

Clermont-Ferrand Cedex FR

Cécile Roussel