Compagnie Generale Des Etablissements Michelin

Bertand Boisdon

Jerome Labrousse

Marie-Hélène Vantal

Tire with a tread provided with two edges (A,B) and with a centre (C) dividing it into two parts of equal width with sets of blocks (A,B). Each set of blocks (A,B) has three zones: at the edge (), at the centre () and intermediate (). Each set of blocks (A,B) has a set of chamfers (A,B,C) which extends over at least the edge zone () and the central zone () of the set of blocks (A,B). The width LCof the set of chamfers (A,B,C) over the intermediate zone () is different from the width LCof the set of chamfers (A,B,C) over the central zone (), said widths LCand LCbeing comprised between 0.5 mm and 2.5 mm.

Growing community of inventors

Clermont-Ferrand, France

Bertand Boisdon