Compagnie Generale Des Etablissements Michelin

Mathieu Girard

Matthieu Bonnamour

Mathieu Vandaele

Bertrand Daval

Alexandre Laval

Bruno Charasson

David Hernandez

Antoine Filiol

Stephane Callamand

Remi Reynal-de-st-michel

Julien Falempin

Stéphane Callamand

Rémi Reynal-De-St-Michel

The tire () comprises a crown (), two sidewalls (A,B), two beads (A,B), an inner surface () delimiting a toroidal cavity (), and a stiffening structure () comprising a stiffening element () extending continuously into the toroidal cavity () from at least one of the sidewalls (A,B) or one of the beads (A,B) to the crown (). The stiffening element () is anchored in or around: a radially inner reinforcing structure (A,B) arranged in the sidewall (A,B) and/or the bead (A,B), the radially inner reinforcing structure (A,B) being distinct from the circumferential reinforcing element (A,B) situated on the same side of the median plane (M) of the tire () as the sidewall (A,B) and/or the bead (A,B), and a radially outer reinforcing structure (A,B) arranged in the crown ().

Tire comprising a durable stiffening structure

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 with improved handling having a stiffening structure with a stiffening element extending continuously in the toroidal interior cavity from a crown interface connected to a radially inner face of the crown to a bead interface connected to an axially inner face of the bead. The stiffening structure is distributed circumferentially over the circumference of the tire, the axially outermost stiffening element interface is positioned, with respect to the equatorial plane (XZ), at an axial distance A at most equal to 0.45 times the axial width S, and the radially outermost stiffening element bead interface is positioned, with respect to a radially innermost point (I) of the axially inner face of the bead at a radial distance B at most equal to 0.5 times the radial height H.

Pneumatic tire for vehicle with reinforcing structure in the lower toric cavity

Growing community of inventors

Clermont-Ferrand, France

Mathieu Girard