Compagnie Generale Des Etablissements Michelin

Bruno Charasson

Olivier Ropars

Mathieu Vandaele

Matthieu Bonnamour

Patrick Vervaet

Mathieu Girard

Marc Gandillet

Remi Reynal-de-st-michel

Istvan Matyas

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

Tire () for an agricultural vehicle, and more particularly the tread () thereof, has improved traction in the field, while reducing the sensitivity of the lugs () to attack by stubble. Each lug () comprises first lug portion (), having height H1, and second lug portion (), having height H2 and having a mean angle of inclination A2 with respect to circumferential direction (XX') of the tire. The first lug portion () is comprised of a radial superposition of N layers C1(), where i varies from 1 to N, each having a height H1, each layer C1having a mean angle of inclination A1strictly less than the mean angle of inclination A2, and, when N is strictly greater than 1, the angle A1relative to a layer C1, where j varies from 1 to N&#x2212;1, is strictly less than the angle A1relative to the layer C1.

Tread for an agricultural vehicle tire

Growing community of inventors

Clermont-Ferrand, France

Bruno Charasson