US 12,448,067 B2
Tread of a vehicle track
Frederic Perrin, Clermont-Ferrand (FR); David Dean, Clermont-Ferrand (FR); and Maxime Pras, Clermont-Ferrand (FR)
Assigned to COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand (FR)
Appl. No. 17/779,802
Filed by COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand (FR)
PCT Filed Nov. 24, 2020, PCT No. PCT/FR2020/052153
§ 371(c)(1), (2) Date May 25, 2022,
PCT Pub. No. WO2021/105602, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 1913146 (FR), filed on Nov. 25, 2019.
Prior Publication US 2023/0051293 A1, Feb. 16, 2023
Int. Cl. B62D 55/24 (2006.01)
CPC B62D 55/244 (2013.01) 7 Claims
OG exemplary drawing
 
1. A rubber caterpillar track forming a closed loop in a longitudinal direction (OX) having a given width in a transverse direction (OY), having a longitudinal centerline, and having an interior surface intended to collaborate with drive means, and a tread of which an exterior surface is intended to come into contact with a ground, the tread comprising a tread pattern formed of a plurality of tread pattern blocks made of an elastomeric material which are intended to come into contact with the ground in order to give the caterpillar track traction, there being N tread pattern blocks in the plurality of tread pattern blocks, each tread pattern block having a quadrilateral base and extending outward from a bearing surface as far as the exterior surface and comprising a contact face intended to be in contact with the ground and a leading face intended to transmit force,
wherein the tread pattern blocks are arranged in a plurality of transverse rows, each transverse row of the plurality of transverse rows having a central tread pattern block and two or more tread pattern blocks on either side of the longitudinal centerline, the tread pattern blocks within each row are disposed such that, starting from the central tread pattern block, front edge corners of successively adjacent blocks are offset with respect to one another in the longitudinal direction (OX) and in a direction opposite to a direction of running,
wherein the leading face of n tread pattern blocks of the plurality of tread pattern blocks is inclined by an angle α between 45 degrees and 75 degrees with respect to a direction (OZ) normal to the bearing surface, n being greater than or equal to 0.2×N, and
wherein the tread is made of an elastomeric material of which a shore A hardness, measured in accordance with standard ASTM D2240, is greater than or equal to 65.