US 12,409,682 B2
Surface texture for a tire tread
Xavier Neau, Clermont-Ferrand (FR); Romain Berthier, Clermont-Ferrand (FR); and Thomas Lescur, Clermont-Ferrand (FR)
Assigned to COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand (FR)
Appl. No. 18/267,947
Filed by COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand (FR)
PCT Filed Dec. 10, 2021, PCT No. PCT/FR2021/052271
§ 371(c)(1), (2) Date Jun. 16, 2023,
PCT Pub. No. WO2022/129745, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 2013680 (FR), filed on Dec. 18, 2020.
Prior Publication US 2024/0051347 A1, Feb. 15, 2024
Int. Cl. B60C 11/03 (2006.01); B29D 30/06 (2006.01)
CPC B60C 11/0318 (2013.01) [B29D 30/0606 (2013.01); B60C 11/033 (2013.01); B29D 2030/0612 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A tire provided with a tread of which portions of a tread surface that are intended to be in contact with a ground comprise a texture formed by an arrangement of contiguous elements of pyramidal shape, each element of pyramidal shape having a base of parallelogram type positioned on the tread surface, and an apex situated at a radial distance H from the base, the base being defined by:
a first pair of mutually parallel sides spaced apart from one another by a first pitch P1, and forming an angle alpha with a circumferential direction of the tire; and
a second pair of mutually parallel sides spaced apart from one another by a second pitch P2, and forming an angle beta with the circumferential direction, a side of the second pair of mutually parallel sides meeting a side of the first pair of mutually parallel sides to form an acute angle,
wherein the first pair of parallel sides and the second pair of parallel sides form, at an intersection, vertices of the bases of parallelogram type, constituting a mesh of the portions of the tread surface,
wherein the angle alpha is in a range from 15° to 75°,
wherein the angle beta is in a range from −75° to −15°, and
wherein a normal distance from the apex to the base is in a range from 0.15 mm to 0.5 mm.