US 12,246,565 B2
Pneumatic tire comprising specified hoop reinforcer element
Sabrina Rih, Clermont-Ferrand (FR); Richard Cornille, Clermont-Ferrand (FR); and Herve Ferigo, Clermont-Ferrand (FR)
Assigned to COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand (FR)
Appl. No. 16/956,892
Filed by COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand (FR)
PCT Filed Dec. 13, 2018, PCT No. PCT/FR2018/053268
§ 371(c)(1), (2) Date Jan. 22, 2021,
PCT Pub. No. WO2019/122619, PCT Pub. Date Jun. 27, 2019.
Claims priority of application No. 1763122 (FR), filed on Dec. 22, 2017.
Prior Publication US 2021/0155044 A1, May 27, 2021
Int. Cl. B60C 9/22 (2006.01); B60C 9/00 (2006.01); B60C 9/20 (2006.01)
CPC B60C 9/005 (2013.01) [B60C 9/2009 (2013.01); B60C 9/22 (2013.01); B60C 9/2204 (2013.01); B60C 2009/2214 (2013.01); B60C 2009/2257 (2013.01); B60C 2009/2261 (2013.01); B60C 2009/228 (2013.01); B60C 2009/2285 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A tire comprising a crown reinforcement, the crown reinforcement comprising a hooping reinforcement, the hooping reinforcement comprising a hooping ply, the hooping ply comprising at least one textile wire-like hoop reinforcer element making an angle strictly less than 10° with a circumferential direction of the tire, the tire being obtained by a method comprising a step of producing the hooping ply in which at least one bonded textile wire-like reinforcing element is embedded in a compound to form the at least one textile wire-like hoop reinforcer element,
wherein the at least one bonded textile wire-like reinforcing element has, before the step of producing the hooping ply, a tangent modulus less than or equal to 5 cN/tex/% for any elongation less than or equal to 3%,
wherein the at least one textile wire-like hoop reinforcer element has, once extracted from the tire, a tangent modulus greater than or equal to 5 cN/tex/% for any elongation greater than or equal to 4%, and
wherein the at least one textile wire-like hoop reinforcer element comprises:
a core composed of a first strand comprising at least one monofilament, and
a layer comprising at least two second strands, each second strand of the layer comprising at least one monofilament, each second strand of the layer being helically wound around the core, and each second strand having a count from 130 tex to 220 tex.