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1. (WO2018104617) TYRE INCLUDING A LIGHTWEIGHT CROWN REINFORCEMENT
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2018/104617 International Application No.: PCT/FR2017/053305
Publication Date: 14.06.2018 International Filing Date: 30.11.2017
IPC:
B60C 9/20 (2006.01) ,B60C 1/00 (2006.01) ,B60C 9/22 (2006.01) ,B60C 9/00 (2006.01) ,D07B 1/06 (2006.01) ,D02G 3/48 (2006.01)
Applicants: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN[FR/FR]; 12, Cours Sablon 63000 Clermont-Ferrand, FR
Inventors: SALGUES, Nathalie; FR
LARDJANE, Aurore; FR
DEGEORGES, Agnès; FR
Agent: LE CAM, Stéphane; FR
Priority Data:
16/6192005.12.2016FR
Title (EN) TYRE INCLUDING A LIGHTWEIGHT CROWN REINFORCEMENT
(FR) PNEUMATIQUE COMPORTANT UNE ARMATURE DE SOMMET ALLÉGÉE
Abstract: front page image
(EN) The invention relates to a tyre that comprises a crown reinforcement made up of two working crown plies, in which the inner-liner plies comprise carbon black, and a ply of circumferential reinforcement elements. According to the invention, the reinforcement elements of the working crown plies are metal cables having a diameter smaller than 1.3 mm, at least one wire of each metal cable of at least one working crown ply is of at least UHT grade, the modulus of elasticity of the inner-liner plies of the working crown plies is lower than 8 MPa, and the inner-liner plies of the working crown plies have a volume resistivity ρ such that log(ρ) is higher than 8.
(FR) L'invention concerne un pneumatique comprenant une armature de sommet formée de deux couches de sommet de travail,dont les couches de calandrage comportent du noir de carbone, et d'une couche d'éléments de renforcement circonférentiels. Selon l'invention,les éléments de renforcement des couches de sommet de travail sont des câbles métalliques présentant un diamètre inférieur à 1.3 mm, au moins un fil de chaque câble métallique d'au moins une couche de sommet de travail est de grade au moins UHT, le module d'élasticité des couches de calandrage des couches de sommet de travail est inférieur à 8, MPa et les couches de calandrage des couches de sommet de travail présentent une résistivité électrique volumique ρ telle que log(ρ) est supérieur à 8.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)