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1. (WO2018104617) TYRE INCLUDING A LIGHTWEIGHT CROWN REINFORCEMENT
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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)
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
C
VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
9
Reinforcements or ply arrangement of pneumatic tyres
18
Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
20
built-up from rubberised plies each having all cords arranged substantially parallel
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
C
VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
1
Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
C
VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
9
Reinforcements or ply arrangement of pneumatic tyres
18
Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
20
built-up from rubberised plies each having all cords arranged substantially parallel
22
the plies being arranged with all cords disposed along the circumference of the tyre
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
C
VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
9
Reinforcements or ply arrangement of pneumatic tyres
D TEXTILES; PAPER
07
ROPES; CABLES OTHER THAN ELECTRIC
B
ROPES OR CABLES IN GENERAL
1
Constructional features of ropes or cables
06
Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
D TEXTILES; PAPER
02
YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
G
CRIMPING OR CURLING FIBRES, FILAMENTS, YARNS, OR THREADS; YARNS OR THREADS
3
Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
44
Yarns or threads characterised by the purpose for which they are designed
48
Tyre cords
Applicants:
COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN [FR/FR]; 23 place des Carmes-Déchaux 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:
(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.
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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)