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1. (WO2007003558) TYRE FOR HEAVY VEHICLES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/003558 International Application No.: PCT/EP2006/063654
Publication Date: 11.01.2007 International Filing Date: 28.06.2006
IPC:
B60C 9/20 (2006.01) ,B60C 9/18 (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
9
Reinforcements or ply arrangement of pneumatic tyres
18
Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
Applicants:
Société de Technologie MICHELIN [FR/FR]; 23, Rue Breschet F-63000 Clermont-Ferrand, FR (AE, AG, AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BW, BY, BZ, CF, CG, CH, CI, CM, CN, CO, CR, CU, CY, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GW, HN, HR, HU, ID, IE, IL, IN, IS, IT, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, MG, MK, ML, MN, MR, MW, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SI, SK, SL, SM, SN, SY, SZ, TD, TG, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, ZA, ZM, ZW)
MICHELIN Recherche et Technique S.A. [CH/CH]; Route Louis Braille 10 et 12 CH-1763 Granges-Paccot, CH (AllExceptUS)
COUE, Jean [FR/FR]; FR (UsOnly)
RADULESCU, Robert [US/US]; US (UsOnly)
BARBARIN, François [FR/FR]; FR (UsOnly)
Inventors:
COUE, Jean; FR
RADULESCU, Robert; US
BARBARIN, François; FR
Agent:
LE CAM, Stéphane; Manufacture Française des Pneumatiques MICHELIN 23, Place des Carmes-Déchaux SGD/LG/PI - F35 - Ladoux F-63040 Clermont-Ferrand Cedex 9, FR
Priority Data:
050676130.06.2005FR
Title (EN) TYRE FOR HEAVY VEHICLES
(FR) PNEUMATIQUE POUR VEHICULES LOURDS
Abstract:
(EN) The invention concerns a tyre with radial carcass reinforcement comprising a crown reinforcement consisting of at least two working crown plies of inextensible reinforcing elements, crossed from one ply to the next forming with the circumferential direction angles ranging between 10° and 45°, itself radially capped with a running tread, said running tread being assembled to two beads via two sidewalls and at least two working plies with different axial widths. The invention is characterized in that at least one first extruded section P of rubber mixture separates one working ply of least one end from one end of a second axially narrower layer, said extruded section P being radially separated at least partly from a liner C of said axially narrower working ply by a second extruded section of rubber mixture G, said first and second extruded sections of rubber mixture P and G and said liner C having respectively secant moduli of elasticity under tension at 10 % elongation MP, MG, MC such that MC > MG and MG > MP, said tyre further comprising in each shoulder at least one layer of reinforcing elements, mutually parallel and oriented substantially perpendicular relative to the reinforcing elements of the working ply radially adjacent said additional layer, and the axially inner end of said additional layer being radially adjacent the edge of at least one working crown ply.
(FR) L'invention concerne un pneumatique à armature de carcasse radiale comprenant une armature de sommet formée d'au moins deux couches de sommet de travail d'éléments de renforcement inextensibles, croisés d'une nappe à l'autre en faisant avec la direction circonférentielle des angles compris entre 10° et 45°, elle-même coiffée radialement d'une bande de roulement, ladite bande de roulement étant réunie à deux bourrelets par l'intermédiaire de deux flancs et au moins deux couches de travail ayant des largeurs axiales différentes. Selon l'invention, au moins un premier profilé P de mélange caoutchouteux sépare une couche de travail d'au moins une extrémité d'une deuxième couche axialement plus étroite, ledit profilé P étant radialement séparé au moins en partie du calandrage C de ladite couche de travail axialement plus étroite par un second profilé de mélange caoutchouteux G, lesdits premier et second profilés de mélange caoutchouteux P et G et ledit calandrage C ayant respectivement des modules sécants d'élasticité sous tension à 10 % d'allongement MP, MG, MC de sorte que MC > MG > MP, ledit pneumatique comprenant additionnellement dans chaque épaule au moins une couche d'éléments de renforcement, parallèles entre eux dans la couche additionnelle et orientés sensiblement perpendiculairement par rapport aux éléments de renforcement de la couche de travail radialement adjacente à ladite couche additionnelle, et l'extrémité axialement intérieure de ladite couche additionnelle étant radialement adjacente au bord d'au moins une couche de sommet de travail.
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, 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, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
EP1899175JP2008544910US20090107606CN101213086CA2611202FR2887807