B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
B60C 9/20 (2006.01)
Patent
CA 2453493
The invention concerns a tyre with radial carcass reinforcement designed to equip a heavy vehicle such as a transport vehicle or a civil engineering machine. It concerns in particular a tyre having an axial length more than 37 inches. The inventive tyre comprises a crown reinforcement (24) consisting of at least two continuous working plies (15, 16, 17, 18) which is completed on each side of a circumferential median plane by at least two half-plies (19, 20) whereof the metal reinforcing elements form with the circumferential direction angles greater than the smallest of the angles of the reinforcing elements of the continuous plies, the half-ply with outermost axial extension being in contact with the axially largest continuous working crown ply and the two-half-plies radially overlapping the axially outer end of said axially largest working ply.
L'invention concerne un pmeumatique à armature de carcasse radiale destiné à équiper un véhicule lourd tel qu'un véhicule de transport ou un engin de "Génie Civil". Il s'agit notamment d'un pneumatique qui présente une largeur axiale supérieure à 37 pouces. Le pneumatique selon l'invention comporte une armature de sommet de travail (24), constituée d'au moins deux nappes continues de travail (15,16,17,18), qui est complétée de chaque côté du plan médian circonférentiel par au moins deux demi-nappes (19,20) dont les éléments de renforcement métalliques font avec la direction circonférentielle des angles supérieurs au plus petit des angles des éléments de renforcement des nappes continues, la demi-nappe s'étendant axialement le plus vers l'extérieur étant au contact de la nappe continue de sommet de travail axialement la plus large et les deux demi-nappes recouvrant, radialement, l'extrémité axialement extérieure de ladite nappe de travail axialement la plus large.
Giraud Jacques
Palgen Marie-Claude
Michelin Recherche Et Technique S.a.
Robic
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