Michelin Recherche Et Technique S.a.

Compagnie Generale Des Etablissements Michelin

Denis Alvarez

Christian Signoret

Henri Barguet

Thibaud Pottier

Tire comprising a crown surmounted by a tread, a crown reinforcement, two sidewalls and two beads, a carcass reinforcement passing into the two sidewalls and anchored by means for anchoring in the two beads, said anchoring means comprising, in at least one bead, a circumferential alignment of at least one anchoring reinforcing member oriented circumferentially and cooperating with a rubber composition referred to as 'anchoring rubber'; this tire is characterized in that this anchoring reinforcing member is a metal cable having two layers of construction M+N comprising an inner layer Cof M wires of diameter dwound together in a helix at a pitch p, this layer Citself being surrounded by an outer layer Cof N wires of diameter dwound together in a helix at a pitch p, this anchoring cable furthermore having the following characteristics (d, d, pand pin mm):2&#x2266;M&#x2266;4+3&#x2266;70.25&#x3c;d&#x3c;0.40;0.25&#x3c;d&#x3c;0.40;3.5&#x3c;p&#x3c;7&#x3c;p&#x3c;14.

Tire and metal/rubber composite therefor

Metal cable having two layers of construction 4+N comprising an inner layer Cof 4 wires of diameter dwound together in a helix at a pitch p, this layer Citself being surrounded by an outer layer Cof N wires of diameter dwound together in a helix at a pitch p, characterized in that said cable furthermore has the following characteristics (d, d, pand pin mm): Such a cable, of preferred construction 4+9, is in particular usable for reinforcing tires, in particular as an anchoring means for a carcass reinforcement of a tire without a solid bead wire.

Wire rope for a tire

Tire having a crown, a crown reinforcement, sidewalls and beads, a carcass reinforcement passing into the sidewalls and anchored in the beads. The anchoring is accomplished, in at least one bead, by a circumferential alignment of an anchoring reinforcing member oriented circumferentially and cooperating with a rubber composition. The anchoring reinforcing member is a metal cable having a construction M+N with an inner layer Cof M wires of diameter dwound together in a helix at a pitch p, this layer Cbeing surrounded by an outer layer Cof N wires of diameter dwound together in a helix at a pitch p. This anchoring cable satisfies (d, d, pand pbeing expressed in mm): 2&#x2266;M&#x2266;4, M+3&#x2266;N &#x2266;M+7, 0.25 &#x3c;d&#x3c;0.40, 0.25 &#x3c;d&#x3c;0.40, 3.5 &#x3c;p&#x3c;7&#x3c;p&#x3c;14.

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Clermont-Ferrand, France

Denis Alvarez