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AssigneesMichelin Recherche et Technique S.A., Compagnie Generale Des Etablissements Michelin
InventorsPhilippe Johnson, Alain Domingo
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A tire comprising a crown reinforcement formed from at least two working crown layers and from at least one layer of circumferential reinforcing elements positioned radially between two working crown layers, the working crown layers adjacent to the layer of circumferential reinforcing elements being on each side of the equatorial plane and in the axial continuation of the layer of circumferential reinforcing elements coupled over an axial width, in order thereafter to be decoupled. A first additional layer of polymer blend having a width at least equal to the width 1 of the coupling zone and having a maximum thickness of less than two times the thickness of the layer of circumferential reinforcing elements is positioned radially under the working crown layer radially adjacent to and inside the layer of circumferential reinforcing elements and is at least partially radially superposed on the coupling zone of the working crown layers.
A tire with a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of inextensible reinforcing elements, crossed from one layer to the other making angles of between 10° and 45° with the circumferential direction, itself radially capped by a tread, the tread being connected to two beads via two sidewalls, the crown reinforcement comprising at least one layer of circumferential reinforcing elements positioned radially between two working crown layers, the working crown layers adjacent to the layer of circumferential reinforcing elements being on each side of the equatorial plane and in the axial continuation of the layer of circumferential reinforcing elements coupled over an axial width 1, in order thereafter to be decoupled by profiled elements of rubber compound at least over the remainder of the width common to the two working layers, wherein a first additional layer of polymer blend having a width at least equal to the width 1 of the coupling zone of the working crown layers and having a maximum thickness of less than two times the thickness of the layer of circumferential reinforcing elements is positioned radially under the working crown layer radially adjacent to and inside the layer of circumferential reinforcing elements and does not extend axially outward from the equatorial plane further than the decoupled remainder of the axial width common to the two working layers, and in that the first additional layer of polymer blend is at least partially radially superposed on the coupling zone of the working crown layers, and wherein the position of the first additional layer of polymer blend controls a position of a radial displacement of the radially interior working crown layer, and the thickness of the first additional layer of polymer blend controls an amount of the radial displacement of the radially interior working crown layer, thereby coupling the radially interior working crown layer with the radially exterior working crown layer.
A process for manufacturing a tire with a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of inextensible reinforcing elements, crossed from one layer to the other making angles of between 10° and 45° with the circumferential direction, itself radially capped by a tread, the tread being connected to two beads via two sidewalls, the crown reinforcement comprising at least one layer of circumferential reinforcing elements positioned radially between two working crown layers, the working crown layers adjacent to the layer of circumferential reinforcing elements being on each side of the equatorial plane and in the axial continuation of the layer of circumferential reinforcing elements coupled over an axial width 1, in order thereafter to be decoupled by profiled elements of rubber compound at least over the remainder of the width common to the two working layers,
Dependencies are inferred from the claim text.