Lighter hybrid bead wire for tyre
AssigneeCompagnie Generale Des Etablissements Michelin
InventorsLaurent Bucher, Jean-Michel Huyghe, Antonio Delfino, Jean-Paul Meraldi, Thibault Rapenne
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Abstract
A bead wire for a tire includes a core, an outer layer, and at least one intermediate layer. The core includes at least one yarn of a multifilament textile fiber embedded in an organic matrix. The outer layer includes an outer-layer metal wire wound around the core. Each intermediate layer includes an intermediate-layer metal wire wound around the core. Each intermediate layer is disposed between the core and the outer layer.
Claims18
A bead wire for a tyre, the bead wire comprising:
- a core that includes a single yarn of a multifilament textile fibre embedded in an organic matrix, the multifilament textile fibre including a plurality of elementary filaments;
- an outer layer including an outer-layer metal wire wound around the core;
- and
- at least one intermediate layer, each intermediate layer including an intermediate-layer metal wire wound around the core,
- wherein the core forms a monolithic torus having no macroscopic joint corresponding to a joining of ends to form the torus,
- wherein the multifilament textile fibre is embedded in the organic matrix such that the elementary filaments are positioned side by side, and
- wherein each intermediate layer is disposed between the core and the outer layer.
A tyre comprising at least one bead wire, each bead wire including:
- a core that includes a single yarn of a multifilament textile fibre embedded in an organic matrix, the multifilament textile fibre including a plurality of elementary filaments;
- an outer layer including an outer-layer metal wire wound around the core;
- and
- at least one intermediate layer, each intermediate layer including an intermediate-layer metal wire wound around the core,
- wherein the core forms a monolithic torus having no macroscopic joint corresponding to a joining of ends to form the torus,
- wherein the multifilament textile fibre is embedded in the organic matrix such that the elementary filaments are positioned side by side, and
- wherein each intermediate layer is disposed between the core and the outer layer.
Dependencies are inferred from the claim text.