Metal tyre bead and relative manufacturing method

摘要

To form a metal bead for a tire, two integral portions (5, 6) of a single length (3) of wire are wound in opposite directions about an axis (4) to form a bundle (2); and the free ends (7) of the two portions (5, 6) are positioned substantially coaxially and adjacent to each other along the outer periphery (10) of the bundle (2), and are connected integrally to each other to form a bead (2) with a substantially constant section along its whole length.