APEXED BEAD FOR A TIRE

摘要

A method of building a tire comprises providing apexed bead with a first bead ribbon having a first bead portion including rubberized parallel extending bead wires. A first rubber apex leaf extends laterally from the first bead portion. A second bead ribbon has a second bead portion with rubberized parallel extending bead wires. A second rubber apex leaf extends laterally from the second bead portion. The second bead portion is located radially of said first bead portion to form a bead. The first and second apex leafs radially contact each other to form an apex with a substantially triangular cross-section taken in a plane extending transverse to the bead wires. The apex extends laterally from and integral with the bead. The apexed bead is placed radially of a cylindrically formed tire carcass ply. An axial end of the carcass ply is turned around the apexed bead. The apex portion is moved from an axial surface of the bead portion to a radial surface of the bead portion. d1h/2046 - 8/28/90