Bridgestone Europe Nv/sa

Bridgestone Corporation

Marco Toscano

Shintaro Hayashi

Fabio Tomassi

Marco Del Duca

Nello Palomba

Marco Andrea Maggi

Marco Poggi

Enrico Sabbatini

Gabriele De Filippis

Antonio Scarale

Tire

Tire tread

A tyre including two toroidal bead portions housing an annular bead bundle (); a toroidal body ply, folded, about a respective bead bundle forming a respective turn-up; two bead fillers, each in contact with a respective bead bundle and at least partly enclosed by a respective turn-up, and two elastomeric crack control members, one for each bead portion. Each crack control member extends at a body ply ending, and each crack control member is made by a couple of strips having a differentiated stiffness along their transversal section, with a lower stiffness at a first strip adjacent to the body ply ending and a higher stiffness at a second strip in contact with the respective bundle, so that the first lower stiffness strip defines a preferential propagation path for any tyre crack originating at the body ply folded ending.

Tyre and method for making a tyre

A tire () has two annular beads, a toroidal body ply () which is wound about the two beads () to form two turn-ups, and two bead fillers (). Each bead filler () contacts a bead () and is at least partly enclosed in a turn-up () of the body ply (), and comprises an elastomer filler strip () which is wound about the bead () and is interposed between the bead () and the body ply () and has two opposite ends () located on opposite sides of the bead () and contacting each other. An outer end () of the filler strip () of each bead filler () is folded into a 'U' about the corresponding end of the body ply () so as to enclose the end of the body ply ().

Tire with filler strips enclosing bead cores and ply ends

Growing community of inventors

Rome, Italy

Marco Toscano