Abstract: Prevulcanized tread strip (1, 10) including a cap (2) and two side wings 20, 30), such that each lateral end of said wings (3, 20, 30) ends in a bead (4, 21, 31) made of elastomeric material with a substantial thickness in the region intended for connection to a tire carcass.

Abstract: An improved mold (1) for the molding and vulcanizing of annular treads inded, in particular, for the recapping of tires, which includes at least one rigid core (3) defining the inner surface of the tread and a collar (2) divided into sectors (21) which are movable radially between an open position and a closed position of the collar (2) for the molding of the outside of the tread, characterized by the fact that the core (3) bears movable annular elements (5) for the tight connection of the core (3) to the sectors (21) whatever the position of the latter between the closed position of the collar (2) and a slightly apart position of the sectors (21), and that the sectors (21), the core (3), and the annular element (5) define the molding space of the tread.

Abstract: Mold for a tire or for an annular tread member of a tire, including a mullicity of sectors moving radially and closed by the axial displacement of a crown coming to act upon the frusto-conical sector seats, and of an annular element, midway between the crown and the sector seats, intended to permit axial retraction of the crown when the internal pressure in the cavity of the mold exceeds a given threshold of pressure.