Compagnie Générale Des Etablissements Michelin-michelin & Cie

Compagnie Generale Des Establissements Michelin - Michelin & Cie

Bernard Ravel

Guy Pouille

Renaud Rivaton

Michel Garmy

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.

Prevulcanized tire tread strip for retreading

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.

Rigid-core mold for annular treads intended, in particular, for the

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.

Tire mold with controlled internal pressure

Process and device for assembly of a tire casing (2) and a prevulcanized ular tread member (1), in view of recapping tires whose tread member is worn or production of new tires, to which the annular tread member (1) is extended by centrifugation.

Growing community of inventors

Nohanent, France

Bernard Ravel