Compagnie Générale Des Etablissements Michelin-Michelin & Cie

Michelin Recherche Et Technique S.a.

Jean-Michel Tatraux-Paro

Monique Boissonnet

Alain Vaxelaire

Patrice Gauthier

The resistance to unseating of at least one tire mounted on a mounting rim and inflated to a predetermined pressure is determined by mounting the tire/rim unit on a vehicle in a steering axle position. The vehicle is set in motion in a straight path and stabilized at a predetermined speed. The steering wheel is then rotated to impose a steering angle which is maintained so that the vehicle travels along a circular trajectory arc. If the tire does not unseat, increases in the steering angle are made periodically so that the vehicle travels in progressively tighter circular trajectory arcs until either the tire becomes unseated or the steering wheel reaches its terminal stop.

Method of unseating a tire

A method for obtaining a tire comprising a colored motif and a decal inted to be applied to the outer surface of a vulcanized rubber tire. The decal is made of a thin sheet serving as temporary support for a motif made with one or more vulcanizable colored inks. The support has at least one cutout having a shape adapted to permit the fitting therein of at least one element in relief protruding from the surface of a tire at the place selected for the colored motif.

Decal for vulcanized tires and method of obtaining a tire having a

A wheel for motor vehicles in which a rim (2) of composite material and a tal disk (3) are assembled to each other by an assembly edge (6) formed by the free peripheral end of the disk (3) and the assembly edge (6) is embedded in the rim (2) in such a manner that both faces of the edge are covered by the rim. A method of manufacturing such a wheel which includes the steps of producing the metal disk (3), then positioning the free peripheral end (6) of the disk (3) in a mold, and molding the rim (2) on the end, the rim covering the two faces of the end (6).

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Clermont-Ferrand, France

Jean-Michel Tatraux-Paro