Compagnie Generale Des Etablissements Michelin

Compagnie Générale Des Etablissements Michelin-michelin & Cie

Jean-Pierre Cesar

Andre Schneider

Jacques Gouttebessis

Jean-Louis Charvet

Antoine Massy

Tire intended for heavy loads and to be inflated to a high pressure

In order to obtain a bead ring for tires which is both lighter and stronger than the known bead rings, the bead ring is formed of an annular core, for example of steel, surrounded by at least one layer formed of at least one strand of continuous nonmetallic filaments which are practically parallel to each other and free of impregnation, which strand is wound around the core in the same direction to a layer thickness at least equal to twice the average diameter of a filament and with a winding pitch p less than 2.sqroot.ac (in which a is the radius of a circle equivalent to the perimeter of the cross section of the core and c is the average circumference of the core) and a twist in the same direction as the winding and equal to one turn per pitch.

Bead rings for tires

A process of manufacturing tires having a crown reinforcement from one or more liquid or pasty materials which solidify in a core mold is improved due to the fact that prior to the filling of the mold there is placed in the mold an elastically deformable annular net formed of two superimposed plies of parallel wires crossed from one ply to the other at an angle at most equal to 90.degree. with respect to the circumferential direction of the tire, at least the outside of the wires being formed of an elastic and weldable material permitting welding of the wires of one ply to those of the other ply at the points where they intersect, the net being placed in the mold with its edges equidistant from the equatorial plane of the tire.

Process for the manufacture of tires by molding and tires obtained by

In a process of manufacturing a tire for vehicle wheels, an annular crown reinforcement is placed around the carcass of the tire. As the crown reinforcement there is used at least one elastically deformable annular net formed of two superimposed plies of wires at least the outside of which wires is formed of an elastic and weldable material. At the points of intersection these wires are welded to each other. The wires may also be in the form of a cable, metallic or otherwise, enclosed in a sheath of an elastic and weldable material.

Growing community of inventors

Sayat, France

Jean-Pierre Cesar