Abstract: A safety support for supporting the tread of a vehicle tire in case of the oss of inflation pressure of the tire has the shape of a Z. The base of the support is fixed to a wheel rim while the connector between the support base and the support top is oriented so as to join the base on a side thereof opposite that facing the vehicle to which the tire is mounted. The asymmetric shape of the support and its orientation produces improved stability upon intervention of the support.

Abstract: A method and device (1) for melting an organic product (4) by microwaves. e device (1) comprises electromagnetic field produced by at least one waveguide (6) for microwaves fastened to a metal receptacle (3) containing the initial solid organic product (4). The microwaves effect the melting of the solid (4) with the formation of an upper liquid layer (11). Means (12) make it possible to erode the still solid part of the product (4) which is in contact with the liquid (11).

Abstract: A pneumatic tire has a carcass which is formed, at least in part, of a regenerated cellulose fiber. The fiber is formed of at least one filament having a base of cellulose and/or at least one cellulose derivative containing cellulose ester groups, at least a part of these ester groups being formate groups.

Abstract: A method of obtaining a reinforcing assembly comprising reinforcement threads and a solid matrix is characterized by the fact that reinforcement threads surrounded individually by a sheathing of organic material I and furthermore surrounded by another sheathing of organic material II are grouped together, by the fact that the material II is caused to migrate into voids between the threads sheathed with material I and by the fact that the material II is caused to solidify.

Abstract: A method of obtaining a reinforcing assembly comprising reinforcement threads and a solid matrix is characterized by the fact that reinforcement threads surrounded individually by a sheathing of organic material I and furthermore surrounded by another sheathing of organic material II are grouped together, by the fact that the material II is caused to migrate into voids between the threads sheathed with material I and by the fact that the material II is caused to solidify.

Abstract: A tire with a crown comprising a strengthening reinforcement and at least one protective ply arranged above the strengthening reinforcement is characterized by the fact that the protective ply has the following features: it comprises a three-dimensional fabric impregnated with rubber; the fabric comprises warp threads and woof threads; the warp threads and the woof threads undulate; the warp threads and the woof threads are made with one or more materials whose rupture stress is less than 140 kg/mm.sup.2 ; and the porosity of the fabric before impregnation with rubber varies from 60% to 90%.

Abstract: A tire produced from at least one liquid or paste material which solidifies in a tire mold to form the elastomeric material of the tire, consisting of a crown with two shoulders each connected to a sidewall terminating in a bead containing at least one bead ring, is characterized by the fact that it comprises a number of successive discrete radial hoops which are equally spaced apart in the longitudinal direction of the tire, are identical, consist at least in part of a moldable material, are embedded in the elastomeric material of the tire, are continuous from one bead to the other and are provided at each of their ends with a hook within which the bead ring is arranged, the hook being provided with at least one extension which extends up to a wall of the tire, and by the fact that the hoops, which are manufactured flat, are bent or curved by bringing the bead rings towards each other in the axial direction in order to impose upon the hoops a meridian trajectory corresponding substantially to the meridian cu

Abstract: In order that the stresses upon travel will be as small as possible in the region of the shoulders of a tire, it is molded between a mold and a core which together define a central zone and two lateral zones and, in each of the latter two, the median line of the sidewalls has a point of inversion of curvature located at a distance from the crown of the tire which is greater than the distance of the point of inversion of curvature of the median line of the sidewalls of the tire when mounted on its rim.

Abstract: An installation for manufacturing articles from one or more liquid or pasty materials which solidify in a mold, said material or materials resulting from the mixing, prior to its or their introduction into the mold, of at least two liquid and/or pasty components in a mixer comprising a chamber, a mixing device arranged in the chamber, at least two feed conduits for the components arranged at one end of the chamber, each feed conduit feeding a different component to the chamber, and a discharge conduit for the mixture arranged at the other end of the chamber is improved due to the fact that the mixer is provided with an axis of rotation which is perpendicular to the average direction of flow of the mixture which passes through the chamber and with a control which makes it possible to reverse the direction of flow of the mixture with respect to the gravitational field of the earth.

Abstract: 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.