Abstract: A wheel is formed of a rim and a wheel disk, the rim having a first rim s and a second rim seat, at least the first rim seat having a generatrix which is inclined towards the outside and extended axially towards the inside by a bearing surface intended to receive a tread support ring. The rim bearing surface is provided, radially to the outside, with elements in relief separated by recesses or hollows. On the major part of the entire surface of the radially inner wall of the wheel rim, each point of a generatrix of the radially inner wall, included between the point of tangency A of said generatrix with the corresponding axially inner generatrix of the disk and the end B axially located on the end of the second wheel seat, is on a circle of diameter D.sub.P which is at least equal to the diameter D.sub.A of the circle on which the point of tangency A is located and at most equal to the diameter D.sub.B of the circle on which the end B is located.

Abstract: A decorative laminate for articles of elastomeric material in which a layer of pigments is sandwiched between an adhesive covering and a protective vering. The two coverings are produced from aqueous emulsions of at least one homopolymer or a copolymer having a base of at least one monomer selected from the group consisting of acrylic, methacrylic and vinyl esters, and having a glass transition temperature less than 0.degree. C.

Abstract: Process and device for treating vulcanized rubber surfaces before bonding creating surface roughness and elimination of degraded surface particles through the use of a high-pressure fluid jet.

Abstract: A rubber composition which has a reduced hysteresis making it particularly suitable for use as a tread of a tire having reduced rolling resistance, including silica as predominant reinforcing filler and at least one diene polymer bearing, as a chain end, a silanol functional group or a polysiloxane block which has a silanol end.

Abstract: A tread for a heavy-duty vehicle tire having radial carcass reinforcement rmounted radially by crown reinforcement which tread has grooves that can be regrooved and wherein those parts of the tread that are located radially under the grooves include depth indicators, each indicator indicating the minimum depth that can be reached for effective regrooving and the maximum depth that must never be exceeded.

Abstract: A drum is provided for building of a tire. The drum includes a central sh supporting two plates mounted axially and sliding thereon and a plurality of rods are articulably mounted on each plate. The rods of each plate are covered by a sleeve and a membrane is connected to each of the sleeves. A mantle covers the assembly to provide a surface on which the tire is progressively constructed. A process for assembling a tire with the drum is also disclosed.

Abstract: A radial "heavy vehicle" tire, of H/S form ratio of at most 0.60, with a wn reinforcement (2) composed of at least two crossed working plies (21, 22), and at least one ply (20) of circumferential cables arranged above the carcass ply (1) and a tread (10) of width L, characterized in that there is arranged, between the ply of circumferential cables (20) and the first, radially innermost, working ply (21), a layer of rubber mix (4) of low modulus of extension, of constant thickness of between 2 and 3 mm.

Abstract: A process for the manufacture of a rim preform or rim-element having an axis of revolution by the placing on a preforming matrix pre-assembled fibers along two orientations defining deformable meshes. A winding of a strip of fibers is fastened on a circumference of the preforming matrix with asymmetrical orientation of the fibers, whereupon it is applied progressively until covering the entire surface of the preforming matrix by subjecting it to tensions of substantially circumferential orientation.

Abstract: A hub and hub-holder assembly for vehicles equipped with a central tire iation system having a rotating joint such that tightness is assured by wear-resistant rigid parts during the inflation of the tires.

Abstract: In order to rationalize and make profitable the use of machines for positing the beads of tires for finishing mounted, deliverable assemblies, the machine according to the invention comprises two plates (10), one upper and one lower, each provided with at least two cylindrical rings (4), of different diameters and axially movable independently, and also means (3, 5, 7, 11, 12, 13) which, according to the dimension of the tire of the mounted assembly E to be treated, permit the selection of the appropriate rings (4', 4"), and the adjustment of the axial distance necessary between rings, and sufficient to obtain the desired compression of the sidewalls of the tire, after application of said rings to the sidewalls of the tire of the assembly E.

Abstract: A device for supporting the tread of a tire which includes a rigid support 1) and an elastic top cap rubber (2) made of a vulcanized rubber compound, a lubricant (5) arranged between said support (1) and said top cap rubber (2) allowing circumferential displacement between the support (1) and the top cap rubber (2), wherein each shoulder (122) of the bearing ring (12) of the support (1) is equipped on its edge with at least one straight circumferential groove (124) in which there is housed the corresponding circumferential rib (25) of the radially internal face (200) of the top cap rubber (2), said rib (25) being in contact with the bottom of the groove (124) of the support (1).

Abstract: A rubber composition having improved hysteretic and physical properties which make it particularly suitable for forming a tire tread of reduced rolling resistance, comprising carbon black having silica fixed to its surface as the majority portion of reinforcing filler and at least one diene polymer functionalized by means of a functionalizing agent of general formula:(Y).sub.m --R.sup.1 --Si(OR.sup.2).sub.3-n R.sup.3.sub.n.

Abstract: Aqueous composition intended to form an antimigration and antiozone protective coating on the external surface of a tire, comprising an aqueous emulsion of at least:(a) a polymer called constituent I, said constituent I being a homopolymer or copolymer based on at least one monomer chosen from the group of acrylic, methacrylic and vinyl esters and having a glass transition temperature below 0.degree. C.; and(b) a constituent II chosen from the group consisting of a hydrophilic silica and a homopolymer or copolymer based on at least one monomer chosen from the group of acrylic, methacrylic and vinyl monomers, said homopolymer or copolymer having a glass transition temperature above 25.degree. C.

Abstract: A tire has a carcass reinforcement (1) which, when viewed in meridian secn, is wound in each bead B about a bead wire (2) coated with a rubber mix, passing from the heel to the toe of the bead B, the upturn (10) being located in a profile (3) of rubber mix in the form of a wedge defined by two sides (31 and 32) coming from an apex A located beneath the section of the coated bead wire (2). Advantageously the upturn (10) surrounds in its entirety the contour of the profile (3), forming either a first radially inner side (32), a lateral side (30), and a final radially outer side (31) or a first radially outer side (31), a lateral side (30), and a final radially inner side (32). The tire may form with different rims J high-performance assemblies in the event of travel at low or zero pressure, permitting simple mounting of the tires and optionally of bearing supports S for the tire tread on the rims J.

Abstract: A tire for mounting on rim with hump in which each bead:a) contains a main wire, around which the carcass fabric is wound, and a secondary wire placed outside the carcass fabric;b) the inner diameter of the main wire after mounting on the rim is greater than the diameter of the top of the hump, and its maximum elastic elongation is at most equal to 1.5%;c) before mounting on the rim, the outer diameter of the secondary wire is less than the inner diameter of the main wire; after mounting on the rim, the inner diameter of the secondary wire is less than the diameter of the top of the hump; the inner diameter of the secondary wire after mounting on the rim is 1.5 to 3% greater than the inner diameter of the secondary wire before mounting on the rim and the maximum elastic elongation of the secondary wire is at least 3%.

Abstract: Device for monitoring the tires of a vehicle, comprised of a central unit d for each wheel a measurement sensor, a rotating antenna, a stationary antenna, and metallic parts of electromagnetic coupling placed in the environment of the wheel, the hub, and the spindle.

Abstract: Each bead of a pneumatic tire has the following characteristics:a) it has no bead wire and has an annular element whose tensile strength is ppreciably less than that necessary for a bead wire;b) at least two reinforcing plies are placed in contact with or near this annular element;c) the combination of reinforcing plies has a tensile strength at least equal to that which would be necessary for a bead wire;d) the carcass ply is wrapped around the annular element;e) the outer region of the bead includes a rubber having an elastic loss modulus G" of less than 1 MPa and/or it includes a rubber whose thickness is at most equal to 2 mm.

Abstract: A tire which, during use is subjected to one or more severe stresses lead to an appreciable reduction of its potential lifetime of use under nominal conditions. In order to be able to determine whether a tire has undergone such severe conditions, the tire is provided with a monitoring device, containing at least one means sensitive to a given stress and capable of memorizing a piece of information, according to the stress to which the component has been subjected for at least a given time or a given number of cycles.

Abstract: Process for treating a body of steel to promote its adherence to a composition which includes at least a rubber, containing the following points:a body at least the surface of which is of stainless steel is used, this steel containing at least 0.02% and at most 0.2% carbon, at least 3% and at most 20% nickel, at least 12% and at most 28% chromium, the sum of the nickel and the chromium being at least equal to 20% and at most equal to 35%, all of these percentage values being by weight; the structure of the steel includes at least 20% by volume of martensite and is without austenite or it comprises less than 80% thereof by volume;the surface of the body is activated and then treated with at least one starting silane so that it is covered with a film constituted only, or substantially only, of one or more silanes, in such a manner that this surface treated in this way can be placed directly in contact with the composition.

Abstract: A valve for removable attachment to the rim of a heavy-vehicle tubeless t includes a valve base, a locking nut and a sealing joint. The valve base has a tubulure that passes through an opening in the rim, a shoulder for compressing the sealing joint against one surface of the rim and two diametrically opposite resting surfaces for engaging the rim surface and limiting the compression of the sealing joint. The locking nut cooperates with the opposite surface of the rim to compress the sealing joint against the rim.