Abstract: This invention relates to a radial ply tire containing an improved breaker structure, whereby, in addition to good characteristics of road holding and driving safety, also good features of comfort are obtained.The breaker structure comprises at least two layers of metal cords, the cords of each layer being parallel and crossing those of the adjacent layer, said cords forming an angle between 10.degree. and 35.degree. with the equatorial axis of the tire, and at least one additional layer of textile cords arranged in a radially outermost position, said cords being orientated in the circumferential direction of the tire, which reduce in length when subjected to influence of heat, at least part of said textile cords having a limited length, less than that of the corresponding circumferential development of the tire.

Abstract: A process for sheathing a cable core with metal in which the core is immersed in oil in a container and is transferred from the container to the sheath extruder in a siphon tube in which oil flows in a direction opposite to the direction of movement of the core. From the extruder, the metal sheathed core is transferred to a drum and during such transfer the core is subjected to oil under pressure. Prior to inserting the core in the siphon tube, the latter is evacuated and filled with degassed oil. The apparatus comprises a stainless steel siphon tube with one end in the container and the other end connected to the extruder. The siphon tube has a higher intermediate portion to which a piezometric column and a pump are connected and has a coupling adjacent the extruder for supplying degassed oil to the siphon tube.

Abstract: An electrical device for signaling a change in physical conditions within a vehicle pneumatic tire mounted on a rim has a sensing element containing at least two electrical contacts which are closed or open to the flow of an electrical current depending upon the physical conditions in the tire, a pair of electrodes connected to the contacts and passing through the wall of the rim, an electrical signaling circuit disposed outside the rim, connected with the electrodes and controlled by the position of the two contacts, the electrical circuit being enclosed in a mass of cross-linked synthetic resin to protect it from excessive wear due to dust, rain and mud.

Abstract: A radial tire having a breaker structure constituted by a strip of metal cords, inclined with respect to the equatorial axis of the tire, having folded external edges, and by a layer of textile cords, arranged in a direction parallel to the equatorial axis of the tire, superimposed to the strip with folded edges.

Abstract: A method for discharging a cured tire from a mold in which method the lower sidewall of the tire is disengaged from the lower section of the mold by raising the tire with respect to the position in which it had been cured while maintaining the sections of the mold at its tread and upper sidewall in contact with the tire, then disengaging the section at its tread by moving said section radially outwardly while simultaneously pushing the tire and section at its upper sidewall downward to a level lower than that corresponding to the lower surface of the section of the mold for the tire's tread, displacing the section for the tire tread inwardly until its diameter is less than the outer diameter of the tire and finally raising the tire and the upper section for the upper sidewall until the tire is disengaged from the upper sidewall section.

Abstract: A sealing device for hot fluid curing units comprising a pair of telescopically slidable tubular bodies provided with means for originating a relative movement of said bodies with respect to each other and to the curing unit, the material travelling in said unit passing through said tubular bodies.Each tubular body incorporates an expansible and collapsible ring ensuring tightness between the tubular body and the material to be treated, so that a continuous movement of the material travelling in the curing unit can be obtained.

Abstract: A method is disclosed for accurately and readily forming a continuous band of rubberized fabric having transversal reinforcing metal elements by butt-splicing wherein a first and second piece of rubberized fabric having transversal reinforcing metal elements are positioned such that the initial end of the second piece is a predetermined distance from the terminal end of the first piece on a common plane with the reinforcing metal cords running parallel to the ends of the pieces, butt-splicing the pieces, without overlapping, by mutually approaching the pieces, obtaining a uniform accumulation of the rubber of the rubberized fabric about the reinforcing cords as well as a local thickening of the latter at a zone symmetrically situated with respect to the contact surface of the ends and whose width is proportional to the pre-established distance wherein the pieces are bound by the operating parts of the splicing apparatus, releasing the pieces from the operating parts of the splicing apparatus and winding up th

Abstract: A non-woven fabric having a fibrous surface similar to that of leather and high mechanical characteristics so that it is adapted for use as a substitute for leather in industrial applications is prepared by saturating a matt of fibers with an elastomeric polyurethane which can be cross-linked with moisture. The so obtained composite laminar structure, having a thickness of from 0.1 to 10 mm, has a density of about 0.85 to 1.4 g/cm.sup.3, a hardness of 85 to 95 Shore A and a tensile strength of about 1.5 to 2.5 kg/mm.sup.2, and possesses a water-vapor permeability in the range of about 30 to 100 g/m.sup.2 /24 hours according to DIN 53 333.

Abstract: A handrail constituted by a structural shape, C-shaped in cross section, made of elastomeric material and embedding a tension-resistant structure formed by an inextensible cord, which confers inextensibility to the handrail only at the line defined by the intersection between the neutral plane and the plane of symmetry of the handrail.

Abstract: Method and apparatus for replacing a portion of the insulating sheath of a submarine electric cable when the ends are inaccessible in which a split extrusion mold is placed around the cable and secured to the head of an extruder which is mounted on a carriage movable axially of the cable. The cable is held in a fixed position and as new insulating material is injected into the mold and extruded over the portion of the cable from which the old insulation has been removed, the carriage is moved at a rate dependent upon the extrusion rate. The interior of the mold may be subjected to vacuum. Alternatively, the mold may be held stationary and the cable moved axially thereof.

Abstract: An annular element adapted to be used as an endless belt for false twist machines or the like has a plurality of layers of non-woven fabric impregnated with a cross-linked elastomer, the non-woven fabric weighing from about 10 to about 50 grams per square meter prior to impregnation.

Abstract: An optical fiber band comprising a pair of thermally sealed thermoplastic films with a plurality of optical fibers in side-by-side relation and following undulate paths embedded therebetween, and a telecommunication signal cable formed by winding a plurality of such bands around an insulated metal rope. The thermoplastic films and the fibers are fed between rollers or cylinders while the fibers are undulated. The films are heated to their softening temperature on at least parts of their facing surfaces prior to reaching the cylinders. The films may each be composite films of different temperature characteristics or may be wider than the final band, heated only at their central portions and then trimmed to the final band size.The present invention relates to an optical fiber cable for transmitting signals and which is particularly useful as a telecommunication cable.As is known in the art, optical fibers are fibers of glass or of synthetic plastic material, having a very small diameter, of the order of 0.

Abstract: A reinforced plastic or elastomeric drive belt having tooth-like protuberances for meshing with the teeth of a pulley is provided with a fabric covering over the toothed surface which is more rigid and more resistant to flection stresses than the body of the belt.

Abstract: A mold for shaping a belt having teeth on opposite sides thereof has a hollow cylindrical mandrel with a surface configuration corresponding to alternate grooves and teeth to be formed on one side of the belt and a plurality of bars arranged side by side around the mandrel having surfaces facing the mandrel corresponding to the configuration of teeth and grooves to be formed on the opposite side of the belt. The bars are supported in radially spaced relation with the mandrel surface in slots in the peripheral surface of end members for the cylinder and are adapted to move under pressure radially inwardly.