Abstract:
Procédé de fabrication d'un câble métallique à trois couches concentriques (C1, C2, C3), du type gommé in situ c'est-à-dire pendant sa fabrication, comportant une première couche interne ou noyau (C1) autour duquel sont entourés ensemble en hélice selon un pas P 2 , en une deuxième couche intermédiaire (C2), N fils de diamètre d 2 , N variant de (3) à (12), deuxième couche autour de laquelle sont entourés ensemble en hélice selon un pas p 3 , en une troisième couche externe (C3), P fils de diamètre d 3 , P variant de (8) à (20), ledit procédé comportant les étapes suivantes :- une étape de gainage du noyau (C1) par une composition de caoutchouc dite « gomme de remplissage », à l'état non réticulé; - une étape d'assemblage par retordage des N fils de la deuxième couche (C2) autour du noyau (C1) ainsi gainé, pour formation en un point, dit « point d'assemblage » d'un câble intermédiaire dit « toron d'âme » (C1+C2); une étape d'assemblage par retordage des P fils de la troisième couche (C3) autour du toron d'âme (C1+C2); une étape d'équilibrage final des torsions. Dispositif pour la mise en œuvre d'un tel procédé.
Abstract:
La présente invention concerne un câble métallique utilisable pour renforcer une armature de carcasse d'un pneumatique, tel qu'un pneumatique poids-lourd, un tissu composite utilisable comme nappe d'une telle armature de carcasse, une armature de carcasse comportant ce tissu et un pneumatique incorporant cette armature de carcasse. Un câble metallique selon 1'invention comporte une frette textile, et il est tel que ladite frette est constituée d'un polyester ou d'un polyester-amide aromatique thermotrope. Un tissu composite selon l'invention est tel qu'il comporte une composition de caoutchouc qui est renforcée par lesdits câbles. Un pneumatique selon l'invention a son armature de carcasse qui comporte ledit tissu composite.
Abstract:
An armored optical cable (10) and process of manufacturing. The armored optical cable (10) exhibits minimal inelastic elongation is response to tension at elevated temperatures and is capable of withstanding harsh ambient conditions. The armored optical cable (10) is fabricated in a unitary operation with a central bundle (30) of one handedness surrounded by at least one outer armor layer (32) of opposite handedness substantially torque balanced to the handedness of the central bundle (30).
Abstract:
A wire rope comprising a plurality of strands (4-12) twisted together with each strand (4-12) being individually covered by a respective sheath (16) of rubber or rubber substitute. Each strand (4-12) comprises a plurality of wires (14) twisted together with the direction of twist of at least the outer wires (14) in each strand (4-12) being opposite to the direction of twist of at least the outer wires (14) in the strands (4-12) adjacent to it, the rope having an outer covering sheath (18) of rubber or rubber substitute. In this way, the wires (14) of adjacent strands (4-12) do not cross each other, and stress on them is reduced.
Abstract:
The invention relates to a steel cord (30) comprising cylindrical layers, said cord including: an inner layer (C1) formed by M wires, an intermediate layer (C2) formed by N wires helically wound around the inner layer (C1), and an outer layer (C3) formed by P wires helically wound around the intermediate layer (C2), in which the inter-wire distance D2 of the wires of the intermediate layer (C2) is greater than or equal to 25 µm and the inter-wire distance D3 of the wires of the outer layer (C3) is greater than or equal to 25 µm.
Abstract:
The invention relates to a hybrid rope comprising a core element, a first and a second metallic closed layer surrounding said core element. The core element includes a bundle or construction of synthetic yarns. The first metallic closed layer includes a plurality of first wirelike members helically twisted together with the core element in a first direction. The second metallic closed layer includes a plurality of second wirelike members helically twisted together with said core element and said first metallic closed layer in a second direction. The cross-sectional area of the core element is larger than the total cross-sectional area of the first and second metallic closed layers.
Abstract:
Method of manufacturing a metal cord (C-1, C-2) with two concentric layers (Ci, Ce) of wires (11, 20, 17, 21) of M + N construction, comprising an inner layer or core (Ci) of M wires (11, 20), M varying from 1 to 4, and an outer layer (Ce) of N wires (17, 21), of the type "rubberized in situ", i.e. rubberized from the inside (22), during its actual manufacture, with rubber or a rubber composition, said method comprising at least the following steps: • - a step of sheathing the inner layer (Ci) with said rubber or said rubber composition, by passing through an extrusion head (15); • - a step of assembling the N wires of the outer layer (Ce) around the inner layer (Ci), in order to form the two-layer cord thus rubberized from the inside, said rubber is an unsaturated thermoplastic elastomer extruded in the molten state, preferably a thermoplastic elastomer of styrene type ("TPS") such as for example an SBS or SIS block copolymer.
Abstract:
Helically stranded thermoplastic polymer composite cable (10) includes a single wire (2) defining a center longitudinal axis, a first multiplicity of thermoplastic polymer composite wire (4) helically stranded around the single wire (2), and a second multiplicity of polymer composite wire (6) helically stranded around the first multiplicity of thermoplastic polymer composite wire (4). The helically stranded thermoplastic polymer composite cable (10) may be used as intermediate articles that are later incorporated into final articles, such as electrical power transmission cables, including underwater tethers and underwater umbilicals. Methods of making and using the helically stranded thermoplastic polymer composite cables are also described.