Abstract:
A rope structure comprising a plurality of formed composite strands. Each of the formed composite strands comprises fiber material and matrix material. The fiber material within the matrix material is twisted. The shapes of the plurality of formed composite strands are predetermined to facilitate combination of the plurality of composite strands into the rope structure.
Abstract:
A rubber-steel cord composite is provided having nonlinear physical properties even in a rubber characterized by incompressive properties after vulcanization, and hence the rubber-steel cord composite can show low rigidity and flexible properties in a low-strain region and, on the other hand, can show high rigidity in a high-strain region. The rubber-steel cord composite is provided by bundling steel linear objects 1 subjected to spiral shape forming at substantially identical pitches in an approximately identical phase without twisting, the steel cord being embedded in rubber.
Abstract:
Method for making a cable, particularly a so called armored cable, comprising following steps: A- providing a rope (3) constituting the core of said armored cable B- providing at least an armor winding band-like member (1)
wherein said armor winding band-like member is a so called preformed band (2) i.e. bent substantially about the longitudinal axis of the band and/or an axis parallel to the axis of longitudinal development of the band, and comprising in addition the step of D- covering said rope by winding at least one, preferably two, preformed bands (2) such that the concave region of the bend of said preformed band is faced towards the rope.
Abstract:
Elément filaire de renforcement du béton armé pour la réalisation d'ouvrages en continu constitué par un toron comportant un noyau central (1) recouvert par au moins une couche externe formée par au moins six fils crantés en acier (2) enroulés en hélice autour de lui avec un pas compris entre 125 et 400 mm environ, ledit toron étant réalisé en acier moyen carbone assurant une résistance à la rupture comprise entre 800 et 1 400 N/mm 2 environ ainsi qu'une rectitude telle que sa flèche maximale soit inférieure à 25 mm environ pour 1 m de longueur, une fois le toron bobiné déployé. Utilisable dans tout ouvrage en béton constructible en continu ou susceptible de l'être, telles que routes, tarmac d'aéroports, voies de halage de bateaux, etc..., l'élément de renforcement selon l'invention procure une réduction du travail d'assemblage du ferraillage en même temps qu'une diminution de la quantité de matière métallique de renforcement à utiliser.
Abstract:
A pneumatic tyre comprises a carcass (6) extending between bead portions (4) through a tread portion (7) and sidewall portions (3), and a belt (7) disposed radially outside of the carcass in the tread portion (2), wherein the belt (7) comprises at least one monofilament cord ply (11) made of parallel monofilament cords (10), each monofilament cord is a single metallic filament (F) having a circular cross sectional shape, a diameter of from 0.35 to 0.70 mm, a tensile strength of from 2800 to 3700 Newton/sq.mm, and a bending rigidity of from 35 to 260 gf cm, and the cord count of the monofilament cords in the monofilament cord ply is in a range of from 30 to 50 /5 cm.
Abstract:
A steel structure adapted for the reinforcement of elastomers, said steel reinforcement comprising one or more steel filaments (10). At least one of said steel filaments (10) is provided with a first crimp and a second crimp. The first crimp lies in a plane that is substantially different from the plane of the second crimp. Applying both crimps can be done in an efficient way by means of two pairs (12, 14) of toothed wheels which are not externally driven. By means of these crimps it is possible to obtain steel structures with an increased penetration of rubber or with an increased elongation at break.
Abstract:
The proposal is for a wire filament for reinforcing rubber or plastic items, especially pneumatic tyres, which is spiral in shape and exhibits no residual elastic torsional stresses. A wire filament (8) of the invention is produced by twisting drawn straight wire filaments (2) in the plastic deformation region followed by reversal, two wire filaments being put together and secured at the latest before reversal. Advantageously, at least two wire filaments (2) are brought together by means of a perforated plate (30), twisted around each other in a false twister (20) and plastically deformed and then reversed in a further false twister (40).
Abstract:
A steel cord (10) adapted for the reinforcement of elastomeric products comprises a core and a layer arranged around the core. The core comprises one to four core filaments (12) and the layer comprises three to ten layer filaments (14). At least one of the core filaments (12) have a first wave form and at least one of the layer filaments (14) have a second wave form such that the first wave form is substantially different from said second wave form. This allows to control the size of the micro-gaps and to guarantee rubber penetration.
Abstract:
A steel cord for reinforcing a rubber product has a multilayer structure consisting of two or more layers including a core, or a structure consisting of seven or more strands twisted in the same direction at the same pitch. In the steel cord, at least one of three strands that are successively adjacent to one another or that are in mutual contact is formed of two filaments that are paired substantially parallel to each other. The direction of pairing the two filaments of each strand is substantially the same over the entire length of the cord. Each of the remaining strands is formed of a single filament. The steel cord is utilized in elastomeric products such as pneumatic radial tires as a reinforcing material so as to increase their durability.