Abstract:
A steel cord (10) has a diameter D and includes a core strand (12) and up to nine peripheral strands (14) surrounding the core strand. The core strand (12) has a diameter D1 and the peripheral strands (14) have a diameter D2. The ratio core strand diameter to peripheral strand diameter D1/D2 is greater than a predetermined value in order to enable rubber penetration. Each strand has a center of one or more center filaments (16, 22) and two or more layers of filaments (18, 20, 24, 26) surrounding the center. The twist angle of a radially outer layer is smaller than the twist angle of a radially inner layer of the same strand. A first free space (28) ranging from 0.0015.times.D to 0.0075.times.D is provided in at least the core strand between each pair of filaments (18) of the radially most inner layer.
Abstract:
A metal cord for reinforcing elastomeric articles, such as earth mover tires, comprises a plurality of metal wire-filament strands, including a center strand and multiple peripheral strands concentrically surrounding the center strand. Each of the center and peripheral strands includes multiple individual wire filaments of similar diameter having identical strand lay direction and length. Each strand has a hexagonally close-packed longitudinally uniform polygonal outline in which filaments are in concentric layers, with each individual filament being tangential to all adjacently surrounding filaments. The peripheral strands are tangential to the center strand and have a predetermined cord lay length and direction either the same as (Lang's Lay) or opposite to that of the center strand.
Abstract:
Câblé textile à haut module (50) à au moins triple torsion (Tl, T2, T3), comportant au moins N brins (20a, 20b, 20c, 20d), N étant supérieur à 1, retordus ensemble selon une torsion finale T3 et une direction finale D2, chaque brin étant constitué de M pré-brins (10a, 10b, 10c), M étant supérieur à 1, eux-mêmes tordus ensemble selon une torsion intermédiaire T2 (T2a, T2b, T2c, T2d) et une direction intermédiaire Dl opposée à D2, chaque pré-brin consistant lui-même en un filé (5) qui a été tordu préalablement sur lui-même selon une torsion initiale Tl (Tla, Tlb, Tic) et la direction Dl, dans lequel au moins la moitié des N fois M filés présente un module initial en extension noté Mi qui est supérieur à 2000 cN/tex. Ce câblé textile est avantageusement utilisable comme renfort dans les pneumatiques pour véhicules, en particulier dans la ceinture ou dans l'armature de carcasse de ces pneumatiques.
Abstract:
A hybrid rope (40) or a hybrid strand (50) comprising a core element (42, 52), a first (44, 54) and a second (46, 56) metallic closed layer surrounding said core element (42, 52). The core element (42, 52) includes a bundle of synthetic yarns. The first metallic closed layer (44, 54) includes a plurality of first strands of wires helically twisted together with the core element (42, 52) in a first direction. The second metallic closed layer (46, 56) includes a plurality of second wires or strands helically twisted together with said core element (42, 52) and said first metallic closed layer (44, 54) in a second direction. The cross-sectional area of the core element (42, 52) is larger than the total cross-sectional area of the first (44, 54) and second (46, 56) metallic closed layers. A corresponding method of producing such a hybrid rope or hybrid strand is also disclosed.
Abstract:
A titanium alloy cable comprises a plurality of individual wire filaments (20). Groups of wire filaments are twisted together in a first helical direction around a central wire filament to make a strand (10). A plurality of strands are twisted together in a second helical direction around a core strand to make a strong, flexible cable. The first helical direction has the opposite sense to that of the second helical direction. In one embodiment, the cable has one hundred and thirty three wire filaments, each of diameter 0.0025 inches (64(my)m), arranged in nineteen equivalent strands and the titamium alloy is Ti-6 wt % A1-4 wt % V.