Abstract: This invention provides a composite wire rope comprising a plurality of outer strands laid helically about a helically stranded core. The core is comprised of high strength synthetics, such as polyamide or polyolefin materials to form a unitized lay central member. The method for forming the rope comprises the steps of twisting high strength synthetic monofilament yarns into core elements to provide a high degree of stability and overall tensile strength. Each such element is helically laid in a single operation to form the finished core. Lubricant may be applied and subsequently a protective jacket of steel, natural or synthetic material may be provided to encapsulate the core and lubricant. The rope structure is completed by helically laying a plurality of outer strands about the core.

Abstract: A steel cord comprises a central bundle of three twisted steel filaments (1) with a diameter d.sub.1 and nine steel filaments twisted around said central bundle with the same twist pitch and twist direction as the central bundle. Three filaments (2) of said nine steel filaments have a diameter d.sub.2 and contact two adjacent steel filaments of the central bundle. Six steel filaments (3) of said nine steel filaments have a diameter d.sub.3 and contact both one steel filament of the central bundle and one steel filament of the three filaments with diameter d.sub.2. The ratio d.sub.2 /d.sub.1 is greater than 1.05 and smaller than 1.16. The raio d.sub.3 /d.sub.1 is greater than-0.205=0.814.times.d.sub.2 /d.sub.1 and smaller than-0.105+0.814=d.sub.2 /d.sub.1.

Abstract: A reinforcement assembly comprises from one to three layers of threads, one of which is a central layer having one or more shaped threads, i.e., threads having a center of gravity and a contour in an intersecting plane perpendicular to the longitudinal direction of the thread, the distance from any point on the contour to the center of gravity depending on the position of the point on the contour. The twist pitch of each shaped thread is different from the winding pitch of the shaped thread in the layer in which it is located and if the element comprises three layers, the winding pitch of the outer layer is different from the winding pitch of the subjacent layer. Reinforced articles include such assemblies impregnated with a material, in particular pneumatic tires.

Abstract: A novel construction of a trailing wire antenna radiating element using conductive material in the central core wound in a direction opposite to the conductive material on the outer layer in the skin effect area to reduce AC impedance. To compensate for the strength lost with the conductive material in the core area, high tensile strength and non-magnetic material such as stainless steel or beryllium copper is used in the outer layer. For a given diameter wire cable, the present device has much lower impedance and much higher strength while remaining more flexible.

Abstract: A reinforcing cord made of several steel wires includes a metal wrapping wire coiled around steel wires. The hardness of the wrapping wire is substantially less than the hardness of the steel wires. Preferably the wrapping wire is a flat wire whose longer side engages the cord.

Abstract: Small diameter wire rope having a relatively ductile and preferably solid core is found to be strong yet better resists shearing forces than similar rope having a high strength core strand.

Abstract: A reinforcement for rubber is disclosed, which comprises a cord made from an amorphous iron-base alloy filament previously subjected to a wire drawing at a reduction of area of not less than 10%.

Abstract: A pneumatic radial tire is disclosed, which comprises steel cords having a two or three layer construction represented by a designation of l+m or l+m+n as a tire reinforcement, wherein two layers at a center side of a transverse section in the steel cord have the same twisting direction but different twisting pitches. In this steel cord, m filaments constituting an outer layer are arranged so as to enter into an inside of a circumscribed circle enveloping l filaments of an inner layer at a non-contact region above a predetermined value and have a form ratio of 90-110%.

Abstract: A steel cord composed of four material wires of the same diameter twisted together, of which two material wires are stuck together and intertwisted at the center and each of the other two material wires is arranged on both sides of the former two material wires with a certain space left between the former and the latter. The latter two material wires are twisted about the former two material wires in the same twist direction and at the same pitch as the former two material wires into a steel cord. The steel cord thus composed facilitates infiltration of a rubber compound into the central part of the steel cord, ensures perfect adhesion between the rubber compound and the steel cord, checks elongation under a very low load, stabilizes twist construction in the lengthwise direction and improves an anti-fatigue characteristic.

Abstract: A wire rope which includes a filler material disposed in the interstices between a core rope and respective outer strands and/or in the gaps between individual outer strands wherein the filler element is placed independently in the respective interstices and gaps or an interstice and an outwardly contiguous strand gap as an independent unit. A reinforcing core is anchored in the filler element at least in the interstices between the core rope and the respective outer strands.

Abstract: A steel cord having a basic construction constituted by a group of at least two wires of the same diameter twisted together and a single wire or a bundle of a plurality of parallel wires are intertwisted. This steel cord provides better adhesion between a rubber compound and the steel cord because of better infiltration of the rubber compound into a central cavity formed by adjoining steel cords and also better elastic force in the lengthwise direction of the cord.

Abstract: Described is a novel marker for wire ropes, in the form of a polymer, e.g., polyester film carrying a highly abrasion-resistant impression. This polyester film is wound around a support element in spirally overlapping manner and is worked into a gap between the bundles of strands, at the same twisting angle as the latter.

Abstract: The present invention provides a wire rope comprising an inner layer of at least four separate wire strands and an outer layer of at least eight separate wire strands, parallel laid. The strands themselves are usually of parallel lay and are usually lubricated. A thermoplastic or an elastomer usually surrounds the inner layer strands and extends between the inner layer strands and the outer layer strands and between the outer layer strands.

Abstract: In order to obtain a bead ring for tires which is both lighter and stronger than the known bead rings, the bead ring is formed of an annular core, for example of steel, surrounded by at least one layer formed of at least one strand of continuous nonmetallic filaments which are practically parallel to each other and free of impregnation, which strand is wound around the core in the same direction to a layer thickness at least equal to twice the average diameter of a filament and with a winding pitch p less than 2.sqroot.ac (in which a is the radius of a circle equivalent to the perimeter of the cross section of the core and c is the average circumference of the core) and a twist in the same direction as the winding and equal to one turn per pitch.

Abstract: A rotation resistant rope comprising a central multi-wire strand of Seale's construction, an intermediate layer comprising a plurality of multi-wire strands closed in one operation around the central strand, and a covering layer of 10 multi-wire strands closed around the intermediate layer. Each intermediate and covering layer of strands has a direction of lay opposite to that of the other layer of strands. The outside strands and core are always laid opposite each other, but the wires within each of these strands may be Lang lay, although Regular lay is preferred, particularly for the outside strands. The 10 outside strands may comprise from 7 to 26 wires and all of the strands are identical. However, in a preferred construction each of the outside strands consists of 19 wires.

Abstract: A metal cord having a core comprising one or more filaments for the reinforcement of rubber articles comprising a plurality of bundles of grouped filaments wherein the direction of lay of the filaments in the bundles is the same as the direction of lay of the bundles in the cord, each of the filaments having been subjected to plastic torsional deformation, and the average length of lay of each bundle in the cord being substantially equal to the average length of lay of each filament in the bundles, and wherein at any cross-section of the cord the filament or filaments which comprise the core of the cord differ along the length of the cord and belong to the same or different bundles.

Abstract: A steel wire cord which comprises an assembly of strands each of which comprises a plurality of filaments of steel, said filaments having been drawn to give a reduction in their cross-sectional area of less than 96%, the strand helix angle being not less than 40.degree. and the filament helix angle being not less than 20.degree..