Abstract:
1,247,604. Vehicle tyres. GUSTAV WOLFSEIL-UND DRAHTWERKE. 13 Oct., 1969 [16 Oct., 1968; 11 June, 1969], No. 50257/69. Heading B7C. [Also in Division D1] A strand of polygonal cross-section having filaments constituting an inner lay and an outer lay, is characterized in that the outer lay filaments are arranged in groups of three associated with each inner lay filament, two of the outer lay filaments in each group being thinner than the third, the strand having no filament extending coaxial with the strand axis. In Fig. 2 there are three inner filaments 9, 10, 11 and nine outer filaments. Inner filament 9 is associated with three outer filaments 9a, 9b, 9c and filaments 9a, 9b are thinner than filament 9c. Fig. 1 illustrates an embodiment in which two inner filaments 1, 2 are associated with six outer filaments. Inner filament 1 is associated with the three outer filaments 3, 4, 5 and filaments 3, 4 are thinner than filament 5. Fig. 3 (not shown) illustrates an embodiment in which there are four inner filaments and twelve outer filaments. The Specification also describes cables made from the strands. The strands or cables may form an endless ring and may be embedded in a vehicle tyre. The filaments may be of metal, glass, plastics or any combination of these materials.
Abstract:
A compact steel cord is provided. The cord includes a core-filament I steel wire with a diameter of d0, and four middle-layer M steel wires with a diameter of d1 and eight outer-layer O steel wires with a diameter of d2 that are twisted around the core-filament I steel wire in the same lay direction and the same lay length. Gaps L are reserved between the outer-layer O steel wires, an average width of the gaps L is not smaller than 0.02 mm, and the total size of the gaps L is larger than d0 and smaller than d1. The steel cord of a stable structure can be obtained by controlling the proportion of the sizes of all layers of monofilaments, the rubber coating performance of a tire cord can also be improved, the corrosion resistance, fatigue resistance, impact resistance and adhesion retention of a tire are improved.
Abstract:
Multistrand metal cable of 4×(4+M) construction, which can especially be used for reinforcing tire belts for industrial vehicles, formed from four elementary strands assembled in a helix with a helix pitch P3, each elementary strand consisting of a two-layer cable of 4+M construction comprising an inner layer C1 formed from four wires of diameter D1, assembled in a helix with a pitch P1, and an unsaturated outer layer C2 of M wires, M being greater than or equal to 8 and smaller than or equal to 11, of diameter D2, these being assembled in a helix with a pitch P2 around the inner layer C1, P1 being smaller than P2, the four wires of the inner layer C1 being wound in a helix in the same twist direction as the M wires of the outer layer C2, and wherein each of the diameters D1 and D2 is greater than or equal to 0.10 mm but less than or equal to 0.50 mm.
Abstract:
A steel cord with two or more filaments possibly including a wrapping filament, at least one but not all of the two or more filaments including the possible wrapping filament is coated with a ternary or quaternary alloy coating of copper-M-zinc. The steel cord with lower cost and good adhesion performance is for reinforcing rubber product.
Abstract:
A wire strand (10) comprises a plurality of wires (12, 16, 20). The wires comprise a central king wire (12), a first layer (14) of wires (16) arranged around the king wire, and a second layer (18) of wires (20) arranged around the first layer. The king wire is formed of steel having a carbon content of at least 0.3 wt %. Each wire of the first layer is formed of steel having a carbon content which is less than the carbon content of the king wire. Each wire of the second layer is formed of steel having a carbon content which is greater than, or the same as, the carbon content of the wires of the first layer.
Abstract:
A twisted cable includes a main body which includes a central filament and a plurality of twisted filaments. The twisted filaments are arranged around the central filament and include six first filaments, twelve second filaments, and eighteen third filaments from the central filament outward. The cross-section of each first filament is the same with the one of each second filament. The cross-section of each first filament is larger than the one of the third filament but smaller than the one of the central filament. The twisted filaments are twisted around the central filament. As a result, the twisted cable of the present invention has improved structure strength, appropriate toughness, and smaller amount of longitudinal deformation.
Abstract:
Metal cord (C-1) with two concentric layers (Ci, Ce) of M+N construction, comprising an internal first layer or core (Ci) made up of M wire(s) (10) of diameter d1, M varying from 1 to 4, around which core are wound together in a helix, in an external second layer (Ce), N wires (11) of diameter d2, in which at least some of the gaps in the cord which are situated between the wires of the various contain a filling rubber (13) based on an unsaturated thermoplastic elastomer, particularly a styrene thermoplastic elastomer (TPS) such an SBS or SIS block copolymer for example.Such a thermoplastic elastomer, when used in the molten state, presents no problems of unwanted stickiness if the filling rubber overspills outside the cord after manufacture; its unsaturated and therefore (co)vulcanizable nature makes it extremely compatible with the diene rubber, for example natural rubber, matrices usually used as calendering rubber in the metal fabrics intended for reinforcing the tyres.
Abstract:
Multistrand metal cable of 4×(4+M) construction, which can especially be used for reinforcing tire belts for industrial vehicles, formed from four elementary strands assembled in a helix with a helix pitch P3, each elementary strand consisting of a two-layer cable of 4+M construction comprising an inner layer C1 formed from four wires of diameter D1, assembled in a helix with a pitch P1, and an unsaturated outer layer C2 of M wires, M being greater than or equal to 8 and smaller than or equal to 11, of diameter D2, these being assembled in a helix with a pitch P2 around the inner layer C1, P1 being smaller than P2, the four wires of the inner layer C1 being wound in a helix in the same twist direction as the M wires of the outer layer C2, and wherein each of the diameters D1 and D2 is greater than or equal to 0.10 mm but less than or equal to 0.50 mm.
Abstract:
The twisted cable is produced by entwisting plural surround wires together on a central wire. The surround wires have several different sizes. The surround wires are arranged in a particular arrangement so as to reduce elongation when stretch force is exerted on the twisted cable. In addition, the outer surround wires have smoothened outer surfaces, so that the twisted cable has smooth and satiny outer surface. Friction and abrasion caused by pulling the twisted cable is reduced.