Patent ID: 6109017
Filing Date: 2000-08-29
Classification: B60C,D07B

Abstract:
A steel cord comprising:two core wires each preformed to have a preforming percentage Kc before a strand is formed, said two core wires having substantially the same diameter; andfive outer wires each having a diameter larger than that of each core wire and integrally twisted on said core wires,said five outer wires each being preformed to have a preforming percentage Ks before said strand is formed, said five outer wires also having substantially the same diameter, said strand being formed by said five outer wires and said two core wires, and having an oblong cross section,wherein a ratio of a diameter of each of said outer wires to a diameter of each of said core wires falls within a range of 1.45 to 2.25, and the preforming percentage Kc of said two core wires is greater than the preforming percentage Ks of said five outer wires.