Patent ID: 6863103

Claim:
A steel cord for the reinforcement of a rubber article comprising: a core strand formed by twisting a plurality of filaments, and a plurality of sheath strands arranged around the core strand and each formed by twisting a plurality of filaments, wherein each of the sheath strands is formed by twisting outer and inner sheath layers made of plural filaments around a core made of at least one filament, all of the filaments constituting each sheath layer of each sheath strand have the same diameter, a diameter of the filaments of the outer sheath layer of each sheath strand is larger than a diameter of the filaments of the inner sheath layer located inside the outer sheath layer, and a diameter of the filaments of the inner sheath layer of each sheath strand is larger than a diameter of the at least one filament of the core located inside the inner sheath layer.