Patent ID: 6745806
Filing Date: 2004-06-08
Classification: B60C,D07B,Y10S,Y10T

Abstract:
A radial tire for a heavy load comprising:a carcass extending to a bead core of a bead portion from a tread portion via a side wall portion; and a belt layer arranged inside the tread portion and outside the carcass, wherein a carcass cord of said carcass is constituted by a metal cord having a core comprising totally 6 to 12 filaments sectioned into 2 to 4 filament bundles, and a sheath comprising 8 to 15 filaments arranged around the core, wherein each of said filament bundles includes a waved filament modeled in a two-dimensional wave shape having crests and troughs repeatedly and a non-waved filament, in a state before being bundled, and wherein a torsion is applied to each of the filament bundles individually so as to make a strand, and the strands are twisted together so as to make said core after or at the same time torsion is applied.