Patent ID: 6321810
Filing Date: 2001-11-27
Classification: B60C,D07B,Y10S

Abstract:
A pneumatic tire comprising:a carcass;a tread,belt layers between the carcass and the tread;at least an outermost belt layer of the belt layers being reinforced by a plurality of steel cords each including a plurility of constituent wires and having a single-strand structure;each of said steel cords having an elongation at break of greater than 5.5%; andat least one wire of the constituent wires of each of the steel cords differing in shaping rate from remaining wires of said constituent wires wherein the shaping rate is a ratio of a diameter of a circumcircle defined by a hypothetical cord formed of a plurality of wires, with the plurality of wires being shaped, to a diameter of a circumcircle defined by the hypothetical cord with the plurality of wires not being shaped and each of the plurality of wires contacting neighboring ones of the plurality of wires.