Patent ID: 6530408
Filing Date: 2003-03-11
Classification: B60C,Y10T

Abstract:
A front tire for two-wheeled vehicles, comprising:a carcass of toric form having a high transverse curvature and provided with a central crown and two sidewalls terminating in a pair of beads for anchoring to a corresponding mounting rim; a tread band located on the crown; and a circumferentially-inextensible belt structure disposed between the carcass and the tread band; wherein the belt structure, at a radially-external position, comprises a layer of cord coils substantially disposed at a zero angle to an equatorial plane of the tire in axial side-by-side relationship and extended from one axial extremity of the belt structure to an opposite axial extremity of the belt structure, wherein the belt structure has at most one layer of the cord coils substantially disposed at the zero angle to the equatorial plane and at least one radially-internal layer provided with reinforcing elements oriented in a crossed direction relative to the equatorial plane, wherein a winding density of the cord coils in the layer grows from the equatorial plane to the axial extremities of the belt structure, wherein the winding density of the cord coils, in a right section of unitary width located on either side of the equatorial plane, is greater than or equal to 4 cords/cm and less than or equal to 8 cords/cm, and wherein a winding density of the reinforcing elements crossing the right section of unitary width is less than or equal to 9 cords/cm.