Patent ID: 7836929
Filing Date: 2010-11-23
Classification: B60C,Y10T

Abstract:
1. A tire having a section height, a maximum section width, an upper section above the maximum section width, and a lower section below the maximum section width, the tire comprising: a circumferential tread; a pair of sidewalls; a pair of bead portions, each comprising a bead core, a bead filler having upper walls that converge at an apex at a radially outward position, and a separate bead filler insert, wherein the separate bead filler insert is provided only in the lower section of the tire above the bead filler and the separate bead filler insert is spaced from the bead filler by a gap such that the bead filler insert does not contact the bead filler; at least two carcass plies extending circumferentially about the tire from one bead portion to the other, the carcass plies including inner and outer turn-up portions that extend upwardly towards the tread and terminate at inner and outer turn-up ends, respectively; at least one circumferentially extending belt disposed between the at least two carcass plies and the circumferential tread, the belt having a pair of axial ends; a pair of belt edge inserts, each belt edge insert being provided between an axial end of the at least one circumferentially extending belt and the at least two carcass plies such that the axial ends of the at least one circumferentially extending belt extend outwardly beyond inner ends of the belt edge inserts; and at least two reinforcement plies including first and second reinforcement plies extending circumferentially about the tire, the first and second reinforcement plies provided between the carcass plies and one of the sidewalls of the tire, wherein lower ends of the first and second reinforcement plies extend between the at least two carcass plies and the turn-up end of the outer turn-up portion and terminate in the lower section of the tire and upper ends of the first and second reinforcement plies terminate in a shoulder region of the tire above the inner and outer carcass ply turn-up ends, wherein the upper end of each of the first and second reinforcement plies extends inwardly beyond an outer end of one of the belt edge inserts and fails to overlap either axial end of the belt, and wherein the separate bead filler insert is provided between the reinforcement plies and the at least two carcass plies, an upper end of the separate bead filler insert extends above a lower end of the reinforcement ply, a lower end of the separate bead filler insert extends below an upper end of the bead filler, the gap between the bead filler and the separate bead filler insert consists of a rubber material, and the rubber material in the gap does not contact the bead core.