Patent ID: 6935394
Filing Date: 2005-08-30
Classification: B60C,Y10T

Abstract:
1. A tire for vehicles carrying heavy loads, comprising a crown zone extended axially and radially by sidewalls, these in turn being extended by beads designed to come in contact with a mounting rim of the tire, the said rim comprising a part that forms a rim seat comprising radially on the outside a rim hook with a substantially circular cross-section, the sidewalls of the tire being reinforced by a radial carcass reinforcement, the said radial carcass reinforcement extending into the beads of the tire and being anchored therein to a circumferential bead reinforcement, the said tire comprising besides, in at least one bead, an additional reinforcement composed of a plurality of discontinuous reinforcing elements of length L 0 , these discontinuous reinforcing elements being orientated essentially circumferentially along a plurality of circles C, C 1 , C 2 concentric on the rotation axis of the tire mounted on its rim, each circle being defined by a mean radius (R, R 1 , R 2 ) measured relative to the said rotation axis, each discontinuous reinforcing element of length L 0 located on a circle C of radius R being mechanically coupled over coupling lengths L 11 and L 12 respectively with two discontinuous reinforcing elements located on a circle C 1 of radius R 1 smaller than the radius R, the said circle being immediately adjacent to the circle C, wherein the coupling lengths L 11 and L 12 , L 11 being taken as larger than or equal to L 12 , satisfy the following relationship: