| 摘要 |
The invention relates to improving the endurance of the beads of a radial tire for a heavy civil engineering vehicle, by decreasing the spread rate of the cracks initiated at the end of the carcass reinforcement frame and spreading through the polymeric covering, edging and filling materials. According to the invention, a transition element (25) consisting of a polymeric transition material is at least partially in contact, via the axially outer surface thereof, with the polymeric edging material (22) and, on the axially inner surface thereof, with a polymeric filling material (23b); the radially outer (E |
