| 摘要 |
PCT No. PCT/EP97/00620 Sec. 371 Date Aug. 19, 1998 Sec. 102(e) Date Aug. 19, 1998 PCT Filed Feb. 11, 1997 PCT Pub. No. WO97/30856 PCT Pub. Date Aug. 28, 1997A tire having an H/S form ratio of at least 0.50, having a radial carcass reinforcement (1) and crown reinforcement (3) composed of at least two working crown plies (31,33) made of inextensible metal cables, crossed from one ply to the next, forming angles of between 10 DEG and 45 DEG with the circumferential direction, and of an additional ply (32) which is axially continuous and formed of metallic elements oriented substantially parallel to the circumferential direction. Said ply (32) being placed over the radially closest working ply (31) to the carcass reinforcement (1), and the ratio of its rigidity of extension per unit of width to the total of the rigidities of extension of the other plies of the crown reinforcement being between 0.35 and 0.70. |
