| 摘要 |
Two opposed coaxial discoidal elements ( 35, 37 ) are diametrically dilatable and are able to move independently of each other axially and pass axially into the tire (P) when the tire is positioned in the mold, in such a way as to dilate each of said discoidal elements ( 35, 37 ), for engaging a corresponding annular bead (P 1, P 2 ) of the tire and positioning it exactly against the edge of the respective pan ( 13, 15 ). |
