| 摘要 |
1. A safety device (3) mountable in an assembly comprising a tyre (2) and a rim (1) having one removable lateral flange (10), the device (3) comprising a rigid ring (4) formed of a plurality of sectors (41) whose radially outer surface defines a radial support for the tread of the tyre when the tyre is deflated, the rigid ring (4) being mounted on and around an annular part (5) of elastic material, which annular part is disposed on the rim (1) in mounted position, and comprising means (43, 402, 401) for connecting the sectors (41) together, characterized by the fact that said means for connecting the sectors together consist of dovetails (401) and corresponding mortises (402), and by the fact that the dovetails and corresponding mortises are developed at most on the lower half of the radial height of the rigid ring (4). |
