| 摘要 |
The metal band (1) has side projections (2) with radial grooves (3) to allow flexing to grip the pipe. The hook elements (6,11) have acute-angle sections (8,16) engaging the hook end (13). Sliding motion of the projection (14) on the lower surface (7) of the first hook (6) causes rotation of the second hook (11) and engagement of the acute angle sections. |
