| 摘要 |
A locking device for retaining two screw threaded members (1, 11) end to end. One member carries a coil spring (5) and a sleeve (6) for opening the coils of the spring, which normally clamp against a cylindrical surface (12) of the second member when joined. Unscrewing of the two members is achieved by rotating the sleeve (6) to release the coils of the spring from the surface (12). |
