| 摘要 |
<p>A coupling spigot for connecting two scaffold legs one atop the other is designed to use a twist lock for securing the upper scaffold leg to the coupling spigot. A locking collar is fixed to a stop collar of the spigot. The locking collar includes receiving slots for receiving locking projections provided adjacent a bottom edge of the scaffold leg. Locking slots are connected to the receiving slots whereby an upper scaffold leg may be inserted on a coupling spigot of a lower scaffold leg and retained thereon by a twist lock.</p> |
