| 摘要 |
<p>This pivoting hook system is designed to give the operator or the spotter on the building control over the swing of material being lifted. It provides a safer distance from under the load, as workers are in potential danger at times when handling tether ropes attached to beams, trusses, etc. as they guide them into place. This device provides a safer alternative to tying a rope to loads for positioning.</p> |
