| 摘要 |
<p>The trolley allows one person to grip, transport and lower heavy items without physical effort. It consists of a porter's trolley, the arms of which can be telescopic. There are also telescopic grips, pivoted on the same axis as the wheels. The two axes are not coincident and can be moved apart, closing the grips towards a stop. There is also a base plate to seat the item being handled. The handle also houses the release control for the article.</p> |
