| 摘要 |
<p>A re-usable device consisting preferably of two components: a carriage plate a; and a roller wheel c that clip together and are used by inserting the carriage plate through a suitably sized slot in any domestic sized carton or carrier bag, such as a shopping bag, and thus converting the carton or bag into a wheeled trolley. The device may be made of recyclable materials, such as plastics or wood, and two or more of them may be attached to the carton or bag to be transported (figures 5, 11).</p> |
