| 摘要 |
<p>The panel (1) has two sets of interlocking elements on its edges to engage with adjacent panels and prevent relative movement. One set (7, 9) is in the form of lugs (7a, 7b) on one edge and matching cavities (9a, 9b) in the opposite edge, fastening together by means of studs and recesses. The other set (15, 17) is in the form of male and female hinge members (15a, 15b, 17a, 17b) on the other two edges of the panel that can be engaged only when two panels are held at an angle to one another and then laid flat to lock them. The panels are made from plastic and have ribbed under surfaces (37).</p> |
