| 摘要 |
<p>Riser plate ladder is characterized in that it consists of the protective plate (50) affixed to the bearing plate (20), with, on the back of the studs (22) attached to the snap (21), through which the inserted rod axis (40), the has been inserted into the holes (31) housings (30), at the end of rod axis (40) is a hole (41) to slide out the pin. Riser plate ladder is characterized in that the protective plate (50) is made of hard polystyrene, bearing plate (20) and housings (30) are made of aluminum or plastic and the rod axis (40) is manufactured of steel.</p> |
