| 摘要 |
<p>Electrically operated raisable bed which can be displaced in ascending and descending directions along guide rails provided in a structural frame, by virtue of the rolling- up and unrolling operation of transmission elements moved by an actuating device and provided with safety devices, characterized in that the aforesaid actuation device is installed in the structural frame and the transmission elements, from which the bed frame is suspended, are made from steel bands fixed on drums in order to roll up in layers when the drums rotate. <IMAGE></p> |
