| 摘要 |
<p>The equipment is comprised of a frame (1) to be lowered in the basin, with means provided on two lengthwise or crosswise edges thereof for securing the one end of belts (9) said sunk mattress (8) can be supported with and the other end of which can be removably locked on the other lengthwise or crosswise frame edge, while means are provided for remotely unlocking said belts (9), in such a way that when said belts (9) are unlocked at one end, said frame (1) may be raised and the belts (9) which are still secured with the other end thereof to the frame (1), can be pulled away from underneath the sunk mattress (8).</p> |
