Swimming pool with variable depth - has vertical telescopic screw operated hoisted extended or retracted to change floor setting

摘要

The bottom of the swimming-bath is mechanically raisable and lowerable, so that the depth of water can be varied. One or more hoists (1) are provided, with a vertical hoist axis (12, 13) directly or indirectly engaging the raisable pool floor from below and adjustable for length by rotary movements. There may be two or more of these, evenly distributed. The axis may operate on the telescopic principle, with cylindrical units activated by screwing devices.