Pneumatically operated swimming-pool partitioning folding wall - with cavities flooded or air-filled for folding downwards or upwards

摘要

The power-operated folding wall is for use in swimming pools, being utilised as a pool divider, and as a below-surface guard for adjustable elevating bottom sections. The folding, trap-opening, wall is made with hollow spaces at suitable points, and these can be either floorded with water or blown out with air. By this means flooding can bring about folding of the wall onto the pool bottom, while filling with air causes it to fold upwards into the vertical position. The air can emerge from nozzles in the bottom of the pool, and rise freely in the water to be conducted through correspondingly sited openings into the cavities in the wall. Valves can be opening for re-flooding.