| 摘要 |
<p>A vertically movable floor apparatus for swimming pool and the like in which the movable floor is readily set to a required height level and provided with a stably supporting device for preventing shaking of the movable floor. The apparatus comprises a movable floor having means for giving it buoyancy under water by sealing air therein, a lifting device for vertically moving the movable floor, stably supporting device for supporting the movable floor in a required height level. The lifting device has a chain to which suitable tension is given by a tension wheel. The stably supporting device includes a locking device provided for the movable floor and a state detection device for detecting which of a lock state and an unlock state of the locking device. <IMAGE></p> |
