Abstract: The invention relates to a covering device for liquid tanks, in particular swimming pools, comprising a buoyant covering element, the covering element comprising a continuous covering layer and a fluid chamber connected to the covering layer, a pumping being provided, which is designed to convey a liquid, in particular water, and/or a gas, in particular air, into the fluid chamber. The invention also relates to an assembly of a covering device according to the invention together with a liquid tank.

Abstract: A training and/or rehabilitation device in which a walking or running treadmill (2) is arranged in a water tank with flowing water (9). To be able to use the device regardless of the design of the water tank, the walking or running treadmill (2) can be used together with a stream generator (3) as a unit in the water tank or in open water.

Abstract: A flow duct is provided in which water is caused to flow by way of a delivery device disposed in a circulation line. In order to be able to adapt the flow inside the duct to the particular requirements, and/or achieve a laminar flow over the entire flow region, a plurality of circulation lines is provided, each having a controllable delivery device, wherein the circulation lines lead into the flow duct separately from each other, and wherein the discharge openings of the circulation lines are distributed over the face wall of the flow duct.

Abstract: The invention relates to a kit for a counter-current swimming pool, wherein water is pumped inwards on a defining wall of a swimming pool (1) along the entire horizontal extension thereof and is discharged on the opposite boundary wall along the entire horizontal extension thereof. In order to enable retrofitting of the kit into existing swimming pools, an insert (2, 3) is formed or incorporated into the swimming pool (1), comprising a cover plate (4, 5) which defines the swimming area below and from which boundary walls (6, 8) emanate. The boundary walls extend in a parallel or substantially parallel manner as far as the bottom of the swimming pool, wherein, in the region between the boundary walls (6, 8), axial propelling means, i.e.

Abstract: A flow duct is provided in which water is caused to flow by way of a delivery device disposed in a circulation line. In order to be able to adapt the flow inside the duct to the particular requirements, and/or achieve a laminar flow over the entire flow region, a plurality of circulation lines is provided, each having a controllable delivery device, wherein the circulation lines lead into the flow duct separately from each other, and wherein the discharge openings of the circulation lines are distributed over the face wall of the flow duct.

Abstract: A swimming pool having a cover is provided, wherein the air located inside the cover can be conditioned. In order to achieve conditions corresponding to high altitude training, the air space inside the cover is connected to an air generator, by way of which the composition of the air can be adjusted and/or changed.

Abstract: The invention relates to a training and/or rehabilitation device in which a walking or running treadmill 2 is arranged in a water tank with flowing water 9. To be able to use said device regardless of the design of the water tank, the walking or running treadmill 2 can be used together with a stream generator 3 as a unit in the water tank or in open water.

Abstract: The invention relates to a kit for a counter-current swimming pool, wherein water is pumped inwards on a defining wall of a swimming pool (1) along the entire horizontal extension thereof and is discharged on the opposite boundary wall along the entire horizontal extension thereof. In order to enable retrofitting of the kit into existing swimming pools, an insert (2, 3) is formed or incorporated into the swimming pool (1), comprising a cover plate (4, 5) which defines the swimming area below and from which boundary walls (6, 8) emanate. The boundary walls extend in a parallel or substantially parallel manner as far as the bottom of the swimming pool, wherein, in the region between the boundary walls (6, 8), axial propelling means, i.e.