A pool cover for temperature regulation of pool water having an upper sheet of flexible material and a lower sheet of flexible material. The sheets are joined together at their side edges and along a plurality of longitudinally seams to form a panel having a plurality of longitudinal seams to provide a plurality of flow channels. A pump attached to an input tube draws in water from the pool, and via an input manifold forces the pumped water through the flow channels in the panel, and out the ends of the flow channels back into the pool. Pool water pumped through the flow channels picks up heat from incident solar radiation and the ambient air temperature, or gives off heat to the ambient environment, depending on the temperature of the air, the amount of incident radiation, and the temperature control settings provided by the user.

A swimming pool cover assembly including a frame, at least one cover, and an adjustment means. The frame including at least one inflatable portion and an interconnected three-dimensional (3D) lattice of inflatable straight tubes. The at least one cover is supported by the frame to define an exercise chamber including at least part of a swimming pool. The adjustment means reduces an oxygen content of air in the exercise chamber compared with air external the exercise chamber. The exercise chamber has elongate sidewalls.

A device for covering a rectangular surface is provided that includes a cover (10) rotatably mounted on a drum (2), the device being capable of winding and unwinding the cover between an uncovered position and a covering position, rails (6) attached along the longitudinal sides of the surface, each of the rails includes an opening (6o) allowing the longitudinal edges (10L) of the cover to be locked in an air-tight manner, a blower system (51) suitable for blowing air (51a) into a volume under the cover and a flap (41) having an end (41s) which is sealed over a whole length of the second transverse side of the surface, a free end (41L) opposing the sealed end, such that the free end of the flap is in contact with the surface, the flap forming an air-tight seal between the cover and the surface along the second transverse side thereof.

A protective device for use with a cover for a swimming pool; said protective device comprising: a pad having an upper surface, a lower surface, an interior peripheral edge and an exterior peripheral edge; wherein said paid has a width extending between the interior and exterior peripheral edges; and a thickness extending between the upper and lower surfaces; and wherein the pad is adapted to be positioned between a coping adjacent an edge of a pool and a bottom surface of the cover; and a plurality of air spaces defined in the pad and which enable air or water to flow through the pad. The pad grips the coping and remains in place without additional securement.

A protective device for use with a cover for a swimming pool; said protective device comprising: a pad having an upper surface, a lower surface, an interior peripheral edge and an exterior peripheral edge; wherein said paid has a width extending between the interior and exterior peripheral edges; and a thickness extending between the upper and lower surfaces; and wherein the pad is adapted to be positioned between a coping adjacent an edge of a pool and a bottom surface of the cover; and a plurality of air spaces defined in the pad and which enable air or water to flow through the pad. The pad grips the coping and remains in place without additional securement.

A flow-through pool cover that efficiently drains built up water from the top of the pool cover while simultaneously preventing leaves and twigs from entering the pool and or clogging up the draining device. The flow-through pool cover includes a pool cover, a plurality of drain-receiving holes, and a plurality of drains. The drain-receiving holes traverse through the pool cover and are distributed about the pool cover. Each of the drains includes a base plate, a plurality of drain holes, a tubular body, and a fastening mechanism. The drain holes are distributed about the base plate and traverse through the base plate to create a mesh. The base plate and the tubular body are concentrically positioned with a corresponding drain-receiving hole. The base plate is attached to the tubular body by the fastening mechanism through the pool cover.

A flow-through pool cover that efficiently drains built up water from the top of the pool cover while simultaneously preventing leaves and twigs from entering the pool and or clogging up the draining device. The flow-through pool cover includes a pool cover, a plurality of drain-receiving holes, and a plurality of drains. The drain-receiving holes traverse through the pool cover and are distributed about the pool cover. Each of the drains includes a base plate, a plurality of drain holes, a tubular body, and a fastening mechanism. The drain holes are distributed about the base plate and traverse through the base plate to create a mesh. The base plate and the tubular body are concentrically positioned with a corresponding drain-receiving hole. The base plate is attached to the tubular body by the fastening mechanism through the pool cover.

A spa cover constructed of layers of pliable insulation encapsulated within a weatherproof vinyl reinforced fabric or a rubber membrane which is attached to rigid square support tubes that run parallel to the short end of the spa. The encapsulated insulation is fastened to the bottom of the square support tubes with corrosion-free nylon anchors which allows the soft insulation assembly to span over the water and rest directly on the spa bartop surface sealing the heat in and keeping debris out. An arched fiberglass rod structure supports a weatherproof rainfly which is permanently affixed to the flat cover assembly to shed rain and debris. The entire assembly is held in place at each end with adjustable straps which stretch the cover from end to end keeping the rainfly taut. Removing the cover to access the spa involves undoing the straps on one end and rolling the cover assembly towards the other end until the desired amount of spa exposure is reached. Covering the spa after use is just the opposite procedure.

A pool cover includes a flexible, water impervious sheet of material having a centrally located float disposed on an upper surface of the material. In an embodiment the float member comprises a closed cell polymeric foam member. In an embodiment the polymeric foam float member is disposed within a pocket formed by a cover sheet attached to the water impervious sheet of the pool cover.

A swimming pool cover with lenses is disclosed. The swimming pool cover uses lenses to focus ambient solar energy into the water of a swimming pool. In one embodiment, a plurality of rectangular lenses is connected at their edges by a minimal amount of connecting or gusset material, in order to create an impermeable sheet, while maximizing the amount of incident solar energy absorbed by the swimming pool water. The swimming pool cover also protects detritus from falling into the swimming pool, while at the same time, reduces the amount of heat loss through evaporation. In another embodiment, the gusset material connects a plurality of lenses, varying in both size and shape.