Abstract: A pool apparatus configured to carry liquids has a side wall and a bottom surface. The side wall has a plurality of structure drawstrings, an outer side wall, and an inner side wall. Two sides of the structure drawstrings draw respectively the outer side wall and the inner side wall, so as to maintain a predetermined shape of the pool apparatus. The structure drawstrings include a main drawstring portions and at least two branch drawstring portions. The main drawstring portions have a first main string side configured to connect a first branch drawstring side of the at least two branch drawstrings. A second branch string side of the at least two branch drawstrings connects respectively to different positions of the outer side wall and the inner side wall.

Abstract: A pool apparatus has a surrounding side frame, a tarpaulin and a top portion frame. The surrounding side frame provides a closed geometrical shape defined on the ground after the tarpaulin is surrounded with respect to the ground. The tarpaulin may be constituted by various kinds of waterproof materials. The tarpaulin has a bottom portion, a side portion and a top portion. The shape of the bottom of the tarpaulin corresponds to the closed geometrical shape. The side portion of the tarpaulin connects to the bottom portion and surrounding the surrounding side frame. The top portion of the tarpaulin connects to the side portion of the tarpaulin. The thickness of top portion of the tarpaulin is thicker than the thickness of the other portion s of the tarpaulin. The top portion frame clips the top portion to fix the tarpaulin.

Abstract: Disclosed is an swimming training apparatus, comprising a drive mechanism driven with electricity and a pumping execution mechanism, said drive mechanism and said pumping execution mechanism disposed separately and spaced apart, and connected by a connection pipeline or a transmission mechanism. The separation of the drive mechanism and the pumping execution mechanism ensures the separation of water and power in the swimming training apparatus and thus ensures the safe use of the swimming training apparatus.

Abstract: Disclosed is a water flow control device for swimming training that includes a swimming training device and a main water inlet pipe and a main water outlet pipe. The swimming training device includes at least a swimming pump. The main water inlet pipe and the main water outlet pipe are connected with the swimming pump. The water inlet of the main water inlet pipe is communicated with a swimming pool and a water outlet of the main water outlet pipe is connected with a jet nozzle. A filter device includes at least a filter pump, a filter sterilization device. A filter water inlet pipe and a filter water outlet pipe are connected with the filter pump. The filter water inlet pipe is communicated with the swimming pool through the filter sterilization device and the filter water outlet pipe communicated with the main water inlet pipe.

Abstract: The present disclosure provides a children's entertainment device with a water slide, including: a water slide provided with a first chamber and a first valve; and a first water spray pipe connected with the water slide, the first water spray pipe being provided with a plurality of first water spray holes. Accordingly, the water slide, which may be filled with water, applied by the children's entertainment device with a water slide can reduce an impact force imposed to the ground by the user, so that the user can be well protected. The water-filled water slide can avoid direct contact between the user and the ground, so that the user can be protected from being cut by hard objects, such as stones, tree branches, so as to avoid accidental injuries. Further, a combination of water-filled water slide and a pool can provide more entertainments in comparison with existing water slides.

Abstract: A pool apparatus includes a pool body, a water inlet, a water outlet, and an outlet valve. The water inlet is used for carrying water into the pool body. The water outlet is used for draining water out of the pool body. The outlet valve covers the water outlet. The outlet valve has a drainage surface for draining water out of the pool body from the drainage surface with a drainage direction. The outlet valve has a protrusion block protruding with a distance opposite to the drainage direction from the drainage surface to decrease the risk that the user may be sucked on the outlet valve.

Abstract: A tail fin assembly for an inflatable product is provided. The tail fin assembly includes a pedestal coupled to a surface of the inflatable product, and a sliding groove positioned on the pedestal, where the sliding groove includes a pair of protruding locking members formed in one end of the sliding groove. The tail fin also includes a fin having a fin body and a fin base, where the fin body is detachably coupled to the pedestal at the fin base which slidably engages the sliding groove. A retainer is coupled to the fin body near the fin base for locking with the protruding locking members to secure the fin to the pedestal.

Abstract: A PTC heater having a heat conductor, a first end cover, a second end cover, and a PTC heating element. The heat conductor includes a duct for accommodating a PTC heating element, a first liquid passage channel, and a second liquid passage channel. The first end cover is coupled to one end of the heat conductor and includes a first and a second compartment, a water inlet, and a water outlet. The water inlet is in fluid communication with the first compartment and the first liquid passage channel, and the water outlet is in fluid communication with the second compartment and the second liquid passage channel. The second end cover is coupled to the other end of the heat conductor. The first and second liquid passage channels are in fluid communication with each other via an internal space of the second end cover to form a closed liquid circulation channel.

Abstract: An inflatable swimming pool includes a floor and a number of walls defining a pool interior configured to receive water. A drawing board is integrally formed or otherwise coupled to the pool and includes a selectively inflatable frame configured to securely hold a drawing surface configured to enable a user of the pool to draw or write on the drawing board while playing in the pool. A drawing utensil may be provided with the drawing board such as a water soluble crayon. A water sprayer assembly may be integrally formed with or coupled to the pool and include a port connectable to a water source and configured to deliver water from the water source to a sprayer element configured to spray water into the pool.

Abstract: A flexible floating apparatus has a flexible bone structure and a floating cover. The flexible bone structure has at least a first joint part and a second joint part. The first joint part and the second joint part are connected with a first resistance force to keep a relative position between the first joint part and the second joint part. A floating cover is made of buoyant material wrapping the flexible bone structure. The shape of the floating cover is changed when the relative position between the first joint part and the second joint part is changed.

Abstract: A water slide for connection to a water supply is provided. The inflatable structure may include a sliding surface having a first end and an opposing second end, an inflatable wedge-shaped ramp coupled to the first end of the sliding surface, where the ramp includes a top surface, and a landing portion coupled to the second end of the sliding surface. A water emitting device is coupled to the sliding surface, where the water emitting device is adapted to project water onto the ramp to lubricate the top surface while a user slides thereon.

Abstract: A built-in electric air pump for an inflating object includes a pump casing, a switch hand-wheel, a connection pipe, an air passage switching device, an air pump, and an air valve and a power switch. The pump casing includes a box-shaped chamber. The switch hand-wheel is provided at an external lateral side of the panel. The air passage switching device is provided with an internal pipe having a first opening and a second opening respectively arranged at an upper end and a lower end of the internal pipe. The first opening communicates with outside of the inflating object, and the second opening communicates with the air valve. A diaphragm is provided inside the internal pipe. A first venting hole and a second venting hole are respectively provided on internal walls at two sections of the internal pipe above and below the diaphragm. An external sleeve is provided outside the internal pipe. The lower end of the external sleeve is fixedly connected to the pump casing.

Abstract: An inflatable swimming pool includes a floor and a number of walls defining a pool interior configured to receive water. A drawing board is integrally formed or otherwise coupled to the pool and includes a selectively inflatable frame configured to securely hold a drawing surface configured to enable a user of the pool to draw or write on the drawing board while playing in the pool. A drawing utensil may be provided with the drawing board such as a water soluble crayon. A water sprayer assembly may be integrally formed with or coupled to the pool and include a port connectable to a water source and configured to deliver water from the water source to a sprayer element configured to spray water into the pool.

Abstract: A drain valve allows liquid to flow into or out of a liquid-container product by use of a restriction cap having a control ring that twists in and out of a base ring in order to control the flow. The restriction cap has a flow valve, having a top, apertures, and a base, and a control ring, having a top, base, center aperture, and protrusions. The control ring is sealed against the flow valve top by an O-ring when the drain valve is closed and is also sealed against the side of the flow valve. As the control ring is twisted into the base ring, control ring protrusions twist within channels inside the base ring and a piston valve is depressed, allowing liquid to flow. As the control ring is twisted out of the base ring, the control ring base blocks the flow apertures, preventing liquid from flowing.

Abstract: A filter pump cover according to the invention comprises a filter cap, an air purge valve, and a filter cap retainer. An air purge valve according to the invention is comprised of a valve cap, a screw-threaded portion, and a valve stem having one or more outward-facing inverse hooks at the bottom. The inverse hooks are located at the bottom of the air purge valve stem and hook onto the bottom lip of the hollow central portion of the filter cap retainer to prevent complete removal of the valve stem from the filter cap retainer. The valve screw-threaded portion is interrupted by a valve opening slot on one side that permits the release of air from the pump when the valve is opened. The hollow part of the filter cap retainer mates with and holds the air purge valve by means of the screw threads when the valve is closed.