An adjustable frame device for a profiled sail device includes a fixed luff-sided first frame portion and a leech-sided second frame portion. The second frame portion includes a first flexible sail batten and a second flexible sail batten that are movable with respect to one another in a sail-batten longitudinal direction to adjust the frame device, with one of the sail battens serving as a compression batten and the other of the sail battens serving as a tension batten. An adjustable profiled sail device includes a first profiled surface against which air can flow, a second profiled surface against which air can flow, with the first profiled surface and the second profiled surface being spaced apart from one another, and an adjustable skeleton device disposed between the profiled surfaces. The skeleton device includes at least one adjustable frame device.

A tent is designed for use in the air, connected at its vertices to trees or the like. The tent is further designed with enough support from an independent support structure to create a shelter there-in while in the air or on the ground. Further, the tent is built atop a floating mat or base. In order to provide enough strength to the base that it can be used to float the entire tent or hold the tent airborne, straps extend from each vertex of the mat through a central portal and connect back to themselves. From these straps, loops are further created to attach the tent, by way of the loops, to trees while the entirety of the mat is buoyant enough to hold the tent and people there-in afloat.

A water vessel includes a deck having an upper surface and a lower surface. First and second hulls are spaced-apart from one another and operably coupled to the lower surface of the deck. At least one of the first and second hulls has an at least partially hollow interior. A storage tank is positioned within the at least partially hollow interior of at least one of the first and second hulls. A tub for holding water is supported by the deck. The tub includes an interior cavity having a capacity and is fluidically coupled to the storage tank. The storage tank has a capacity less than the capacity of the tub. A pump system is configured to direct water between the tub and the storage tank and at least partially fill the capacity of the tub.

The utility model relates to the field of articles for swimming, and relates to a lying ring for infants, comprising a main body; a bottom surface of the main body is provided with a chest supporting cushion, and the inner side of the main body is provided with a first waist protecting cushion and a second waist protecting cushion. The lying ring further comprises a first shoulder strap and a second shoulder strap; one end of the first shoulder strap and one end of the second shoulder strap extend to a back surface of the chest supporting cushion and are merged to form a crotch connecting strap; and the two shoulder straps are connected into a whole or integrated in one piece with the crotch connecting strap, so that the two shoulder straps are on the same connecting piece as two waist protecting cushions and the crotch connecting strap. The length of the crotch connecting strap and the shoulder straps can be adjusted at the same time.

Wakeboat ballast pump systems and methods are provided to monitor the operational condition and parameters of wakeboat ballast components. Systems and methods for sensing and measurement are provided to detect parameters associated with wakeboat ballast pumps and compartments, including systems and methods that can economically retrofit into existing wakeboat ballast systems. Systems and methods are also provided to enable automated action based on various operational conditions and parameters to improve the safety, automation, performance, convenience, and marketing advantage of wakeboat ballast pumps.

A swimming pool Smart Boat for pool maintenance and water safety is described. The Smart Boat includes chlorine and pH sensors for monitoring water quality and is capable of releasing chemicals into the pool water based on monitoring. A screen panel is configured to trap debris in the pool. Additionally, the Smart Boat provides for water safety by monitoring water disturbances which indicate a swimmer has entered the pool and sending an alert based on the detection of a disturbance. A remote control unit provides alerts and controls navigation, the release of chemicals and the screen panel position.

A device for rolling up and unrolling a floating mat. The device of the invention includes an elongated hollow cylinder having a first end and a second end. The cylinder has an elongated slot formed therein which extends between the ends thereof. A mat retainer bar is positioned in the cylinder. One end of the mat extends inwardly through the slot in the cylinder and is secured to the mat retainer bar. End cap assemblies are secured to the ends of the cylinder and have a lever secured thereto. The mat may be rolled up on the cylinder or unrolled from the cylinder by rotating the cylinder by way of the levers. The levers may be pivotally moved with respect to the end cap assemblies so that they may be stowed in the end cap assemblies and the ends of the cylinder.

A device for rolling up and unrolling a floating mat with the floating mat having a first end, a second end, a first side, a second side, an upper surface and a bottom surface is disclosed. The device of the invention includes an elongated hollow cylinder having a first end, a second end and an outer surface. The cylinder has an elongated slot formed in the outer surface thereof which extends between the ends thereof. A mat retainer bar is positioned in the cylinder. One end of the mat extends inwardly through the slot in the cylinder and is secured to the mat retainer bar. End caps are secured to the ends of the cylinder and have a lever secured thereto. The mat may be rolled up on the cylinder or unrolled from the cylinder by rotating the cylinder by way of the levers.

A device for rolling up and unrolling a floating mat with the floating mat having a first end, a second end, a first side, a second side, an upper surface and a bottom surface is disclosed. The device of the invention includes an elongated hollow cylinder having a first end, a second end and an outer surface. The cylinder has an elongated slot formed in the outer surface thereof which extends between the ends thereof. A mat retainer bar is positioned in the cylinder. One end of the mat extends inwardly through the slot in the cylinder and is secured to the mat retainer bar. End caps are secured to the ends of the cylinder and have a lever secured thereto. The mat may be rolled up on the cylinder or unrolled from the cylinder by rotating the cylinder by way of the levers.

The present invention discloses a water skateboard apparatus, including a loading component and a number of skateboard bodies that are pushed forward together, where a number of the skateboard bodies are spaced apart, and the loading component is detachably connected to top surfaces of a number of the skateboard bodies. The water skateboard apparatus of the present invention greatly increases the loading space of the water skateboard apparatus by the loading component having a sufficient loading space. The propulsion power of the water skateboard apparatus is greatly improved by providing power through a number of the skateboard bodies. At the same time, the loading component and a number of the skateboard bodies can be installed and disassembled, which is convenient for transportation, maintenance and replacement.