A paddling method for a craft is provided, which is a method for driving a rotating ring to float and rotate by the dynamic force of water. The rotating ring comprises a rotating inner ring and a rotating outer ring, at least three connectors are connected between the rotating inner ring and the rotating outer ring, an external part of the connector is provided with a rotating blade, and the rotating blade is placed in water in a water-sealing container. The paddling method for the craft of the present invention has advantages of being novel in conception and design, good in rotating scenery effects, good in impression and the like.

A paddling method for a craft is provided, which is a method for driving a rotating ring to float and rotate by the dynamic force of water. The rotating ring comprises a rotating inner ring and a rotating outer ring, at least three connectors are connected between the rotating inner ring and the rotating outer ring, an external part of the connector is provided with a rotating blade, and the rotating blade is placed in water in a water-sealing container. The paddling method for the craft of the present invention has advantages of being novel in conception and design, good in rotating scenery effects, good in impression and the like.

An underwater toy includes a longitudinal body with a nose portion, an aft portion and an elastic element. A longitudinal tail with a first end is inserted into a substantially cylindrical portion of the longitudinal body. A second end of the longitudinal tail has an ejection opening for water. The first end includes a portion for sealing between the substantially cylindrical portion of the body and the first end of the longitudinal tail. The tail is thereby provided in the body and is movable in a longitudinal direction inside the body. A cavity is defined by the substantially cylindrical portion of the body and the longitudinal tail. The ejection opening for water is in fluid communication with the cavity. An elastic element is attached in the body and in the tail.

An underwater toy includes a longitudinal body with a nose portion, an aft portion and an elastic element. A longitudinal tail with a first end is inserted into a substantially cylindrical portion of the longitudinal body. A second end of the longitudinal tail has an ejection opening for water. The first end includes a portion for sealing between the substantially cylindrical portion of the body and the first end of the longitudinal tail. The tail is thereby provided in the body and is movable in a longitudinal direction inside the body. A cavity is defined by the substantially cylindrical portion of the body and the longitudinal tail. The ejection opening for water is in fluid communication with the cavity. An elastic element is attached in the body and in the tail.

An apparatus or educational toy comprising a main body (120, 220, 320, 520) and a drive mechanism (140, 240, 340, 540), wherein the drive mechanism (140, 240, 340, 540) comprises a reservoir (142, 242, 342) for storing a driving liquid, a discharge outlet (144, 244a, 244b, 344, 544a, 544b) through which the driving liquid is discharged from the main body (120, 220, 320, 520) to generate a driving thrust, a liquid delivery path (146, 246a, 246b, 346) for delivering the driving liquid for a reservoir outlet (148, 348, 448) to the discharge outlet (144, 244a, 244b, 344, 544a, 544b), and a threshold setting device (147, 347); and wherein the threshold setting device (147, 347) sets a threshold thrust level so that the driving liquid is to pass from the reservoir (142, 242, 342) and discharged from the discharge outlet (144, 244a, 244b, 344, 544a, 544b) upon reaching the threshold thrust level during operation.

An apparatus or educational toy comprising a main body (120, 220, 320, 520) and a drive mechanism (140, 240, 340, 540), wherein the drive mechanism (140, 240, 340, 540) comprises a reservoir (142, 242, 342) for storing a driving liquid, a discharge outlet (144, 244a, 244b, 344, 544a, 544b) through which the driving liquid is discharged from the main body (120, 220, 320, 520) to generate a driving thrust, a liquid delivery path (146, 246a, 246b, 346) for delivering the driving liquid for a reservoir outlet (148, 348, 448) to the discharge outlet (144, 244a, 244b, 344, 544a, 544b), and a threshold setting device (147, 347); and wherein the threshold setting device (147, 347) sets a threshold thrust level so that the driving liquid is to pass from the reservoir (142, 242, 342) and discharged from the discharge outlet (144, 244a, 244b, 344, 544a, 544b) upon reaching the threshold thrust level during operation.

The invention is remote-controlled water toy that has an outer shell that is a continuous and external surface, a plurality of apertures in the outer shell that allow water to infiltrate the outer shell, and an interior volume that collects and stores water that has infiltrated the outer shell. The remote-controlled water toy can shoot water, be shot at by other similar vehicles, retain water that hits them directly in the interior volume, continue to be operational after being hit, and sink or otherwise become deactivated when a predetermined volume of water has infiltrated the exterior shell.

A remote control boat that includes a self-righting apparatus adapted to right the boat after it has capsized. In some embodiments, a weighted coupler is attached to the motor output shaft and the drive shaft to prevent the drive shaft from moving for a period of time after the motor is turned on. In some embodiments, one or more components may be attached to the weighted coupler by a set screw configuration. In some embodiments, one or more components may be attached to the weighted coupler by a collet-type configuration.

A modular sensing device can generate output via one or more output devices. The modular sensing device can include an inertial measurement unit that generates sensor data corresponding to user gestures performed by a user, a wireless communication module, a mode selector enabling the user to select a mode of the modular sensing device out of a plurality of modes, and one or more output devices configured to generate output based on the user gestures and the selected mode. The selected mode configures the manner in which the modular sensing device generates output via the one or more output devices based on the user gestures.

A modular sensing device can generate output via one or more output devices. The modular sensing device can include an inertial measurement unit that generates sensor data corresponding to user gestures performed by a user, a wireless communication module, a mode selector enabling the user to select a mode of the modular sensing device out of a plurality of modes, and one or more output devices configured to generate output based on the user gestures and the selected mode. The selected mode configures the manner in which the modular sensing device generates output via the one or more output devices based on the user gestures.