A field cover system to selectively cover, and uncover, a sports field or similar is described. The field cover system comprising a flexible resilient planar material to extend and cover the sports field, and to retract and uncover the sports field, a plurality of elongate support members, moveable to extend between a retracted position and an extended position, and one or more tensile members configured to, in use, support and/or attach to the cover and attach to the plurality of elongate support members. In the retracted position the plurality of elongate support members is located substantially below a surface level of the sports field, and in the extended position and with the tensile members attached to or supporting the cover, the elongate support members elevate the flexible resilient planar material above the sports field.

A system for providing player training including a grid of individually powered, processor controlled and communicable lighting elements and sensors which are embedded within a playing surface associated with the event, the lighting elements interfacing with at least one of a player worn sensor and/or a remote processor device for providing a visual illustration of any number of parameters associated with an actual player performance, including real time motion progressions of the player which are represented on the field surface and/or recreated on a processor driven screen which films or otherwise tracks the event. The simulated progressions can further replicate the desired motions of the positional player's intended motions or those of an opposing positional player and in lieu of the actual player being on the playing surface.

A sports detection and reporting system that locates the players and the ball to determined if certain play criteria have been met. The system also displays on the field detected locations relevant to the players and the play in real time.

A standing-ride type moving device includes: a board; wheels that are disposed on right and left sides of a front side and a rear side in a traveling direction of the board; drive units that is configured to independently rotationally drive the wheels disposed on the front side in the traveling direction of the board; a first sensor that is configured to detect a shift in the center of gravity of the rider riding the board; a steering board that is disposed on the front side in the traveling direction of the board; a second sensor that that is configured to acquire rotation information of the steering board; and a control unit that is configured to control the drive units.

A removable lighting system for skates or skateboards by mounting a lighting assembly underside of the skateboard and providing a light in the night to the user. The lighting system, including: a riding platform having a top riding surface and a bottom surface a front lighting source; a back lighting source and at least one power source.

Disclosed is a self-balancing vehicle including a left housing assembly, a right housing assembly, a left wheel train, a right wheel train and a rotation mechanism. The left wheel train is connected with the left housing assembly. The first end of the rotation mechanism is connected with the right wheel train and the right housing assembly, and the second end of the rotation mechanism is inserted into the left housing assembly and rotationally connected with the left housing assembly. The rotation mechanism is just arranged in the right housing assembly, but connected with the right housing assembly and the right wheel train respectively, thus reducing the strength requirements of the self-balancing vehicle on the left housing assembly and simplifying the components of the left housing assembly.

A system for analysis of user gait and to provide correction in form of haptic and visual feedback. This system comprises a motion and force sensors and a haptic actuator embedded in the user shoe insoles in communication with a smart-phone based analysis application, configured to calculate motion and orientation of the user feet in relation to the value, location and distribution of ground reaction forces measured by sensors located in the shoe insoles and after analysis of said forces and motion, to provide haptic feedback to the user foot instructing about the location (and timing) of pressure the user must apply to achieve an optimal gait.

Traction systems for snowmobile skis producing traction on snow and ice covered surfaces; consisting a pair of snowmobile skis each having an assembly of parts; driven by an hydraulic rotor that pivots the skis, adjusting their position when cornering, providing traction, according to a snowmobile steering system . And is powered and controlled by at least one of: hydraulic steering system, an electro-hydraulic steering system; an electric power steering system using an electric motor instead of hydraulic rotor.

A four-wheel sensor controlled vehicle having a base and a control box installed with a battery and a control panel; two driving wheels are installed at the bottom surface of the base close to the front edge of the base, and two universal wheels are installed at the bottom surface of the base close to the rear edge of the base. The driving wheel has a hub assembled with a hub motor assembly of a motor. The base is installed with four weighing sensors at four corners, the first weighing sensor and the third weighing sensor respectively correspond to the fore sole and rear sole of the left foot, the second weighing sensor and the fourth weighing sensor respectively correspond to the fore sole and the rear sole of the right foot. The control panel is connected with the motor and the weighing sensors.

A wearable motorized device comprising a shoe bracket, which can be fastened to a shoe; wheels that are installed on the left and right sides of the shoe bracket in parallel to support the wearer's lateral skating and longitudinal walking; a driving motor for rotationally driving the wheels; and a battery pack for powering the driving motor. The wheels are not coaxially installed on the two sides of the shoe bracket to drive the wearer's longitudinal skating, but instead are installed on the two sides of the shoe bracket in parallel to drive the wearer's lateral skating; the wearer can position his/her legs apart during skating, so the skating stability is improved. Its general contour does not significantly exceed the contour of the shoe in the longitudinal direction, thus and it will not strain the wearer when ascending or descending stairs.