Examples of the present disclosure are related to systems and methods for an attachment for a stroller, walker, wheelchair, ambulation device, or other transportation device. More particularly, embodiments relate to a wheeled board that is configured to be coupled to an axle and a support of the transportation device, wherein a lower clamp connected to the axle is positioned orthogonal to an upper clamp coupled to the support of the transportation device.

The invention provides a sports equipment with an interchangeable sports function, including a front main body, a rear main body and an interchangeable accessory; the front main body is provided with a front strap for fixing a flat shoe, and a non-detachable front roller after being implemented with the interchangeable accessory; the rear main body is disposed directly behind the front main body and capable of being retractably adjusted back and forth relative to the front main body, the rear main body is provided with a rear strap for fixing the flat shoe; the interchangeable sports function comprises a roller, a snowboard, a skate blade and a snow-walking board, the interchangeable sports function can be achieved by installing the snowboard, a front skate blade or the snow-walking board, and detachably mounting on a rear quick-release fitting on the rear main body.

A backpack has a folding durable panel attached to the back side thereof. The panel is configured to wrap around a middle portion of a skateboard deck, such that the trucks and wheels positioned away from the back of the wearer. The skateboard is secured to the backpack by an attachment means attached to the ends of the fabric panel.

Electric vehicles, electric vehicle systems, and methods for controlling the electric vehicles or electric vehicle systems are described. In one implementation, an electric vehicle includes a main body for carrying a user, a plurality of electric wheels mounted on the main body, and a controller mounted on the main body. The main body includes a front main body and a rear main body removably connected to the front main body. The front main body can move independently when disconnected from the rear main body. In some embodiments, at least one of the plurality of electric wheels is mounted on the front main body. The controller is configured to send drive signals to the plurality of electric wheels according to input of the user. The plurality of electric wheels are configured to rotate according to the drive signals. The electric vehicles and the electric vehicle systems described in the present disclosure have a separable main body, advantageously allowing for short or medium distance transportation at low cost, flexibility in turning, and great potential for expanding their functionality.

An electric vehicle includes a carrier, a free-wheel unit, a foot-wheel unit, a driving unit, a first angle-detecting unit and a micro processing unit. The carrier is for supporting a user. The free-wheel unit is disposed at one end of the carrier. The foot-wheel unit is disposed at the other end of the carrier. The driving unit is disposed at the free-wheel unit or the foot-wheel unit, and is for providing a power to the electric vehicle. The first angle-detecting unit is disposed at the free-wheel unit or the carrier, and is for detecting a swinging status between the free-wheel unit and the carrier so as to provide a swinging signal. The micro processing unit is signally connected to the driving unit and the first angle-detecting unit. When the swinging signal achieves a predetermined condition determined by the micro processing unit, the driving unit is turned on.

A board pocket or flap shaped device to store objects on a flat rigid or semi-rigid surface for convenient retrieval. The board pocket may be used during a board sport and attached to a board such as a surfboard, paddle-board, kite-surfing board, wake-board, or wind-surfing board. The pocket may also be used for boards used in land and air sports such as skateboards and sky-surf boards. The board pocket employs a thermo-elastic polymer to grip, by friction, the objects to be stored therein. Any objects, for example, surfwax or car keys may be stored and retrieved from the board through a slit or opening in the pocket. The pocket is attached to the board by an adhesive or fastener.

A motorized roller skate having two skate boards and a hand device. Each of the skate boards and the hand device respectively has a signal device and at least one sensor. Each of the skate boards and the hand device transmits a detection signal detected by the at least one sensor to a control center via the respective signal devices.

A carriage-apparatus; the carriage-apparatus includes a board-body, a first wheel-unit, a second wheel-unit, rod and an attachment-clamp. In a preferred embodiment, the rod is adjustable via telescopic means. The attachment-clamp is configured to attach the carriage-apparatus to a conventional shopping-cart. The carriage apparatus is useful for providing a safe, convenient, and entertaining way for parents to watch their children while shopping in stores.

An accessory mounting system to mount accessories onto recreational vehicles. The accessory mounting system can include an accessory mounting frame with an elongated seat, left and right attachment wings extending perpendicularly away from a first side of the seat and an accessory post extending in parallel between the left and right attachment wings to receive an accessory rack thereon. The accessory mounting system can also include an accessory rack with a sleeve to receive the accessory post therethrough and a flexible accessory clip to clip onto the accessory post when the accessory post is inserted through the sleeve, the accessory rack can also include at least two fastening devices to fasten an accessory bag thereto.

A skateboard tool system (100) may comprise a first arm (200), a second arm (300), a third arm (400) attached to a body (500) with each arm forming an overall T shape and each arm having a distal end attached to a useful implement. To gain mechanical advantage, the body (500) may contain or be integrated with a rethreading tool (540). The centralized location of the re-threading tool in combination with the T shape allows for a superior purchase or grip while rotating the re-threading tool. The body may define various voids to comport with a unique L shaped screw driver (600), the screw driver having a shorter (605) and a longer (607) longitudinal member giving additional leverage in rotating a Phillip head screw driver (610). A cutting blade is retained within the body for ease of access and safety.