A dolly includes a first skate, a second skate, and a rod connected to the skates. The first skate is connected to a plurality of wheels and has a receiving region. The second skate is connected to a plurality of wheels and has a receiving region. The second skate includes an outer lateral surface having an aperture. The rod is connected to the first skate and the second skate via the respective receiving regions of the respective skates. The rod is configured to extend through the aperture such that a portion of the rod extends outwardly from the outer lateral surface of the second skate.

A self-standing portable ice skating rink structure that does not penetrate the underlying surface and generally requires no tools or hardware for installation is provided. The ice skating rink structure includes a perimeter component and one or more tension members. The perimeter component can include one or more board holding members and/or one or more optionally interlocking side boards.

A snowboard binding including a baseplate, a bearing highback rotatable relative to the baseplate, a pedal to operate the bearing highback at clip-in between an opening position and a closing position and a locking element to lock the rotation of the bearing highback relative to the baseplate in closing position against the elastic return of a lever. The locking element includes two ratchet notches with the lever. The snowboard binding includes a lug that is received into a fork of the locking element with notches or of the lever to rotate the locking element with notches or the lever by unlocking the lever from one of the notches and by locking it with the other notch at clip-in.

An adjustment mechanism for an electric power-driven shoe, the mechanism comprising a shoe sole (1) is presented, wherein a plurality of rolling wheels (2) are arranged below the shoe sole (1); a foot-positioning mechanism is arranged above the shoe sole (1) and is provided with an angle-adjusting mechanism for adjusting an angle between the foot-positioning mechanism and a lengthwise direction of the shoe sole (1).

One embodiment of a skateboarding balance device where an elongated structure (10) has four straps (16L, 16R) disposed thereunder said structure. This pad (10) is composed of flexible material. The straps (16L, 16R) provide for a method of securely attaching said pad (10) to a skateboard (SK1) by means of velcro (20L, 18R). The straps are made of material with elasticity.

Various embodiments for a panel that may be combined with other similar panels to form a padding layer of an athletic field, or other surface, are disclosed. The panel for use in a padding layer of a panel system includes at least one water accumulation region positioned at or near a perimeter of the panel. The at least one water accumulation region is defined by a pyramidal surface that slopes downwards from a center of the panel to distal edges of the panel such that the center has a height relative to a ground surface greater than the distal edges of the panel, a plurality of projections projecting from the pyramidal surface, and a ridge projecting from the pyramidal surface, the ridge extending along a perimeter of the panel, wherein the ridge has a projection height sufficient to retain water at the perimeter of the panel.

The present disclosure provides a detachable training wheel apparatus for mounting to the underside of a skateboard tail or nose to assist with balancing a user during manoeuvres which require tipping of the skateboard onto two wheels, while allowing the board to continue rolling along the ground with minimal friction. The apparatus comprises a single wheel mounted to a mounting board by a pair of supports and a central bushing, with the opposing side of the mounting board having a flat surface provided with attachment means for detachably coupling to the skateboard underside, such as a hook and loop surface.

A portable energy-saving and environment-friendly electric vehicle is light in weight, small in volume, convenient in electricity charging, and disassemble to be collected into a backpack for portability. The backpack is further furnished with a crank-handle generator to fulfill manpower electricity generation and working out simultaneously. This energy-saving and environment-friendly electric vehicle is mainly consisted of two adjustable skateboards and a support rod for adjusting speed and connecting a battery set. The battery set can be conveniently replaced roadside or domestically. In a situation of power out, manpower can be used to charge the battery set. Thus, the situation of power out to shut down the electric vehicle can be met. In addition, the battery set associated with the generator is reliable for charging mobile phones and computers.

An auto-balancing transportation device having a wheel structure and foot platforms that pivot between an in-use and a stowed position. The pivot axis for each platform is provided within the wheel structure so that the force exerted by a rider when stepping on a foot platform is applied to the wheel structure at a point within the wheel structure, as opposed to external to it, which is unstable and may cause the device to tip over.

The present invention concerns the field of garments, namely the shoes sector, especially relating to children, although it is likewise applicable to young people and adults. The object of the present invention is an outer sole (1), on which are inserted two structures, a first one enabling one user to slide when he is contacting the ground, moving as if he were on skates, and a second one enabling the user to move in a conventional way. The first structure, which enables a movement in a rolling mode, consists in a frame (2) containing a wheel (3) and, on one end, presents a front locking member (4) and, on another end, a locking member (5) for disengagement of the frame (2) by pressing downwards.