An ultraviolet court-illumination system is used to light a playing court and any related equipment in a fluorescent manner. The system includes at least one playing court, a first plurality of ultraviolet (UV) court lights, a plurality of fluorescent game boundary-markers, and at least one fluorescent game fixture. The playing court is used for playing games or sports. The plurality of fluorescent game boundary-markers is superimposed onto the playing court and is used to delineate the boundaries of the playing court. The fluorescent game fixture is mounted onto the playing court and may be a net, a goal, or any other fixture used to play the sport. Each of the first plurality of UV court lights is peripherally positioned about the playing court and is used to illuminate the fluorescent game boundary-markers and the fluorescent game fixture. The first plurality of UV court lights is powered by a power source.

Provided is ring equipment made on the basis of an idea going beyond conventional knowledge, which is capable, not only of enhancing the mood of spectators and further creating feeling of high tension and interest of a match, but of making it possible for players to effectively use the ring equipment for the handling of the match, or the like, thereby making the match richer in content. A rope strung between corner posts includes a rope body having translucency and a light emitting member buried in the rope body. The ring equipment is configured so that light from the light emitting member is passed through the rope body and emitted outward in the radial direction of the rope body.

An exemplary mobile and transportable skate park system is presented. The skate park system may include one or more transportable units configured to transition from a transport configuration to a skate configuration. In the skate configuration, one or more skate movable skate decks may transition from a nested transport configuration to an aligned skate configuration forming all or part of a skate park configuration (for example, a half pipe). In some embodiments, two transport units in the skate configuration may be coupled together to form a half pipe.

An exemplary mobile and transportable skate park system is presented. The skate park system may include one or more transportable units configured to transition from a transport configuration to a skate configuration. In the skate configuration, one or more skate movable skate decks may transition from a nested transport configuration to an aligned skate configuration forming all or part of a skate park configuration (for example, a half pipe). In some embodiments, two transport units in the skate configuration may be coupled together to form a half pipe.

A platform for holding events including the use of replicas of medieval armor and/or replicas of medieval weapons, including a battle area located on a supporting structure at a level above the platform base, and smooth slopes extending downward along the entire perimeter from the sides of the battle area and having a base of hard material and executed with a soft coating, wherein a stumbling barrier is located along the entire perimeter or along two opposite sides of the battle area.

A running track includes a reinforced concrete slab base that is poured over and around post-tensioning cables suspended therein. The post-tensioning cables include transverse cables that extend transversely across the base, and lengthwise cable structures extending lengthwise through the base. Each lengthwise cable structure includes a series of individual segments that are joined end-to-end to form respective continuous loops and are individually tensioned. The lengthwise cable structures thus exert compressive forces on the base that are continuous and uninterrupted about the circumferential length of the track. The lengthwise cable segments are joined/tensioned from within voids initially formed within the concrete base and, after tensioning, these voids are filled with concrete to provide a concrete base having a uniform top surface that can also be covered in a running surface.

According to some implementations a floor is provided that comprises a substrate having a top surface and a groove formed therein. The groove has an open end located at the top surface of the substrate. The groove further includes a bottom wall and side walls with the bottom wall located a first distance below the top surface of the substrate. The groove extends along a length of the substrate. A light diffusing optical fiber or other lighting means is supported inside the groove by a transparent or translucent fiber support that spaces the light diffusing optical fiber or other lighting means a distance away from the bottom wall, side walls and open end of the groove. According to some implementations the walls of the groove or the outer surfaces of the fiber support are provided with light reflectors to enhance the propagation of light toward the open end of the groove.

A digital video ramp assembly incorporates process-formed structural LED tiles with modular components that join in a system of scalable structural LED tiles forming a complete LED display structure with integrated LED embedded tiles with interlocking and inter-trans-positioning features sometimes requiring additional structural framing.

A digital video ramp assembly incorporates process-formed structural LED tiles with modular components that join in a system of scalable structural LED tiles forming a complete LED display structure with integrated LED embedded tiles with interlocking and inter-trans-positioning features sometimes requiring additional structural framing.

A dasher board assembly provides enhanced safety, such as for ice hockey rinks. The assembly is constructed so that on low height impacts a dampening material with at least one of a damping coefficient of about 1.7-3.210.sup.4 N-s/m, a spring constant of about 1.5-3.010.sup.6 N/m, and a loss coefficient greater than 0.15, absorbs the impact. On high height impacts both the dampening material and deflection of cantilevered generally vertical polygonal aluminum tubes absorb the impact. The assembly results in a Head Injury Criteria of less than 250 for all realistic scenarios, and a reduction of HIC values of at least 30% compared to an equivalent assembly with a rigid frame.