A modular barrier system enables demountable outdoor rinkstypically for ice hockey, or ice skating, or street hockey. A rink includes multiple panels, each having a factory-attached link. These panels are linearly disposed, adjacent to one another, to form a piecewise continuous boundary wall enclosing a desired area. Attaching one link to the next, typically via insertion of a thumbscrew, connects the panels into a robust assembly. Both straight and curved panels are provided, thereby enabling a rink with round corners. Each panel includes a shell molded from plastic resin, and has a hollow interior which can be filled with water (or other ballast).

A safety component for a skating rink. The safety component comprises a body portion connectable to a transparent barrier located above dasher boards of the skating rink, wherein upon impact the body portion is capable of at least partially absorbing impact forces. The safety component further comprises a curved rink-facing surface that provides a substantially convex curved surface facing the skating rink. The curved rink-facing surface has a radius of curvature suitable for redirecting the impact forces away from the convex curved surface.

A modular ramp system includes a ramp component and a connector releasably joined to the ramp component. The ramp component has first and second inclined surfaces and a connecting portion positioned between the first and second inclined surfaces. The connector has a bottom side formed with a first and second coupling section connectable to the connecting portion. The connector is positionable in a first position in which one of the first and second coupling sections is releasably joined to the connecting portion of the ramp component and the other of the first and second coupling sections is adapted to releasably couple to a ramp or an external structure, and a second position in which the first and second coupling sections are releasably joined to connecting portion of the ramp component.

A modular ramp system includes a ramp component and a connector releasably joined to the ramp component. The ramp component has first and second inclined surfaces and a connecting portion positioned between the first and second inclined surfaces. The connector has a bottom side formed with a first and second coupling section connectable to the connecting portion. The connector is positionable in a first position in which one of the first and second coupling sections is releasably joined to the connecting portion of the ramp component and the other of the first and second coupling sections is adapted to releasably couple to a ramp or an external structure, and a second position in which the first and second coupling sections are releasably joined to connecting portion of the ramp component.

A module for the construction of a recreational track, particularly a bicycle track having a frame on which the modules are placed, wherein the module has an upper part intended for riding and making a curved surface, and in the top view it has a quadri-lateral-like shape with two sides in the shape of arches, a rear wall and a front wall, wherein the rear wall and the front wall form the base of the module, as well as the left face wall and the opposite right face wall, which are placed between the rear wall and the front wall, characterized in that in the side view, the rear wall has the quadrilateral shape, the sides of which converge upwards at an acute angle, and in the side view the front wall has the shape of an arc connecting the upper part with the base of the module.

A module for the construction of a recreational track, particularly a bicycle track having a frame on which the modules are placed, wherein the module has an upper part intended for riding and making a curved surface, and in the top view it has a quadri-lateral-like shape with two sides in the shape of arches, a rear wall and a front wall, wherein the rear wall and the front wall form the base of the module, as well as the left face wall and the opposite right face wall, which are placed between the rear wall and the front wall, characterized in that in the side view, the rear wall has the quadrilateral shape, the sides of which converge upwards at an acute angle, and in the side view the front wall has the shape of an arc connecting the upper part with the base of the module.

A method for repairing an ice of an ice field comprising drilling, by an ice repairing apparatus, at least one hole to the ice of the ice field to remove, at least partly, a damaged ice, providing a solid ice insert having substantially the same size as the at least one hole, and inserting the ice insert into the at least hole such that a top surface of the ice insert is substantially on the same level with a surface of the ice of the ice field. An ice repairing apparatus comprising a rotating blade configured to drill a hole to an ice of an ice field, a rotating shaft configured to rotate the blade, wherein the shaft comprises a first end coupled with the blade, and a second end configured to be coupled with a power source for rotating the shaft; and a limiter coupled with the shaft configured to set against a surface of the ice and to prevent drilling of the blade into the ice when a desired depth of the hole is achieved. An ice repairing arrangement comprising an ice repairing apparatus, a mould for producing at least one ice insert, and freezer configured to freeze and/or to keep frozen at least one ice insert.

Rate of deceleration is an important factor in determining the severity of injuries possibly sustained when participants collide with a wall assembly while playing, for example, ice hockey. Decreasing the rate of deceleration of the participant during such a collision with a wall assembly, by extending the distance over which a participant decelerates, is a key factor in reducing head and spinal injuries. The present disclosure provides apparatuses for decreasing the rate of deceleration by providing a wall assembly having a moveable piece that includes a first position and a plurality of second positions with a bias of the moveable piece to the first position. The movable wall assembly can move independently of a support frame, thereby further decreasing the rate of deceleration of a participant in a collision. The movable wall assembly can be supported on a base and slidable with respect to the base.

A building system comprising a combination of precast or prefabricated structural elements to serve as skate parks, swimming pools, or community gathering places; and to provide refuge such as tornado shelters. Precast or pre-manufactured modular cells have an open bottom, a first and second side wall, a rear wall, and a functional top surface. The functional top surfaces of the modules include an inclined or curved surface. When combined, the top surfaces form useful areas such as a skate park, swimming pool, or amphitheater seating. Sleeves, keys, and other features facilitate the assembly of the modules. A cast slab may be poured after assembly; or the modules may be secured to a slab. Example modules include a Flat Ramp Block, a Circular Ramp Block, and a Circular Bowl Block, a stair block, and a ledge block.

A building system comprising a combination of precast or prefabricated structural elements to serve as skate parks, swimming pools, or community gathering places; and to provide refuge such as tornado shelters. Precast or pre-manufactured modular cells have an open bottom, a first and second side wall, a rear wall, and a functional top surface. The functional top surfaces of the modules include an inclined or curved surface. When combined, the top surfaces form useful areas such as a skate park, swimming pool, or amphitheater seating. Sleeves, keys, and other features facilitate the assembly of the modules. A cast slab may be poured after assembly; or the modules may be secured to a slab. Example modules include a Flat Ramp Block, a Circular Ramp Block, and a Circular Bowl Block, a stair block, and a ledge block.