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 first and second coupling sections connectible 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 is positionable in a second position in which the first and second coupling sections are releasably joined to the connecting portion of the ramp component.

An apparatus configured to make ski runs comprising a support structure; a first tiller; at least one tracksetting device; and a connection structure that couples the tracksetting device to the first tiller; the connection structure being configured to allow the free rotation about an axis, such as transverse to the advancing direction, of the tracksetting device with respect to the tiller.

An apparatus configured to make ski runs comprising a support structure; a first tiller; at least one tracksetting device; and a connection structure that couples the tracksetting device to the first tiller; the connection structure being configured to allow the free rotation about an axis, such as transverse to the advancing direction, of the tracksetting device with respect to the tiller.

A liquid cooling system for an outdoor ice forming surface provides a geothermal heat pump that has a refrigeration circuit with a compressor that is disposed between a cold tube section and a hot tube section. An outdoor structure has an upward facing ice forming surface that is configured to retain a body of ice, where a coolant line is provided at or near the ice forming surface. A fluid pump is coupled with the coolant line and is configured to circulate liquid through the coolant line and over the cold tube section of the geothermal heat pump to dispense heat before being recirculated to the ice forming surface of the outdoor structure.

A liquid cooling system for an outdoor ice forming surface provides a geothermal heat pump that has a refrigeration circuit with a compressor that is disposed between a cold tube section and a hot tube section. An outdoor structure has an upward facing ice forming surface that is configured to retain a body of ice, where a coolant line is provided at or near the ice forming surface. A fluid pump is coupled with the coolant line and is configured to circulate liquid through the coolant line and over the cold tube section of the geothermal heat pump to dispense heat before being recirculated to the ice forming surface of the outdoor structure.

A skating track, in particular of the skateboard ramp type, includes: a self-supporting carrier structure of rigid foam, able to rest on the ground; and a skating surface attached to the carrier structure. The carrier structure has mortises and tenons embedded in the mortises. The skating surface is fixed to the tenons, the tenons and the mortises coupling the skating surface on the carrier structure and holding it in position.

A skating track, in particular of the skateboard ramp type, includes: a self-supporting carrier structure of rigid foam, able to rest on the ground; and a skating surface attached to the carrier structure. The carrier structure has mortises and tenons embedded in the mortises. The skating surface is fixed to the tenons, the tenons and the mortises coupling the skating surface on the carrier structure and holding it in position.

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.

The illuminants arrangement includes a plurality of LED-based light sources that are encased in a water-tight manner by way of one or more encasings, wherein the light sources are, at least in a group-wise manner, operationally interconnected by way of electrical connection leads. The connection leads include voltage supply leads. The illuminants arrangement as a protection of the one or more encasings and the light sources from mechanical damage includes at least one protective overlay for being placed onto the one or more encasings, so that light emitted by the light sources can be emitted through the at least one protective overlay. The illuminants arrangement can include a heating device. Each of the light sources can be suitable for emitting light of a variable color, wherein the color of each of the light sources can be individually selected by way of a control unit.

The illuminants arrangement includes a plurality of LED-based light sources that are encased in a water-tight manner by way of one or more encasings, wherein the light sources are, at least in a group-wise manner, operationally interconnected by way of electrical connection leads. The connection leads include voltage supply leads. The illuminants arrangement as a protection of the one or more encasings and the light sources from mechanical damage includes at least one protective overlay for being placed onto the one or more encasings, so that light emitted by the light sources can be emitted through the at least one protective overlay. The illuminants arrangement can include a heating device. Each of the light sources can be suitable for emitting light of a variable color, wherein the color of each of the light sources can be individually selected by way of a control unit.