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.

An amusement apparatus having a primary structure which receives and supports a first belt which spans in a longitudinal direction between belt supports and in a transverse direction; the first belt having an upper surface and an underside surface; a sub structure having at least two spaced apart pulleys which accommodate a secondary belt having inner and outer surfaces and which in use, travels about said at least two pulleys; the inner surface of the secondary belt engaging the at least two spaced apart pulleys. The outer surface of the secondary belt having at least one outstanding formation which engages the underside surface of the primary belt during at least part of travel of the secondary belt about said at least two pulleys, thereby inducing in the primary belt a contour which substantially conforms to the shape of said at least one formation of the secondary belt.

An amusement apparatus having a primary structure which receives and supports a first belt which spans in a longitudinal direction between belt supports and in a transverse direction; the first belt having an upper surface and an underside surface; a sub structure having at least two spaced apart pulleys which accommodate a secondary belt having inner and outer surfaces and which in use, travels about said at least two pulleys; the inner surface of the secondary belt engaging the at least two spaced apart pulleys. The outer surface of the secondary belt having at least one outstanding formation which engages the underside surface of the primary belt during at least part of travel of the secondary belt about said at least two pulleys, thereby inducing in the primary belt a contour which substantially conforms to the shape of said at least one formation of the secondary belt.

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.

In an artificial surfing system for generating a standing wave, comprising a water circuit, in which a first wave generating device is arranged, which comprises a wave pool and a ramp arranged upstream of the wave pool, over which the water flows down into the wave pool, wherein the water circuit downstream of the wave pool of the first wave generating device comprises a water backflow, via which the water is made available to a pump with which the water can be conveyed from the backflow upwards to the first wave generating device, at least one further wave generating device is arranged in the backflow, to which the water coming from the first wave generating device flows.

A method for handling insulating materials used for storing snow, wherein the insulating materials covering a heap of snow stored through the summer are taken off the heap of snow before the snow in the heap of snow is transferred to a selected use. In the method, the insulating materials used for covering the heap of snow stored through the summer are transferred to such another use, in which the insulating materials have at least one function other than mere storage of the insulating materials.

A method for handling insulating materials used for storing snow, wherein the insulating materials covering a heap of snow stored through the summer are taken off the heap of snow before the snow in the heap of snow is transferred to a selected use. In the method, the insulating materials used for covering the heap of snow stored through the summer are transferred to such another use, in which the insulating materials have at least one function other than mere storage of the insulating materials.

A movable dasher board system optimizes user safety in a hockey rink or similar arena. A bottom structure, provided by a sliding bottom surface or roller assembly, has low friction characteristics, typically a .sub.s of 0.05 or less with respect to ice if a sliding surface, or if roller bearings an effective coefficient of rolling friction 0.04 or less. A dasher board assembly is operatively connected to and extends upwardly from the bottom structure. Biasing and impact force absorbing devices (such as pneumatic or hydraulic or spring-encasing telescoping tubes, or foam, gel, or compression springs) bias the bottom structure and dasher board assembly to a desired position and absorb the impact of a human hitting the dasher board assembly to minimize the possibility of injury to the human. The system may be installed in a pre-existing rink or other arena.

A movable dasher board system optimizes user safety in a hockey rink or similar arena. A bottom structure, provided by a sliding bottom surface or roller assembly, has low friction characteristics, typically a .sub.s of 0.05 or less with respect to ice if a sliding surface, or if roller bearings an effective coefficient of rolling friction 0.04 or less. A dasher board assembly is operatively connected to and extends upwardly from the bottom structure. Biasing and impact force absorbing devices (such as pneumatic or hydraulic or spring-encasing telescoping tubes, or foam, gel, or compression springs) bias the bottom structure and dasher board assembly to a desired position and absorb the impact of a human hitting the dasher board assembly to minimize the possibility of injury to the human. The system may be installed in a pre-existing rink or other arena.