A cross-link for tracks of snow groomers, the cross-link comprising a section bar, which has an elongated shape, extends in a first direction, is limited by an outer surface and comprises a portion for fixing to at least one belt of a track of a snow groomer, and it is provided with an inner cavity, which extends through the section bar in the first direction, and is open at the side in the first direction; wherein the inner cavity is filled, at least in part, with a filling material comprising metal foam, and in certain embodiments, the inner cavity is completely filled with the filling material.

A snow tooth for a snow tiller for preparing the snowpack of ski slopes; the snow tooth comprising a first projection having a first height and a second projection having a second height, the first height and the second height; the snow tooth being shaped so as to be connected to a rotating shaft and have, in use, a main direction of rotation. The first projection is arranged along the snow tooth so that, in use, the first projection sinks into the snowpack before the second projection in particular when, in use, the snow tooth is attached to a shaft of the snow tiller and the shaft rotates in the main direction of rotation.

A snow tooth for a snow tiller for preparing the snowpack of ski slopes; the snow tooth comprising a first projection having a first height and a second projection having a second height, the first height and the second height; the snow tooth being shaped so as to be connected to a rotating shaft and have, in use, a main direction of rotation. The first projection is arranged along the snow tooth so that, in use, the first projection sinks into the snowpack before the second projection in particular when, in use, the snow tooth is attached to a shaft of the snow tiller and the shaft rotates in the main direction of rotation.

A power-assisted ski track setter including a user control assembly, a track cutter assembly, and a drive assembly configured to operably engage the track cutter assembly is provided. The user control assembly is configured to control the direction of the power-assisted ski track setter. The track cutter assembly comprises a frame, a set of wheels operably coupled to the frame, a set of axles operably coupled to the wheels, and a set of tracks encircling the set of wheels. The set of wheels rotatably supports the frame. The drive assembly is configured to be mounted adjacent to the frame. The drive assembly comprises a motor configured to transmit power to the track cutter assembly, a battery electrically connected to the motor, and a drive gear operably coupled to the motor.

A power-assisted ski track setter including a user control assembly, a track cutter assembly, and a drive assembly configured to operably engage the track cutter assembly is provided. The user control assembly is configured to control the direction of the power-assisted ski track setter. The track cutter assembly comprises a frame, a set of wheels operably coupled to the frame, a set of axles operably coupled to the wheels, and a set of tracks encircling the set of wheels. The set of wheels rotatably supports the frame. The drive assembly is configured to be mounted adjacent to the frame. The drive assembly comprises a motor configured to transmit power to the track cutter assembly, a battery electrically connected to the motor, and a drive gear operably coupled to the motor.

A winch assembly including a winch control device coupled to an actuator assembly to control a winding and unwinding of a cable and configured to provide a first control signal indicative of a desired pump pressure of the actuator assembly and/or the second control signal indicative of a desired pump displacement of the actuator assembly, and determine the first control signal and/or the second control signal based on: a measured travel speed signal indicating the measured travel speed of a tracked vehicle; a measured pressure signal indicative of a measured pressure in a high pressure branch of a hydraulic circuit of the actuator assembly; and one or more signals of: rope speed signal, wound rope length signal, desired pull force signal manually set by an operator, measured angle signal of an arm of the winch assembly with respect to a travel direction.

A computer-aided method for maintaining a snow piste, according to which state data relating to the snow piste are captured in a time-dependent manner. The state data include snow constitution data which depend on a constitution of a piste surface of the snow piste, a prediction model for the state of the snow piste at at least one point in time in the future is calculated from the captured state data, and information relating to the prediction model is output.

A pull-behind device to resurface an ice rink. The device includes a rotating brush to sweep the ice anterior to a blade used to the scrape the ice. Collected snow is moved into a water reservoir where it is stored and melted for redeposit onto the skating surface.

A modular assembled artificial skating rink includes a refrigerating system, a plurality of liquid-supply main pipes and air-return main pipes in the same pipe line as the liquid-supply main pipes. The liquid-supply main pipes communicate with a liquid-supply header pipe. The air-return main pipes communicate with an air-return header pipe. The liquid-supply header pipe communicates with a refrigerant-fluid outlet of the refrigerating system through at least a liquid-supply standpipe. The air-return header pipe communicates with an air-recovery end of the refrigerating system through at least an air-return standpipe. Each liquid-supply main pipe is sheathed in a corresponding air-return main pipe, forming a plurality of groups of sleeve main pipes. The artificial skating rink is divided into different modular regions. Each of the regions has sleeve manifolds and ice-making pipes. Each liquid-supply main pipe has a refrigerant-fluid control valve bank, and each air-return main pipe has an air control valve bank.

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.