Abstract: A fluid-jet emitting machine, particularly a firefighting machine, comprises a fluid-jet emitting device, a transport vehicle, lifting members and a control device. Each lifting member comprises an actuator constrained to the transport vehicle and at least one idler wheel adapted to engage a rail of a track. The actuators are configured to move the respective wheels between a non-operative position, in which the wheels are distanced from the respective rail, and an operative position, in which the wheels are arranged in contact with the respective rail. The control device is operatively associated with the actuators to activate the passage of the wheels from the non-operative position to the operative position so that during movement along a track and in said operative position, the wheels prove to be pressed against the respective rail, exerting a force such as to reduce only part of the pressure exerted by the movement means of the vehicle on the track.

Abstract: A nucleation nozzle for forming freezing nuclei for devices for making artificial snow, starting from a jet of pressurised liquid, comprising a compressed air duct having an inlet opening and an outlet opening. A first stretch of the compressed air duct has a cross section which decreases in the flow direction of the compressed air, from the inlet opening to the outlet opening. The first stretch is followed by a second stretch having a cross section which increases in the flow direction of the compressed air from the inlet opening to the outlet opening. There is provided at least one water duct having an inlet opening and an outlet opening. The water duct is separate from the compressed air duct. The outlet opening of the water duct is positioned close to the outlet opening of the compressed air duct.

Abstract: A fluid-jet emitting machine, particularly a firefighting machine, comprises a fluid-jet emitting device, a transport vehicle, lifting members and a control device. Each lifting member comprises an actuator constrained to the transport vehicle and at least one idler wheel adapted to engage a rail of a track. The actuators are configured to move the respective wheels between a non-operative position, in which the wheels are distanced from the respective rail, and an operative position, in which the wheels are arranged in contact with the respective rail. The control device is operatively associated with the actuators to activate the passage of the wheels from the non-operative position to the operative position so that during movement along a track and in said operative position, the wheels prove to be pressed against the respective rail, exerting a force such as to reduce only part of the pressure exerted by the movement means of the vehicle on the track.

Abstract: Described is a device (1) for emitting a jet of fluid comprising a tubular member (2) having at least one air inlet opening (4) and one air outlet opening (5). Moreover, the device (1) comprises blowing means (6), located inside the tubular member (2) for sucking air from the inlet opening (4) and generating a flow of air coming out of the outlet opening (5); the blowing means (6) comprising a drive unit (7) and an air movement member (8) connected to the drive unit (7). The device (1) also comprises an apparatus (11) having at least one fluid delivery nozzle (12) and an air compression structure (13) connected to the delivery nozzle (12). More specifically, the drive unit (7) is connected to the air compression structure (13) to set it in action and they are both located inside a container (16).

Abstract: Described is a system (1) for controlling an artificial snow making plant (100) having a plurality of snow making apparatuses (101) positioned along a ski run and connected to a communication line (102), comprising a processing unit (2) in data connection with the communication line (102) and being designed for: receiving a status signal (S) from each snow making apparatus (101) representing the quantity of snow currently produced by the relative snow making apparatus (101); comparing the data contained in each status signal (S) with a respective predetermined single snow making value (Pf) to be reached; generating a condition signal (P) of the apparatuses (101) as a function of the comparison; —generating a condition signal P of the ski run as a function of the contents of the condition signal (A) of the apparatuses (101).