Abstract: Primarily crushed flaky or platy pieces of ice are supplied from a supply port into a rotary blade casing of a high speed rotary snow producing and throwing apparatus toward a rotor blade in the shaft direction of a rotating shaft by strong discharge pressure of a forced blast, crushed into pieces with smaller and finer particle size through second crushing by the rotor blade rotating at high speed, and sent out from a delivery port nearly in the direction of a tangent of the rotational outer periphery of the rotor blade.

Abstract: The present invention provides a system capable of accurately monitoring each of a plurality of snowmakers of ice crushing type which are placed on a skiing ground. The system has a monitoring device, which is placed in a monitoring station of the skiing ground and is connected to each of the snowmakers for monitoring an operational state of each of the snowmakers. The system further includes an external monitoring device provided in an external monitoring station located in a remote place from skiing grounds. The external monitoring device is capable of monitoring an operational state of each of the snowmakers in a selected skiing ground, since it can be selectively connected to the monitoring device placed in each skiing ground.

Abstract: Skiing facilities, which supply artificial snow onto the ski slope floor to form a ski slope, the skiing facilities, comprises a movable ski slope floor provided in a part of the ski slope floor along a width direction, a movable floor driving mechanism, which is provided under the ski slope floor, for driving the movable ski slope floor in up and down directions, a cover member, which is provided under the ski slope floor, for covering a gap generated between the movable ski slope floor and the ski slope floor when the movable slope floor is driven, and a cover member driving mechanism, which is provided under the ski slope floor, for closing a gap generated between the movable ski slope floor and the ski slope floor by driving the cover member.

Abstract: In skiing ground facilities having a plurality of artificial snow manufacturing apparatuses of ice crushing type, this invention provides a system that is capable of precisely monitoring the respective artificial snow manufacturing apparatuses. This system comprises a monitoring apparatus, connected to the artificial snow manufacturing apparatus, for monitoring the operation state of each artificial snow manufacturing apparatus. This system has an outer monitoring apparatus, which is provided at an outer monitoring site positioned at a location away from the skiing ground, and is selectively connected to the monitoring apparatus provided at each skiing ground, whereby making it possible to monitor the operation state of each artificial manufacturing apparatus of each skiing ground.

Abstract: A system and method for maintaining a desirable depth of snow on a ski slope, on which a plurality of snowmaking apparatuses are stationed to produce artificial snow. The system and method obtain the position of a snow compressing vehicle, and calculate the snow depth at the point by comparing the snow compressing vehicle's position against geographical information when there is no snow. The system and method evaluate the necessity for supplementing snow at the point, and output the necessary amount of snow for the point via the snowmaking apparatuses. Based on the need for supplementing snow at each point, the system further calculates an operating rate suitable for each snowmaking apparatus to achieve optimum efficiency.

Abstract: A facility including an inclined plane for sliding for which snow is used, a snow producing apparatus for producing snow from water and supplying the snow to the facility, and an air jet apparatus for forming an air roof by air flow so that the air roof covers space over the facility, are provided. The air roof covers space over the facility for which artificial snow is used, thus making the building of a roof and the like unnecessary and lowering building costs. The inside of the facility is opened to the fresh air by stopping the supply of air for forming the air roof, which makes special equipment for measures against exhaust gas unnecessary.

Abstract: A system comprises a facility for which snow is used, a snow producing unit for producing snow from water, and a collection section for collecting meltwater and supplies the collected meltwater to the snow producing unit as water used for producing snow. According to such a system, since snow is again produced from meltwater and used, artificial snow can be supplied to a facility for which artificial snow is used without using a large amount of water.