Abstract: Apparatus for making snow using pressurized water and air wherein a housing is implanted into the earth at a selected location on a ski slope and connected to underground lines for supplying water and air thereto. An elongated extendable bichamberal spray head is slidingly mounted within the housing such that the introduction of pressurized air to the outer chamber of bichamberal spray head via the housing causes the spray head to rise to a predetermined elevation. Introduction of water to inner chamber of the spray head generates snow when the pressurized water is discharged to the atmosphere through the pressurized air. The spray head is stored within the housing when not in use to eliminate any hazard to skiers and the labor required to utilize a portable snowgun.

Abstract: Method and apparatus for making snow wherein water under pressure is introduced into a water receiving passageway within a closed inner housing. The inner housing is mounted within a closed outer housing to define an air receiving passageway therebetween. Concomitantly with the introduction of water into the inner housing, air under pressure is introduced into the air receiving passageway where it is divided into a plurality of laminar flowing columns of air. The water within the water receiving passageway is discharged through a plurality of water discharge orifices with each orifice adapted to discharge a laminar flowing jet stream of water. A plurality of discharge chambers is provided in the outer housing in alignment with the water discharge orifices in the inner housing.

Abstract: A method and apparatus for producing snow which embodies an inner tubular housing mounted within and spaced from a closed outer tubular housing defining a passageway therebetween for receiving air under pressure. Water under pressure is supplied to the inner tubular housing. Longitudinally spaced discharge orifices are provided in a side of the outer tubular housing and the adjacent side of the inner tubular housing with each orifice in the inner tubular housing being in alignment with an adjacent orifice in the outer tubular housing and aiming the stream of water ejected from the inner tubular housing toward the center of the adjacent orifice in the outer tubular housing and into a column of air as the stream of water passes through the adjacent orifice in the outer tubular housing.