Abstract: A structural housing has a generally toroidal part horizontally positioned and having an upwardly inclining lower base extending upward from a circumference to a first generally circular central area and an upwardly inclining upper base extending upward from a circumference equidistantly vertically spaced from the circumference of the lower base to a second generally circular central area equidistantly vertically spaced from the first central area. The lower and upper bases are coaxial. The housing also has a hollow cylindrical part extending upward from the second central area and coaxial with the lower and upper bases. Partitions in the toroidal part of the housing compress air entering the housing between the circumferences of the lower and upper bases and direct the compressed air in a whirlwind manner to the cylindrical part of the housing and thereby greatly increase the force of the air.