Patent ID: 7798784

Claim:
A circulation system for drawing water from the depths of a body of water to the surface for exposure to the atmosphere and creating a circulation pattern in the body of water, said system including a flotation platform, a dish supported slightly below the surface of said body of water in a submerged position, said submerged dish having upper and lower submerged surfaces, an impeller, and a draft tube depending from an annular housing wherein the bottom of the submerged dish is spaced from and above the top of the housing to create a submerged annular opening therebetween extending substantially about a vertical axis and wherein a first portion of the water uplifted through the draft tube by the impeller passes out of the submerged annular opening underneath the submerged lower surface of said submerged dish and a second portion of the uplifted water passes up through the submerged dish and out over the submerged upper surface of the submerged dish.