Patent ID: 7150239

Claim:
A method of aerating a body of water comprising propelling in the body of water a water pumping arrangement including a sheath having a turning propeller that (a) sucks water from the body into the sheath interior via at least one opening in the sheath, (b) forces the sucked water upwardly and (c) forces the upwardly forced water through another opening in the sheath below the surface of the body of the water so that the water forced through the another opening (i) has speed greater than the speed of the water sucked into the sheath and (ii) causes air bubbles to be induced in the water above the another opening, and causing the sheath to be (a) propelled with sufficient velocity in the body of water and (b) to be positioned below the quiescent surface of a body of water while the sheath is being propelled in the body of water so that the water pumped through the sheath bubbles to and above the quiescent surface of the body of water with sufficient velocity to be aerated.