Abstract: An improved structure for supporting a rotating shaft (22) in a liquid environment is disclosed. The bearing structure (28) has an inner support surface or smooth face (38) inwardly disposed and circumferentially engaging the rotating shaft (22). The smooth face (38) has a spiraling channel (46) formed therein, and the channel (46) extends from a first axial end of the bearing (28) which is open to the liquid environment, through some axial portion of the bearing (28) to introduce ambient liquid to lubricate the interface between the bearing (28) and that portion of the shaft (22) which it engages.

Abstract: A method for treating water is disclosed. The method is applicable for the treatment of waste water within lagoons and ponds wherein the treatment of the waste water is accomplished mainly through aeration.

Abstract: PCT No. PCT/US79/00224 Sec. 371 Date April 10, 1979 Sec. 102(e) Date April 10, 1979, PCT Filed April 10, 1979. An apparatus (10, 212) for mixing a gas and a liquid is disclosed. The apparatus is comprised of a hollow outer housing (22) and a hollow inner tube (24) received for rotary motion within the outer housing (22). A motor (61) is attached to the outer housing (22) adjacent a first end thereof and is drivingly coupled to a first end of the inner tube (24). The inner tube (24) has a support tube (214) which extends beyond the second end of the outer housing (22). Propeller blades (216) are attached to the support tube (214) for rotation therewith. An inlet (82) is formed in the inner tube (24) for admitting a gas to the hollow interior of the inner tube (24). The support tube (214) has a diffusion section (222) that extends below the propeller blades (216).