1
Harold G Inhofer, John E De Veau: Aeration propeller and apparatus. Aeration, Merchant Gould Smith Edell Welter & Schmidt, December 23, 1980: US04240990 (37 worldwide citation)

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 t ...


2
Estes James, Laird George A: Aeration septic tank. Aeration Septic Tank Company, June 26, 1973: US3741393 (35 worldwide citation)

A rigid lightweight septic tank construction employs a corrugated tubular shell, corrugated end walls and intermediate bulkheads that separate the tank into three functionally distinct major chambers. A panel extending from an opening formed in one of the bulkheads separates one of the tank chambers ...


3
Daniel J Durda: Apparatus for mixing a gas and a liquid. Aeration, Schuyler Banner Birch McKie & Beckett, December 29, 1981: US04308221 (30 worldwide citation)

An apparatus for mixing a gas and a liquid is disclosed. The apparatus is comprised of a hollow outer tube and a hollow inner tube received coaxially within the outer tube. The inner tube is mounted for rotary motion within the hollow interior of the outer tube. A motor is attached to the outer tube ...


4
Daniel J Durda, John T Quigley: Method for treating water. Aeration, James A Niegowski, July 28, 1981: US04280911 (29 worldwide citation)

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. The method comprises steps of: aerating a bounded body of water with a plurality of propeller ...


5
John R Snyder: Acoustical apparatus. Jet Aeration Company, Woodling Krost Granger & Rust, August 22, 1978: US04108274 (26 worldwide citation)

An apparatus for reducing acoustical pressure in a tubing is disclosed comprising a first molded plastic member having a first support with an orifice extending therethrough and having a first side forming a substantially saucer shaped member. A plurality of first walls are molded into the first mem ...


6
Gary L Wegner, Anne C Goggin: Waste pond liquid circulation system having an impeller and spaced pontoons. Natural Aeration, Wells St John Roberts Gregory & Matkin P S, June 5, 2001: US06241221 (26 worldwide citation)

A waste pond liquid circulator is described in which a plurality of pontoons extend substantially radially from a base and with respect to a central axis passing through the base. A drive mechanism is mounted on the base that is drivingly connected to an impeller for rotating the impeller about the ...


7
John R Snyder: Sewage treatment tank and tube settler. Jet Aeration Company, Woodling Krost Granger and Rust, April 20, 1976: US03951817 (25 worldwide citation)

A sewage treatment tank formed in upper and lower halves which engage each other along a parting line. The tank has an aeration chamber and an outlet chamber which are fluidly connected together at the bottom portion of the tank through an opening and also at the top portion of the tank at the fluid ...


8
Jerard B Hoage, Larry A Messer: Apparatus for aeration without significant agitation to deplete and biodegrade sludge. Sewage Aeration Systems, McKee Voorhees & Sease, October 8, 2002: US06461500 (25 worldwide citation)

An improved method and apparatus for aeration of septic tanks and the like. Because of the interrelationship of the rotating impeller, an air plate and the horsepower of the unit in comparison with the volumetric size of the sludge tank, the unit disperses extremely small reduced pressure microbubbl ...


9
Ronald S Blough, Jerard B Hoage, Larry A Messer: Method for vacuum aeration of septic tanks to provide low pressure microbubbles. Sewage Aeration Systems, Zarley McKee Thomte Voorhees & Sease, June 12, 2001: US06245237 (22 worldwide citation)

An improved method for aeration of septic tanks and the like by drawing atmospheric air into an expansion chamber and from there into agitated sludge to provide low pressure small microbubbles which have long hold times in the sludge material.


10
Richard B Rajendren: Liquid aerating device. Aeration, Schuyler Banner Birch McKie & Beckett, October 11, 1983: US04409100 (22 worldwide citation)

An aerator (2) comprises a motor (10) having a propeller (18). A slotted cage (30) surrounds propeller (18) and prevents marine life from being drawn in to propeller (18). Liquid will be ejected from propeller (18) in a horizontally traveling stream which stream is oxygenated by a draft tube (48) ha ...