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Class Information
Number: 261/91
Name: Gas and liquid contact apparatus > Contact devices > Rotating > Impeller > Dipping
Description: The impellers arranged to dip in a body of liquid in the receptacle.










Sub-classes under this class:

Class Number Class Name Patents
261/92 Horizontal axis 167


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8585023 Apparatus for mixing gasses and liquids Nov. 19, 2013
8459617 Disc assembly of air cleaning humidifier Jun. 11, 2013
8454000 Method and apparatus for controlled aeration of liquid medium in a pipe Jun. 4, 2013
8216456 Water treatment apparatus adaptible to natural water environment Jul. 10, 2012
8196905 Electric milk frother Jun. 12, 2012
8191868 Floating oxygenation circulator platform (OCP) with sub-vortex induction means Jun. 5, 2012
8191869 Method and apparatus for submersible or self contained aeration of liquid medium Jun. 5, 2012
8182237 Rotary system for submerged pumps May. 22, 2012
8172205 Rotating aerator for aquariums and ponds May. 8, 2012
8146893 Apparatus and method for generating and tracing vortices Apr. 3, 2012
8146894 Apparatus for mixing gasses and liquids Apr. 3, 2012
8146895 Apparatus for mixing gasses and liquids Apr. 3, 2012
8109488 Wastewater treatment system and method of using same Feb. 7, 2012
8096531 Method and apparatus for aeration of liquid medium in a pipe Jan. 17, 2012
8079573 Apparatus and method for aerating waste water Dec. 20, 2011
8056887 Apparatus for surface mixing of gasses and liquids Nov. 15, 2011
8011642 Cruising aerator Sep. 6, 2011
7980824 Rotor for a flotation machine Jul. 19, 2011
7942390 Steam humidifier May. 17, 2011
7906017 Water circulation systems for ponds, lakes, municipal tanks, and other bodies of water Mar. 15, 2011
7815172 Wastewater treatment system and method of using same Oct. 19, 2010
7810795 Method and device for the foaming of at least one liquid or viscous substance Oct. 12, 2010
7678266 Integrated water treatment apparatus and methods for natural water improvement Mar. 16, 2010
7661660 Method and apparatus for aeration of a fluid Feb. 16, 2010
7651075 Bubble generator Jan. 26, 2010
7644910 Method of generating micro gas bubble in liquid and gas bubble generation apparatus Jan. 12, 2010
7644909 Apparatus and method for aeration/mixing of water Jan. 12, 2010
7559538 Wastewater treatment system and method of using same Jul. 14, 2009
7531097 Method and apparatus for aeration of liquid medium May. 12, 2009
7427058 Method and apparatus for aeration of liquid medium Sep. 23, 2008
7398963 Apparatus and method for diffused aeration Jul. 15, 2008
7329340 Continuous multistage thermophilic aerobic and aerobic-anaerobic sludge treatment systems Feb. 12, 2008
7322565 Stirring device and process for carrying out a gas-liquid reaction Jan. 29, 2008
7288276 Carbonation system and method Oct. 30, 2007
7264232 Device for foaming a liquid Sep. 4, 2007
7261279 Device for stirring and aerating a liquid in a treatment vessel Aug. 28, 2007
7204476 Speed-increasing machine for water Apr. 17, 2007
7168691 Water resistant aerator system and method Jan. 30, 2007
7163198 Stirring and aerating device for activated sludges Jan. 16, 2007
7156378 Air seal enclosure for an aerator Jan. 2, 2007
7123472 Common pivot arrangement of portable computer Oct. 17, 2006
7121536 Wave generator with oxygen injection for treatment of a body of fluid Oct. 17, 2006
7114707 Carbonation system and method Oct. 3, 2006
7048260 Turbocharged aerator May. 23, 2006
7028992 Aerator with intermediate bearing Apr. 18, 2006
6997444 Radial disc impeller apparatus and method Feb. 14, 2006
6971843 Hydraulic turbine draft tube with enhanced dissolved oxygen Dec. 6, 2005
6896246 Aeration apparatus and method May. 24, 2005
6860631 Surface aeration impeller designs Mar. 1, 2005
6808306 Mixing vessel apparatus and method Oct. 26, 2004

1 2 3 4










 
 
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