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| Number | Title | Issue Date |
| 7473025 | Mixing impeller with spiral leading edge An impeller blade has a flat central disk portion, at least a pair of extensions extending from a central disk portion, and at least two leading edges defined by the outer periphery of the disk portion. Each leading edge spans from one extension to an adjacent exten... | 01/06/2009 |
| 7357567 | Sterile fluid pumping or mixing system and related method A system for pumping or mixing a fluid using a levitating, rotating magnetic element and various other components for use in a pumping or mixing system are disclosed. The magnetic element is placed in a vessel or container that can be positioned in close proximity t... | 04/15/2008 |
| 7334932 | LED-tube hybrid lighting arrangement A lighting arrangement (1) of a space-saving configuration, including a fluorescent lamp (2) and at least one light emitting diode (6), which is suitable in particular for use for interior lighting of an aircraft. In this case the light emitting... | 02/26/2008 |
| 7331704 | Start-up method for draft tube mixing A method for suspending settled solids in a liquid using a mixing assembly having a mixing vessel, draft tube disposed within the mixing vessel and an impeller disposed within the draft tube. The method includes rotating the impeller in a first rotational direction ... | 02/19/2008 |
| 7201884 | Process and apparatus for performing a gas-sparged reaction An improved process, such as a microbiological or enzymatic process, and apparatus, such as an apparatus for producing a cellular product, comprising introducing a gaseous feed stream of at least one gas of low solubility into an aqueous medium containing a microorg... | 04/10/2007 |
| 7192517 | Coal-bed-methane water treatment system A water treatment system for treating coal-bed-methane (CBM) water. The CBM water treatment system includes a pump system for pumping CBM water from one or many CBM wells into a common reservoir and a solid-based sulfurous generator that produces aqueous sulfurous a... | 03/20/2007 |
| 7178979 | Water agitation system for water retention structure A water agitation system configured to be positioned within a water retention structure configured to receive and retain water, includes a housing having a drive shaft extending downwardly therefrom; at least one upright member connected to a cross beam that is conf... | 02/20/2007 |
| 7172337 | Low shear impeller One or more mixing impellers is carried on a driving shaft received in a mixing vessel. Impeller blades are angularly and/or axially distributed on the shaft and can be single staggered axially-spaced blades or groups of two or more placed angularly around the shaft... | 02/06/2007 |
| 7168849 | Agitation apparatus and method for dry solids addition to fluid An agitation system for producing a slurry, mixture, or solution from addition of dry solids to a liquid is provided. A first tank has a first longitudinal axis, a static liquid level, a dynamic liquid level, and a holdup. A solid inlet is configured to feed dry sol... | 01/30/2007 |
| 7168848 | Axial-pumping impeller apparatus and method for magnetically-coupled mixer An impeller apparatus for use with a magnetically coupled mixer includes in one embodiment an axial-pumping impeller spaced axially apart from a driven magnet by a shaft. In another embodiment the impeller apparatus includes an up-pumping impeller spaced axially apa... | 01/30/2007 |
| 7147361 | Methods for injecting dry bulk amendments for water and soil treatment The present invention includes methods for introducing a dry material into a fluid stream in a way that ensures a predictable, highly accurate and consistent application of the material. The invention applies variable amounts of dry material regardless of whether th... | 12/12/2006 |
| 7127919 | Methods and apparatus for homogenizing molten glass The level of precious-metal inclusions in glass products, e.g., glass substrates for liquid crystal displays, is reduced by stirring molten glass in a stir chamber (11) under conditions such that the magnitude of the shear stress τ on the chamber's wall (... | 10/31/2006 |
| 6964511 | Mixing apparatus and method A mixing apparatus including a frame, a housing, and a pair of thrust generators are disclosed. The housing is pivotably mounted to the frame and is movable between a retracted position substantially parallel with the frame and an extended position substantially per... | 11/15/2005 |
| 6447157 | Transportation of soluble solids Disclosed is an agitator assembly which comprises an agitator and means for mounting the agitator assembly on top of a tank. The agitator comprises a shaft, a propeller fixed to one end of the shaft, and means for rotating the shaft to provide an axial di... | 09/10/2002 |
| 6443613 | Method for transporting and delivering substances The invention includes a method of minimizing the delivery cost of a slurry. According to the invention, a mobile tank is incompletely loaded with an at least partially dehydrated component of the slurry. Sufficient room is left in the tank for a diluent ... | 09/03/2002 |
| 6428711 | Purification method by mixing/diffusion of closed water zone and mixing/diffusion apparatus A purification method by mixing and diffusion of a closed water area comprises the steps of sucking bottom layer water and surface layer water, preparing a mixed water by mixing them before discharging, and discharging the mixed water into a water layer h... | 08/06/2002 |
| 6422736 | Scalable impeller apparatus for preparing silver halide grains A mixer for preparing silver halide grains for photographic use has upper and lower impellers housed in a draft tube. The bottom impeller has flat blades for micromixing silver and halide reactants introduced into the bottom of the draft tube. The upper i... | 07/23/2002 |
| 6391628 | Digester with agitator and method for operating an agitator in a digester A digester with an agitator and a method of operating an agitator in a digester can be used, for instance, in agricultural biogas plants and communal clarification plants. The digester with an agitator and the method feature improved mixing of the waste p... | 05/21/2002 |
| 6296384 | Vertical agitating apparatus Provided is a vertical agitating apparatus which can shorten the time of vertically uniform mixing, uniformalize flow rates in the vertical direction, and shorten the time of heat transmission in a deep liquid agitating tank, an agitating tank having a co... | 10/02/2001 |
| 6276826 | Apparatus for transporting and delivering substances The invention includes a transportable tank having an upper region and a lower region and a fluid conduit flow communicating the upper region to the lower region. The fluid conduit has at least one inlet opening in the upper region and at least one outlet... | 08/21/2001 |
| 6276825 | Transportation of soluble solids Disclosed is an agitator assembly which comprises an agitator and means for mounting the agitator assembly on top of a tank. The agitator comprises a shaft, a propeller fixed to one end of the shaft, and means for rotating the shaft to provide an axial di... | 08/21/2001 |
| 6250797 | Mixing impeller system having blades with slots extending essentially all the way between tip and hub ends thereof which facilitate mass transfer An axial flow mixing impeller system for efficient mass transfer by control of size of the bubbles of the fluid which is being dispersed, especially gases and liquids with viscosities greater than the liquid into which dispersion occurs, is obtained by cr... | 06/26/2001 |
| 6250796 | Agitation apparatus with static mixer or swirler means An apparatus for conducting aqueous liquid media includes a plurality of static mixers, a gas distributor assembly with a plurality of nozzles, at least one impeller having blades attached thereto and a plurality of static mixer assemblies having flow gui... | 06/26/2001 |
| 6123448 | Agitator for fixing and/or conveying aggressive liquids and/or liquids containing solids or fibers An agitator includes a drive motor having a shaft projecting through an axial end of a housing and having connected thereto a propeller boss. The propeller boss and housing define a circumferential gap spanned by a circumferentially extending radially out... | 09/26/2000 |
| 6079864 | Horizontal flow generation system A fluid mixing system including a liquid mixing device and method for generating and maintaining a substantially uniform, horizontal velocity profile in a liquid circulation system, such as a plug flow reactor, which requires less horsepower than conventi... | 06/27/2000 |
| 6050720 | Stirring apparatus with coaxial stirring impellers The first agitating impeller and the second agitating impeller, which are arranged in the addition solution mixing chamber dipped in the primary component solution stored in the reaction vessel, are rotated independently from each other in the reverse dir... | 04/18/2000 |
| 6030113 | Mixing apparatus and method for mixing black liquor from cellulose production with ash from flue gases formed from combustion of black liquor A mixing apparatus for mixing black liquor from cellulose production with ash from flue gases which is generated on combustion of black liquor. The mixing apparatus contains a cylindrical tank, a stirrer mechanism having a propeller secured on the upper p... | 02/29/2000 |
| 6000840 | Rotors and stators for mixers and emulsifiers A rotor-stator assembly having a stator and a rotor for mixing and emulsifying materials in which the rotor includes wedge-shaped rotor blades and the stator includes generally V-shaped openings which together impart additional and increased high speed sh... | 12/14/1999 |
| 5964527 | Mixing device A device for mixing a carrier liquid with one or more additives comprising a closed housing with a non-circular cross section and with an inlet and an outlet opening for the liquid and an infeed port for each additive in addition to a mixing gear accommod... | 10/12/1999 |
| 5851066 | Floating mixer A floating mixer which is suitable for use in anoxic processes in wastewater treatment facilities is provided. The mixer includes a float and a motor having an elongated shaft which is carried on the float such that the shaft extends into the body of liqu... | 12/22/1998 |
| 5813837 | Axial-flow impeller for mixing liquids An axial-flow impeller having a maximum blade width less than 20% of the impeller diameter, the pitch angle at the radial position 0.6 is 12°-22°, the width at the tip end portion of the blade is 12-75% of the width at the radial position 0.6, the pitch... | 09/29/1998 |
| 5803601 | Horizontal flow generation system A fluid mixing system including a fluid mixing device and method for generating and maintaining a substantially uniform, horizontal velocity profile in a fluid circulation system, such as a plug flow reactor, which requires less horsepower than convention... | 09/08/1998 |
| 5762417 | High solidity counterflow impeller system A mixing apparatus has a tank for holding a material to be mixed, a drive shaft rotatable in the tank, a radially inner impeller on the drive shaft with blades pitched to produce axial flow of the material in a first direction, and a radially outer impell... | 06/09/1998 |
| 5658076 | Apparatus for storing and handling waste water slurries A method and apparatus for mixing solid and liquid components of a slurry which have settled in a storage tank, suspending the solids in a substantially homogeneous slurry mixture are practiced by directed flow apparatus. A plurality of jet nozzles or pro... | 08/19/1997 |
| 5628563 | Method and system for slurry preparation and distribution A method and apparatus for supplying gypsum slurry of predetermined concentration to a follow-on utilization device, such as an irrigation network. Slurry of a first higher concentration is prepared in a vessel using a vertically arranged mixer with power... | 05/13/1997 |
| 5626423 | Apparatus and method for transporting and agitating a substance An apparatus and method is disclosed for transporting and agitating a substance having solid and liquid constituents. The apparatus includes a mobile wheeled chassis having a pressure vessel mounted thereon. The vessel has a floor and at least one wall wi... | 05/06/1997 |
| 5580168 | Mixing system employing a dispersion tank with venturi input for dissolving water soluble additives into irrigation water A mixing system for dissolving water soluble additive into irrigation water employs a venturi system for introduction of water soluble additive into a water stream for injection into a dispersion tank employing low speed contradirectional impellers. Dispe... | 12/03/1996 |
| 5564828 | Method and device for controlled motion of water in water basins Device for aerating and/or mixing water in a basin, using a means to impart a rotational motion to the water and having guide means (57) which convert the rotational motion into a combined horizontal and vertical motion of the water. Said guide means can ... | 10/15/1996 |
| 5525269 | Impeller tiplets for improving gas to liquid mass transfer efficiency in a draft tube submerged turbine mixer/aerator A vertical draft tube submerged turbine mixer/aerator includes an impeller rotatedly disposed within the draft tube above an aerator. A single tiplet extends downwardly from the lower surface of each impeller blade in proximity to the blade tip for improv... | 06/11/1996 |
| 5454986 | Down-flow batch mixing system Improved mixing effectiveness in the mixing of a gas with a liquid suspension is achieved in a batch mixing system having a mixing tank with a hemi-toroidal tank bottom which extends between a radially inner neck portion of the tank to a radially outer cy... | 10/03/1995 |
