Injector Directs Material Onto Stirrer Patents (Class 366/172.2)
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Patent number: 11391155Abstract: In one aspect, a method for performing in situ repairs of internal components of a gas turbine engine may generally include inserting a repair tool within an interior of the gas turbine engine such that a tip end of the repair tool is positioned within the gas turbine engine and an exterior end is positioned outside the gas turbine engine. The method may also include positioning the tip end of the repair tool adjacent to a defect of an internal component, wherein the defect defines a fillable volume along a portion of the internal component. In addition, the method may include intermixing two or more constituents of a repair agent within the repair tool at a mixing location defined within the gas turbine engine, and expelling the repair agent from the tip end such that the fillable volume is at least partially filled with the repair agent.Type: GrantFiled: October 16, 2020Date of Patent: July 19, 2022Assignee: General Electric CompanyInventors: Herbert Chidsey Roberts, Nicholas Edward Antolino
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Patent number: 8985840Abstract: Mixing apparatus and methods for the continuous production of monomer emulsions that may be used in the production of polymer dispersions by radical aqueous emulsion polymerization. The mixing apparatus can include a pipe-in-pipe injector (100) and a suitable rotor-stator mixer (102). Liquids are delivered to the rotor-stator mixer via an inner (110) and an outer (108) pipe in such a way as to substantially prevent feed inconsistencies in a feed ratio of the liquids prior to entering a mixing zone of the rotor-stator mixer for emulsion formation.Type: GrantFiled: June 24, 2009Date of Patent: March 24, 2015Assignee: Dow Global Technologies LLCInventors: Kenneth W. Hester, Daniel R. Stanley, Mark S. Riddle, Mark A. Greschaw, Dennis D. Hacker
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Patent number: 8980958Abstract: A method for producing an emulsion is provided. At least a fluid to be processed that forms continuous phase and a fluid to be processed that forms dispersed phase are mixed in a thin film fluid formed between processing surfaces arranged to be opposite to each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, whereby the emulsion having variation coefficient of 0.3 to 30% in a particle size distribution is obtained.Type: GrantFiled: September 11, 2008Date of Patent: March 17, 2015Assignee: M. Technique Co., Ltd.Inventor: Masakazu Enomura
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Patent number: 8944672Abstract: Improved preconditioners (10) are provided for partial moisturization of human food or animal feed ingredients prior to downstream final processing thereof in an extruder (56) or pellet mill. The preconditioner (10) preferably includes an elongated housing (12) having a wall (14) with an inlet (20) and an opposed outlet (22). The housing (12) also has a larger diameter end wall (16) proximal to the inlet (20), a smaller diameter end wall (18) proximal to outlet (22), and a progressively converging housing wall (14) with a taper angle of from about 2-9°. A shaft (36) extends along the length of housing (14) and supports a plurality of outwardly extending mixing elements (46) positioned in axially and circumferentially spaced relationship along the length of the shaft (36). The outer margins (54) of the mixing elements (46) cooperatively define a taper along the length of the housing wall (14).Type: GrantFiled: December 27, 2010Date of Patent: February 3, 2015Assignee: Wenger Manufacturing, Inc.Inventors: Marc Wenger, LaVon Wenger
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Patent number: 8322909Abstract: The present invention provides a mixer for producing a paste by mixing components, comprising a housing having a longitudinal axis, a rear end, and a front end provided with a discharge opening; and a mixing chamber formed in said housing and having an entry side facing said rear end of said housing. The initial content of the mixing chamber is diverted from the discharge opening, and the subsequent content of the mixing chamber is extrudable from the discharge opening.Type: GrantFiled: September 21, 2005Date of Patent: December 4, 2012Assignee: 3M Deutschland GmbHInventors: Jens Gramann, Ingo W. Wagner, Kai R. Huble
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Patent number: 8246822Abstract: An apparatus for treating waste water comprises a mixing chamber including mixing members therein for mixing waste water and treatment chemicals therein and a separating chamber at the outlet of the mixing chamber for separating the flocculated contaminants and to provide a supply of clarified water. In a preferred embodiment, the chemicals are injected at sequential locations along an injection tube for sequential mixing of the chemicals with one another in the injection tube prior to the chemicals being injected and mixed into the mixing chamber for mixing with the waste water.Type: GrantFiled: February 17, 2009Date of Patent: August 21, 2012Inventor: Raymond P. Briltz
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Patent number: 8123394Abstract: A mixer having a mixing pipe (1), a rotatable mixing unit (3) having back-mixing action, and a supply of the liquid colorant (4, 5) through the wall of the mixing pipe in the area of the mixing unit allows uniform mixing of liquid colorants of differing viscosities even with fixed-cycle supply of the liquid colorants. Mixing liquid colorants using this mixer allows direct dosing of the mixed liquid colorant into a plastic processing machine in the event of volumetric dosing of the employed liquid colorants.Type: GrantFiled: October 11, 2006Date of Patent: February 28, 2012Assignee: Evonik Degussa GmbHInventors: Simon Becht, Andreas Kluge, Maurice Weelen, Martin Welp
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Patent number: 8092073Abstract: A tank adapted to be used for suspending separation media slurry before transferring the separation media slurry to a column or a container comprises: an impeller (7) adapted to rotate in order to mix the media slurry, a nozzle (9) provided protruding into the tank from the bottom (8) thereof, and an adjustable pipe (5) having an open end (6) positioned in the tank and which can be adjusted in position. The nozzle (9) and the adjustable pipe (5) are adapted to be connected to a pump (3) adapted to pump liquid from the adjustable pipe (5) when the open end (6) of the adjustable pipe (5) has been positioned in an uppermost liquid phase provided in the tank when the media slurry has started to sediment and pump the liquid, possibly containing a small amount of media, through the nozzle (9) back into the tank from the tank bottom (8) in order to start re-suspending media that has sedimented in the tank.Type: GrantFiled: December 18, 2007Date of Patent: January 10, 2012Assignee: GE Healthcare Bio-Sciences ABInventors: Magnus Asplund, Rolf Hjorth
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Patent number: 7993052Abstract: An agitation method for mixing a solution and a solvent to precipitate a solid substance from the solution. The method includes preparing an agitation mixer including an agitation vessel, an impeller rotated in the agitation vessel, and a feed pipe connected to the agitation vessel and having a multiple pipe structure including an outer pipe and an inner pipe arranged in the outer pipe. A shearing clearance is formed in the agitation vessel between the impeller and the feed pipe. The method further includes shearing the solution and the solvent by rotating the impeller to precipitate the solid substance while feeding the solution and the solvent into the shearing clearance from the outer pipe and the inner pipe.Type: GrantFiled: September 28, 2007Date of Patent: August 9, 2011Assignee: NOF CorporationInventors: Nobuyuki Sakamoto, Kenshiro Shuto, Satoshi Yamada, Hirofumi Irie
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Publication number: 20110182134Abstract: A mixing system is disclosed comprising at least one extensional flow mixer comprising: a generally open and hollow body having a contoured outer surface and having: a single entrance port and a single exit port; a means for compressing a bulk stream flowing through the generally open and hollow body in a direction of flow and at least one injected additive stream introduced at the single entrance port in the direction of flow; and a means for broadening the bulk stream and the at least one injected additive stream such that an interfacial area between the bulk stream and the at least one injected additive stream is increased as the bulk stream and the at least one injected additive stream flow through the generally open and hollow body in the direction of flow to promote mixing of the bulk stream and the at least one injected additive stream, a flow conductor having an axis and having a generally open and hollow flow mixer body secured therein; and a primary additive stream injector positioned at the entraType: ApplicationFiled: January 22, 2010Publication date: July 28, 2011Applicant: Dow Global Technologies Inc.Inventors: Maria Pollard, Steven R. Strand, David A. Eversdyk, Matthias Schaefer
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Patent number: 7883263Abstract: Improved preconditioners (10) are provided for partial moisturization of human food or animal feed ingredients prior to downstream final processing thereof in an extruder (56) or pellet mill. The preconditioner (10) preferably includes an elongated housing (12) having a wall (14) with an inlet (20) and an opposed outlet (22). The housing (12) also has a larger diameter end wall (16) proximal to the inlet (20), a smaller diameter end wall (18) proximal to outlet (22), and a progressively converging housing wall (14) with a taper angle of from about 2-9°. A shaft (36) extends along the length of housing (14) and supports a plurality of outwardly extending mixing elements (46) positioned in axially and circumferentially spaced relationship along the length of the shaft (36). The outer margins (54) of the mixing elements (46) cooperatively define a taper along the length of the housing wall (14).Type: GrantFiled: August 30, 2010Date of Patent: February 8, 2011Assignee: Wenger Manufacturing, Inc.Inventors: Marc Wenger, LaVon Wenger
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Patent number: 7806584Abstract: A diffuser provides the ability to diffuse one or more infusion materials into a host material. A rotor and stator rotate relative to one another. The infusion materials are drawn through openings in the rotor and stator. These openings are also causing turbulence within the host material, which is flowing through an area between the rotor and stator. As aligned openings pass one another, succussion occurs, which provides energy to diffuse the infusion materials into the host material to an extremely high degree. The opening patterns in the rotor and stator can be designed to operate at a single frequency or at multiple frequencies. The frequencies of operation may affect bonding between the infusion materials and the host material and may also be effective in break down of complex molecular structures.Type: GrantFiled: April 15, 2002Date of Patent: October 5, 2010Assignee: Revalesio CorporationInventors: Norman L. Wootan, Anthony B. Wood
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Patent number: 7690834Abstract: The present invention provides a mixer and a mixing method which enable stable supply of slurry at a high flow rate with foam being uniformly mixed therein, and which enable reduction in consumption of foam to be fed to the slurry. The mixer (10) has a housing (20), a rotary disc (32), a slurry outlet port (45), a slurry delivery conduit (46) and a hollow connector section (47). A foam feeding port (41) is disposed in a predetermined position of an annular wall or the hollow connector section. The foam feeding port feeds the foam to the slurry, immediately before the slurry enters the slurry outlet port, or feeds the foam to the slurry in the hollow connector section. The slurry and the foam mix with each other at the slurry outlet port or on its downstream side. The foam is not substantially subjected to agitation impact of the mixer and a quantity of loss of the foam is reduced.Type: GrantFiled: May 21, 2004Date of Patent: April 6, 2010Assignee: Yoshino Gypsum Co., LtdInventors: Wataru Nakamura, Yuichi Hirooka
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Patent number: 7674033Abstract: The invention relates to a dynamic mixer for mixing at least two paste components of different volume proportions. Said mixer comprises a housing with at least two inlet openings and at least one outlet opening, a mixer element being rotatably mounted in a mixing chamber of said housing. The housing has at least one delay chamber comprising a limiting wall that blocks the paste stream in the direction of flow and at least one opening that opens into the mixing chamber, said opening(s) being set back in relation to the limiting wall. The mixer is particularly suitable for mixing paste components with a relatively high viscosity of, for example, greater than 800 Pas.Type: GrantFiled: October 29, 2007Date of Patent: March 9, 2010Assignee: 3M ESPE AGInventors: Helmut Pauser, Ingo Wagner
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Patent number: 7549788Abstract: In a fluid mixing apparatus and a fluid mixing system including the apparatus, a micro-reactor has a plate sandwiched by a lid member and a receiving member. In the plate, a plate through hole, a slit cylindrical through hole, and an outer layer channel are formed, and three fluids flowing in the lid member are allowed to flow out in the same direction, respectively. Further, in the micro-reactor, the receiving member having a mixing channel having an outer periphery in the same form as an outermost periphery of the outer layer channel is provided detachably to the plate.Type: GrantFiled: April 26, 2004Date of Patent: June 23, 2009Assignee: FUJIFILM CorporationInventors: Takayuki Fujiwara, Mamoru Fujisawa
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Patent number: 7478944Abstract: A soil mixing apparatus for mixing soil and a media. The apparatus comprises a housing having a rotatable auger mounted longitudinally within the housing. The housing is provided with a first lower end, an intermediate section and a second raised end, the second raised end raised relative to said first lower end. A hopper is coupled to the first lower end of the housing so that the rotatable auger extends into the hopper for moving the soil toward the second raised end. A valve apparatus is coupled to the housing at the intermediate section of the housing for introducing the media to the soil as the soil is moved from the hopper to the second raised end. The rotatable auger is provided with a series of spaced flites so that the soil can be moved from the first lower end through the intermediate section and to the second raised end. An inlet water supply allows water to be introduced at the intermediate section. A treatment inlet supply allows an additive to be added to the soil at the intermediate section.Type: GrantFiled: December 20, 2006Date of Patent: January 20, 2009Inventor: Chuck Hull
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Patent number: 7448793Abstract: An emulsion production apparatus comprises a first rotor 9 which is fixed to a rotary hollow shaft 7 to atomize mixture liquid supplied from a mixture liquid pipe 2 at a portion below the mixture liquid pipe 2, an intermediate support body 15 which is disposed above the first rotor 9 and compresses the mixture liquid which has passed through the first rotor 9, and a second rotor 18 which is fixed to the hollow shaft 7 so as to further atomize the liquid which has passed through long holes 16 disposed in the support body 15.Type: GrantFiled: January 23, 2008Date of Patent: November 11, 2008Assignees: Value Supplier & Developer Corporation, Kabushiki Kaisha Fujimi PlantInventor: Keiji Kurosawa
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Patent number: 7384185Abstract: The present invention relates to an apparatus for mixing of a chemical medium in gaseous or liquid state with a pulp suspension. The apparatus comprises a housing having a wall (2) that defines a mixing chamber (4), a first feeder (6) for feeding the pulp suspension to the mixing chamber, a rotor shaft (8, 104, 204, 300, 406, 502), that extends in the mixing chamber, a drive device for rotation of the rotor shaft, a rotor body (10, 200, 407, 504), that is connected to the rotor shaft and arranged to supply kinetic energy to the pulp suspension flow, during rotation of the rotor shaft by the rotation of the drive device, such that turbulence is produced in a turbulent flow zone (12) in the mixing chamber, a second feeder (13) for feeding of the chemical medium to the mixing chamber, and an outlet for discharging the mixture of chemical medium and pulp suspension from the mixing chamber.Type: GrantFiled: December 8, 2003Date of Patent: June 10, 2008Assignee: Metso Paper, Inc.Inventors: Olof Melander, Peter Danielsson, Tomas Wikström
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Patent number: 7320541Abstract: The present invention relates to a mixer element for a mixer for producing a paste by mixing components, the mixer comprising a mixing chamber. The mixer element comprises a body portion comprising a longitudinal axis extending from a rear end to a front end of the body portion, mixing vanes or blades provided at the body portion, and closure elements for closing the inlet openings to the mixing chamber. The closure elements are arranged at the rear end of the body portion adjacent to the inlet openings, and provide a paste-tight closure.Type: GrantFiled: August 11, 2004Date of Patent: January 22, 2008Assignee: 3M ESPE AGInventors: Ingo W. Wagner, Helmut Pauser
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Patent number: 7287898Abstract: The invention relates to a dynamic mixer for mixing at least two paste components of different volume proportions. Said mixer comprises a housing with at least two inlet openings and at least one outlet opening, a mixer element being rotatably mounted in a mixing chamber of said housing. The housing has at least one delay chamber comprising a limiting wall that blocks the paste stream in the direction of flow and at least one opening that opens into the mixing chamber, said opening(s) being set back in relation to the limiting wall. The mixer is particularly suitable for mixing paste components with a relatively high viscosity of, for example, greater than 800 Pas.Type: GrantFiled: March 6, 2002Date of Patent: October 30, 2007Assignee: 3M ESPE AGInventors: Helmut Pauser, Ingo Wagner
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Patent number: 7172336Abstract: An oil phase solution injected into a mixing flow path from an upstream injection inlet forms a flow from an upstream injection inlet to a discharge outlet, and a rotary blade is provided downstream of a mechanical seal. Thus, a reverse flow toward a mechanical seal of a polyvalent isocyanate and a polyol injected from an inlet downstream with respect to the mechanical seal tends not to take place. A separating film member is provided to prevent the chemical solutions flowing in the mixing flow path from coming into contact with a pressing means, which is for pressing a seal ring member of the mechanical seal against a rotation ring member. A reaction product is not adhered to the pressing means of the mechanical seal, which would decrease the pressing force, and leakage of the liquid from the mechanical seal can be effectively prevented.Type: GrantFiled: April 29, 2004Date of Patent: February 6, 2007Assignee: Fuji Photo Film Co., Ltd.Inventors: Nozomu Chikami, Kenichi Shinohara
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Patent number: 6869213Abstract: A new and unique inline mixer and process pipe combination includes an inline mixer with a casing and a rotor arranged therein. The casing has one or more stationary vanes and an inlet connected to a process pipe configuration. The rotor has one or more rotary vanes that rotate on an axis of rotation in the casing. The process pipe configuration includes a chemical injection pipe having a slotted injection pipe arranged therein having an outer surface with a long narrow slot therein oriented substantially parallel to the axis of rotation of the rotor for injecting a chemical into a process flow media flowing in the process pipe configuration. The long narrow slot is located on a downstream side of the outer surface and oriented in a plane parallel to the direction of flow of the process media.Type: GrantFiled: July 17, 2002Date of Patent: March 22, 2005Assignee: ITT Manufacturing Enterprises, Inc.Inventor: Charles A. Cappellino
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Publication number: 20040013032Abstract: A new and unique inline mixer and process pipe combination includes an inline mixer with a casing and a rotor arranged therein. The casing has one or more stationary vanes and an inlet connected to a process pipe configuration. The rotor has one or more rotary vanes that rotate on an axis of rotation in the casing. The process pipe configuration includes a chemical injection pipe having a slotted injection pipe arranged therein having an outer surface with a long narrow slot therein oriented substantially parallel to the axis of rotation of the rotor for injecting a chemical into a process flow media flowing in the process pipe configuration. The long narrow slot is located on a downstream side of the outer surface and oriented in a plane parallel to the direction of flow of the process media.Type: ApplicationFiled: July 17, 2002Publication date: January 22, 2004Applicant: ITT Manufacturing Enterprise, Inc.Inventor: Charles A. Cappellino
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Patent number: 6513965Abstract: An apparatus and method for mixing at least two reactants is taught wherein a first reactant is delivered to a reaction zone through a first annular flow path and a second reactant is delivered to the reaction zone through a second annular flow path. The first and second annular flow paths are concentric with one another and the two reactants intermix with one another in the reaction zone. There is a rotating disc having a surface, defining one boundary of the reaction zone. The flow of the first and second reactants across the rotating disc and through the reaction zone is generally radial and has a residence time in the reaction zone of not more than about 100 msec, and preferably not more than about 50 msec. The reaction zone resides in a main reactor vessel and there is a driven agitator residing in the main reactor vessel to stir the contents thereof.Type: GrantFiled: November 6, 2001Date of Patent: February 4, 2003Assignee: Eastman Kodak CompanyInventors: Dirk J. Hasberg, Rajesh V. Mehta, Michael Bryan, Ramesh Jagannathan
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Patent number: 6443611Abstract: An apparatus and method for mixing at least two reactants is taught wherein a first reactant is delivered to a reaction zone through a first annular flow path and a second reactant is delivered to the reaction zone through a second annular flow path. The first and second annular flow paths are concentric with one another and the two reactants intermix with one another in the reaction zone. There is a rotating disc having a surface, defining one boundary of the reaction zone. The flow of the first and second reactants across the rotating disc and through the reaction zone is generally radial and has a residence time in the reaction zone of not more than about 100 msec, and preferably not more than about 50 msec. The reaction zone resides in a main reactor vessel and there is a driven agitator residing in the main reactor vessel to stir the contents thereof.Type: GrantFiled: December 15, 2000Date of Patent: September 3, 2002Assignee: Eastman Kodak CompanyInventors: Dirk J. Hasberg, Rajesh V. Mehta, Michael Bryan, Ramesh Jagannathan
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Patent number: 6435707Abstract: Continuous mixing apparatus provide rapid production of a mixture of high uniformity, low viscosity, low density, high stability after mixing, without an increase in amounts of subsequently supplied liquids. Continuous production of liquid or liquid containing mixtures consists of (i) continuously loading the apparatus casing with materials of different types which are flowable such as different liquids or a powder and a liquid, (ii) mixing the components between independently rotating upper and lower bladed disk turbine impellers to form a coarse mixture, and (iii) mixing the coarse mixture with an additional portion of a liquid being continuously supplied to the casing. The apparatus includes upper and lower bladed disk turbine impellers disposed in a mixing chamber within a casing. The impellers are capable of being rotated independently at different rotational speeds. A plurality of blades are attached to the impellers. Upper and lower ring shaped baffles extend from the inner wall of the casing.Type: GrantFiled: November 5, 2001Date of Patent: August 20, 2002Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Hideyuki Mori, Toyohiko Yamadera, Mitsuo Hamada
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Patent number: 6431742Abstract: A continous mixing apparatus has an upper rotary disk and a lower rotary disk able to rotate independently of one another. A plurality of scrapers are attached to the upper and lower sides of the upper and lower rotary disks. Scrapers on the lower side of the lower rotary disk have a notch enabling the scrapers to pass over a lower ring plate in the mixer. Material to be mixed is supplied to an upper portion of the mixer, and the product is discharged from a lower portion of the mixer. The device is constructed to enable any subsequently replenished liquids to not rise to the top of the mixing apparatus. The device produces a mixture that is uniform, highly stable, and that has a small particle size or a low viscosity which can be manufactured quickly.Type: GrantFiled: July 31, 2001Date of Patent: August 13, 2002Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Hideyuki Mori, Atsushi Komatsu, Makoto Kokubun, Toyohiko Yamadera, Mitsuo Hamada
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Publication number: 20020101783Abstract: An apparatus and method for mixing at least two reactants is taught wherein a first reactant is delivered to a reaction zone through a first annular flow path and a second reactant is delivered to the reaction zone through a second annular flow path. The first and second annular flow paths are concentric with one another and the two reactants intermix with one another in the reaction zone. There is a rotating disc having a surface, defining one boundary of the reaction zone. The flow of the first and second reactants across the rotating disc and through the reaction zone is generally radial and has a residence time in the reaction zone of not more than about 100 msec, and preferably not more than about 50 msec. The reaction zone resides in a main reactor vessel and there is a driven agitator residing in the main reactor vessel to stir the contents thereof.Type: ApplicationFiled: December 15, 2000Publication date: August 1, 2002Inventors: Dirk J. Hasberg, Rajesh V. Mehta, Michael Bryan, Ramesh Jagannathan
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Patent number: 6422736Abstract: 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 impeller has pitched blades for macromixing the bulk fluid. The impellers are spaced apart at least the distance of their diameters so that the upper and lower impellers operate independently of one another so that micromixing is independent of macromixing. A flow disrupter structurally associated with the draft tube and positioned above the top impeller prevents vortexing of the fluid during mixing. Baffles may be provided in the draft tube to discourage vortexing.Type: GrantFiled: June 21, 2000Date of Patent: July 23, 2002Assignee: Eastman Kodak CompanyInventors: Michael G. Antoniades, Harold G. Judd, Katrin I. Parsiegla, Benjamin T. Chen, Douglas E. Singer, Donald R. Irwin, Sucheta Tandon, Jess B. Hendricks, III, Heinz E. Stapelfeldt
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Publication number: 20020064086Abstract: Continuous mixing apparatus provide rapid production of a mixture of high uniformity, low viscosity, low density, high stability after mixing, without an increase in amounts of subsequently supplied liquids. Continuous production of liquid or liquid containing mixtures consists of (i) continuously loading the apparatus casing with materials of different types which are flowable such as different liquids or a powder and a liquid, (ii) mixing the components between independently rotating upper and lower bladed disk turbine impellers to form a coarse mixture, and (iii) mixing the coarse mixture with an additional portion of a liquid being continuously supplied to the casing.Type: ApplicationFiled: November 5, 2001Publication date: May 30, 2002Inventors: Hideyuki Mori, Toyohiko Yamadera, Mitsuo Hamada
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Publication number: 20020012287Abstract: A continuous mixing apparatus in which subsequently replenished liquid does not rise to the top of the mixing apparatus, and a mixture that is uniform, highly stable, and has either a small particle size or a low viscosity, can be manufactured quickly.Type: ApplicationFiled: July 31, 2001Publication date: January 31, 2002Inventors: Hideyuki Mori, Atsushi Komatsu, Makaoto Kokubun, Toyohiko Yamadera, Mitsuo Hamada
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Patent number: 6290386Abstract: The present invention relates to a mobile apparatus for the production of water based liquid paints from pulverulent constituents and water. The apparatus comprises a traveling frame, a mixing container, a mixing unit for mixing the pulverulent constituents and water, a metering unit for metering the pulverulent constituents into the mixing container, and a switching unit for controlling the metering and the mixing. The dissolver comprises a shaft and a dissolver disc having a ratio d/D of the diameter d of the dissolver disc to the diameter D of the mixing container of about 0.3 to 0.5, with the shaft being dimensioned so that during the mixing operation, the dissolver disc can be lowered to a distance b from the bottom of the mixing container of about 0.3 d to about 0.7 d.Type: GrantFiled: October 4, 1999Date of Patent: September 18, 2001Assignee: Wacker-Chemie GmbHInventors: Horst Baumgartl, Detlev Berner