Stationary Mixing Chamber Patents (Class 366/341)
  • Publication number: 20020097632
    Abstract: This invention relates to methods and apparatus for performing microanalytic and microsynthetic analyses and procedures. The invention particularly provides microsystem platforms for achieving efficient mixing of one or a plurality of fluids on the surface of the platform when fluid flow is motivated by centripetal force produce by rotation.
    Type: Application
    Filed: May 15, 2001
    Publication date: July 25, 2002
    Inventors: Gregory J. Kellogg, Bruce L. Carvalho
  • Publication number: 20020097633
    Abstract: Robust microfluidic mixing devices mix multiple fluid streams passively, without the use of moving parts. In one embodiment, these devices contain microfluidic channels that are formed in various layers of a three-dimensional structure. Mixing may be accomplished with various manipulations of fluid flow paths and/or contacts between fluid streams. In various embodiments, structures such as channel overlaps, slits, converging/diverging regions, turns, and/or apertures may be designed into a mixing device. Mixing devices may be rapidly constructed and prototyped using a stencil construction method in which channels are cut through the entire thickness of a material layer, although other construction methods including surface micromachining techniques may be used.
    Type: Application
    Filed: January 11, 2002
    Publication date: July 25, 2002
    Applicant: NANOSTREAM,INC.
    Inventors: Stephen D. O'Connor, Christoph D. Karp
  • Publication number: 20020074271
    Abstract: Multilevel microfluidic structures and their use are provided for performing operations using electrokinetic or pneumatic force for moving sample components through and between levels. The devices have flow systems comprising microstructures including reservoirs, channels and vias, where each of the levels or lamina has a plurality of microstructures, and where the microstructures may communicate between levels.
    Type: Application
    Filed: October 10, 2001
    Publication date: June 20, 2002
    Inventors: Xiaowen Hu, Mark Harwood, Travis D. Boone, Hilary S. Lackritz
  • Publication number: 20020051406
    Abstract: The present invention is directed to a starting material adjusting apparatus for preparing the starting materials in the form of slurry, wherein no use is made of an agitator which is expensive in its installation cost and troublesome in its cleaning, thereby making it possible to perfectly dissolve the starting materials into solvent, and to obtain homogeneous slurry as a whole, in a short period of time.
    Type: Application
    Filed: March 20, 2001
    Publication date: May 2, 2002
    Inventors: Hiromiti Akimoto, Ryouji Sunama
  • Publication number: 20010055242
    Abstract: A micro-electromechanical system and method for continuous laminar fluid mixing. An embodiment of the invention described in the specification includes a mixing channel, a first delivery channel that is connected to the mixing channel, and a second delivery channel that is connected to the mixing channel. A first pump mechanism produces pulses in the first delivery channel. A second pump mechanism produces pulses in the second delivery channel. The first pulsed fluid stream and the second pulsed fluid stream merge in the mixing channel to form a mixed fluid. The pulses in the fluids operate to distort the interface between the fluids to facilitate diffusion between the fluids.
    Type: Application
    Filed: May 30, 2001
    Publication date: December 27, 2001
    Inventors: Ajay Deshmukh, Dorian Liepmann
  • Patent number: 6332558
    Abstract: A chip feeder for feeding chips stored in bulk in a case thereof, one by one, from a chip-supply portion thereof, the chip feeder including a partition plate which parts an inner space of the case into a plurality of rooms, the partition plate having an opening which extends in a direction intersecting a horizontal plane and which communicates the respective rooms on both sides of the partition plate, with each other, a movable partition member which extends across the opening of the partition plate and which is movable relative to the opening in the direction intersecting the horizontal plane, and a movable-partition-member control device which controls the movable partition member so that a lower portion of the movable partition member sinks in an upper portion of a mass of the chips stored in bulk in the case and an upper portion of the movable partition member projects upward from the mass of the chips.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: December 25, 2001
    Assignee: Fuji Machine Mfg. Co., Ltd.
    Inventors: Akihiro Udagawa, Mamoru Tsuda
  • Patent number: 6332707
    Abstract: An object of the present invention is to provide a kneader capable of improving both of its kneading and mixing functions, irrespective of a horizontal arrangement or a vertical arrangement, with a comparatively simple design not to degrade the workability thereof. To attain the object of the invention, a kneader adapted to knead an object material by passing it through a plurality of irregular passages (22, 23), each having a sectional shape varied, from an inlet port thereof toward an outlet port thereof, comprising a kneader body (20) having a material supply port (20a) at one end thereof, a material discharge port (20b) at the other end thereof and a plurality of irregular passages communicating with the supply port (20a) and the discharge port (20b), and supply means (10) for supplying the object material to the kneader body. The sectional shape of each of the irregular passages (22, 23) of the kneader body (20) is varied progressively from an inlet port (22a) toward an outlet port (22b).
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: December 25, 2001
    Assignee: Maeda Corporation
    Inventor: Kazuie Yamada
  • Patent number: 6331073
    Abstract: An order-changing microfluid mixer comprises an extended microfluidic channel and a chamber structure that provides order-changing functions to microfluid when the microfluid passes through the chanter structure. The order-changing chamber has two openings connected to said microfluidic channel and divides said microfluidic channel into two sections. When a microfluid is driven from one section of the microfluidic channel to the other, the microfluid enters into the order-changing chamber and flows along a first side of the order-changing chamber, whereby portions of the microfluid positioned adjacent to the second side of the order-changing chamber remain unmoved.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: December 18, 2001
    Assignee: Industrial Technology Research Institute
    Inventor: Yung-Chiang Chung
  • Publication number: 20010048637
    Abstract: A microfluidic device and method for improved diffusion between at least two parallel-flowing fluids. A structure for a microfluidic device includes a first inlet channel, a second inlet channel, and at least one outlet channel connected to the first and second inlet channels. A measure of the first inlet channel is smaller than a measure of the second inlet channel, directing a particular cross-sectional flow in the outlet channel that avoids a “butterfly effect” of adverse diffusion. In an outlet channel having at least two fluidic inlets, the chemical or physical properties of parallel-flowing fluids are controlled for diffusion, concentration, extraction or detection of a substance among the fluids.
    Type: Application
    Filed: May 24, 2001
    Publication date: December 6, 2001
    Inventors: Bernhard H. Weigl, Ron Bardell
  • Patent number: 6310113
    Abstract: A method and apparatus for producing superabsorbent foam wherein the method includes forming a reaction mixture comprising a superabsorbent foam forming composition, stirring, and applying mechanical waves to form a superabsorbent foam.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: October 30, 2001
    Assignee: Nova-Sorb Ltd.
    Inventors: Eliezer Reichman, Arkday Skibinsky, Diana Kumin
  • Patent number: 6305835
    Abstract: Apparatus and processes are provided for handling fluids in numerous industrial applications. Materials addition devices, including venturi hoppers, and other eductor assemblies, are joined in compact, horizontal, and/or vertical configurations, with one or more shearing devices, including, high and low velocity shearing devices individually, as well as, a combination high and low velocity shearing device. Pipe and valve configuration allow several alternate paths through or around such assemblies and devices, in alternate directions, including the option to backflow through the high velocity shearing device for the removal of obstructions. In the high velocity shearing devices provided, a special jet insert is provided, along with jet insert installation related apparatus, by which the jet insert is easily retained in, and removed from, the piping in the high velocity shearing device.
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: October 23, 2001
    Inventors: Joseph Daniel Farrar, Jimmy Phillip Lavoie
  • Patent number: 6280615
    Abstract: A fluid mixer includes an elongate mixing chamber having an inlet system at one end for admission of liquid and gas to be intimately mixed by passage through the chamber and an outlet for the mixture at the opposite end, wherein opposed longitudinal sides of the chamber are each defined by a surface of scallop shape having peaks and troughs, with the peaks of the two surfaces being relatively offset so as to cause the liquid and gas entering the chamber to flow along a generally sinuous path through the chamber to create a turbulent flow which promotes intimate mixing. Advantageously a UV source extends within the chamber to sterilize the liquid flowing through the chamber.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: August 28, 2001
    Assignee: Innotech Pty. Ltd.
    Inventors: Laurence Colin Phillips, John Phillip Browne
  • Patent number: 6190034
    Abstract: A micro-mixer is disclosed having at least one mixing point which is connected to an inlet channel arrangement having at least two inlet channels and to an outlet channel arrangement, and a mixing method is disclosed for at least two fluids which are supplied from different directions. With this mixer and method it is intended to achieve a rapid and predeterminable mixing of the fluids. For that purpose, a separating element which extends into a region of the mixing point in which the inlet channels run parallel to one another is provided. By this means the fluids can be kept separate from one another until their flow speeds virtually coincide in respect of value and direction. Only then are they brought into contact with one another.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: February 20, 2001
    Assignee: Danfoss A/S
    Inventors: Claus Rye Nielsen, Jens Anders Branebjerg, Peter Gravesen, Poul Dyhr-Mikkelsen, Niels Gade
  • Patent number: 6186660
    Abstract: Microfluidic devices, systems and methods of using same which incorporate channels where some portion or all of the channels have aspect ratios less than 1. Devices with such channel dimensions are optionally configured to provide uniform flow rates through the channels.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: February 13, 2001
    Assignee: Caliper Technologies Corp.
    Inventors: Anne R. Kopf-Sill, John Wallace Parce
  • Patent number: 6106146
    Abstract: The invention relates to a method for mixing and/or thermal homogenization of at least one free-flowing fluid of plastic and/or natural substances, in which the fluid is distributed into a layer (34), the width (36) of which transversely to the conveyance direction (35) of the fluid is greater by a multiple than its thickness (33), and individual partial areas lying in the conveyance direction (35) of the fluid adjacent to one another, in cross-sectional planes in succession in the conveyance direction (35) and aligned vertically to the conveyance direction (35), have a different cross-sectional surface. Respective partial areas extending parallel in the conveyance direction (35) and directly adjacent to one another of the cohesive layer (35) are differently spatially deformed and a cross-sectional surface in the partial area is greater than in relation to a greater flow path length between two cross-sectional planes with a rectilinear connection in the conveyance direction (35).
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: August 22, 2000
    Assignee: C.A. Greiner & Sohne Gesellschaft m.b.H.
    Inventors: Gunter R. Langecker, Purstinger Franz
  • Patent number: 6102562
    Abstract: An assembly providing a removable tapered insert for a particulate material container. A plurality of annularly spaced flat brackets are supported on and project inwardly of the container. The insert has tapered upper edge projections and is rotatable for vertical engagement with projections formed on the inner edges of the brackets. A cylindrical support ring may be provided to rest on notches formed on the inner edges of the brackets, and when fully assembled the insert may rest on the support ring for full annular support by the ring. Locking washers may be provided to prevent disengagement of the projections on the insert and brackets.
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: August 15, 2000
    Assignee: Jenike & Johanson, Inc.
    Inventor: Eric Bengtson
  • Patent number: 6093287
    Abstract: A magnetic processing treatment facility is disclosed for subjecting a fluid flow to magnetic energy. The facility is integrated into agricultural spray apparatus and is effective in increasing the water solubility of chemical agents such as herbicides, pesticides, fertilizer, nutrient liquids and other liquids for agricultural use that are dispersed as a spray solution over an application area. The magnetically treated chemical solution also exhibits enhanced activity in terms of crop growth and pesticide and weed control. The treatment facility utilizes a magnetic core device having a resident permanent magnet for generating a magnetic field that is applied to a fluid volume passing through the device.
    Type: Grant
    Filed: February 23, 1998
    Date of Patent: July 25, 2000
    Assignee: Superior Manufacturing Division, Magnatech Corporation
    Inventor: Charles H. Sanderson
  • Patent number: 6076809
    Abstract: A fluid mixing apparatus for mixing a first fluid with a second fluid and to prevent acoustic hammer effects, utilizing a condensing tube array. In accordance with one embodiment of the invention, a direct steam injection process heater is provided, having a first body for introducing a first fluid, generally a liquid or slurry, a second body for introducing a second fluid, generally steam, an orifice plate disposed between the two bodies, and a valve member for movement to and away from the orifice plate. The orifice plate has a plurality of frusto-conical holes which are engaged preferably by an equal number of complementary-configured, conically-tipped pins mounted onto the valve member. An actuator moves the valve member relative to the orifice plate such that the pins penetrate and partially or wholly obscure the holes, thus regulating the flow of the second fluid through the holes.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: June 20, 2000
    Assignee: Q Jet DSI, Inc.
    Inventors: Richard D. Cummins, Jack A. Perry
  • Patent number: 6036356
    Abstract: An in-situ CMP slurry mixing apparatus. The apparatus comprises a tubular main body and a plurality of tapered plugs. The tubular main body further comprises a plurality of first tubes with a first diameter, a plurality of second tubes with a second diameter. Each tapered plug is placed in each second tube, the tips of each tapered plug are pointed in the same direction, and the tips are each oriented opposite to a flowing direction of a CMP slurry. In addition, the second diameter is larger than the first diameter, and a diameter of the base of each tapered plug is larger than the first diameter but is smaller than the second diameter.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: March 14, 2000
    Assignee: United Microelectronics Corp.
    Inventors: Ming-Sheng Yang, Chien-Hsin Lai, Chia-Jui Chang, Juan-Yuan Wu
  • Patent number: 6004024
    Abstract: The present invention is directed to a polymer feed system and a method of using the same wherein clogging of the polymer input line is avoided by the use of air to purge the system of any unwanted polymer or electrolyte. The purging avoids the contact of the water with the polymer and the build-up of unwanted activated polymer and clogging in the supply and in the subsequent conduits.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: December 21, 1999
    Assignee: Calgon Corporation
    Inventors: Bosco P. Ho, Lawrence J. Mahr
  • Patent number: 5979807
    Abstract: The process is implemented in a plant which comprises a homogenising apparatus (1) consisting of a first vertical container (10) having axial stirring devices (11) and peripheral stirring devices (12) with independently actuated blades (15), and grinding apparatus (3) comprised of an external static cylindrical body (21) with centripetally projecting stubs (24) and wherein is housed an internal rotary cylindrical body (25) provided with centrifugally projecting stubs (24); a continuous mixter (4) of which the internal surface (28) has crossing furrows (29) and wherein is housed a cylindrical body (34) of which the external surface (30) has second furrows which also cross each other, so that all the furrows form conduits which initiate in an extreme chamber (31) and which terminate in an extreme chamber (32) for the outflow of fluids resulting from produced mixtures; and a nozzle (5) for supplying the fine fluid paste, said nozzle being comprised of a main tubular body (33) having on the one hand an extreme an
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: November 9, 1999
    Inventor: Carlos Fradera Pellicer
  • Patent number: 5957579
    Abstract: The present invention is generally directed to improved microfluidic devices, systems and methods of using same, which incorporate channel profiles that impart significant benefits over previously described systems. In particular, the presently described devices and systems employ channels having, at least in part, depths that are varied over those which have been previously described. These varied channel depths provide numerous beneficial and unexpected results.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: September 28, 1999
    Assignee: Caliper Technologies Corp.
    Inventors: Anne R. Kopf-Sill, John Wallace Parce
  • Patent number: 5938982
    Abstract: A device for fining bubbles of gas contained in liquid includes at least two flow channel members confronting each other to form a flow channel therebetween. An inlet and an outlet are provided on one side and the other side of the flow channel members. A recess surface including a first recess and a second recess is formed on at least one of confronting surfaces of the flow channel members. The first recess and the second recess extend from the inlet to the outlet, respectively, and intersect each other at plural positions where the flow of the liquid premixed with gas in the first recess collides with that in the second recess.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: August 17, 1999
    Inventor: Eiichi Sugiura
  • Patent number: 5914047
    Abstract: A biohazardous liquid medical waste collection and treatment system provides on-site collection and treatment of surgical fluids. The system is mobile, and includes an upper unit and one or more lower units that are detachable from the upper unit. The upper unit includes a liquid disinfectant reservoir, liquid pump valves, and an electronic control unit which controls the operation of the pump valves. A disposable suction canister is mounted to the upper unit and collects liquid medical waste aspirated from a patient. A disposable tube set, including a motionless mixer, is connected to the disposable suction canister and the liquid disinfectant reservoir. Electronically controlled pumps (preferably peristaltic pumps) pump liquid waste from the suction canister along with the metered amount of liquid disinfectant from the liquid disinfectant reservoir through the motionless mixer and into a temporary storage receptacle on the lower unit.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: June 22, 1999
    Assignee: Grifco, LLC
    Inventor: Gerald R. Griffiths
  • Patent number: 5859077
    Abstract: A method and apparatus for producing a superabsorbent foam is provided. The method includes forming a reaction mixture comprising at least one compound capable of forming a superabsorbent foam, stirring the reaction mixture, applying mechanical waves to the reaction mixture and repeating the stirring and applying a selected number of times thereby forming the superabsorbent foam.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: January 12, 1999
    Assignee: Nova-Sorb Ltd. Novel Absorbents
    Inventors: Eliezer Reichman, Arkady Skibinsky, Diana Kumin
  • Patent number: 5855857
    Abstract: Apparatus (1) for sterilization and/or heat treatment of products in particle form, e.g. bone meal, and comprising an upright-standing pressure vessel (2) with elevator arrangement (6) which lifts the meal from the bottom area (5) to the top area (4), and lets it fall back to the bottom area for re-lifting.The processing is effected by direct steam supply (16), whereby the meal is heated to sterilization temperature.After the treatment or the sterilization, the vessel is emptied by the opening of a bottom valve (10). During the whole of the process, i.e. during filling, sterilization and emptying, the elevator arrangement (6) is in operation.The elevator arrangement is, for example, a helical vibration elevator firmly built into the vessel and with external vibration motors (8), so that the whole of the vessel is made to vibrate.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: January 5, 1999
    Assignee: Atlas-Stord Denmark A/S
    Inventor: Lars Dithmer
  • Patent number: 5842787
    Abstract: The present invention is generally directed to improved microfluidic devices, systems and methods of using same, which incorporate channel profiles that impart significant benefits over previously described systems. In particular, the presently described devices and systems employ channels having, at least in part, depths that are varied over those which have been previously described. These varied channel depths provide numerous beneficial and unexpected results.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: December 1, 1998
    Assignee: Caliper Technologies Corporation
    Inventors: Anne R. Kopf-Sill, John Wallace Parce
  • Patent number: 5820256
    Abstract: An apparatus for uniformly mixing two or more liquids. The apparatus includes a water inlet having a flow orifice for controlling flow rate and pattern. A second fluid to be mixed with the water is injected downstream of the water orifice an opposite direction resulting in a high energy contact to insure uniform wetting/mixing of the fluids. The mixture is directed through a chamber having a spacial aspect to insure uniform mixture before placement into a secondary chamber having multiple distribution points to assist in diluting the mixture into an additional fluid before directing the fluid to its point of use.
    Type: Grant
    Filed: May 30, 1996
    Date of Patent: October 13, 1998
    Assignee: Stranco, Inc.
    Inventor: Ralph Morrison
  • Patent number: 5770068
    Abstract: A stationary hydraulic jump is utilized in a multi-phase mixing system to mix components present in a plurality of separate phases. The flow rate and film height of a liquid phase in a first pipe section is metered and combined with a flow rate metered gas phase to form a stationary hydraulic jump in a second pipe section. The jump position is monitored and maintained stationary. A mixed fluid flows from the jump. A variety of solid, liquid, and gaseous components may be mixed in the hydraulic jump through appropriate selection of the liquid and gas phase components.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: June 23, 1998
    Assignee: Ohio University
    Inventor: W. Paul Jepson
  • Patent number: 5711600
    Abstract: Cellulose pulp is discharged from the dilution zone of a high consistency pulp tower at a substantially even volume flow and a substantially steady pulp consistency by mounting a particular parting member within a bottom portion of the tower. The parting member is constructed so as to define a first cross-sectional area between it and the tower side wall which is smaller than a second cross-sectional area below the parting member, in the dilution zone. The parting member may comprise a cone, cone frustum, pyramid, or pyramid frustum mounted substantially concentrically with the tower axis. The first cross-sectional area is at most 95% of a second cross-sectional flow area in the dilution zone, and typically about 90% or less. A ring may extend inwardly from the side wall at the parting member and define the first cross-sectional flow area with the parting member. Alternatively the parting member may itself comprise a ring having a substantially triangular (e.g.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 27, 1998
    Assignee: Ahlstrom Machinery Corporation
    Inventor: Olavi Toukonummi
  • Patent number: 5642937
    Abstract: A pressure-differential liquid stirrer which includes a liquid tank which holds the liquid to be stirred, the liquid tank having a top opening, a bottom wall, and a sealing cover covered on the top opening, the sealing cover having a hole; a single-outlet tube vertically disposed inside the liquid tank, having a bottom opening facing the bottom wall of the liquid tank and spaced from it by a gap for permitting the liquid to flow between the liquid tank and the single-outlet tube; an air pipe having one end inserted through the hole of the sealing cover into the inside of the liquid tank, and an opposite end coupled to an air control device; and an air control device coupled to the air pipe and controlled to force compressed air into the liquid tank and to release air out of the liquid tank so as to force the liquid to be stirred.
    Type: Grant
    Filed: April 23, 1996
    Date of Patent: July 1, 1997
    Inventor: Ching Fu Kuan
  • Patent number: 5605400
    Abstract: A mixing element comprises a cylindrical passage pipe through which a liquid flows, and a plurality of blade bodies disposed inside the passage pipe. The blade bodies forms inside the passage pipe a plurality of fluid passages extending spirally and in a longitudinal direction of the passage pipe. And, a gap between the blade bodies forms an opening for communicating the fluid passages to each other. These spiral blade bodies are produced independently to the passage pipe, after that, they are joined to an inner face of the passage pipe. Thus produced fluid fixer has an extremely high mixing-agitating effect.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: February 25, 1997
    Inventor: Hisao Kojima
  • Patent number: 5501804
    Abstract: In a mechanical cell for blending elastomer particles and solution into uniform mixtures, a solid core with an entrance surface, an exit surface spaced apart from and substantially parallel to the entrance surface, and a plurality of minute core passageways therebetween for flow of an elastomer-containing hydrocarbon solution from the entrance surface to the exit surface, the passageways have a characteristic dimension of predetermined size to reduce globules of elastomer to small particles distributed evenly in liquid hydrocarbon solution without plugging the passageways. Typically the passageways have a characteristic dimension of predetermined size to reduce globules of elastomer selected from the group consisting of natural rubber, styrene-butadiene rubber, polybutadiene rubber, polyisoprene, a nitrile rubber, and a copolymer of a 1,4-conjugated diene and a vinyl aromatic monomer, to small particles distributed evenly in liquid hydrocarbon solution comprising a vinyl aromatic monomer.
    Type: Grant
    Filed: July 14, 1994
    Date of Patent: March 26, 1996
    Assignee: Amoco Corporation
    Inventors: Richard A. Hall, Michael G. O'Connell, Evelyn A. Taylor
  • Patent number: 5462351
    Abstract: A gas conditioning vessel for bulk solids undergoing mass flow. The gas is introduced into the solids through an open bottom distributor forming a plenum. The plenum opens into the vessel at its bottom, the injection sites being bounded by vertical walls of the distributor. The vertical configuration optimizes solids pressure at these sites to suppress localized fluidization and flow instability due to stress conditions.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: October 31, 1995
    Assignee: Jenike & Johanson, Inc.
    Inventor: T. Anthony Royal
  • Patent number: 5406995
    Abstract: A container assembly includes an outer container and at least one inner container whose internal volume has the same ratio to the remaining internal volume of the outer container as the desired ratio of liquids to be mixed. An orifice in the inner container establishes communication between the lower end portions of the two containers so that a previously mixed liquid mixture of a predetermined ratio resides at the same level in both containers. The container assembly may be filled with additional mixture of the same ratio by filling the inner container with one liquid and by flushing that liquid from the inner container and into the outer container with a second liquid until the outer container is full.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: April 18, 1995
    Assignee: Viking Industrial Products, Inc.
    Inventor: Charles J. Gantzer
  • Patent number: 5327947
    Abstract: A vertical auger bottom-fill bag filling machine including a conical auger bowl depending from a cylindrical hopper on rocker arms, with the auger bowl being connected to the cylindrical hopper and a fill tube by flexible gaskets. A vertical auger shaft extends through the cylindrical hopper, auger bowl, and fill tube, with a section of flighting disposed within the auger bowl and fill tube to compress, de-aerate, and dispense the product. An agitator is mounted on the bottom of an agitator drive shaft which circumscribes the auger shaft and rotates independent thereof, the agitator having paddles which move the product and press the product downwardly in the auger bowl. An inverted venting cone is disposed within the auger bowl, with a vent tube extending upwardly and terminating proximate to the top of the cylindrical hopper.
    Type: Grant
    Filed: August 27, 1990
    Date of Patent: July 12, 1994
    Inventor: Harold R. McGregor
  • Patent number: 5316384
    Abstract: A primary-secondary circuit hydraulic interface is disclosed for use in chilled water and hot water systems in which a suction manifold header is used to tie in the secondary return water, the primary supply water, and the suction side of the primary and secondary pumps. The hydraulic interface is installed within the suction manifold at the location where the secondary return water enters the suction manifold. The hydraulic interface allows the bypass water (which is excess primary supply water) and the secondary return water to easily enter the hydraulic interface into a downstream portion of the manifold through large openings and forces the two streams of water to collide together, thereby ensuring a turbulent mixing to take place. The hydraulic interface forces the mixed water to exit the hydraulic interface through much smaller openings into a downstream portion of the manifold, thereby ensuring that the bypass water and secondary return water are thoroughly blended together as they exit.
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: May 31, 1994
    Assignee: Unosource Controls, Inc.
    Inventor: Anthony B. Corso
  • Patent number: 5277492
    Abstract: An improved solid particulate matter blender which is essentially a cylindrical vessel with a hopper bottom and a central lift pipe through which pressurized gas is pumped in order to lift material from the bottom to the top for remixing. An internal cone structure mounted inside the conical bottom hopper improves the mixing action within the blender. A cylindrical extension is attached to the bottom of the internal cone structure and extends toward the bottom of the vessel. Material originating at various heights thus reaches the bottom and is lifted to the top together to accomplish the mixing action.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: January 11, 1994
    Assignee: Fuller-Kovako Corporation
    Inventor: Kermit D. Paul
  • Patent number: 5248197
    Abstract: A blending silo of the type having a silo vessel defining a center axis and provided with a conical bottom ending in a vessel outlet, includes a funnel with its longitudinal axis coinciding with the center axis of the silo vessel and with its interior space being subdivided by a plurality of sheet segments in several compartments which are successively arranged in circumferential direction such that neighboring compartments have differently sized inlet cross sections and/or outlet cross sections to attain a superior homogenizing of bulk material.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: September 28, 1993
    Assignee: Waeschle Maschinenfabrik GmbH
    Inventors: Robert Storf, Norbert Wohnhas, Hans Hoppe
  • Patent number: 5240328
    Abstract: An apparatus for mixing powdered or coarse-grained bulk materials includes a first mixing device (4) with a second mixing device (11) lying below it, each of them having cylindrical mixing containers (2, 12) with downward tapering mass flow hoppers (3, 13). The bulk material from the upper mixing device (4) is conveyed via gravity pipes (9, 10, 10', 28, 29) into the second mixing device (11), which concentrically surrounds a third mixing device (6). Outlet apertures (27) are provided in the third mixing device (6) to ensure a constant discharge mass flow through the total lower outlet area (25).
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: August 31, 1993
    Assignee: AVT Anlagen- und Verfahrenstechnik GmbH
    Inventor: Wolfgang Krambrock
  • Patent number: 5234587
    Abstract: To supply a programmed gradient to a high pressure pump for introduction into a column, a mixer, degasser and accumulator communicates with the high pressure pump to supply fluid thereto, having a volumn no more than 150 times the chamber volume of the high pressure pump. The mixer, degasser and accumulator includes temperature sensors which sense when the mixer, degasser and accumulator has been emptied to a level where it cannot respond to a demand for fluid from said high pressure pump and provides a signal to a low pressure pump which responds by cycling to again fill the mixer, degasser and accumulator. Upon receiving a demand signal, the low pressure pump fills by drawing fluid from a plurality of fluid sources to compose the gradient being used at that time, with the pump slowing during valve opening and closing so as to avoid cavitation.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: August 10, 1993
    Assignee: Isco, Inc.
    Inventors: Robert W. Allington, Daniel G. Jameson
  • Patent number: 5230253
    Abstract: An improved fluid mixing device comprising a mixing chamber having end walls and a cylindrical side wall. A first fluid conduit joins the mixing chamber at a first port formed in the first end. A second fluid conduit joins the mixing chamber at a second port formed in the side wall. A second fluid conduit is angled with respect to the mixing chamber to direct fluid flow from the conduit through the second port generally along the wall of the mixing chamber to create a rapid vortexing action. A third conduit joins the mixing chamber at a third port in the second end. A fourth conduit intersects the third conduit, the center lines of the third and fourth conduits offset at the area of intersection.
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: July 27, 1993
    Assignee: Beckman Instruments, Inc.
    Inventors: William M. Blough, Jr., Jack J. Keegan
  • Patent number: 5145253
    Abstract: An integrated process blending apparatus which blends particulate material and also automatically controls the flow of material into the blender and out to the associated processing equipment. Load cells attached to the blender vessel are used to control the entry of material into the blender, while the pressure drop in the blender output pipe is used to control an output deflector to either remove or recycle material within the blender. The blender is also made more effective by dividing it into vertical compartments with separators which have angled portions preferably in their lower regions to cause different downward flow velocities in each compartment, and by creating a multistage blender by stacking sets of offset compartments one on top of another.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: September 8, 1992
    Assignee: Fuller Company
    Inventors: Kermit D. Paul, Leslie C. Bartholomew, John S. Szazdi, Jr., Gerald J. Labelle
  • Patent number: 5123749
    Abstract: A blending apparatus, inexpensive in construction and requiring a minimum of recirculation, is today essential for economical and thorough blending of particulate material, for example, plastic pellets of virgin material and of pellets that have been reconstituted from recycled material. Construction of the blender is low in cost because the customary receiver, and its piping, conventionally installed below the blender are eliminated. The novel convex baffle serves: (1) as a termination surface for the otherwise conventional perforated blending conduits; and (2) retains a toroidal annular volume of a specific particulate material as determined by an analogous test apparatus in position between the upper outer surface of the baffle and the inside wall of the blender.
    Type: Grant
    Filed: April 10, 1991
    Date of Patent: June 23, 1992
    Inventor: Hugh E. Avery, Jr.
  • Patent number: 5104229
    Abstract: A method and apparatus is provided for blending solid particulate material in a vessel which includes a center lift column and a first downcomer channel which includes n successive vertical sections and n flow ports respective located at a top portion of the n sections. The n sections include withdrawal structure for providing a volumetric outlet flow rate which includes a flow rate contribution from each of the n sections which is 1/n of the outlet flow rate. The apparatus can also include a second channel which includes a plurality of vertically spaced inlets for receiving particulate material from different vertical locations within a blending vessel of the apparatus and an outlet for returning particulate material to the lower part of the vessel, with each of the inlets of the second channel including a baffle extending into an internal flow area of the channel.
    Type: Grant
    Filed: February 1, 1989
    Date of Patent: April 14, 1992
    Assignee: Fuller Company
    Inventor: Kermit D. Paul
  • Patent number: 5087128
    Abstract: A method and apparatus for automatically and simultaneously weighing and integrating various nutritional supplements for subsequent blending with livestock feed grain. The apparatus includes a housing formed with a plurality of upper inlet openings and a lower outlet opening. A plurality of augers convey nutritional supplements from a storage area into the inlet openings. A plurality of weigh hoppers are pivotally mounted below the inlet openings on load cells. Weight indicators are electrically connected to the load cells and augers, and are interfaced with a computer, for controlling and coordinating the deposit of supplements from the augers, load cell weighing, and the pivotal dumping movement of the weigh hoppers. A funnel containing a plurality of deflectors is mounted within the housing below the weigh hoppers, and communicates at its lower end with a motor-driven flighted drum rotatably mounted within the housing, which in turn communicates with the outlet opening.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: February 11, 1992
    Assignee: Robert J. Matthews Co.
    Inventors: James S. Matthews, Robert K. Matthews, Myron M. Martin
  • Patent number: 5074670
    Abstract: An integrated process blending apparatus which blends particulate material and is also adaptable to store blender inventory to thereby integrate process feed with the blending function. The apparatus comprises a fluidized bed blending means to preblend that raw feed which is not send directly to the gravity blender. Overflow from the fluidized bed means is directed into a storage chamber means from which it can be withdrawn upon demand and sent into the blender. The blender is also made more effective by dividing it into vertical compartments with separators which have angled portions preferably in their lower regions to cause different downward flow velocities in each compartment, and by creating a multistage blender by stacking sets of offset compartments one on top of another.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: December 24, 1991
    Assignee: Fuller Company
    Inventor: Kermit D. Paul
  • Patent number: 5018869
    Abstract: A method and apparatus for blending a material feed and/or separating debris from a material feed is disclosed in which a feed separator is used with a blender and/or debris separator. The feed separator separates a feed from the conveying air flow which conveys the feed and the conveying air flow, devoid of feed, is then used to blend the conveyed feed and/or separate debris therefrom.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: May 28, 1991
    Assignee: Fuller Company
    Inventor: Kermit D. Paul
  • Patent number: 5005983
    Abstract: A plate blender for use in the blending of particulate and granular solid materials is disclosed. The plate blender includes a tank having a plurality of vertical, radially extending baffles and with a series of vertically spaced windows in some of the baffles. In one embodiment, one of the baffles is of solid construction and the remaining baffles have a series of vertically spaced windows in each baffle, with the series of windows for each successive baffle in the direction of filling of the vessel being located at a progressively lower level than for the previous baffle so that the filling sequence results in the material to be blended being allowed to flow successively from one blending zone to the next around the circumference of the vessel and with the location and number of windows providing for consecutive layers of material throughout the zones. The plate blender may be employed in the blending of flowable particulate solid materials such as plastic pellets and powders.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: April 9, 1991
    Assignee: Apex Engineering Inc.
    Inventors: Dale Draffen, William E. Dunning, Larry D. McGregor, Donald L. Walker, Harold R. Sisk
  • Patent number: RE33909
    Abstract: A meter measures the quality of steam flowing in a conduit. The steam comprises a liquid and a vapor. The meter includes a mixer in the conduit for mixing the steam in the conduit to produce a mixture which has a density representative of the liquid and the vapor. A density sensor, or desitometer, senses the density of the mixture. The densitomer produces an improved output due to the mixing. A pressure sensor senses pressure in the steam line. A calculating means, such as a microprocessor system, calculates the steam quality as a function of the sensed density and pressure.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: May 5, 1992
    Assignee: Kay-Ray/Sensall, Inc.
    Inventors: Raul Brenner, John M. DiMartino