Including Discharge-related Structure In Nature Of (a) Outlet Having Device For Controlling Quantity Of Flow, (b) Element Associated With Pickup Of Material And Adjustable For Varying Quality Of Flow, Or (c) Static Scraper Or The Like For Engaging Material In Moving Bowl Patents (Class 494/56)
  • Publication number: 20110143906
    Abstract: A centrifuge, including: a flange closing off one axial end of a separation chamber; a plurality of apertures that traverse axially through the flange at a radial distance from a flange axis, wherein at least one aperture is in fluid communication with a first outlet passage; a plurality of weir inserts removably disposed within the plurality of apertures to control a flow of one or more fluids from the separation chamber; wherein at least one weir insert disposed within the at least one aperture in fluid communication with the first outlet passage is changeable to prevent or allow fluid communication between the separation chamber and the first outlet passage.
    Type: Application
    Filed: August 5, 2009
    Publication date: June 16, 2011
    Applicant: M-I LLC
    Inventors: Thomas Geehan, Leonardo Renzo Vicentini, Albert Walraven
  • Patent number: 7935042
    Abstract: A centrifugal separator includes a cylindrical bowl having a conical lower end with an opening through which feed liquid is injected during a feed mode of operation. During the feed mode, solids separate from the feed liquid and accumulate along the inner surface of the bowl as the bowl rotates at high speed. After accumulation of the solids, the rotation of the bowl is stopped and residual liquid is drained by gravity from the bowl. In a solids discharge mode of operation, a piston of a piston assembly is urged downward along a vertical axis in response to fluid such as compressed gas or hydraulic liquid. The downward movement of the piston forces accumulated solids from the bowl via the opening in the conical lower end thereof. The solids pass from the bowl and into a passage leading to an outlet port, where the solids exit the separator.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: May 3, 2011
    Assignee: Wagner Development, Inc.
    Inventor: Robert B. Carr
  • Patent number: 7918350
    Abstract: A separation apparatus and method are employed using a separation channel for rotation about an axis. Such channel includes radially spaced apart inner and outer side wall portions and an end wall portion. An inlet conveys fluid into the channel. A barrier is located in the channel intermediate of the inner and outer side wall portions. A first flow path communicates between upstream and downstream sides of the barrier. A collection region may be located downstream of the barrier for communication with the first flow path. An outer side wall section of the channel may be positioned radially outward of an upstream section thereof. The barrier may join the outer side wall portion along a substantial portion of an axial length of the channel. First and second exit flow paths may allow communication with the channel either upstream or downstream of the barrier or both.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: April 5, 2011
    Assignee: Fenwal, Inc.
    Inventors: Kyungyoon Min, Richard I. Brown, Alp Akonur, Julie Moriarty
  • Patent number: 7897054
    Abstract: A flexible, disposable centrifuge bag for receiving and holding a fluid sample, comprising one or more tubes and upper and lower flexible sheets having doughnut shaped configurations. The upper and lower sheets are superimposed and completely sealed together at their outer perimeters to define an outer perimeter of the centrifuge bag. The inner perimeter of the bag defines a central core. The tubes are sandwiched between the upper and lower sheets and extend from the central core of the centrifuge bag. The upper and lower sheets are sealed together at their inner perimeters such that the tubes are sealed between said upper and lower sheets at the inner perimeter. The bag may be used to harvest platelet rich plasma from whole blood in either a batch method or while simultaneously infusing additional aliquots of whole blood into the bag during centrifugation.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: March 1, 2011
    Assignee: Arteriocyte Medical Systems, Inc.
    Inventors: Victor D. Dolecek, David Malcolm
  • Publication number: 20110039680
    Abstract: The centrifugal separator comprises a rotatable bowl having a separation chamber defined by a base. The base comprises a first outlet opening defined by a weir at a first level. An outlet chamber communicates with the separation chamber through a first outlet opening. The outlet chamber is connected with an outlet opening, which opens at a second level below the first level into an exterior of the bowl. The outlet chamber outlet opening is provided with an outlet nozzle with an outlet direction opposite the direction of rotation, and an overflow inlet opening is present in the outlet chamber, and is placed at a third level between the first and the second level. The overflow inlet opening communicates with an overflow outlet opening, that opens into the exterior of the bowl.
    Type: Application
    Filed: April 15, 2009
    Publication date: February 17, 2011
    Applicant: ALFA LAVAL CORPORATE AB
    Inventor: Bent Madsen
  • Patent number: 7866259
    Abstract: An apparatus for use with a food processor base and a method for using the same. The food processor base includes a seat, a drive shaft and a motor. The drive shaft is rotated by the motor. The apparatus includes an outer bowl, a cover for the outer bowl, and a perforated inner bowl. The outer bowl may include a connector for being seated on the seat of the food processor base. The inner bowl is positioned within the outer bowl and is connectable to the drive shaft of the food processor base for rotation of the inner perforated bowl within the outer bowl. The inner perforated bowl has a one to one rotation with the drive shaft.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: January 11, 2011
    Assignee: Innovative Products for Life Inc.
    Inventors: Hatim Zaghloul, Mohammed Mali, Hussein Desouki, Sisso El-Hamamsy
  • Patent number: 7837884
    Abstract: A platelet collection device comprising a centrifugal spin-separator container with a cavity having a longitudinal inner surface. A float in the cavity has a base, a platelet collection surface above the base, an outer surface. The float density is below the density of erythrocytes and above the density of plasma. The platelet collection surface has a position on the float which places it below the level of platelets when the float is suspended in separated blood. During centrifugation, a layer of platelets or buffy coat collects closely adjacent the platelet collection surface. Movement of a float having a density greater than whole blood through the sedimenting erythrocytes releases entrapped platelets, increasing the platelet yield.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: November 23, 2010
    Assignee: Hanuman, LLC
    Inventors: Randel Dorian, Scott R. King, Richard Wood Storrs
  • Patent number: 7824558
    Abstract: A centrifugal processing bag, system and method for separating the components of a mixed material is presented. The processing bag includes a hub and a first port for receiving the mixed material, where the first port includes an outlet positioned within the processing bag at a perimeter of the bag. The processing bag also including a second port having a second port inlet spaced proximate the hub and away from a central axis of the hub. The second port directs a separated material collected from the second port inlet out of the processing bag.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: November 2, 2010
    Assignee: Velico Medical, Inc.
    Inventor: Keith M. Rosiello
  • Publication number: 20100255975
    Abstract: A powder spraycoating facility's powder recovery unit comprising a cyclone separator to separate coating powder from an air-powder mixed flow. The cyclone separator comprises a cyclone section separating powder from the powder-air mixed flow and a supply bin in the form of a downward-projecting extension of the cyclone section, said unit further comprising a powder passage in said cyclone from the cyclone section into the supply bin, said passage being devoid of powder blocking elements while being powder-tight relative to the atmosphere.
    Type: Application
    Filed: January 22, 2008
    Publication date: October 7, 2010
    Applicant: ITW GEMA AG
    Inventors: Felix Mauchle, Mark Steinnemann
  • Publication number: 20100210441
    Abstract: An apparatus for separating at least two discrete volumes of a composite liquid into at least a first component and a second component comprises a centrifuge, which comprising a rotor having a rotation axis, comprising at least one separation cell, for containing a separation bag containing a isolated volume of composite liquid; a satellite cell for containing a satellite bag, and a fluid path between the separation cell and the satellite cell, the path being radially closer to the rotation axis than both the separation cell and the satellite cell and axially above both the separation cell and the satellite cell.
    Type: Application
    Filed: April 28, 2010
    Publication date: August 19, 2010
    Applicant: CARIDIANBCT, INC.
    Inventor: Victor D. DOLECEK
  • Publication number: 20100184579
    Abstract: A separator including a separator drum having a conical interior and rotatably mounted at an axial end about a vertical axis of rotation. A rotating spindle is located at either a lower or upper end of the separator drum and is configured to drive the separator drum. The rotating spindle is disposed in an oscillating manner about a hinge point. Also included is supply tube for a product to be processed and two fluid outlets. One fluid outlet is for a light phase and one fluid outlet is for a heavy phase. A solids material discharge opening is located in an area of the separator drum's largest inner circumference. Further included is a separation pan assembly. A pressure chamber is configured to be acted upon by a fluid to change a location of a separation zone between the light phase and the heavy phase.
    Type: Application
    Filed: June 27, 2008
    Publication date: July 22, 2010
    Inventor: Kim Träger
  • Patent number: 7753834
    Abstract: A solid-bowl centrifuge comprising, a centrifugal drum rotatable about a horizontal axis of rotation, the centrifugal drum including a weir to drain a liquid out of the centrifugal drum, the weir including a passage having at least one passage opening in an axial end region of the centrifugal drum that includes a drum lid: a deflector plate arranged outside the centrifugal drum and in front of the drum lid, the deflector plate being stationary during an operation of the centrifugal drum and widening at least in sections as the deflector plate extends away from the centrifugal drum: and the deflector plate including an interior jacket, and a distance of the interior jacket from the horizontal axis of rotation not being constant but widening.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: July 13, 2010
    Assignee: Westfalia Separtator AG
    Inventors: Helmut Figgener, Markus Fleuter, Ulrich Horbach, Ludger Horstkötter, Martin Overberg, Stefan Terholsen
  • Publication number: 20100069215
    Abstract: A centrifuge includes a rotator comprising a receiving unit receiving materials and guiding the materials to move upward by centrifugal force to an upper portion of the receiving unit, and a rotator cover covering the upper portion of the receiving unit. The centrifuge also includes a container that is coupled to the rotator cover to be connected to the receiving unit and that receives the materials moved upward along the receiving unit. The centrifuge and a centrifuging method as disclosed herein are used for separating a fluid to which a large centrifugal force is applied and a fluid to which a smaller centrifugal force is applied by adjusting the rotation speed using the principle that centrifugal force during rotation varies according to specific components of a fluid. Thus, using the centrifuge and the centrifugal method, materials can be centrifuged and layers of the materials can be classified and collected accurately and easily.
    Type: Application
    Filed: January 3, 2007
    Publication date: March 18, 2010
    Applicants: MEDIKAN INC., YAHOH PROGRESSIVE IDEA AREA
    Inventors: Hee-Young Lee, Jun-Seok Lee
  • Publication number: 20100062923
    Abstract: A centrifuge includes a centrifugal drum rotatable about a vertical axis of rotation. The centrifugal drum includes one or more solids discharge orifices located at an area of the largest inside diameter of the drum. The solids discharge orifices include bores having discharge openings. The bores are arranged at least partially on an exterior of the centrifugal drum in a vertical direction Z at selected vertical heights along the exterior of the centrifugal drum.
    Type: Application
    Filed: November 8, 2007
    Publication date: March 11, 2010
    Applicant: GEA Westfalia Separator GmbH
    Inventors: Wilfried Mackel, Andreas Penkl, Thomas Bathelt, Kathrin Quiter, Klaus Baalmann
  • Patent number: 7628749
    Abstract: In a system for combined centrifugation and microfiltration, retentate from a cross-flow microfilter is fed to an automatic piston discharge centrifuge for solids removal, thereby enhancing the efficiency of both processes. The centrifuge includes a cylindrical bowl having a conical lower end with an opening through which feed liquid is injected. Solids separate from the feed liquid and accumulate along the inner surface of the bowl as the bowl rotates at high speed. A microfiltration membrane can be added to improve solids retention in the bowl and provide a filtered centrate. During solids discharge, a piston is urged downward along a vertical axis. The downward movement of the piston forces accumulated solids from the bowl via the opening in the conical lower end thereof.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: December 8, 2009
    Assignee: Wagner Development Inc.
    Inventor: Robert B. Carr
  • Publication number: 20090291819
    Abstract: A method for centrifugally separating whole blood into red blood cells and a plasma constituent rotates about a rotational axis a separation zone having radially spaced apart walls with a high-G side and a low-G side located closer to the rotational axis than the high-G side. Whole blood enters the rotating separation zone in an entry region to begin separation. Separation is halted by a terminal wall that is circumferentially spaced from the entry region. The whole blood separates into red blood cells toward the high-G side and plasma constituent toward the low-G side. The method directs red blood cells separated in the separation zone in a circumferential flow direction toward the terminal wall. The method directs separated red blood cells from the rotating separation zone through a second path that extends, at least in part, radially beyond the high-G wall.
    Type: Application
    Filed: August 3, 2009
    Publication date: November 26, 2009
    Applicant: Fenwal, Inc.
    Inventors: Tom Westberg, Kelly B. Smith, Michel L. F. Joie
  • Patent number: 7618361
    Abstract: A centrifugal separator includes a cylindrical bowl having a conical lower end with an opening through which feed liquid is injected during a feed mode of operation. During the feed mode, solids separate from the feed liquid and accumulate along the inner surface of the bowl as the bowl rotates at high speed. After accumulation of the solids, the rotation of the bowl is stopped and residual liquid is drained by gravity from the bowl. In a solids discharge mode of operation, a piston of a piston assembly is urged downward along a vertical axis in response to fluid such as compressed gas or hydraulic liquid. The downward movement of the piston forces accumulated solids from the bowl via the opening in the conical lower end thereof. The solids pass from the bowl and into a passage leading to an outlet port, where the solids exit the separator.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: November 17, 2009
    Assignee: Wagner Development, Inc.
    Inventor: Robert B. Carr
  • Patent number: 7614995
    Abstract: A separator comprising a centrifugal drum that includes a drum shell having at least one solids discharge nozzle. Further included is at least one wear protection element on the drum shell in an area of and behind the at least one solids discharge nozzle. The at least one wear protection element includes or is constructed as a plate-type body.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: November 10, 2009
    Assignee: Westfalia Separator AG
    Inventors: Dieter Schulz, Jürgen Linnemann, Anton Kleimann
  • Patent number: 7585269
    Abstract: A centrifugal separator of the type having migration, retention and lip zones of the interior surface of the rotating bowl has a variable diameter lip to increase the amount of target material retained in the retention zone. The lip zone's variable diameter is provided by a flexible cylindrical member having an inner diameter which is selectively and uniformly decreased or increased by variation of the pressure applied to the member. By progressively decreasing the inner diameter of the lip zone the volume of retained material is increased over the cycle of the separator.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: September 8, 2009
    Inventor: Steven A. McAlister
  • Patent number: 7582049
    Abstract: A centrifugal fluid separation system is disclosed for centrifugally separating a composite fluid into components thereof. This centrifugal separation system includes at least a centrifugal rotor which has a composite fluid containment area, a fluid flow channel/tubing and at least one separated component collection area defined therein. A composite fluid to be separated is delivered to the fluid containment area where under centrifugal forces the composite fluid is separated into components and then from which a component travels through an outlet channel to a respective separated component fluids flowing therethrough. A centrally disposed pump is also provided to move the separated component(s) to the collection area(s). Optical sensing of the interface of the separated fluid components may be used with a clamp to stop flow. A disposable bag and tubing system is also disclosed for use with reusable rotor devices.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: September 1, 2009
    Assignee: CaridianBCT, Inc.
    Inventors: Dennis J. Hlavinka, William G Palsulich, Thomas J. Felt, Frank Corbin, III
  • Patent number: 7531148
    Abstract: A two-tube centrifuge separates light material and heavy material from an input mixture. A hollow drive shaft rotates a central body member about an axis of rotation. Two hollow arm assemblies, each having circular cross-section, are mounted on diametrically opposite sides of the central body. Each arm assembly includes an outer housing tube, an intermediate tube, and an inner tube that is longer than the intermediate tube. An end cap having a removable plug is mounted on the outer end of the housing-tube of each arm assembly. The inner ends of all three tubes are mechanically interlocked in a manner to cantilever mount the inner and intermediate tubes to the central-body with their outer ends spaced from the internal surface of the end cap. An input-mixture path extends through the hollow drive shaft, through the central-body, and into a cylindrical space between the inner and intermediate tubes of each arm assembly.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: May 12, 2009
    Assignee: ERTH Technologies, Inc.
    Inventors: Paul J. Cornay, Ernest Peter Tovani, Gary Matzen
  • Patent number: 7485084
    Abstract: The invention refers to a centrifugal separator and a method of separating a product to a heavy phase and light phase. A centrifuge rotor encloses a closed separation space, which has a radially outer part for the heavy phase, a radially inner part for the light phase and a central gas-filled space. The radially outer part is separated from the radially inner part by a interface layer level. An inlet extends into the separation space for feeding the product. A first outlet extend from the radially outer part for discharge of the heavy phase. A second outlet extends from the radially inner part for discharge of the light phase. A control equipment permits control of the interface layer level to a desired radial position. A sensor senses a parameter related to the gas pressure in the central space. The control equipment controls the counter pressure in the first outlet in response to the sensed parameter for controlling the interface layer level to the desired radial position.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: February 3, 2009
    Assignee: Alfa Laval Corporate AB
    Inventors: Leonard Borgström, Lasse Hurnasti
  • Patent number: 7470371
    Abstract: A platelet collection device comprising a centrifugal spin-separator container with a cavity having a longitudinal inner surface. A float in the cavity has a base, a platelet collection surface above the base, an outer surface. The float density is below the density of erythrocytes and above the density of plasma. The platelet collection surface has a position on the float which places it below the level of platelets when the float is suspended in separated blood. During centrifugation, a layer of platelets or buffy coat collects closely adjacent the platelet collection surface. Platelets are then removed from the platelet collection surface. Movement of a float having a density greater than whole blood through the sedimenting erythrocytes releases entrapped platelets, increasing the platelet yield.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: December 30, 2008
    Assignee: Hanuman LLC
    Inventors: Randel Dorian, Scott R. King, Richard Wood Storrs
  • Publication number: 20080171645
    Abstract: The invention refers to a centrifugal separator and a method of separating a product to a heavy phase and light phase. A centrifuge rotor encloses a closed separation space, which has a radially outer part for the heavy phase, a radially inner part for the light phase and a central gas-filled space. The radially outer part is separated from the radially inner part by a interface layer level. An inlet extends into the separation space for feeding the product. A first outlet extend from the radially outer part for discharge of the heavy phase. A second outlet extends from the radially inner part for discharge of the light phase. A control equipment permits control of the interface layer level to a desired radial position. A sensor senses a parameter related to the gas pressure in the central space. The control equipment controls the counter pressure in the first outlet in response to the sensed parameter for controlling the interface layer level to the desired radial position.
    Type: Application
    Filed: March 2, 2006
    Publication date: July 17, 2008
    Applicant: Alfa Laval Corporate AB
    Inventors: Leonard Borgstrom, Lasse Hurnasti
  • Publication number: 20080164194
    Abstract: A centrifugal fraction collection system including a rotating carrier for holding at least one sample collection container and inducing a centrifugal force, a guide disposed on the rotating carrier, and a flexible eluant tube disposed over the rotating carrier and through the guide for receiving a flow of eluant having volatile and non-volatile components and directing the flow of eluant into at least one sample collection container wherein the centrifugal force separates the non-volatile and volatile components based on their respective densities and collects the non-volatile components in at least one sample collection container.
    Type: Application
    Filed: September 19, 2007
    Publication date: July 10, 2008
    Inventor: Herbert J. Hedberg
  • Publication number: 20080153687
    Abstract: A solid bowl screw centrifuge including: a drum having a solids discharge at a conical end and at least one discharge opening at an end opposite the conical end, the at least one discharge opening arranged with an axial drum lid; a screw rotatable at a different speed relative to the drum; a centripetal chamber section connected behind the drum lid with the at least one discharge opening; a centripetal pump arranged to discharge a liquid phase from the solid bowl screw centrifuge; and an adjustable throttling device connected in front of the centripetal pump in the centripetal chamber section, the adjustable throttling device being assigned to the at least one discharge opening.
    Type: Application
    Filed: July 30, 2004
    Publication date: June 26, 2008
    Inventors: Michael Reichenbach, Michael Muller
  • Patent number: 7338427
    Abstract: In a centrifugal separator for separating a product to a heavy phase and a light phase. The centrifuge rotor encloses a separating space. An inlet channel permits feeding of the product to the separating space. A first outlet channel permits discharge of the heavy phase from the separating space. The second outlet channel permits discharge of the light phase from the separating space. The centrifuge rotor includes a first chamber for collecting the heavy phase, a heavy phase channel, for feeding the heavy phase, and a nozzle member between the heavy phase channel and the first chamber for controlled feeding. The first paring member extends outwardly in the first chamber from the first outlet channel for discharge of the heavy phase. The second paring member extends outwardly in the first chamber.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: March 4, 2008
    Assignee: Alfa Laval Corporate AB
    Inventors: Jouko Juhani Pitkämäki, Robert Sandblom
  • Patent number: 7326169
    Abstract: A full-jacket helix-type centrifuge including a drum and at least one weir having a port. A throttle disk is assigned to the port. At least one nozzle rotates with the drum and is assigned to an outlet for discharging clarified liquid from the drum.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: February 5, 2008
    Assignee: Westfalia Separator AG
    Inventors: Paul Brüning, Jürgen Hermeler, Helmut Figgener
  • Patent number: 7320750
    Abstract: A centrifuge with controlled discharge of dense materials disclosed. A centrifuge includes a fluid separation wall placed within a sleeve to form a containment zone therebetween. The fluid separation wall aligns and rotates parallel to an axis of rotation. A receptacle forming a part of the fluid separation wall includes a void area. An opening extending through the fluid separation wall from the void area to the outer surface of the receptacle transports the more dense material to the containment zone. A valve ring forming a part of the fluid separation wall includes a valve orifice. The valve ring aligned perpendicular to the axis of rotation and slides along the fluid separation wall to move between open and closed positions. The valve orifice aligns with the opening such that the more dense material exits the fluid separation wall and moves into the containment zone.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: January 22, 2008
    Assignee: Phase Inc.
    Inventors: Curtis Kirker, Berkeley F. Fuller
  • Patent number: 7306555
    Abstract: A centrifugal method, and corresponding system, for processing blood to collect platelet rich plasma. A separation chamber is filled with blood from a fill syringe by rotating the separation chamber at a fill rotation rate and pumping the blood from the fill syringe. A soft spin is used to initially separate red blood cells from platelets by spinning the separation chamber at a soft spin rate. A percentage of the blood is drawn from the separation chamber back into the fill syringe to remove separated red blood cells. A second portion of the separated blood is drawn from the separation chamber until a red blood cell/platelet interface is detected. A hard spin is performed by spinning the separation chamber at a higher rate and connecting tubing is cleared of red blood cells by drawing a predetermined clearing volume. The platelet rich plasma is then collected in the collection syringe.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: December 11, 2007
    Assignee: Medtronic, Inc.
    Inventors: Victor D. Dolecek, Gary L. Berg, Kenneth E. Merte, David Malcolm, Kevin D. McIntosh, Vitaly G. Sitko
  • Patent number: 7297272
    Abstract: A separation apparatus and method are employed using a separation channel for rotation about an axis. Such channel includes radially spaced apart inner and outer side wall portions and an end wall portion. An inlet conveys fluid into the channel. A barrier is located in the channel intermediate of the inner and outer side wall portions. A first flow path communicates between upstream and downstream sides of the barrier. A collection region may be located downstream of the barrier for communication with the first flow path. An outer side wall section of the channel may be positioned radially outward of an upstream section thereof. The barrier may join the outer side wall portion along a substantial portion of an axial length of the channel. First and second exit flow paths may allow communication with the channel either upstream or downstream of the barrier or both.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: November 20, 2007
    Assignee: Fenwal, Inc.
    Inventors: Kyungyoon Min, Richard I. Brown, Alp Akonur
  • Patent number: 7261683
    Abstract: A centrifugal separator includes a cylindrical bowl having a conical lower end with an opening through which feed liquid is injected during a feed mode of operation. The feed liquid is separated into centrate and solids, which accumulate along the inner surface of the bowl. A piston assembly includes a conical piston disposed within the cylindrical bowl, coupled to a piston actuator by a two-part piston shaft. During the feed mode of operation, the piston shaft is disconnected, and the piston is held in an uppermost position by hydraulic pressure from the feed liquid as the bowl is rotated, and a centrate valve on the piston is opened to permit the centrate to flow out to a centrate discharge port. After solids are separated and accumulated on an interior surface of the bowl, the rotation of the bowl is stopped and residual centrate is drained therefrom.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: August 28, 2007
    Assignee: Wagner Development, Inc.
    Inventor: Robert B. Carr
  • Patent number: 7223346
    Abstract: A platelet collection device comprising a centrifugal spin-separator container with a cavity having a longitudinal inner surface. A float in the cavity has a base, a platelet collection surface above the base, an outer surface. The float density is below the density of erythrocytes and above the density of plasma. The platelet collection surface has a position on the float which places it below the level of platelets when the float is suspended in separated blood. During centrifugation, a layer of platelets or buffy coat collects closely adjacent the platelet collection surface. Platelets are then removed from the platelet collection surface. Movement of a float having a density greater than whole blood through the sedimenting erythrocytes releases entrapped platelets, increasing the platelet yield.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: May 29, 2007
    Assignee: Hanuman LLC
    Inventors: Randel Dorian, Scott R. King, Richard Wood Storrs
  • Patent number: 7131370
    Abstract: The invention relates to a centrifugal separating device and method for clarifying must during wine production, especially with a separator (7). Gas and/or gelatine and/or other additives are added to the must that is clarified in the separating device after the must has passed through the separating device and before it passes through the constant pressure valve (13) of the separating device, as the must is discharged (9), in order to obtain flotation.
    Type: Grant
    Filed: December 30, 2000
    Date of Patent: November 7, 2006
    Assignee: Westfalia Separator AG
    Inventors: Frank Schauz, Ulrich Schmid
  • Patent number: 7074172
    Abstract: A centrifugal processing bag, system and method for separating the components of a mixed material is presented. The processing bag includes a hub and a first port for receiving the mixed material, where the first port includes an outlet positioned within the processing bag at a perimeter of the bag. The processing bag also including a second port having a second port inlet spaced proximate the hub and away from a central axis of the hub. The second port directs a separated material collected from the second port inlet out of the processing bag.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: July 11, 2006
    Assignee: ZymeQuest, Inc.
    Inventor: Keith Rosiello
  • Patent number: 7056273
    Abstract: A solid bowl screw centrifuge includes a centrifuging chamber and a rotatable drum having a horizontal axis of rotation. The rotatable drum surrounds the centrifuging chamber. Also included is a rotatable screw arranged in the rotatable drum, at least one solids discharge, at least one liquid discharge duct and a peeling disk via which liquids are discharged through the liquid discharge duct. Further included is a blocking chamber connected to an output side of the peeling disk.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: June 6, 2006
    Assignee: Westfalia Separator AG
    Inventors: Wilhelm Ostkamp, Franz Kramer, Wolf-Dietrich Herberg
  • Patent number: 7052451
    Abstract: A centrifugal separator includes a cylindrical bowl having a conical lower end with an opening through which feed liquid is injected during a feed mode of operation. The feed liquid is separated into centrate and solids, which accumulate along the inner surface of the bowl. A piston assembly includes a conical piston coupled to a piston actuator by a two-part piston shaft. During the feed mode of operation, the piston shaft is disconnected, the piston is held in an uppermost position by hydraulic pressure from the feed liquid, and a centrate valve on the piston is urged open to permit the centrate to flow out to a centrate discharge port. In a solids discharge mode of operation, the piston shaft is connected and the piston actuator urges the piston axially downward, closing the centrate valve and forcing the accumulated solids from the bowl via the opening in the conical lower end of the bowl.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: May 30, 2006
    Assignee: Wagner Development, Inc.
    Inventor: Robert B. Carr
  • Patent number: 7041045
    Abstract: A skimmer device (100) for discharging liquid from a centrifuge drum (10) comprising a vertically arranged skimmer disk pipe (20) and a skimmer disk (30) which is arranged inside the centrifuge drum and provided with at least one inlet duct. The inlet duct extends from the periphery (31) of the skimmer disk (30) and leads into at least one shaft duct (22) which extends at least partially along the skimmer disk pipe. The inlet duct and the shaft duct (22) form a discharge duct which has at least one throttle point (25, 27) where the cross-sectional area of the discharge is reduced. The inlet duct is divided by at least one duct division element (33.1, 33.2) into at least two partial inlet ducts (32.1 . . . 32.3) which are arranged on top of each other and which lead into the shaft duct (22). Each partial inlet duct (32.1 . . . 32.3) is provided with at least one partial inlet duct throttle element (34.1 . . . 34.3) at said throttle point.
    Type: Grant
    Filed: September 2, 2002
    Date of Patent: May 9, 2006
    Assignee: Westfalia Separator AG
    Inventor: Ludger Thiemann
  • Patent number: 7037428
    Abstract: A system for automatically processing blood components is described. The system includes a console, which contains all motors, pumps, sensors, valves and control circuitry, and a unique disposable set that includes a cassette supporting a centrifuge with an improved design, pump interfaces with an improved design, component and solution bags, and tubing. Various processes are implemented using a specific disposable set for each process which allows automatic identification of the process to be performed the console.
    Type: Grant
    Filed: April 18, 2003
    Date of Patent: May 2, 2006
    Assignee: Mission Medical, Inc.
    Inventors: Thomas C. Robinson, Thomas P. Robinson, Richard D'Elia, Paul Eibe, Thomas Sahines
  • Patent number: 7025715
    Abstract: The present disclosure relates to a rotary-cutting disk for a centrifuge. The rotary-cutting disk includes a disk-shaped base section adjoined by a tube-shaped section. Also included is at least one draining duct for a liquid phase in the base section, the draining duct extending at an acute angle from an inlet at an outer circumference of the base section and in a flow direction of a liquid phase. The at least one draining duct includes walls extending from the inlet to an outlet. At least one of the walls of the draining duct is at least partially or in sections contoured in a wave shape.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: April 11, 2006
    Assignee: Westfalia Separator AG
    Inventors: Ludger Thiemann, Volker Kassera
  • Patent number: 7022061
    Abstract: A rotating machine has a rotatable bowl generating a cylindrical slurry pool and at least one liquid phase discharge port assembly provided on the bowl. Each of one or more liquid phase discharge port assemblies on a bowl head define a liquid phase discharge path having a circumferential component oriented in opposition to a direction of rotation of the bowl. Each discharge port assembly includes a tubular member having at least one or two elbow pipe sections.
    Type: Grant
    Filed: February 3, 2003
    Date of Patent: April 4, 2006
    Assignee: Andritz AG
    Inventors: Woon-Fong (Wallace) Leung, Ascher H. Shapiro
  • Patent number: 6971525
    Abstract: A centrifuge with combinations of multiple features is disclosed. In one aspect, a centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a sleeve. The fluid separation wall rotates around the axis of rotation. A receptacle aids in separation of the more dense material from the fluid medium. The receptacle defined in a part by a respective geometry and a respective shape. An opening extends from the void area to the outer surface to transport the more dense material to the containment zone. An excitation apparatus associated with the receptacle creates a vibration within the receptacle. The centrifuge may further include a valve ring including a valve orifice the valve ring having a first position which blocks the more dense material from exiting the receptacle and a second position that allows the more dense material to move into the containment zone.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: December 6, 2005
    Assignee: Phase Inc.
    Inventors: Curtis Kirker, Berkeley F. Fuller
  • Patent number: 6962560
    Abstract: A centrifuge bowl for separating heavier particles from lighter particles and water comprises a first conical bowl wall leading to a pair of annular recesses at actually spaced positions. Each recess is generally V-shaped with an upper side wall, a lower side wall and a base. The base contains a plurality of angularly spaced discharge ducts each having a pinch valve by which it can be closed and mouth projecting through the base into the interior of the bowl for collecting the heavier particles. Each recess includes injection openings in the upper and lower side walls of the recess arranged to inject fluidizing water in a direction generally parallel to the base and across the mouth of each discharge duct. An insert member formed by two annular screens can be inserted into the recess radially inwardly of the discharge and injection holes and contains a bed of beads which act to float inwardly while the valves are closed and to collapse outwardly when the valves are opened.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: November 8, 2005
    Assignee: Knelson Patents Inc.
    Inventor: Ishwinder Singh Grewal
  • Patent number: 6939286
    Abstract: An imperforate bowl centrifuge for phase separation employing a rotatable outer cylinder having an interior wall with a plurality of indentations each with an orifice, and an outer wall with heavy phase waste routing channels leading from the orifices to a waste control valve. Separated heavy phase particles collect in the channels and flow by force of pressure, and exit through the waste control valve at one end of the outer cylinder when it is opened to release the waste. An outlet for the separated light phase fluid is disposed at another end of the outer cylinder. The channels in the outer wall may be axially or angularly disposed to force the separated heavy phase toward the waste control valve.
    Type: Grant
    Filed: April 29, 2002
    Date of Patent: September 6, 2005
    Assignee: Archon Technologies Inc.
    Inventor: Elman Dail Hurdlow
  • Patent number: 6932913
    Abstract: A system and method for vibration in a centrifuge is disclosed. A centrifuge for removing more dense material from a fluid medium includes a fluid separation wall placed within a non-rotating sleeve. The fluid separation wall rotates around the axis of rotation and includes an inner surface and an outer surface with at least one receptacle formed on the inner surface of the fluid separation wall. The receptacle aids in separation of more dense material from the fluid medium by forming a void space between the inner and outer surface. An excitation apparatus associated with the receptacle to create a vibration within the receptacle. A flow path may extend through the wall from the void area to the outer surface to transport more dense material to the containment zone.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: August 23, 2005
    Assignee: Phase Inc.
    Inventors: Curtis Kirker, Berkeley F. Fuller
  • Patent number: 6910998
    Abstract: The invention relates to a centrifuge provided with a blood bag system having an upper and lower outlet for separation of blood constituents, containing a rotor which can be driven in a rotative manner about a hub, wherein at least one conventional whole blood bag equipped with an upper outlet and with a lower outlet can be positioned vertically in this blood bag, while the whole blood bag can be arranged on the rotor in such a way that one outlet of the whole blood bag is bent in a radial direction, and the opposite outlet of the whole blood bag is bent in the other radial direction, so that the entire whole blood bag and the outlets thereof adopt an approximately Z- or S-shaped form in its functional position. In this case it is preferred that the upper outlet of the whole blood bag lie radially toward the interior and the lower outlet of the whole blood bag lie radially toward the exterior of the whole blood bag.
    Type: Grant
    Filed: December 8, 2001
    Date of Patent: June 28, 2005
    Assignee: Andreas Hettich GmbH & Co. KG
    Inventor: Günter Eberle
  • Patent number: 6855119
    Abstract: A blood separation system is fully mechanized to collect blood from a patient, separate waste portions of the blood, wash the blood, and redirect the usable portions to a device for reinjecting the usable portions into the patient. The system provides screen displays with detailed setup instructions and instructs the operator at the appropriate times to do certain manual steps. Apparatus for sequestration of platelet rich plasma spins at a high speed sufficient to separate solid cells from the blood sample and then spins at a lower speed for a predetermined time to allow platelets to elute from the solid cells.
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: February 15, 2005
    Assignee: Medtronic, Inc.
    Inventors: John Rivera, Son Le, Daniel Cheek, Richard Matt, Roger P. Kaminski
  • Patent number: 6849039
    Abstract: Blood separation systems and methods introduce blood into an annular separation channel between a low-G wall and a high-G wall while rotating the separation channel about an axis, for separation of the blood into blood components. The annular separation channel has an annular boundary wall. The systems and methods direct a first blood component into a constricted channel along the low-G wall. The systems and methods remove the first blood component through a first path that communicates with the separation channel through an opening that adjoins the constricted channel adjacent the low-G wall. The systems and methods direct a second blood component along a surface that extends generally in an axial direction along the high-G wall toward the annular boundary wall. The systems and methods collect the second blood component through a second path that communicates with the separation channel through an opening that adjoins the surface adjacent the high-G wall axially spaced from the annular boundary wall.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: February 1, 2005
    Assignee: Baxter International Inc.
    Inventors: Kyungyoon Min, Richard I. Brown, Julie Moriarty
  • Publication number: 20040242395
    Abstract: A skimmer device (100) for discharging liquid from a centrifuge drum (10) comprising a vertically arranged skimmer disk pipe (20) and a skimmer disk (30) which is arranged inside the centrifuge drum and provided with at least one inlet duct. The inlet duct extends from the periphery (31) of the skimmer disk (30) and leads into at least one shaft duct (22 which extends at least partially along the skimmer disk pipe. The inlet duct (32) and the shaft duct (22) form a discharge duct which has at least one throttle point where the cross-sectional area of the discharge reduced. The inlet duct (32) is divided by at least one duct division element (33.1, 33.2) into at least two partial inlet ducts (32.1 . . . 32.3) which are arranged on top of each other and which lead into the shaft duct (22). Each partial inlet duct (32.1 . . . 32.3) is provided with at least one partial inlet duct throttle element (34.1 . . . 34.3) at said throttle point.
    Type: Application
    Filed: April 26, 2004
    Publication date: December 2, 2004
    Inventor: Ludger Thiemann
  • Patent number: 6817970
    Abstract: A centrifuge is provided for recovering material of interest from the interstitial fluids of plant tissues. The centrifuge includes a rotatable centrifuge bowl having a radially outer wall inclined outwardly so that during centrifugation liquid in the bowl climbs the outer wall. The centrifuge bowl is contained in a vacuum sealed housing so that a material of interest contained in the bowl including said liquid can be subjected to a vacuum. A system for automated cleaning of the centrifuge is also provided.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: November 16, 2004
    Assignee: Large Scale Biology Corporation
    Inventors: Bradley I. Berit, Barry Bratcher, R. Barry Holtz