Comprising Plurality Of Axially-extending, Plate-like Elements, Each Having Its Inner Edge Lying Along Central Region Patents (Class 494/74)
  • Publication number: 20150148213
    Abstract: The rotary bowl (1) of this centrifugal separator is lined with conical structures divided into sectors (7) separated by angularly offset gaps (9) so as to promote a regular spiral fluid flow therein, which is laminar and enhances separation efficiency significantly: in the case of two-phase or three-phase suspensions, a “cake” is obtained on the side wall (8). A scraper (15) rotating at a slightly different speed may be added to enable simultaneously routing of the solid cake to the outlet and continuous processing.
    Type: Application
    Filed: June 27, 2013
    Publication date: May 28, 2015
    Inventors: David Chezaud, Jean-Pierre Feraud, Joël Robin, Tojonirinia Randriamanantena
  • Patent number: 8105495
    Abstract: A process for separating platelet rich plasma from a blood sample using a platelet rich plasma separator system is disclosed. The system includes an inner wall having a top edge and a central axis that is surrounded by a depth filter having a capacity to receive all of the erythrocytes in the blood sample, where an inner surface of the inner wall has an angle of about 0.2° from the central axis of the inner wall. The process includes spinning the inner cylinder at its central axis at a speed that separates the erythrocytes from plasma and platelets and causes the erythrocytes to collect against an inner surface of the depth filter. The cylinder is continually spun for a sufficient time to allow substantially all of the erythrocytes to flow up the inner surface and over the top edge into the depth filter, leaving platelet enriched plasma (PRP) in the inner cylinder, such that upon discontinuing the spinning, permits the platelet enriched plasma to flow to the bottom of the inner cylinder.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: January 31, 2012
    Assignees: Hanuman, LLC, Biomet Biologics, LLC
    Inventors: Randel Dorian, Michael D. Leach
  • Patent number: 8096422
    Abstract: Disclosed is a separator-concentrator, such as for separating and concentrating platelet-rich-plasma (PRP) from whole blood that is suitable for office use or emergency use for trauma victims. The PRP separator comprises a motorized centrifugal separation assembly and a concentrator assembly. The centrifugal separation assembly comprises a centrifugal drum separator and a motor having a drive axis connected to the centrifugal drum separator. The concentrator assembly comprises a water-removal module for preparing PRP concentrate.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: January 17, 2012
    Assignees: Hanuman LLC, Biomet Biologics, LLC
    Inventors: Randel Dorian, Michael D. Leach
  • Patent number: 8096933
    Abstract: A centrifuge with an electric motor (46), composed of a centrifuge outer frame (47), a heavy liquid collecting tank (18), a lower hollow shaft (22), centrifugal units, an upper hollow shaft (38), and a light liquid collecting tank (41). The heavy liquid collecting tank, the lower hollow shaft, the upper hollow shaft, and the light liquid collecting tank are all fixed to the centrifuge outer frame, the centrifugal units are fixed between the upper hollow shaft and the lower hollow shaft, the motor is connected to the upper hollow shaft and drives the upper hollow shaft to rotate, the upper hollow shaft is fixed to two or more centrifugal units connected in series and drives the centrifugal units to rotate, a hollow portion of the upper hollow shaft communicates with the light liquid collecting tank, centrifugal units are fixed to the lower hollow shaft and drive the lower hollow shaft to rotate, the heavy liquid collecting tank is a casing formed between the centrifuge outer frame and the centrifugal units.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: January 17, 2012
    Inventor: Shujiang Song
  • Publication number: 20110136649
    Abstract: The invention relates to a separation disc and a milk separator comprising a rotor, which separation disc together with other separation discs forms a stack of separation discs rotatable together with the rotor. The separation disc comprises a truncated substantially conical portion and an annular flange element connected to the conical portion at the smallest radius and extends therefrom radially inwards substantially perpendicular to the axis of rotation. The flange element has a radial extent corresponding to at least 10% of the radial extent of the conical portion. The inner radial edge of the flange element includes recesses distributed along the edge and adapted to protrusions on a column connected to the rotor, extending coaxially through the separation discs. The recesses are substantially filled by the protrusions. The radial extent of the recesses corresponds to at least 20% of the radial extent of the flange element.
    Type: Application
    Filed: April 7, 2009
    Publication date: June 9, 2011
    Applicant: ALFA LAVAL CORPORATE AB
    Inventors: Per-Olof Lindroth, Johan Bergstrom, Jan Ackalin
  • Publication number: 20110118099
    Abstract: A Microtiter plate centrifuge is disclosed. The centrifuge includes a motor assembly, a rotor assembly attached to the motor assembly via a shaft, the rotor assembly including at least two slots, symmetrically positioned, with respect to the shaft and a channel corresponding to each of said slots. The channels extending from the rotor assembly are suitable for holding Microtiter plates in a vertical position. Also included is a bottom plate engaging a brake pad, which when engaged creates sufficient friction to halt rotation of the rotor assembly.
    Type: Application
    Filed: September 9, 2010
    Publication date: May 19, 2011
    Inventors: Michael D. Rosenblum, H. Gerald Young
  • Patent number: 7905360
    Abstract: The invention concerns a separator, wherein the mixture, after passing through the inlet channels of the container body (1), penetrates into the admission chamber (30) of the rotor (2), where blades (35) arranged in star formation and perpendicular to the axis of rotation produce a centrifugal propulsion and, further, compact the components with greater density, thus facilitating extraction thereof. The thus modified mixture passes into the separating chamber (31), where blades (36) arranged in star formation and parallel to the axis of rotation, through their centrifugal force, push the components with greater density outwards; the latter having penetrated into the collecting cells (41) of the grid (34) which is coated on the outside of the separating chamber, through holes (42) exit from the rotor upon reaching the accumulation chamber (13). The fluid medium which, countered by a suitable pressure, cannot penetrate into the accumulation chamber, exit through evacuation channels.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: March 15, 2011
    Assignee: Luigi Pietro Della Casa
    Inventor: Luigi Pietro Della Casa
  • Patent number: 7866485
    Abstract: A Platelet Rich Plasma separator assembly is disclosed. The assembly can include a cylindrical outer wall closed at the top by an upper plate and closed at the bottom. A bottom plate having an upper surface sloped down to a central opening. The top edge of the inner wall terminates at a distance from the upper plate to define an annular erythrocyte passageway therebetween. The inner wall has an outer surface and an inner surface that slopes radially inward from its top edge to its bottom at an angle of from 0.2 to 5 degrees with a central axis of the inner wall. A cylindrical depth filter is positioned between the inner surface of the outer wall and the outer surface of the inner wall in communication with the inner wall through the erythrocyte passageway.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: January 11, 2011
    Assignees: Hanuman, LLC, Biomet Biologics, LLC
    Inventors: Randel Dorian, Michael D. Leach
  • Patent number: 7862494
    Abstract: The present invention relates to a centrifuge apparatus. The centrifuge apparatus is operable at certain predetermined parameters depending upon a product to be separated and is useable with a plurality of rotor assemblies. For example, a first rotor assembly of said plurality of rotor assemblies includes a first core having a first core configuration which is contained within a rotor housing of the first rotor assembly to define a first volume capacity such that the product passing through the first rotor assembly having the first volume capacity during rotation of the first rotor assembly in the centrifuge apparatus achieves a first particle separation of the product.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: January 4, 2011
    Assignee: Alfa Wassermann
    Inventors: Sandra Patricia Merino, Steven J. Dalessio, Robin Roy Louis Rudy Otten
  • Patent number: 7837609
    Abstract: The present invention relates to a centrifuge apparatus. The centrifuge apparatus is operable at certain predetermined parameters depending upon a product to be separated and is useable with a plurality of rotor assemblies. For example, a first rotor assembly of said plurality of rotor assemblies includes a first core having a first core configuration which is contained within a rotor housing of the first rotor assembly to define a first volume capacity such that the product passing through the first rotor assembly having the first volume capacity during rotation of the first rotor assembly in the centrifuge apparatus achieves a first particle separation of the product.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: November 23, 2010
    Assignee: Alfa Wassermann, Inc.
    Inventors: Sandra Patricia Meriño, Steven J. Dalessio, Robin Roy Louis Rudy Otten
  • Patent number: 7824559
    Abstract: A PRP separator-concentrator comprising a housing, a separation assembly, and a concentration assembly. The concentration assembly has a concentration sump. An axially concentric rigid stationary outlet tube is secured to the housing and extends through the separation assembly to the sump. The separation assembly is attached to and positioned above the concentration assembly to form a combined separator-concentrator assemblage that is rotatable about the outlet tube. The separation assembly includes a separation chamber lined with a depth filter having pores and passageways that are sized to receive and entrap erythrocytes during centrifuging. The concentration chamber has a floor for supporting desiccated beads and a wall with at least one opening closed with a screen. The concentrator can have a distribution of upright screen supports, the upright screen supports having an inner surface and an outer surface, the cylindrical screen being supported on the outer surface of the upright screen supports.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: November 2, 2010
    Assignees: Hanumann, LLC, Biomet Biologics, LLC
    Inventors: Randel Dorian, Michael D. Leach
  • Patent number: 7713185
    Abstract: A free-jet centrifuge for the cleaning of lubricating oil comprising, a housing with a removable cover, a rotor rotatably arranged in the housing and with channels for feeding and removing the lubricating oil. The rotor is of split design with a drive part and a dirt trapping part which can each be flowed through by their own partial lubricating oil flow and which are designed with a torque transmission device which is engageable and disengageable. The dirt trapping part is separable from the drive part. A device is provided to prevent or restrict the axial mobility of the dirt trapping part relative to the drive part, which is ineffective or detachable when the cover is removed. The drive part extends from the bottom towards the top into the dirt trapping part or entirely through it. The drive part comprises all parts serving for the rotatable bearing of the rotor and the drive part is securely positioned against axial removal with an opened cover.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: May 11, 2010
    Assignee: Hengst GmbH & Co., KG
    Inventors: Dieter Baumann, Karl Grosse Wiesmann, Norbert Prinz
  • Patent number: 7396325
    Abstract: The invention relates to a rotor for a centrifuge, in particular for purifying lubricating oil in an internal combustion engine, wherein said rotor is rotatably mounted in the centrifuge housing and is provided with an impurity trapping element, the rotor or the impurity trapping element thereof are made of a plastic material and remote deflecting baffles arranged in said impurity trapping element can be removed from the centrifuge housing.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: July 8, 2008
    Assignee: Hengst GmbH & Co. KG
    Inventors: Uwe Meinig, Dieter Baumann
  • Patent number: 7314441
    Abstract: A method for separating particulate matter from a fluid includes feeding a fluid containing a particulate matter into a chamber of a vessel through an inlet, the chamber being at least partially bounded by a peripheral wall and the chamber also communicating with a first outlet and a second outlet. The vessel is rotated such that at least a portion of the particulate matter settles out of the fluid against at least a portion of the peripheral wall. At least a portion of the particulate matter settled against the peripheral is subsequently disturbed so that at least a portion of the particulate matter is resuspend within the fluid. The method further includes removing at least a portion of the fluid having the resuspended particulate matter therein through the first outlet and removing through the second outlet the fluid from which the particulate material has settled out.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: January 1, 2008
    Assignee: Econova, Inc.
    Inventor: Kevin E. Collier
  • Patent number: 7288202
    Abstract: A separator and method according to which substances having relatively high densities are separated from a pressurized flow stream.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: October 30, 2007
    Assignee: Dresser-Rand Company
    Inventor: William C. Maier
  • Patent number: 7150836
    Abstract: An apparatus for use in separating, at least in part, a mixture, including at least one chamber and at least one microwave generation device configured for communicating microwave energy into the at least one chamber is disclosed. The rotor assembly may comprise an electric generator for generating electricity for operating the microwave generation device. At least one microwave generation device may be positioned within a tubular interior shaft extending within the rotor assembly. At least a portion of the tubular interior shaft may be substantially transparent to microwave energy. Microwave energy may be emitted in an outward radial direction or toward an anticipated boundary surface defined between a mixture and a separated constituent thereof. A method including flowing a mixture through at least one chamber and communicating microwave energy into the at least one chamber while rotating same is disclosed. Methods of operating a centrifugal separator and design thereof are disclosed.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: December 19, 2006
    Assignee: Battelle Energy Alliance, LLC
    Inventor: David H. Meikrantz
  • Patent number: 7060017
    Abstract: A separator includes a vessel having a peripheral wall bounding a chamber. The vessel is rotatable about a rotational axis extending through the vessel. The chamber communicates with an inlet and a first outlet. A tubular member is disposed within the chamber and communicates external thereof. A plurality of fins are disposed within the chamber. Each of the fins extends from toward the tubular member to toward the peripheral wall. A first tube projects from the tubular member to toward the peripheral wall. The first tube has a second outlet in communication with the chamber. The first outlet is disposed closer to the rotational axis than the second outlet such that during use a fluid boundary line first outlet and the second outlet.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: June 13, 2006
    Assignee: Econova, Inc.
    Inventor: Kevin E. Collier
  • Publication number: 20040192533
    Abstract: A separator includes a vessel having a peripheral wall bounding a chamber. The vessel is rotatable about a rotational axis extending through the vessel. The chamber communicates with an inlet and a first outlet. A tubular member is disposed within the chamber and communicates external thereof. A plurality of fins are disposed within the chamber. Each of the fins extends from toward the tubular member to toward the peripheral wall. A first tube projects from the tubular member to-toward the peripheral wall. The first tube has a second outlet in communication with the chamber. The first outlet is disposed closer to the rotational axis than the second outlet such that during use a fluid boundary line first outlet and the second outlet.
    Type: Application
    Filed: April 9, 2004
    Publication date: September 30, 2004
    Applicant: Econova, Inc.
    Inventor: Kevin E. Collier
  • Patent number: 6719681
    Abstract: A multiple-component fluid mixture is separated by feeding the fluid mixture into a chamber of a vessel through an inlet, the chamber being at least partially bounded by a peripheral wall and the chamber also communicating with an outlet. The fluid mixture includes a heavy component and a light component. The vessel is rotated about a rotational axis extending through the vessel such that the heavy component collects toward at least a portion of the peripheral wall of the vessel and the light component collects toward the rotational axis. The light component is removed through the outlet channel. The heavy component is removed through a conduit disposed within the chamber, the conduit extending from the heavy component toward the rotational axis and out of the vessel.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: April 13, 2004
    Assignee: Econova, Inc.
    Inventor: Kevin E. Collier
  • Publication number: 20040058795
    Abstract: The invention relates to a rotor for a centrifuge intended for the separation of solid particles from a fluid, in particular from the lubricating oil of a Diesel combustion engine, with a rotor housing that is rotatable about a central rotational axis and cylindrical in its basic shape, wherein the rotor housing comprises a fluid inlet, a fluid outlet with one or more propulsion nozzles for driving the rotor by means of the fluid flowing through them, and walls that are provided in and partition the interior region of the rotor.
    Type: Application
    Filed: September 23, 2003
    Publication date: March 25, 2004
    Inventor: Dieter Baumann
  • Patent number: 6551230
    Abstract: A self-driven centrifuge for separating particulate matter out of a circulating liquid includes a stand pipe that is constructed and arranged to deliver fluid. A vane assembly is adapted to receive fluid from the stand pipe. The vane assembly includes a liner and a plurality of vanes. The liner defines an inner cavity and the vanes extends within this inner cavity. Each of the vanes has a radially outer edge portion and integrally formed with the liner and an opposite free edge. The vanes are oriented in a parallel relationship with the stand pipe, and the free edges of the vanes define a stand pipe passage in which the stand pipe is received.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: April 22, 2003
    Assignee: Fleetguard, Inc.
    Inventors: Peter K. Herman, Jean-Luc Guichaoua, Richard Jensen
  • Publication number: 20020119883
    Abstract: A self-driven centrifuge for separating particulate matter out of a circulating liquid includes a base having a pair of tangential jet nozzles for generating the self-driven force for the centrifuge. Connected to the base is a centrifuge shell which defines a hollow interior space. A hollow rotor hub having a central axis of rotation is assembled to the base and extends through the hollow interior space. A support plate is positioned within the hollow interior space and, in cooperation with the rotor hub, defines an annular flow exit opening for the circulating liquid. Positioned within the hollow interior space is a separation vane module which is constructed and arranged so as to extend around the rotor hub and positioned so as to be supported by the support plate. The separation vane module includes a plurality of axially-extending and spaced-apart separation vanes.
    Type: Application
    Filed: December 20, 2001
    Publication date: August 29, 2002
    Inventors: Peter K. Herman, Richard Jensen, Shirley Ann Jensen
  • Patent number: 6440054
    Abstract: Liquid—liquid extraction apparatus includes a separator tank rotatable about an axis extending through the tank, a tank inlet for a mixture of two liquids of different densities and which are substantially insoluble in each other, a tank outlet on the axis of rotation for the light liquid, and a tank outlet spaced from the axis of rotation for the heavy liquid. In terms of method, a mixture of the two liquids is rotated about an axis extending through the mixture to cause the light liquid to concentrate at the axis of rotation, and to cause the heavy liquid to concentrate at the periphery of the rotating liquid. The light liquid is removed from the body of liquid along a flow path co-linear with the axis, and the heavy liquid is removed from the periphery of the rotating body of liquid.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: August 27, 2002
    Inventor: George M. Galik
  • Publication number: 20020068676
    Abstract: A multiple-component fluid mixture is separated by feeding the fluid mixture into a chamber of a vessel through an inlet, the chamber being at least partially bounded by a peripheral wall and the chamber also communicating with an outlet. The fluid mixture includes a heavy component and a light component. The vessel is rotated about a rotational axis extending through the vessel such that the heavy component collects toward at least a portion of the peripheral wall of the vessel and the light component collects toward the rotational axis. The light component is removed through the outlet channel. The heavy component is removed through a conduit disposed within the chamber, the conduit extending from the heavy component toward the rotational axis and out of the vessel.
    Type: Application
    Filed: January 25, 2002
    Publication date: June 6, 2002
    Applicant: Econova Inc.
    Inventor: Kevin E. Collier
  • Publication number: 20020045526
    Abstract: A self-driven centrifuge for separating particulate matter out of a circulating liquid includes a stand pipe that is constructed and arranged to deliver fluid. A vane assembly is adapted to receive fluid from the stand pipe. The vane assembly includes a liner and a plurality of vanes. The liner defines an inner cavity and the vanes extends within this inner cavity. Each of the vanes has a radially outer edge portion and integrally formed with the liner and an opposite free edge. The vanes are oriented in a parallel relationship with the stand pipe, and the free edges of the vanes define a stand pipe passage in which the stand pipe is received.
    Type: Application
    Filed: July 20, 2001
    Publication date: April 18, 2002
    Inventors: Peter K. Herman, Jean-Luc Guichaoua, Richard Jensen
  • Patent number: 6346069
    Abstract: A solid-liquid/liquid-liquid separator includes a vessel having a peripheral wall bounding a chamber. The chamber communicates with an inlet port and an outlet port. The vessel is rotatable about a rotational axis extending through the vessel. Disposed within the chamber are a plurality of fins. Each of the fins radially outwardly projecting from the rotational axis in substantially parallel alignment with the rotational axis. The fins interact with the peripheral wall to form a plurality of discrete flow channels that longitudinally extend through the vessel. An exit tube is disposed along a portion of the rotational axis of the vessel. The exit tube has a first end disposed within the chamber and an opposing second end in fluid communication with the exterior of vessel. A plurality of extraction tubes radially outwardly projecting from the rotational axis within the chamber.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: February 12, 2002
    Assignee: Separation Process Technology, Inc.
    Inventor: Kevin E. Collier
  • Publication number: 20010029227
    Abstract: A self-driven centrifuge for separating particulate matter out of a circulating liquid includes a base having a pair of tangential jet nozzles for generating the self-driven force. Connected to the base is a centrifuge shell which defines a hollow interior space. A disposable liner is positioned within the centrifuge shell. A hollow rotor hub is assembled to the base and extends through the hollow interior space. A support plate is positioned within the hollow interior space and, in cooperation with the rotor hub, defines an annular flow exit. Positioned within the hollow interior space is a unitary separation vane module which is constructed and arranged so as to extend around the rotor hub. The separation vane module includes a plurality of axially-extending and spaced-apart separation vanes. In one embodiment the vane module and a liner shell are formed as a unitary component.
    Type: Application
    Filed: February 2, 2001
    Publication date: October 11, 2001
    Inventors: Peter K. Herman, Richard Jensen, Shirley Ann Jensen
  • Patent number: 5944992
    Abstract: The invention relates generally to a screen used for separating lubricants from solid materials, and more particularly, to a centrifugal parts separator having a screen which assists in separating lubricants from metal or other scrap materials. The screen of the present invention preferably comprises a cylindrical shaped member which can be formed in one or more component parts with a plurality of spaced fluid passage openings therein. The screen is made so that the ratio of the distance between the openings to the median width of the openings is at least 18/1, thereby providing increased surface wear area of the screen.
    Type: Grant
    Filed: September 10, 1997
    Date of Patent: August 31, 1999
    Assignee: Inter-Source Recovery Systems, Inc.
    Inventors: William D. Nemedi, Robert J. Nemedi
  • Patent number: 5908376
    Abstract: A self-cleaning rotor assembly for a centrifugal separator can be thoroughly cleaned of accumulated solids without disassembly of the separator. The rotor assembly comprises a fully welded, enclosed rotor body. The rotor assembly has a double-ended, hollow axial shaft. The bottom end of the axial shaft extends through the separator housing and has a high pressure fluid coupling. A plurality of spray nozzles are fitted to the axial shaft within the rotor body. The spray nozzles are arranged to spray a washing fluid radially onto the interior surfaces of the rotor. The interior volume of the rotor is divided into a plurality of chambers by a corresponding plurality of axial vanes. At least one nozzle is disposed within each of the chambers.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: June 1, 1999
    Assignee: Costner Industries Nevada, Inc.
    Inventors: Lawrence L. Macaluso, David H. Meikrantz
  • Patent number: 5484383
    Abstract: An orbital separator for separating denser and lighter components of a mixture employing a separation container having an inlet end and an outlet end. An inlet tube is secured to the separation container inlet end and communicates between the exterior and interior of the separation container. In like manner, an outlet tube is secured to the separation container outlet end and communicates between the exterior and interior of the separation container. The inlet and outlet tubes are coaxial and each are rotationally supported to thereby rotationally support the separation container. Formed in the outlet end of the separation container and surrounding the outlet tube is an annular denser component discharge opening. Positioned externally of the separation container outlet end is a closure member that can be moved towards and away from the discharge opening to thereby vary the area of the discharge opening, so that thereby the performance characteristics of the separator can be varied.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: January 16, 1996
    Assignee: Bardyne, Inc.
    Inventors: Ernest C. Fitch, Jr., Ing T. Hong
  • Patent number: 5383941
    Abstract: A scroll liner for use in the discharge housing of a centrifugal separator device. The scroll liner comprises a plurality of segments which are replaceable in the event of excessive wear. The segments are of a length which is less than the space between adjacent blades having blade portions located in the discharge housing such that a segment can be removed from the separator device in the space formed by adjacent blades.
    Type: Grant
    Filed: August 26, 1993
    Date of Patent: January 24, 1995
    Assignee: Inter-Source Recovery Systems, Inc.
    Inventor: William D. Nemedi
  • Patent number: 5370600
    Abstract: An orbital separator for separating lighter and heavier components of a mixture including a rotatable cylindrical separation container with an opening in the bottom, an upper inlet tube coaxial with the separation container for discharging a mixture into the separation container, a tubular outlet member communicating with the opening in the separation container bottom and extending coaxially upwardly in the separation container defining a moat area within the separation container lower portion, and a removable liner within the separation container moat area for collecting the heavier components of a mixture, the lighter components flowing out through the tubular outlet member.
    Type: Grant
    Filed: January 7, 1994
    Date of Patent: December 6, 1994
    Assignee: Bardyne, Inc.
    Inventors: Ernest C. Fitch, Jr., Ing T. Hong
  • Patent number: 5362292
    Abstract: A centrifugal separator of the type including a rotor, which is supported by a driving shaft and which forms a separation chamber and an inlet chamber. The inlet chamber being delimited by a dividing wall. An inlet tube extends axially through the dividing wall at one axial end of the inlet chamber at which the inlet channel in the tube opens. In the inlet chamber there is arranged a number of separating discs. A central part of the inlet chamber is connected to an outside space through an evacuating channel. In order to efficiently and gently separate a supplied liquid mixture without demanding a large space in the centrifugal separator, the inlet device is provided with a baffle which, between the opening of the inlet channel and the discs, extends from the rotational axis of the rotor and delimits a liquid filled inlet space. The liquid in the inlet space flowing during operation from the inlet channel radially outwards into the liquid body.
    Type: Grant
    Filed: March 4, 1994
    Date of Patent: November 8, 1994
    Assignee: Alfa-Laval Separation AB
    Inventors: Leonard Borgstrom, Claes-Goran Carlsson, Peter Franzen, Claes Inge, Torgny Lagerstedt, Hans Moberg, Olle N.ang.bo
  • Patent number: 5330637
    Abstract: An indexable separator screen for use with a rotatable centrifugal separator device in which the screen is adapted to be moved relative to the bowl so that one or more wear areas on the screen can be moved from at least a first position to a second position relative to the bowl.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: July 19, 1994
    Assignee: Inter-Source Recovery Systems, Inc.
    Inventor: Robert J. Nemedi
  • Patent number: 5227066
    Abstract: A centrifugal separation method for living cells is disclosed in which a cell containing solution is charged in a rotor chamber confined by a steam pressure-resistant wall. A rotor having septa is disposed in the rotor chamber. The septa are rotatable in the same direction at the same angular velocity as the rotor while at least part thereof is immersed in a solution in the rotor when cells are to be centrifuged from the cell-containing solution. After the cells are separated and adhered to the inner surface of the rotor, a supernatant in the rotor is discharged form the rotor. Then a fresh cultivating medium is introduced into the rotor, and the septa and the rotor are rotated at mutually different angular velocities while at least part of the septa is immersed in the fresh medium in the rotor. As a result, the cells are again suspended in the fresh medium.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: July 13, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Masahiko Ishida, Ryoichi Haga, Harumi Matsuzaki
  • Patent number: 4976678
    Abstract: A centrifugal separator which enables extraction of particles as concentrated liquid of a uniform concentration under a low pressure without damaging to the particles and is particularly suitable for extraction of weak cells such as animal cells. The centrifugal separator includes a plurality of particle collecting chambers (104: 104a) partially defined by an inner wall face (121) of a rotor (103) the diameter of which increases substantially continuously and suddenly comparing with the diameter of another adjacent portion for the inner wall face of the rotor. Particles centrifugally separated from liquid in a separating chamber (109) in the rotor are introduced into the particle collecting chambers in which they are accelerated suddenly to form soil suspension having an increased fluidity. The soil suspension is then introduced into horizontally extending deriving pipes (105: 105a: 105b: 105c: 105d: 105e) of a small sectional area and then extracted to the outside by way of an extracting pipe (118).
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: December 11, 1990
    Assignee: Meiji Milk Products Co., Ltd.
    Inventors: Yutaka Suginaka, Shigeru Taniguchi
  • Patent number: 4950220
    Abstract: A throughput centrifuge for the industrial production of proteins from human blood plasma, with a cylindrical centrifuge drum provided with several concentric chambers that communicate at the bottom and with the blood plasma or similar material being supplied to the central zone and a liquid phase continuously extracted from the outer zone. The drum accordingly accommodates plastic containers constituting concentric annular or annular-segmental chambers that communicate through at least one channel at the bottom, wherein the container or containers toward the axis that the drum rotates around have an inlet connection and the container or containers in the outer zone of the drum have an outlet channel at the top, and wherein the outer surfaces of the containers, of the communicating channel or channels, of the outlet channel or channels, and of the inlet connection or connections rest against the inner surfaces of the drum and against structures that can be inserted into and removed from the drum.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: August 21, 1990
    Assignee: Westfalia Separator AG
    Inventors: John R. Wells, Gunthard Pautsch, Detlef Grabbe, Werner Kohlstette
  • Patent number: 4936822
    Abstract: A separator bowl and blade assembly for a centrifugal separator device in which a rotatable separator bowl has a plurality of recesses therein and a blade assembly or blank is adapted to be releasably disposed in the recesses. The blade assembly includes a pad having a structural configuration which corresponds and mates with the bowl recess. A blade extends outwardly from the pad and is connected to a bottom pad portion and an outwardly extending pad portion with the blade assembly being either an integral or releasably connected assembly.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: June 26, 1990
    Assignee: Inter-Source Recovery Systems, Inc.
    Inventor: William D. Nemedi
  • Patent number: 4932933
    Abstract: In a centrifuge device whose purpose is in particular the separation of amalgam from waste water generated in dentist' offices, the following is provided in order to improve the determination of the filling level in a collecting tank downstream from a centrifuge, to obtain better utilization of the container volume, to reduce the residual moisture in the separated solids, and to simultaneously eliminate the repumping means which operate between the collecting tank and the centrifugal. The collecting tank is detachably attached to a centrifuge drum and rotates together with the centrifuge, with measures being taken for separating the clean-water space from the centrifuge drum, there is also provided a transport container which can be detached from the device together with a collecting tank, which container can, when the collecting tank is in it, be closed by means of a cover which, when it is not in use, is detachably attached to the transport container.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: June 12, 1990
    Assignee: EMDA Fabrik elektromedizinischer and dentaler Apparate Georg Hartmann GmbH & Co. KG
    Inventors: Ernst Becker, Manfred Pausch, Horst Panzer
  • Patent number: 4784635
    Abstract: In the continuous-operation centrifuge drum for concentrating suspended solids the solids are conveyed to a central chamber from a solids space through channels. Before the solids arrive in the central chamber, they must travel through an unribbed annular space. Since the solids concentrate tends to increase its existing kinetic energy, a higher flow resistance is generated. As viscosity increases, the solids, however, are more powerfully affected by friction in the unribbed annular space, their kinetic energy decreases, and the flow resistance decreases. The resulting increase in the volume of solids extracted also decreases its concentration and hence its viscosity. This behavior of the solids in the unribbed annular space of a rotating drum results in automatic regulation of the solids concentration.
    Type: Grant
    Filed: April 16, 1987
    Date of Patent: November 15, 1988
    Assignee: Westfalia Separator AG
    Inventors: Paul Bruning, Wilfried Mackel, Ulrich Wrede
  • Patent number: 4721505
    Abstract: In a centrifuge having a rotor, an inlet structure has a stack of annular discs and a conduit supplying liquid to a receiving chamber formed centrally in the disc stack. The liquid mixture to be separated is caused to flow in thin layers in the passages between the discs, and by friction with the discs is accelerated to the rotational speed of the rotor. Liquid is supplied to the receiving chamber in such a way that a continuous liquid phase is maintained between the mixture in the supply conduit and in the receiving chamber.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: January 26, 1988
    Assignee: Alfa-Laval Separation AB
    Inventors: Claes Inge, Torgny Lagerstedt, Leonard Borgstroem, Claes-Goeran Carlsson, Sven-Olof Naebo, Hans Moberg, Peter Franzen
  • Patent number: 4701158
    Abstract: A centrifugal separator has a rotor with an inlet device comprising means forming a receiving chamber that surrounds a stationary inlet tube extending into the rotor. The inlet tube opens into a receiving compartment of the receiving chamber. The receiving chamber also has an induction compartment which surrounds the inlet tube at some distance from its opening.A deflecting member separates the receiving compartment from the induction compartment and leaves a passage between itself and the inlet tube. Induction members connected with the rotor are operable to induce liquid rotation in the induction chamber radially outside the level of said passage between the deflecting member and the inlet tube, whereas no substantial induction of rotation should take place in the receiving compartment.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: October 20, 1987
    Assignee: Alfa-Laval Separation AB
    Inventors: Claes Inge, Torgny Lagerstedt, Leonard Borgstroem, Claes-Goeran Carlsson, Sven-Olof Naebo, Hans Moberg, Peter Franzen
  • Patent number: 4695270
    Abstract: A drum for clarifying and separating centrifugates. It has at least one skimmer for diverting the clarified or separated centrifugates, a stationary inlet pipe extending into an inlet chamber, which rotates along with the drum, through an aperture that is slightly wider than the inlet pipe, outlets extending from the inlet chamber into a vestibule that communicates with channels ascending through a set of nested plates within the drum, and, upstream of the inlet chamber, an annular space that communicates with the inlet chamber through an annular channel.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: September 22, 1987
    Assignee: Westfalia Separator AG
    Inventor: Karl-Heinz Zettier
  • Patent number: 4673491
    Abstract: Separating elements (14) arranged about a central shaft (1a) rotate in common about the main axis (A) and individually about their longitudinal axes (B). A centrifugal distributor (6) distributes fine-grain mineral mixture mixed with fluid uniformly to the separating elements (14). In each separating element (14) the partial material flow (2a) is set in rotation about the longitudinal axis (B) by entrainment vanes (18) arranged in a first separating element section (15a) and the heavy fraction is centrifuged on to the separator wall (16a). In the second section (15b), formed as conical tubular worm conveyor, which contains no entrainment vanes, the heavy fraction is transported to the collecting chamber (21) and discharged through first discharge openings (22), the fine-grain mineral mixture being fluidized in pulsation on the separating wall (16b) by the combined rotating movements and the heavy fraction being concentrated.
    Type: Grant
    Filed: April 23, 1985
    Date of Patent: June 16, 1987
    Assignee: Miset AG
    Inventor: Walter Sedlaczek
  • Patent number: 4413773
    Abstract: A blood bag is described which aids in maintaining the separation of blood components. This bag is constructed of a flexible plastic, has a conical top leading to an outlet line and internal septa to reduce swirling of the bag's contents during rotor deceleration. The bag is adapted to be placed in a split sleeve prior to placement in the swinging bucket of a centrifuge rotor. A collar is placed over the top of the bag to aid in reducing wrinkles in the bag.Methods are described for reducing contamination of separated blood components by reducing bag wrinkles, reducing swirling of the blood fractions during rotor deceleration, and reducing mixing during expression.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: November 8, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Vernon C. Rohde, William A. Romanauskas
  • Patent number: 4413771
    Abstract: A blood bag is described which aids in maintaining the separation of blood components. This bag is constructed of a flexible plastic, has a conical top leading to an outlet line and internal septa to reduce swirling of the bag's contents during rotor deceleration. The bag is adapted to be placed in a split sleeve prior to placement in the swinging bucket of a centrifuge rotor. A collar is placed over the top of the bag to aid in reducing wrinkles in the bag.Methods are described for reducing contamination of separated blood components by reducing bag wrinkles, reducing swirling of the blood fractions during rotor deceleration, and reducing mixing during expression.
    Type: Grant
    Filed: September 10, 1979
    Date of Patent: November 8, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Vernon C. Rohde, William A. Romanauskas
  • Patent number: 4413772
    Abstract: A blood bag is described which aids in maintaining the separation of blood components. This bag is constructed of a flexible plastic, has a conical top leading to an outlet line and internal septa to reduce swirling of the bag's contents during rotor deceleration. The bag is adapted to be placed in a split sleeve prior to placement in the swinging bucket of a centrifuge rotor. A collar is placed over the top of the bag to aid in reducing wrinkles in the bag.Methods are described for reducing contamination of separated blood components by reducing bag wrinkles, reducing swirling of the blood fractions during rotor deceleration, and reducing mixing during expression.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: November 8, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Vernon C. Rohde, William A. Romanauskas
  • Patent number: 4406651
    Abstract: A centrifuge apparatus (10) for separating multi-phase fluid is disclosed. The centrifuge apparatus (10) includes a bowl-like structure (12) rotatably mounted in a housing (14) for rotation about a vertical axis. The centrifuge apparatus (10) further includes means for introducing multi-phase fluid into the bowl (12) and means for driving the bowl (12) at a predetermined rotation speed. A rotor assembly is coaxially mounted in the bowl (12) for rotation therewith to accelerate or impel the multi-phase fluid such that the fluid is separated into heavier phase fluid and lighter phase fluid with solid particles being collected on the inner surface of a bowl side wall portion (16).A top wall member (18) of the bowl (12) defines axially directed openings (50) therein for discharging the heavier phase fluid. Discharge means positioned in the cylindrical side wall portion (16) extend radially into the interior of the bowl (12) for discharging the lighter phase fluid.
    Type: Grant
    Filed: April 15, 1982
    Date of Patent: September 27, 1983
    Assignee: Donaldson Company, Inc.
    Inventors: Denis J. Dudrey, John T. Herman, Bernard A. Matthys
  • Patent number: RE35307
    Abstract: A separator bowl and blade assembly for a centrifugal separator device in which a rotatable separator bowl has a plurality of recesses therein and a blade assembly or blank is adapted to be releasably disposed in the recesses. The blade assembly includes a pad having a structural configuration which corresponds and mates with the bowl recess. A blade extends outwardly from the pad and is connected to a bottom pad portion and an outwardly extending pad portion with the blade assembly being either an integral or releasably connected assembly.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: July 30, 1996
    Assignee: Inter-Source Recovery Systems, Inc.
    Inventor: William D. Nemedi
  • Patent number: RE44213
    Abstract: The invention concerns a separator, wherein the mixture, after passing through the inlet channels of the container body (1), penetrates into the admission chamber (30) of the rotor (2), where blades (35) arranged in star formation and perpendicular to the axis of rotation produce a centrifugal propulsion and, further, compact the components with greater density, thus facilitating extraction thereof. The thus modified mixture passes into the separating chamber (31), where blades (36) arranged in star formation and parallel to the axis of rotation, through their centrifugal force, push the components with greater density outwards; the latter having penetrated into the collecting cells (41) of the grid (34) which is coated on the outside of the separating chamber, through holes (42) exit from the rotor upon reaching the accumulation chamber (13). The fluid medium which, countered by a suitable pressure, cannot penetrate into the accumulation chamber, exit through evacuation channels.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: May 14, 2013
    Inventor: Luigi Pietro Della Casa