Vertically-oriented, And Including Structural Provision For Bottom Entry Of Material Patents (Class 494/65)
  • Patent number: 9108148
    Abstract: Herein disclosed is an apparatus that includes a porous rotor positioned about an axis of rotation and surrounding an interior space, wherein the porous rotor includes sintered metal or ceramic; an outer casing, wherein the outer casing and the porous rotor are separated by an annular space; and a motor configured for rotating the porous rotor about the axis of rotation.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: August 18, 2015
    Assignee: H R D Corporation
    Inventors: Abbas Hassan, Rayford G. Anthony, Aziz Hassan
  • Patent number: 8636634
    Abstract: Disclosed are a reaction and separation processor and a process for producing biodiesel. The processor is comprised of a stationary casing and a rotor located internal to the casing, with a gap formed between the rotor and casing. A fluid inlet port is located at the upper end of the casing for delivering fluid, which is used to produce the biodiesel, into the reaction zone of the processor, in which the reaction zone is defined as a gap between an upper portion of the rotor and casing. Surface irregularities for inducing fluid turbulence in the reaction zone are located on an inner surface of the casing, an outer surface of the rotor, or both. A rotor inlet port is located at a lower end of the rotor for directing fluid from the reaction zone into the separation zone, which is located within the rotor.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: January 28, 2014
    Assignee: RASP Technologies, LLC
    Inventors: Mark Allen, Robert Miller
  • Patent number: 8475352
    Abstract: A hermetically sealed solids discharge centrifugal separator having a separator bowl with a cylindrical upper portion and a conical lower portion, an inlet port at the bottom of the bowl and an outlet port at the top of the bowl. A disposable liner assembly includes a bowl liner having a cylindrical upper portion and conical lower portion, such that the bowl liner can conform to the interior surface of the separator bowl. The liner assembly further includes a piston within the bowl liner, the piston having an upper portion that conforms to the bowl liner cylindrical upper portion and a lower portion that conforms to the bowl liner conical lower portion. A fluid pathway extends through the piston, with a shuttle valve disposed within the fluid pathway.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: July 2, 2013
    Assignee: Wagner Development, Inc.
    Inventor: Robert B. Carr
  • Publication number: 20120108413
    Abstract: A separator in which a product such as milk is to be processed, the separator includes: a centrifugal drum; an admission tube; a distributor including an admission chamber located downstream of the admission tube and distribution channels leading into a centrifugal chamber of the centrifugal drum. A rib body is located in the admission chamber and the rib body provides an outlet to the distributor channels. The rib body includes a plurality of ribs and a base section connecting the plurality of ribs along a periphery of the base section.
    Type: Application
    Filed: July 9, 2010
    Publication date: May 3, 2012
    Applicant: GEA MECHANICAL EQUIPMENT GMBH
    Inventor: Wilfried Mackel
  • 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
  • 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: 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
  • 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 MeriƱo, Steven J. Dalessio, Robin Roy Louis Rudy Otten
  • 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
  • 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
  • Publication number: 20080128367
    Abstract: The inventive method for centrifugal separation of a determined volume of physiological liquid, in particular blood, at initial process step, consists in forming a flow of said liquid whose thickness is close to the size of largest particles (L3) contained therein at a volume ratio of <1%, in decelerating said liquid flow in order to increase the thickness thereof and to transfer said largest particles (L3) to the surface of the liquid phase (L1) which is nearest to a centrifugation axis and whose density is the greatest, in arranging, outside of said surface, a dead volume whose capacity is substantially equal to the volume of said largest particles (L3) and in removing a phase (L2) whose density is the lowest.
    Type: Application
    Filed: February 1, 2006
    Publication date: June 5, 2008
    Inventor: Jean-Denis Rochat
  • 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: 7134991
    Abstract: An annular centrifugal extractor with an immersed agitation rotor. The liquid-liquid centrifugal extractor including an emulsion chamber and a settling chamber, aligned because of the addition of a section of axis to the rotor, which allows flow and operation to be regularized, especially by allowing the dimensions of the chambers to be selected more freely.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: November 14, 2006
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Patrick Rivalier, Jean Duhamet, Florent Gandi
  • Patent number: 7118521
    Abstract: A centrifugal separator has a centrifugal rotor that is rotatable about a vertical axis and has both a rotor body for separation of two liquids, having different densities, and a pumping member that is designed to pump via the outside of a conical body a mixture of said two liquids into the rotor body from a surface layer of a liquid body situated below the rotor body.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: October 10, 2006
    Assignee: Alfa Laval Corporate AB
    Inventors: Leonard Borgstrom, Claes-Goran Carlsson, Peter Franzen, Claes Inge, Torgny Lagerstedt, Hans Moberg, Stefan Szepessy
  • 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: 6984200
    Abstract: A centrifugal separator 110 (FIG. 1) for removing contaminants from a pumped liquid such as engine lubricant, having a separation rotor 130 rotatable about axis 124 at high speed by a jet 178 of the liquid impinging upon impulse turbine blades 174. The rotor includes a separation and containment vessel 132 having impervious side wall 134 spaced from the rotation axis and at least one end wall 138 open at 142 permit liquid to leave the vessel as fast as it can enter, so that a zone 140 is defined adjacent side wall 134 that holds a volume of liquid much less than the whole volume encompassed by the vessel walls and filled in conventional high speed separators. Lower inertia and reduced pressure gradients in the liquid permit it to be spaced further from the axis than is conventional, with improved separation efficiency.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: January 10, 2006
    Assignee: Mann & Hummel GmbH
    Inventor: Andrew Leonard Samways
  • Patent number: 6955637
    Abstract: In a separation device for separating particles from a liquid, which is present in a container, a centrifugal rotor is rotatable around a vertical rotational axis. The centrifugal rotor has a tubular inlet member, which extends down into liquid to be treated and which upon rotation of the centrifugal rotor forms a pumping member adapted to pump liquid upwardly and into the centrifugal rotor. The rotatable inlet member is surrounded by a non-rotatable wall, a sealing device being adapted to seal between the rotatable inlet member and the non-rotatable wall. Thereby is avoided that liquid is pumped upwardly on the outside of the inlet member. Furthermore, a smallest possible part of the outside of the inlet member can be in contact with liquid, independent of the level of the liquid surface in the container.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: October 18, 2005
    Assignee: Alfa Laval AB
    Inventors: Jesus Montano, Rolf Ridderstrale, Klaus Hans Dieter Stroucken
  • Patent number: 6802804
    Abstract: To clean a relatively heavy liquid from small amounts of relatively light liquid the liquids are first introduced into a container, in which the light liquid is allowed to collect on the surface of the heavy liquid. A surface layer of the liquid body in the container, constituting a mixture of the two liquids, is caused to flow over an overflow outlet member into a collecting chamber. From the collecting chamber the liquid mixture is pumped further into a centrifugal separator, wherein the relatively light liquid is separated from the relatively heavy liquid. According to the invention the liquid mixture is pumped from the collecting chamber to the centrifugal separator through a pumping member, which is connected with a rotor of the centrifugal separator and, thus, rotates therewith.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: October 12, 2004
    Assignee: Alfa Laval AB
    Inventor: Klaus Hans Dieter Stroucken
  • Patent number: 6776752
    Abstract: A centrifugal separator provides for discharge of solids by either an axial-motion scraper or a piston/extrusion assembly. The axial-motion scraper (80) is used with hard-packed or friable solids, and includes and integral feed liquid accelerator and feed holes. The piston/extrusion assembly is used with pasty solids, and includes a piston (12) extending into a bowl (10) and having openings (45) permitting fluid communication across the piston. After separation is complete, a centrate valve (34) closes one end of the bowl, and the piston is moved axially in the bowl by an actuator. A bowl suspension employs a spherical mounting structure (96) and a short spindle (98). A bearing (100) and the spindle (102) of the bowl are mounted within the bearing housing. The suspension is retained by a ring and retaining member secured to the separator in compressive contact with the spherical portion of the bearing housing.
    Type: Grant
    Filed: April 14, 2003
    Date of Patent: August 17, 2004
    Assignee: Wagner Development, Inc.
    Inventor: Robert B. Carr
  • Patent number: 6740027
    Abstract: A solid bowl centrifuge with liquid release during rotation includes a frame, solid bowl, drive device, scraper assembly, slurry spray, and liquid collection trough. The solid bowl includes a centrifuge chamber, and a liquid evacuation chamber. A plurality of openings are formed on the outer wall of the liquid evacuation chamber. The solid bowl is pivotal retained in the frame. The liquid collection trough is disposed around the liquid evacuation chamber. The drive device causes the solid bowl to rotate. Slurry is sprayed on to the wall of the centrifuge chamber while in rotation and eventually scraped-off the wall of the centrifuge chamber. A second embodiment of the solid bowl centrifuge with liquid release during rotation utilizes at least three bearing wheels to support an outer perimeter of the solid bowl at a bottom thereof. The liquid evacuation chamber is replaced with a liquid ring attached to a bottom of the centrifuge chamber and a liquid collection trough disposed around the liquid ring.
    Type: Grant
    Filed: April 20, 2002
    Date of Patent: May 25, 2004
    Inventor: Ronald D. Benson
  • Publication number: 20040097358
    Abstract: A filter may have a housing with an inlet and an outlet. A shaft may be rotatably supported in the housing. A rotor may be attached to the shaft, the rotor having an inlet and an outlet. A plurality of members may be attached to the rotor, and a plurality of chambers may be defined in the rotor. The plurality of chambers are placed relative to the members to direct fluid in successive relation across the plurality of members as the fluid commutes between the inlet and the outlet of the rotor.
    Type: Application
    Filed: November 20, 2002
    Publication date: May 20, 2004
    Inventor: Thomas J. Hajek
  • Patent number: 6699169
    Abstract: A centrifugal extractor has a rotor supported rotatably in a housing 10, and an aqueous phase liquid and an organic phase liquid are supplied to the outer circumference of the rotor and mixed between the housing and the rotor. A mixed phrase liquid is sucked into the rotor and is separated into two phases in a centrifugal force field generated in the inside of the rotor, and the separated aqueous phase liquid and organic phase liquid are discharged to an aqueous phase collector 50 and an organic phase collector 44, respectively. A cavity portion is provided in the center of the rotor, and a neutron absorption body 60 is disposed in the cavity portion. Preferably, the rotor has a lower rotating and supporting mechanism (such as a sliding bearing 66), and a neutron absorption material is sealed into the lower rotating and supporting mechanism. By such a centrifugal extractor, criticality safety and durability can be enhanced, even when the extractor is designed to be larger-size and larger-capacity.
    Type: Grant
    Filed: February 3, 2003
    Date of Patent: March 2, 2004
    Assignee: Japan Nuclear Cycle Development Institute
    Inventors: Hideki Ogino, Tadahiro Washiya
  • Publication number: 20040023779
    Abstract: A centrifugal extractor wherein a rotor is supported rotatably in a housing 10, an aqueous phase and an organic phase are supplied to the outer circumference of the rotor and mixed between the housing and the rotor, a mixed phase is sucked into the rotor and is separated into two phases in a centrifugal force field generated in the inside of the rotor, and the separated aqueous phase and organic pahse are discharged to an aqueous phase collector 50 and an organic phase collector 44, respectively. A cavity portion is provided in the center of the rotor, and a neutron absorption body 60 is disposed making use of the cavity portion. Preferably, a lower rotating and supporting mechanism (such as a sliding bearing 66) of the rotor is disposed, and a neutron absorption material is sealed into the lower rotating and supporting mechanism. By such a centrifugal extractor, criticality safety and durability can be enhanced, even when it is designed to be larger-size and larger-capacity.
    Type: Application
    Filed: February 3, 2003
    Publication date: February 5, 2004
    Inventors: Hideki Ogino, Tadahiro Washiya
  • Publication number: 20030195105
    Abstract: A centrifugal separator provides for automatic discharge of solids by either an axial-motion scraper or a piston/extrusion assembly. The axial-motion scraper is used with hard-packed or friable solids, and includes an integral feed liquid accelerator and feed holes. The piston/extrusion assembly is used with pasty solids, and includes a piston extending into a separator bowl and having openings permitting fluid communication across the piston. After high-speed separation is complete, a centrate valve closes one end of the bowl, and the piston is moved axially in the bowl by an actuator. Accumulated solids are scraped from the sides of the bowl and extruded out of the piston openings for discharge from the bowl. A bowl suspension employs a spherical mounting structure and a short, stiff spindle. A spherical portion of a bearing housing is mounted in a spherical mounting region at one end of the separator, with a cylindrical portion of the bearing housing extending along the rotational axis.
    Type: Application
    Filed: April 14, 2003
    Publication date: October 16, 2003
    Applicant: R. B. CARR ENGINEERING, INC.
    Inventor: Robert B. Carr
  • Patent number: 6632166
    Abstract: A centrifugal separator includes a rotatable separator bowl, a hollow shaft spindle in the bowl along the rotational axis of the bowl, and a variable-drive motor for selectively rotating the bowl at a high separating speed and at a lower scraping speed. A scraper and feed assembly including scraper blades is supported by the shaft spindle within the separator bowl. A feed liquid is supplied to the separator bowl via the scraper and feed assembly at substantially the interior surface of the separator bowl. The scraper assembly rotates with the bowl at the separating speed while centrate is drawn off. While the bowl is operated at the scraping speed, the scraper assembly is prevented from rotating with the bowl and is moved axially with respect to the bowl to scrape accumulated solids from the interior surface of the bowl. Loosened solids exit the centrifuge via a discharge port at the bottom of the bowl.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: October 14, 2003
    Inventor: Robert B. Carr
  • Patent number: 6616590
    Abstract: There is provided a centrifugal separator for solid-liquid separations. The centrifugal separator comprises (a) an accelerator rotatable at an angular velocity, &ohgr; about an axis, and having an inside surface with a point on the axis, and (b) a nozzle for introducing a feed stream at a volumetric flow rate (Q) into the accelerator via an orifice. The orifice is substantially centered about the point, and the orifice has an inner diameter (d) within the range of approximately 0<d≦4&dgr;, where &dgr;=1.414 [(4Q/&pgr;2&ohgr;)1/3].
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: September 9, 2003
    Assignee: Kendro Laboratory Products, LP
    Inventors: Stephen B. Kessler, Robert B. Carr, Gary W. Brown, Sr.
  • Patent number: 6475132
    Abstract: A disk centrifuge having an intake device which includes two mutually separated intakes which are concentric with respect to the axis of rotation of the centrifugal drum and lead from opposite ends into a common distributor in the centrifugal drum. In a process for operating the centrifuge, the intake pressure at the upper intake tube is adjusted to be lower than the discharge pressure at the liquid discharge without a separating disk.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: November 5, 2002
    Assignee: Westfalia Separator Food Tec GmbH
    Inventor: Karl-Heinz Zettier
  • 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: 20020082154
    Abstract: There is provided a centrifugal separator for solid-liquid separations. The centrifugal separator comprises (a) an accelerator rotatable at an angular velocity,&ohgr; about an axis, and having an inside surface with a point on the axis, and (b) a nozzle for introducing a feed stream at a volumetric flow rate (Q) into the accelerator via an orifice.
    Type: Application
    Filed: May 18, 2001
    Publication date: June 27, 2002
    Inventors: Stephen B. Kessler, Robert B. Carr, Gary W. Brown
  • Patent number: 6363611
    Abstract: A five-part rotor assembly is easily disassembled for cleaning and/or sterilization. The five parts comprise a rotor sleeve, a rotor head, a weir plate, a rotor cover and an internal vane package. Each of these parts is machined as a unitary piece or otherwise fabricated without weldments.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: April 2, 2002
    Assignee: Costner Industries Nevada, Inc.
    Inventors: Bret V. Sheldon, William D. Flim, Gilbert Mendoza, Lawrence L. Macaluso
  • Publication number: 20020016243
    Abstract: A centrifugal separator is provided which maximizes solids recovery yield and separated solids dryness with minimal user intervention. The centrifugal separator includes a rotatable separator bowl, which is selectively rotatable and supported by a hollow shaft spindle. A scraper and feed assembly including a plurality of scraper blades is supported by the shaft spindle within the separator bowl. A feed liquid is supplied to the separator bowl from the scraper blades at substantially the interior surface of the separator bowl so that the feed liquid is gradually accelerated upon entering the separator bowl. High speed operation of the centrifugal separator is performed to generate separation forces as high as 30,000 g's at the interior surface of the separator bowl. This allows the feed liquid to be safely and effectively separated at lower stress levels within the separator bowl.
    Type: Application
    Filed: June 29, 2001
    Publication date: February 7, 2002
    Inventor: Robert B. Carr
  • Patent number: 6056685
    Abstract: A centrifuge includes a frame, a hollow spindle supported by the frame for rotation about an axis, a bowl including a shell fixed to the spindle for rotation with the spindle, a shaft situated within and movable with respect to the hollow spindle, and a conveyor fixed to the shaft including a scroll situated adjacent an inner surface of the bowl shell. A harmonic drive unit including a housing is fixed to an end of the hollow spindle, the housing containing a circular spline fixed to the housing. The harmonic drive unit also includes a flexspline gear ring situated within and engaged with the circular spline, the flexspline gear ring being fixed to the shaft situated within the hollow spindle. The harmonic drive unit also includes a wave generator positioned within the flexspline gear ring for displacing the flexspline gear ring with respect to the circular spline. A brake rotor is coupled to the wave generator.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: May 2, 2000
    Assignee: G-Force LLC
    Inventor: Kurt Nelson
  • Patent number: 5919125
    Abstract: An improved centrifuge bowl and related system is disclosed which is particularly apt for enhanced autologous blood salvage applications. The centrifuge bowl assembly includes a rotatable outer bowl, an internal spacer interconnected therewithin, and a stator assembly for introducing/removing fluid during rotation of the outer bowl and internal spacer. The outer bowl and internal spacer are configured to define a lateral passageway at the bottom of the assembly which terminates in an upward-facing port for fluid passage therethrough into an annular, cylindrical collection region. The annular port may be defined by a peripheral fin on the spacer and may be of a width that is less than the width of the cylindrical, annular collection region, wherein separated blood components (e.g. red blood cells) will accumulate across the width of the port during blood fill/wash cycles. As a result, enhanced washing is realized while maintaining throughput rates.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: July 6, 1999
    Assignee: COBE Laboratories, Inc.
    Inventor: Stephen William Berch
  • Patent number: 5916082
    Abstract: This separator is a centrifugal device for separating solids from contaminated effluent such as oil or water base coolants and other liquids which are used in a variety of grinding and machining applications in the glass, ceramic and metal-forming industries. A containment liner or bladder lines the interior of the separator and communicates with fluid inlets and outlets. An inlet orifice allows for the pulling of a vacuum which holds the bladder in place on the interior walls of the separator. Periodically, rotation is stopped, vacuum is released and the bladder is allowed to invert and drop below the separator. Hanging in this inverted position, it is easy to clean or remove the solids from the inverted bladder.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: June 29, 1999
    Assignee: Glassline Corporation
    Inventor: Mark H. Opfer
  • Patent number: 5823937
    Abstract: A centrifugal separator for separating the solids component of a feed liquid comprises a bowl that is rotatable about a vertically disposed axis. The bowl has an interior wall, an open upper end, a closed lower end, and a generally cylindrical portion. A feed cone assembly is located at the bottom of the closed conical lower end. The feed cone assembly includes a conical outer wall and an integrally-formed, truncated cusp-shaped hub which extends upwardly towards the interior of the bowl. An annular chamber is located between the conical outer wall and the hub. A feed pipe extends from the upper end of the bowl to the lower end and includes a feed outlet which is sized and shaped to fit within the annular channel. Liquid feed is introduced into the annular channel through the feed pipe while the bowl rotates. Centrifugal force moves liquid in the annular channel outwardly along the smooth contours of the channel and onto the conical wall of the feed cone.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: October 20, 1998
    Inventor: Robert B. Carr
  • Patent number: 5785637
    Abstract: A centrifuge for a fluid uses a series of centrifugal modules to separate the fluid from particles suspended in the fluid. The fluid enters through the bottom of the centrifuge and is subjected to the centrifugal force by a set of rotors. The fluid is forced against a campanula which allows the fluid to travel upwards but forces particles downward. The fluid progresses into another module which exerts a greater centrifugal force until the purified liquid exists through the top of the centrifuge.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: July 28, 1998
    Inventors: Fernando A. Baptista, Joao M. Pereira Dias Baptista
  • Patent number: 5674174
    Abstract: A centrifugal separator for separating the solids component of a feed liquid comprises a bowl that is rotatable about a vertically disposed axis. The bowl has an interior wall, a conical lower end and a generally cylindrical portion. The conical lower end includes a central opening and defines a lower edge which has a first diameter and an upper edge which has a second greater diameter. A fluid applicator that is moveable between a stowed position and an application position may apply the feed liquid to the interior wall adjacent to the lower edge of the conical lower end so that as the bowl rotates, the angular velocity of the feed liquid gradually and non-traumatically increases, gently forcing the feed liquid upwards along the wall of the conical lower end and into the generally cylindrical portion of the bowl.
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: October 7, 1997
    Assignee: Carr Separations, Inc.
    Inventor: Robert B. Carr
  • Patent number: 5674392
    Abstract: The invention relates to a fluid treatment assembly comprising a filter (4) which itself comprises filtering elements (5) and a cleaning device (12) for periodically cleaning each filtering element including a conduit (17) for the evacuation of the cleaning fluid filled with impurities resulting from the cleaning, the treament assembly further comprising a centrifuging device which itself comprises a rotary enclosure (37) connected to a fluid admission conduit (28).According to the invention, the filtering elements (5) and the enclosure (37) are contained in a single casing (1A-1B), while the admission conduit (28) is directly connected (29-30) to the conduit (17) for evacuating the cleaning fluid.The invention finds an application in the construction of a compact and reliable assembly.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: October 7, 1997
    Assignee: Moatti Filtration S.A.
    Inventors: Theophile Christophe, Jean-Claude Moatti
  • Patent number: 5571070
    Abstract: A centrifugal separator includes a rotor sleeve which reduces the fine scale mixing of liquid components. The rotor sleeve in the annular mixing zone minimizes liquid-liquid shear, but does not adversely affect the pumping action of the rotor. The separator comprises a housing having a generally cylindrical inner surface defining an interior chamber. A hollow rotor is disposed within the chamber for rotation therein, the rotor having upper and lower openings and a generally cylindrical rotor wall with an inner and outer surface. The outer surface of the rotor wall is spaced apart from the inner surface of the housing and thereby defines the annular mixing zone. The rotor sleeve comprises a cylinder only slightly larger than the rotor. The sleeve is fixed relative to the housing, thereby preventing liquid within the annular mixing zone from contacting the rotating outer surface of the rotor. The reduction in mixing action dramatically increases the separation efficiency for shear-sensitive liquid mixtures.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: November 5, 1996
    Assignee: Costner Industries Nevada, Inc.
    Inventors: David H. Meikrantz, Alfred G. Federici, Lawrence L. Macaluso, Peter J. Harris, H. William Sams, III
  • Patent number: 5267936
    Abstract: Multi-Stage centrifugal extractors for separating two liquids of differing densities wherein each stage includes a decantation chamber which surrounds and receives liquids from a mixing chamber and wherein a portion of at least one of the separated liquids is recycled from the decantation chamber to the mixing chamber at each stage.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: December 7, 1993
    Assignee: Societe Robatel
    Inventor: Jean-Paul A. Miachon
  • Patent number: 5254075
    Abstract: A centrifugal extractor for making liquid-liquid extraction by bringing an organic phase and an aqueous phase into mutual contact and utilizing centrifugal force. A rotor rotating at a high speed is disposed inside a cylindrical casing having inlets for both phases. Draw ports for both phases are disposed at an upper portion of the rotor. An organic phase/aqueous phase mixture mixed at the bottom of the casing enters the rotor from the bottom of the rotor, and is subjected to phase separation by centrifugal force. The separated phases are withdrawn from respective draw ports. Part of the organic phase discharged from the organic phase draw port is refluxed to the bottom of the casing by a reflux cover fitted to the upper part of the rotor. The flow rate of the organic phase thus refluxed is added to the flow rate of the organic phase introduced from outside into the casing.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: October 19, 1993
    Assignee: Doryokuro Kakunenryo Kaihatsu Jigyodan
    Inventors: Shin-ichi Nemoto, Ryo Shimizu, Hiroshi Takeda, Tomio Kawata
  • Patent number: 5254076
    Abstract: A method for mixing and separating immiscible liquid salts and liquid metals in a centrifugal contractor. The method includes introducing the liquids into an annular mixing zone and intensely mixing the liquids using vertical vanes attached to a rotor cooperating with vertical baffles, a horizontal baffle, and bottom vanes attached to the contactor housing. The liquids enter the contactor in the range of 700-800 degrees Celsius. The liquids are separated in the rotor into a dense phase and a light phase which are discharged from the contactor.
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: October 19, 1993
    Assignee: ARCH Development Corporation
    Inventors: Lorac S. Chow, Ralph A. Leonard
  • Patent number: 5221460
    Abstract: Hydrocarbon dewaxing using propane or other autorefrigerative dewaxing solvent can be practiced in a centrifuge wherein the centrifugal force generated in the centrifuge produces a pressure gradient permitting dewaxing to be practiced on a continuous basis.
    Type: Grant
    Filed: May 22, 1991
    Date of Patent: June 22, 1993
    Assignee: Exxon Research & Engineering Company
    Inventor: Abraham R. DeKraker
  • Patent number: 5203999
    Abstract: A centrifugal oil filter comprises a bowl which is rotatable about a vertical axis within a fixed casing and which is open at its upper and lower ends, the inner wall of the bowl being provided with grooves which trap particles in the polluted oil fed into the bowl as the bowl is rotated and the oil flows upwards along the wall under centrifugal action and which allow the particles to fall therefrom under gravity to a particle collector positioned below the open lower end of the bowl when the bowl stops rotating. The inner wall of the bowl is also formed with an annular recess above the particle trapping grooves. This recess fills with oil when the bowl is rotated, and this oil flows out and downwards along the wall under gravity when the bowl stops, thereby cleaning the filter wall.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: April 20, 1993
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."
    Inventor: Michel G. Hugues
  • Patent number: 5045048
    Abstract: A seal for a blood processing centrifuge bowl which is formed of a dynamic rotary seal and a static seal. The dynamic rotary seal is formed of an upper graphite or carbon non-rotating ring member and a lower two-piece rotatable ring member formed of a ceramic bearing surface bonded by adhesive to a plastic adapter ring. The static seal is comprised of an elastomeric diaphragm formed over the upper ring member and secured thereto by a plastic retaining ring.
    Type: Grant
    Filed: March 29, 1990
    Date of Patent: September 3, 1991
    Assignee: Haemonetics Corporation
    Inventors: Edward W. Kaleskas, Thaddeus G. Minior, Jr., Sepideh H. Nott
  • Patent number: 5024647
    Abstract: The invention is directed to a centrifugal contactor for solvent extraction systems. The centrifugal contactor is provided with an annular vertically oriented mixing chamber between the rotor housing and the rotor for mixing process liquids such as the aqueous and organic phases of the solvent extraction process used for nuclear fuel reprocessing. A set of stationary helically disposed vanes carried by the housing is in the lower region of the mixing chamber at a location below the process-liquid inlets for the purpose of urging the liquids in an upward direction toward the inlets and enhancing the mixing of the liquids and mass transfer between the liquids. The upper region of the mixing vessel above the inlets for the process liquids is also provided with a set helically disposed vanes carried by the housing for urging the process liquids in a downward direction when the liquid flow rates through the inlets are relatively high and the liquids contact the vane set in the upper region.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: June 18, 1991
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Robert T. Jubin, John D. Randolph
  • Patent number: 4824431
    Abstract: Prior centrifugal concentrators for concentrating precious minerals use annular ribs or baffles to trap the precious minerals. Sand or magnetite tends to pack against such ribs, reducing the effectiveness of these devices. In the present invention, the inner surface of the rotating drum is free of obstacles, but forms three continuous zones, a migration zone, a retention zone and a lip zone. The precious mineral is retained in the retention zone by centrifugal force and friction while the unwanted slurry flows over the retention zone and out of the drum.
    Type: Grant
    Filed: January 13, 1987
    Date of Patent: April 25, 1989
    Inventor: Steven A. McAlister
  • Patent number: 4530691
    Abstract: There is disclosed herein a liquid processing apparatus for use in centrifugal apheresis in which whole blood is received from a donor, separated into therapeutic components and selectively collected. The apparatus includes a processing chamber support system for cooperating in controlling the volume of a variable-volume blood processing chamber during apheresis. The support system is constructed to spin about a spin axis and is substantially symmetric about said axis.The elements of the support system include a chamber cover for receiving a variable-volume chamber. A mandrel is provided for engaging the variable-volume chamber and applying a conforming force to the chamber by urging the chamber toward the cover and thereby causing the chamber to conform to the shape of the cover. Thus the chamber is positioned between the cover and mandrel during apheresis, and the cover and mandrel cooperate in controlling the volume and shape of the chamber.
    Type: Grant
    Filed: December 13, 1983
    Date of Patent: July 23, 1985
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventor: Richard I. Brown
  • Patent number: 4516987
    Abstract: An apparatus and method for removing air and other gases entrained in water or other liquid and, more particularly from water delivered from a steam condenser and used in a steam-generating system for powering a prime mover of a torpedo. The apparatus includes a rotatable drum for centrifuging a volume of water and air to separate the water from the air, a pitot probe for drawing water from the container under pressure, a water-driven air jet pump within the rotatable drum and communicating with the separated air to pump the air into a collection chamber and build up the pressure thereof, a nozzle for directing a portion of the water drawn through the pitot probe to the air jet pump for operation thereof and a relief valve for controlling the discharge of air under pressure from the collection chamber to an exhaust area which may be a pressurized area within the torpedo.
    Type: Grant
    Filed: July 21, 1983
    Date of Patent: May 14, 1985
    Assignee: Sundstrand Corporation
    Inventor: Richard E. Niggemann