Abstract: A cone frustum is provided for a centrifugal separator to shield the area of the separator's screen at the top of the flight assembly from the initial impact of the material which is introduced into the separator. The cone frustum is spaced above the flight assembly and below the inlet to shield the portion of the screen that is at the top of the flight assembly. The cone frustum is spaced radially inwardly from the screen and outwardly from the outlet. The cone frustum shields the part of the screen which wears most quickly to extend the life of the separator's screen assembly. The cone frustum is partially perforated to allow for initial dewatering of the material introduced into the separator. The slope of the cone frustum is equal to or less than the slope of the screen of the separator.

Abstract: Systems and methods are provided for reducing the number of leukocytes in cellular products like platelets collected in an on line or continuous blood separation processes. The systems and methods reduce the number of leukocytes from a cellular suspension before its separation into a cellular-rich concentration. This leads to effective and efficient leukocyte removal and a high quality blood product suited for therapeutic use, with and without long term storage.

Abstract: Disclosed is a method for separating a blood material into blood components by centrifugation, wherein when a multiple blood bag unit including a plurality of flexible blood bags (at least one of the flexible blood bags containing a blood material) liquid-tightly connected to at least one leukocyte-removing filter device through flexible tubes in a predetermined order is accommodated in a centrifuge bucket, at least the blood material-containing flexible blood bag or bags are inserted in the centrifuge bucket while placing at least the leukocyte-removing filter device outside of the centrifuge bucket, wherein the leukocyte-removing filter device is directly or indirectly secured relative to the rotor and a center of the filter device is located at a distance from an axis of the rotation shaft which is smaller than a distance between a pivotal axis of the turning of the centrifuge bucket and an axis of the rotation shaft at a portion thereof which has the rotor connected thereto.

Abstract: The device comprises a first wide-mesh cloth or screen which bears against the calender of a basket, at least one tight supple tube connected to a source of gas under pressure which is against the first cloth or screen, a second cloth or screen identical to the first covering the tube such that the tube is sandwiched between the cloths or screens, and a fine-mesh filtering cloth covering the second cloth or screen.

Abstract: Methods and systems for processing a biological fluid and treating a separated component of the biological fluid are disclosed.

Abstract: Disclosed is a leukocyte-removing filter device comprising (a) a casing having an inlet for blood and an outlet for leukocyte-removed blood, which are both located in a top portion of the casing, and (b) a filter medium disposed in the casing so as to divide the internal space of the casing into an inlet-side chamber communicated with the inlet and an outlet-side chamber communicated the outlet.

Abstract: Waste washout liquid containing liquid washable photopolymer from a printing plate manufacturing process is subjected to filtration via a centrifugal filter unit. The unit has a collector for the solid material arranged for rotation and disposed so as to allow deposition upon it of solid material during its rotation. The unit is fitted with at least one of a pretreatment unit for coagulating the solid material and a collector removable from the filter unit so as to allow its disposal together with the solid material deposited on it. Usually, the pretreatment unit is a preheater and the collector is a disposable liner within a rotatable chamber.

Abstract: An improved centrifugal fat extraction apparatus for removing surface liquid from food which comprises a housing assembly having mounted at its bottom a self-centering drive assembly having a shaft extending vertically from the self-centering drive assembly within the housing assembly, a rotatable spindle mounted onto the shaft, a means for rotating the spindle at a variable speed between 750 and 1200 rpm for approximately a 45 second time span, and a rotatable cylindrical slotted basket capable of holding foods. The self-centering drive assembly prevents undesirable vibration from being imparted to the housing assembly as the result of eccentric loading of the foods into the slotted basket.

Abstract: An evertable drum centrifuge has a drum with a generally cylindrical and perforate outer wall and having an axially forwardly open front end. An end wall of the drum can move axially between a closed position fitting in the front outer-wall end and an open position spaced axially forward of the outer wall and is centrally formed with a fill opening. An annular liner of a flexible foraminous filter medium has a front edge attached to the outer-wall end and a back edge attached to a rim of extension structure fixed on the end wall. When the end wall move between the closed and open positions, the liner moves from a normal position inside the drum and extending backward from the front end to the rim to an everted position substantially outside the drum and extending forward in the solids compartment from the front end to the rim. An axially displaceable fill tube carries an axially nondisplaceable fill head complementarily engageable in the fill opening and having an annular seal engageable with the fill tube.

Abstract: A cytocentrifugation device of the type disclosed by the copending Stokes-Quirante U.S. application Ser. No. 07/788,310 (U.S. Pat. No. 5,252,228 on Oct. 12, 1993) is improved by the provision of elongate, rounded projections on and protruding from the clamping face of the delivery conduit flange at the delivery end of such conduit and the flattening of the otherwise rounded and flange contacting end faces of the clamping arms. Further improvements include a floating mounting for the clamping arms so as to ensure even clamping of the annular area of the absorption pad marginal to the absorption pad opening confronting the cell deposition area of the microscope slide that is otherwise covered by the absorption pad, and the provision for positively, properly aligning the several items to be clamped together during operation of the cytocentrifuge apparatus.

Abstract: A container for receiving and separating blood plasma into its ingredients comprises two sealingly coupled sections (1 and 2). One container section (2) and the adjacent portion of the other container section are made of solid material, and the two container sections are screwed together. The container sections (1 and 2) comprise their respective chambers (29 and 30) for receiving their respective fluid ingredients, and these chambers are interconnected through a connecting channel (31) through the abutting portions, at which the container sections (1 and 2) are screwed together. A valve seat (21, 27) is shaped at each end of the connecting channel (31) for each valve member (22, 16) for a sealing closing of the chambers (29, 30) in the separated state of the container sections (1, 2).

Abstract: A method and apparatus for separating solids from liquid containing same comprises a conical-mesh which rotates within a casing about a vertical axis with the mesh walls upwardly diverging. A liquid-solid slurry is introduced to the center of the mesh at a top inlet. Stationary wiper arms in the center of the mesh, along with fluid pressure inside the mesh, pumping effect of the rotating blades, gravity force on the slurry and tangential pump suction at the bottom drive the liquid out through the mesh, while the solid material passes down through a central outlet opening in the bottom of the mesh.

Abstract: Disclosed is a method for separating a blood material into leukocyte-removed blood component products, which comprises providing a multiple blood bag system comprising a primary bag containing a blood material, a leukocyte-removing filter device comprising a flat casing, and at least one satellite bag, and centrifuging the blood material using a centrifuge cup having the multiple blood bag system accommodated therein, to thereby separate the blood material into blood components, wherein the centrifugation is performed with the filter device being held by a filter device holder having a substantially flat dimension which is disposed in a centrifuge cup so as to extend in a direction perpendicular to an inner bottom floor of the centrifuge cup, and wherein the filter device holder has a recess and the filter device is received by the recess in a manner such that a flat surface of the flat casing of the filter device is perpendicular to the inner bottom floor of the centrifuge cup.

Abstract: A sleeve filter centrifuge comprises between the closed end wall of a centrifugal drum and a base portion movable relative to this end wall a flexible, extendible dividing wall, for example in the form of a bellows or a folded membrane. This dividing wall provides a seal between a displacing shaft bearing the base portion and the inner chamber of the centrifugal drum accommodating the suspension and prevents any exchange of substances, which, for example, impairs sterilization, between the process area of the centrifugal drum and the machine frame side of the sleeve filter centrifuge.

Abstract: In a centrifugal separator having a vertical drive mechanism including a drive shaft, a flight assembly attached to the drive shaft, a frustoconical screen assembly around the flight assembly driven by the drive mechanism and a rounded support basket to seat the screen, a method of assembling the screen within the basket. The method includes inserting the screen in the basket, pulling the screen upward to achieve a rounded condition, attaching the lower part of the screen to the lower part of the basket, and attaching the upper part of the screen to the upper part of the basket by tightening bolts.

Abstract: A processing vessel for isolating microvessel endothelial cells from liposuctioned fat tissues includes a fat-receiving basket defined by polyester screen material. Fat tissue removed from a patient by liposuction is received into the basket and is rinsed and digested with an enzymatic solution. The freed microvessel endothelial cells from the fat tissues are separated from the fat cells, and from blood cells and other materials which may be present in the basket by centrifuging. A bottom chamber of the processing vessel is configured to define a "pellet" of isolated endothelial cells which may be removed from the processing vessel for deposition on the inner lumenal surface of a synthetic graft which the fat-donor patient is to receive.

Abstract: A self-cleaning scroll and screen centrifuge for processing a combined liquid and solid material to separate the solid material from the liquid. The centrifuge is designed for use in the food processing industry and therefore has fluid injectors for cleaning all surfaces within the centrifuge including opposed mating surfaces which function as noncontacting seal mechanisms.

Abstract: A scroll centrifuge having a basket/cage combination with apertures and a screen portion. The screen portion comprising tungsten carbide ligaments arranged side-by-side and end-to-end on the inside surface of the basket/cage combination to form slots. The slots whereof communicate the interior of the basket/cage combination to the exterior.

Abstract: A cytocentrifugation device, rotor, and apparatus are improved by providing the device with a plurality of liquid-receiving chambers arranged serially along and opening into an elongate conduit leading to and terminating within a filter-pad-holder so that a filter-pad-prewetting liquid can be passed along such conduit and into a liquid-flow opening of a filter pad held by such holder in advance of passage along said conduit and through such liquid-flow opening in the filter pad of a cell-carrying liquid sample during a centrifugation run of the apparatus. Retention of prewetting liquid in the filter pad around the sample liquid flow helps to prevent loss of cells to the filter pad. Various other structural modifications of the cytocentrifugation device and filter pads used therewith also help to prevent loss of cells to the filter pad.

Abstract: Methods and apparatus for collecting and processing tissue to produce an endothelial cell product having a vessel for rinsing, draining, digesting and isolating tissue. The vessel has a rinsing and digesting chamber for containing tissue during processing. An inlet in the rinsing and digesting chamber allows entry of rinsing solution and tissue from a liposuction device. A waste chamber in fluid communication with the rinsing and digesting chamber preferably connects with a vacuum source. An isolation chamber is separated from the rinsing and digesting chamber by a screen. An ampule in fluid communication with the isolation chamber includes a pair of ports controlled by valve devices to be selectively in fluid communication with the isolation chamber. After processing, the ampule isolates a pellet of endothelial cells and the valve devices permit the pellet to be in fluid communication with the ports.

Abstract: A backwashable self-cleaning strainer has a vertical housing containing a rotatable strainer basket. The housing has an inlet adjacent the top thereof and an outlet adjacent the bottom wall, with a flush discharge opening in the bottom wall. Components for rotating the strainer basket are located outside the flow of water containing particulates that enters the housing. A hollow backwash conduit with a passage through the sidewall is positioned adjacent the inner surface of the strainer basket and communicates with a sealable aperture in the wall of the housing. Upon opening of the aperture, cleaned water flows through the side wall of the strainer basket, removing particulates therefrom, and out the hollow backwash conduit. An intermittently rotatable brush is also provided to brush the inner surface of the strainer basket.

Abstract: A pusher centrifuge, in which the pusher plate is moved cyclicly relative to a perforated drum in the axial direction in an advanced and a retracted position in a forward or a reverse movement, can be operated with a higher throughput if the drum is supplied with the mixture after leaving the advanced position of the pusher plate and up to the start of the following forward movement of said pusher plate. The mixture throughput can also be increased in that a smaller mixture quantity is supplied to the drum before reaching the advanced pusher plate position than after leaving the advanced pusher plate position.

Abstract: The apparatus comprises a base unit, a rotatable shaft extending vertically from the base unit, a means for rotating the shaft, and a rotatable cylindrical basket capable of holding fried foods. The basket comprises an horizontally disposed circular bottom piece and a vertically disposed cylindrical piece of porous material being attached at its lower open end to the outer edge of the circular bottom piece to form the vertical wall of the basket. The basket is vertically connectible to and removable from the rotatable shaft. The apparatus further comprises a means for coupling the rotatable shaft to the rotatable basket so that the axis of the shaft is aligned with the axis of the basket. The apparatus also comprises a solid vertical wall surrounding the porous vertical wall of the rotatable basket. The solid vertical wall has an annular channel on the inside of its lower edge so that it has a substantially J-shaped cross section.

Abstract: A method and apparatus for separating solids from liquid containing same comprises a cylindrical casing within which a rotor assembly or block having a conicalmesh rotates about a vertical axis with the mesh walls upwardly diverging. A liquid-solid slurry is introduced tangentially to the inside of the mesh at a top inlet. Stationary wiper arms inside the mesh remove the solids from the mesh as it rotates. Fluid pressure inside the mesh, pumping effect of the rotating blades, gravity force on the slurry and particularly tangential pump suction at the bottom of the casing, drive the liquid out through the mesh, while the solid material is expelled vertically downwards through a central outlet opening in the bottom of the mesh.

Abstract: A discontinuously operated filter centrifuge has its noninverting filter bag attached only to the filter bottom which is displaceable out of the filter drum, so that when the filter bag is displaced out of the filter drum, a clearance is provided between the filter bag and drum to enable inspection of the interior of the drum.

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.

Abstract: An improved vertical, centrifugal separator (100) includes a drive mechanism (142) to which is connected both a flight assembly (138) and a screen assembly (166). An inlet assembly (124) is positioned above the flight and screen assemblies for material (M) to be separated to be fed into the separator. This material is captured between the flight and screen assemblies and falls downwardly therebetween as separation occurs A pocket assembly (144) integral with the screen assembly is positioned between a discharge port of the inlet assembly and the upper end of the flight assembly. The pocket assembly creates a "basket" for catching material introduced into the separator through the inlet assembly, and replaces the upper portion of the screen assembly which previously was used to catch this material. The screen assembly includes a rotor (182) having a plurality of spokes (196) defining an outlet for separated solid material.

Abstract: A drum vacuum filter is shown which draws-in and radially outwardly projects the liquid content of a slurry or the like while the latter is advanced vertically along a passageway defined between a cylindrical rotating filter and a rotating drum wall, the latter of which collects and advances the solid material content of the slurry downwardly along the passageway for delivery and, as facilitated by a scroll scraper extending therealong. The liquid content is drawn under vacuum pressure induced force by a series of spaced-apart flutes or plates disposed along the exterior of the rotating filter, and radially or transversely outwardly with respect to the filter for segregated delivery with respect to the solid material content of the slurry or changed-in liquid.

Abstract: A rotary separator is described, of the type which includes membrane packs lying in a rapidly rotating chamber, which provides ready access to the chamber to change or inspect membrane packs, as well as ready access to at least one dynamic seal. The rotary frame includes upper and lower parts (40, 42) forming a chamber (22) between them and held together by bolts. The lower part (42) is rotatably supported by a pair of bearings (60, 62), but the upper part (40) is not directly supported by bearings. A pair of concentric conduits (20, 30) extend through the lower part, but not the upper part (40). The conduits include an inner conduit in the form of a pipe whose top (86) lies slightly within the chamber and which is sealed thereat by a dynamic seal 80. The top part (40) can be readily removed to provide access to the membrane packs (44) and to the inner conduit seal (80).

Abstract: A self-cleaning strainer comprises a vertically disposed housing which contains a rotatable strainer basket. The housing has an open top, closed by a closure plate, an inlet adjacent the top of the housing and an outlet adjacent a closed bottom of the housing, the closed bottom having a flush discharge opening. The components used to rotate the strainer basket are disposed outside the flow of any water containing particulates that enters the housing. Cleaning devices such as a scraper blade supported in the strainer basket, a rotatable brush supported in the strainer basket, and a water jet manifold disposed between the housing sidewall and the sidewall of the strainer basket are used to clean the rotatable strainer basket.

Abstract: A filtration apparatus including a rotatable drum and a filter member defining at least a part of the side wall of the drum. A liquid containing solid particles, such as used wash water from a vehicle washing facility, is introduced into the drum by a sump pump or the like and a motor including an electrically-operated brake rotates the drum at a sufficient speed to force a liquid filtrate or filtered water outwardly through the filter member and cause a layer of relatively dry solids to collect on the inner surface of the filter member. Operation of the drum motor is terminated at the same time or shortly after operation of the sump pump is terminated and the brake is energized at the same time.

Abstract: A centrifugal drier for a product, comprises a horizontally supported rotating drive shaft including an axial passageway adapted to be a filling pipe for the product; a drum having a closed end secured to one end of the drive shaft and an open end; a conical filter mounted inside the drum, tapering from narrow to wide toward the drum open end; a rotatably mounted baffle disk being displaceable between a closed position sealing the drum open end and an open position for adjustable discharge of the dried product, the filter and the baffle disk defining a work area, the axial passageway communicating with the work area; an annular duct operably associated with the drum open end and cooperating with the baffle disk for receiving the dried product when the baffle disk is in the open position; and a backflusher disposed outside the filter for backflushing the filter with fluid.

Abstract: A frontal separator method and apparatus for separating particles from fluids, such as microorganisms from juice, and for providing a sample of juice having a concentrated number of microorganisms therein for ease of detection thereof, comprising a hollow, rotatable, perforated, cylindrical rotor mounted inside of a spaced-apart outer case with an annular separation chamber therebetween. The fluid with particles to be separated therefrom is fed into the separation chamber, the fluid flows through the holes in the rotor and exits through an outlet port while the particles exit from a waste port of the separation chamber. The outer casing preferably also rotates with the rotor, and the holes, which have a diameter substantially greater than that of the particles, are preferably at an angle to a radius of the rotor.

Abstract: A centrifuge for separating liquids, e.g., oil from water. The centrifuge basically comprises a housing having first and second cavities, and a liquid conveying wall disposed over a bowl arranged to be rotated about a central axis. The bowl includes an annular top wall having an annular separator plate including a central hub mounted below the top wall. The separator plate is spaced from the bowl to enable the second liquid to flow therebetween and into the space between it and the top wall. The hub has plural radial passageways in communication with the space between the separator plate and the top wall and also with the space between the top wall and the liquid conveying wall. The hub also has plural axial passageways communicating with the interior of the bowl and located at the interface of the two liquids formed when the bowl is rotated. Each axial passageways has an outlet in communication with the liquid conveying wall.

Abstract: Centrifugal oil filters are described comprising a rotatable centrifugal cleaning cartridge, a shaft for rotation thereon, a co-operating member for connecting the filter assembly to a source of fluid to be cleaned, an outer casing member, a closure member for sealing one end of the casing member and a fluid drain conduit and wherein the centrifugal cleaning cartridge may be removed without removal of the outer casing member or disconnection of the fluid drain conduit.

Abstract: The process for obtaining juice, especially apple juice, from a mash obtained by crushing cells is free of enzymatic or biochemical processing steps for removal of pectins and performs the juice extraction continuously. The fluid phase obtained from the mash in a continuous centrifugation process and the foam combined with pectin components floating on it are separated from each other, advantageously by a vibrating screen. This process and eventual subsequent downstream separation steps, including for example removal of residual cellulose fibrous fractions from the fluid phase by centrifugal decantation, must be completed before the reaction of pectin with oxygen begins. An apparatus for performing this process is also described.

Abstract: Process and apparatus for the separation of mixtures of substances by means of centrifugal forces, particularly for the filtration and/or sedimentation of solids from suspensions, wherein the material mixture is rotated in a cake-forming chamber until a cake of solid particles is formed. The resulting cake may thereafter be washed with a wash liquid, centrifuged and discharged from the cake-forming chamber. Discharge from the cake-forming chamber results in rearrangement of the solid particles of the cake. The cake of the rearranged particles is transferred to at least one further processing chamber and dried by centrifugation before being discharged from the apparatus.

Abstract: A method and apparatus provide for the effective centrifugal washing and/or thickening of paper pulp, using a perforated cylinder. A stock head box, located within the cylinder, applies a thin sheet of pulp on the interior the cylinder, at a high rate (e.g. about 20 meters per second), at a first arcuate position. The cylinder is rotated at high speed (e.g. 100 rpm, to provide an acceleration on the order of about 10 gs), whereby centrifugal force causes liquid in the pulp to move radially outwardly through the openings in the screen cylinder. The pulp is withdrawn from the interior of the cylinder by a vacuum roll or the like at a second arcuate position less than 360.degree. from the first position. The withdrawn pulp is moved by a screw conveyor or the like away from the cylinder in a dimension generally parallel to the axis of rotation, and the withdrawn liquid passes through channels in a drum surrounding the perforated cylinder, and is engaged by an impeller, and flows to a volute for removal.

Abstract: Apparatus for collecting blood components including a supply line that is connected to a blood line and has a filter on it to permit passage of supply solution (e.g., anticoagulant or saline prime) and blocks passage of bacteria.

Abstract: A vertical centrifugal separator, for example of the type used to dry coal, is improved by splitting the frustoconical screen into two pieces and including access doors in the water shield surrounding the screen. The division of the screen is made horizontally, for example at a level of about 30 to 70 percent down from the top of the screen. This permits the separator to be serviced in a relatively short time, by replacing only the upper partial screen when holes are worn in it. This is feasible because most of the wear in these screens is confined to about the upper 30 percent of their height. If a screen support basket is used, it can be confine to the lower partial screen, so that it does not have to be removed in order to replace the upper partial screen.

Abstract: An improved method and apparatus for separating high-molecular-weight substances from cells suspended in liquid nutrient media, features continuous central monitoring and control of the process by a computer (22), and a way to combine the heretofore separate processes of first, separating media into solid and liquid components, and second, concentrating the proportion of high-molecular-weight components in the separated liquid. The media are conveyed by a first pump (3) to a centrifuge continuous flow rotor (2), which separates the solids from the liquid components and directs the latter to an intermediate reservoir (5), which sits on an electric scale (7) which is continuously monitored. From here they are fed to a filtration unit (9) in which the high-molecular-weight substances are separated and recycled through a feedback line (11), with the aid of a second pump (10), into the intermediate reservoir (5).

Abstract: A cascade formed of a plurality of centrifugal contactors useful for countercurrent solvent extraction processes such as utilizable for the reprocessing of nuclear reactor fuels is modified to permit operation in the event one or both end stages of the cascade become inoperative. Weir assemblies are connected to each of the two end stages by suitable conduits for separating liquids discharged from an inoperative end stage based upon the weight of the liquid phases uses in the solvent extraction process. The weir assembly at one end stage is constructed to separate and discharge the heaviest liquid phase while the weir assembly at the other end stage is constructed to separate and discharge the lightest liquid phase. These weir assemblies function to keep the liquid discharge from an inoperative end stages on the same weight phase a would occur from an operating end stage.

Abstract: Using a membrane separating device to remove cell-free fluid from a suspension of cells to preconcentrate cells in the suspension prior to processing in a centrifuge.

Abstract: A centrifuge apparatus and a method of filtration are described. The centrifuge has radial and lateral filtration surfaces and separate discharge chambers for each. The lateral filter is located at an imperforate radial distance from the radial filter. This distance forces the filtration to occur through the radial filter and develop the filter cake rather than pass through the lateral filter which has no developed cake. The use of separate, laterally-disposed withdrawal chambers at different radial heights allows accurate control over the hydraulic filtration forces acting across the filter surfaces.

Abstract: Disposal container structure for the disposal of waste radioactive materials includes inner structure comprising a cover member with an inlet port and an annular seal surface portion, and depending filter structure attached to the cover structure that includes circumferential side wall structure and bottom wall structure that defines an enclosed chamber volume in which waste materials are introduced for storage therein through the inlet port. The container structure further includes outer structure that has circumferential side wall structure corresponding in shape to the filter structure of the inner structure, bottom wall structure that defines a chamber for receiving the filter structure of the inner component, and annular seal surface structure formed on the side wall structure for mating with seal surface structure of the inner structure to seal the storage chamber volume defined by the filter structure.

Abstract: A non-blinding filter system for batch centrifuges utilizes a high speed injection nozzle to input wet particulate matter in the form of a slurry into a batch centrifuge in a manner that maintains turbulence within the slurry during the filling operation. Submicron particulate fines are suspended in the filtrate and settle out less rapidly than larger diameter particulate matter, thus a layer of coarser material can be laid over the filter media before the majority of the filtrate passes therethrough. A plurality of metering orifices retard the extraction of the filtrate such that the submicron particles are not forced through the layer of coarser material to the filter media with blinding consequences.

Abstract: A neutralizer ring for dynamically balancing a gimbal-mounted overhung centrifuge, wherein the neutralizer ring must have a particular mass and location in accordance with the parameters of a given system and a method for determining the mass and location of said system by iterative manipulation of the mass and location.

Abstract: In apparatus for removing water and impurity components from sand, there are provided a rotary member having an opening at one end for charging and discharging sand and a filter for passing water. The rotary member is supported by a support and driven by a variable speed motor. Piston-cylinders or the like are provided for tilting the support. In a modified embodiment, two of the rotary bodies are juxtaposed with their openings faced each other. A peripheral wall of the rotary member is provided with a member of perforations for discharging water separated from sand.

Abstract: In known worm centrifuges comprising a solid bowl and a sieve bowl, a cleaning and predewatering of the solids/liquid mixture occurs in the solid bowl when dewatering solids/liquid mixtures and an after-dewatering of the solids occurs in the following sieve bowl. In general, a relatively good cleaning and dewatering effect is achieved with such previously-known worm centrifuges comprising a solid bowl. According to the invention, the after-dewatering effect in the sieve bowl can be quite substantially increased in that the conveyor worm is provided with agitator elements in the region of the sieve bowl, the agitator elements immersing into the solids layer. As a result thereof, in particularly, a circulation of the solids layer is achieved in the sieve bowl in a very advantageous manner and, as a result thereof, the after-dewatering of the solids before discharge from the worm centrifuge is very substantially improved.

Abstract: A cassette has a foraminous lower portion which is shaped to receive a button or pellet of agar and is capable of being placed in the bottom of a fluid container for use in a centrifuge. After the cassette portion is placed in the container, a fluid containing cells is poured in the container which is then centrifuged causing the cells to adhere to the agar. The fluid is then poured out, the cassette lower portion removed from the container and an upper foraminous cassette portion is used to cover the lower portion and enclose the agar with adhered cells.