EP0487915B1 - Angled rotor head for centrifuges - Google Patents
Angled rotor head for centrifuges Download PDFInfo
- Publication number
- EP0487915B1 EP0487915B1 EP91118465A EP91118465A EP0487915B1 EP 0487915 B1 EP0487915 B1 EP 0487915B1 EP 91118465 A EP91118465 A EP 91118465A EP 91118465 A EP91118465 A EP 91118465A EP 0487915 B1 EP0487915 B1 EP 0487915B1
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- European Patent Office
- Prior art keywords
- angle head
- head according
- base
- outer part
- angle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B5/00—Other centrifuges
- B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
- B04B5/0407—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
- B04B5/0414—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes
Definitions
- the present invention relates to an angular head for centrifuges according to the preamble of patent claim 1.
- Such an angular head with fixed, non-swinging out beakers is usually manufactured with great manufacturing effort.
- Such an angle head is milled from a solid material, the receiving bores for receiving the cups likewise being produced by a large number of drilling and milling processes connected in series.
- Similar angular heads are e.g. B. known from DE 36 01 789 C1.
- a centrifuge rotor has a lower part with a frusto-conical wall widening downwards and an essentially correspondingly directed outer part.
- receptacles of the vessels running downwards and outwards are provided in the lower part. With the rotor open, the tubes are inserted laterally from the outside and guided laterally. The side openings are covered by the outer part.
- the bracket must also perform lateral guidance when starting and braking as well as radial guidance at high speeds. Since the available surface of the bracket is very small, extreme care and costs must be used here.
- the present invention is therefore based on the object of developing an angular head for centrifuges of the type mentioned in such a way that it can be manufactured much more cost-effectively and simply with conventional load-bearing capacities, such as comparable angular heads of the prior art.
- the invention is characterized by the technical teaching of claim 1.
- the two parts are preferably connected to one another in the region of the horizontal cover flange of the angle head, because there are favorable fastening surfaces after the two parts are in this Area preferably over rags and thereby a large fastening area is created.
- a sheet metal material is preferably used as the material for the relatively highly stressed outer part, which is drawn in at the outer edge and thus forms a stable support for the bottom region of the cups inserted into the receiving openings of the angle head.
- Beakers which are usually designed as plastic sleeves, are inserted into glass tubes with the test material.
- the inwardly drawn collar on the outer edge of the outer part can be formed at a right angle or in a rounded shape and protrudes over the center of the tube base, in order to thus ensure a support surface for the tube base during the centrifuging process and also when standing.
- the inner part can be injection-molded or cast from an inexpensive plastic material and the inner part essentially serves only as a radially inwardly directed support surface for the cups inserted into the receiving bores and therefore does not have to transmit any centrifugal forces.
- the parting line between the inner part and the outer part is preferably applied in the base region of the cup, in order to ensure a practically closed angle head, which is thus particularly aerodynamically designed.
- the inner part thus essentially serves as a windbreak in the area of the cup.
- the inner part also forms the rotor hub at the same time, and thus to transmit the rotary drive forces acting on the angular head to the outer part via the fastening arranged in the vicinity of the rotor hub between the inner part and the outer part.
- the inner and outer parts overlap in this area and large, load-transmitting surfaces can thus be created between the two parts, by means of which it opens it is easily possible, on the one hand, to transfer the centrifugal force of the outer part to the inner part and, on the other hand, to transmit the torque loads from the inner part to the outer part.
- the recesses on the top of the outer part for receiving the corresponding cups are elliptical.
- the plastic part is cylindrical to a certain extent in the upper and lower area, that is to say it is designed vertically, in order to be able to attach favorable balancing masses to it. This means that annular spaces are formed on the inner circumference, which are not filled by the inserted cups, so that appropriate balancing weights can be introduced into these annular spaces.
- the angle head 1 essentially consists of a cup-shaped outer part 2, preferably made of a sheet metal, which initially has an upper, horizontally extending cover ring 6 from the outer part 2.
- elliptical recesses 10 are formed, into which cups 9 can be inserted, into which cups, in turn, glass tubes (not shown in more detail) with the examination liquid can be inserted.
- the cup-shaped outer part 2 extends obliquely, directed radially outwards and forms an outer wall 11 of the outer part 2 there, which near the bottom of the cup merges into an inwardly directed, cranked, annular bottom part 12.
- the length of the base part 12 from the outer part 2 is such that the base part 12 extends beyond the longitudinal center axis 13 of the cup 9, so that the cup 9 rests on the base part 12 in all functional positions.
- the bottom part 12 thus transmits the centrifugal load of the cup 9 to the outer wall 11 of the outer part 2 and this transmits the centrifugal load to the horizontal cover ring 6 of the outer part 2.
- the inner wall of the angle head 1 is formed by a likewise cup-shaped inner part 3, which is preferably formed from a plastic part.
- the inner part 3 has the receiving bore 5 for the rotor hub 4 and likewise forms a horizontal, disk-shaped area on which the cover ring 6 of the outer part 2 is arranged to overlap.
- the cover ring 2 is connected to the inner part 3 in the region of the rotor hub 4 by means of screws which are arranged on the circumference and are inserted into the screw bore 7.
- the inner part 3 forms a horizontally directed bottom 25, which in turn merges at its radially outer end via a part 26 which is bent obliquely outwards.
- the part 26 forms with the bottom part 12 of the outer part 2 a parting line 24, via which no load is transmitted.
- the base part 12 of the outer part 2 thus lies perpendicular to the longitudinal center axis 13 of the cup 9 and, at position 14, absorbs the centrifugal force exerted by the cup base 21 on the base part 12 of the outer part 2 at position 14.
- webs 20 are formed on the inner part 3, which are arranged parallel to each other in pairs on the outer circumference of the inner part 3 according to FIG. 2 and form the lateral displacement limitation for the cups 9 inserted into the receiving bores 10.
- the webs 20 are located approximately at half the height of the cup length below the circular ring region 8 of the elliptical recesses 10.
Description
Gegenstand der vorliegenden Erfindung ist ein Winkelkopf für Zentrifugen nach dem Oberbegriff des Patentanspruchs 1. Ein derartiger Winkelkopf mit feststehenden, nicht-ausschwenkenden Bechern wird in der Regel unter großem Fertigungsaufwand hergestellt. In der Regel wird ein derartiger Winkelkopf aus einem Vollmaterial gefräst, wobei die Aufnahmebohrungen zur Aufnahme der Becher ebenfalls durch eine Vielzahl hintereinandergeschalteter Bohr- und Fräsvorgänge hergestellt werden.The present invention relates to an angular head for centrifuges according to the preamble of
Ähnliche Winkelköpfe sind z. B. aus der DE 36 01 789 C1 bekannt. Hier besitzt ein Zentrifugenrotor ein Unterteil mit sich nach unten erweiternder kegelstumpfförmiger Wand und ein im wesentlichen entsprechend gerichtetes Außenteil. Im Unterteil sind in konischer Richtung nach unten und außen verlaufende Aufnahmen der Gefäße vorgesehen. Die Gefäße werden bei geöffnetem Rotor von außen seitlich eingelegt und seitlich geführt. Die seitlichen öffnungen werden durch den Außenteil abgedeckt.Similar angular heads are e.g. B. known from DE 36 01 789 C1. Here a centrifuge rotor has a lower part with a frusto-conical wall widening downwards and an essentially correspondingly directed outer part. In the lower part, receptacles of the vessels running downwards and outwards are provided. With the rotor open, the tubes are inserted laterally from the outside and guided laterally. The side openings are covered by the outer part.
Nachteilig ist, daß die Aufnahmen für die zu zentrifugierenden Gefäße jeweils in das Unterteil gebohrt oder gefräst werden müssen.It is disadvantageous that the receptacles for the vessels to be centrifuged have to be drilled or milled in the lower part.
Ein weiterer Nachteil ist, daß die auftretenden Zentrifugalkräfte von dem beweglich am Innenteil gelagerten Außenteil aufgenommen werden müssen. Die Gefäßte selbst stützen sich zwar am Innenteil ab, werden aber durch die Rotation beim Zentrifugieren gegen das Außenteil gepreßt. Die Verbiegung des Außenteil in seitlicher Richtung auswärts wird nur dadurch verhindert, daß sich das Außen- und das Innenteil an der Naht (25) berührt. Diese Berührung muß aber nach der Erfindung stets definiert sein, da sonst die Dichtwirkung verloren geht.Another disadvantage is that the centrifugal forces that occur have to be absorbed by the outer part, which is movably mounted on the inner part. The tubes themselves are supported on the inner part, but are pressed against the outer part by the rotation during centrifugation. The outward bending of the outer part in the lateral direction is prevented only by the outer and inner parts touching the seam (25). However, this contact must always be defined according to the invention, otherwise the sealing effect will be lost.
Aus der US-A-4,221,325 ist eine Zentrifuge bekannt, bei der Becher (34) vorgesehen sind, die sich über eine wulstartige Verdickung am obersten Rand am Gehäuse abstützen. Eine seitliche und eine untere Führung dieser Becher ist nicht vorgesehen.From US-A-4,221,325 a centrifuge is known in which cups (34) are provided which are supported on the housing by a bead-like thickening at the top edge. Lateral and lower guidance of these cups is not provided.
Es ergibt sich deshalb der große Nachteil, daß die gesamten auftretenden Kräfte über die Halterung am oberen Rand des Bechers übertragen werden müssen. Die Halterung muß insbesondere auch seitliche Führung beim Anlaufen und Abbremsen sowie die radiale Führung bei hohen Drehzahlen durchführen.
Da die zur Verfügung stehende Fläche der Halterung nur sehr klein ist, muß hier mit extremer Sorgfalt und entsprechenden Kosten gearbeitet werden.There is therefore the great disadvantage that the entire forces occurring must be transmitted via the holder at the top of the cup. The bracket must also perform lateral guidance when starting and braking as well as radial guidance at high speeds.
Since the available surface of the bracket is very small, extreme care and costs must be used here.
Aus der US-A-4,484,906 ist eine ähnliche Vorrichtung bekannt. Hier stützen sich allerdings die Becher (27) an der Innenseite des Außenteils (20) ab. Dadurch ist eine radiale Führung bei hohen Drehzahlen vorgesehen. Es bleibt aber der Nachteil bestehen, daß die seitliche Führung sowie die Führung in axialer Richtung der Becher (27) von der Verdickung (7) übernommen werden muß.A similar device is known from US-A-4,484,906. Here, however, the cups (27) are supported on the inside of the outer part (20). This provides radial guidance at high speeds. However, there remains the disadvantage that the lateral guidance and the guidance in the axial direction of the cups (27) must be taken over by the thickening (7).
Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, einen Winkelkopf für Zentrifugen der eingangs genannten Art so weiterzubilden, daß er bei herkömmlichen Lastaufnahmevermögen, wie vergleichbare Winkelköpfe des Standes der Technik, wesentlich kostengünstiger und einfacher hergestellt werden kann.The present invention is therefore based on the object of developing an angular head for centrifuges of the type mentioned in such a way that it can be manufactured much more cost-effectively and simply with conventional load-bearing capacities, such as comparable angular heads of the prior art.
Zur Lösung der gestellten Aufgabe ist die Erfindung durch die technische Lehre des Anspruches 1 gekennzeichnet.To achieve the object, the invention is characterized by the technical teaching of
Bevorzugt werden die beiden Teile im Bereich des horizontalen Deckflansches des Winkelkopfes miteinander verbunden, weil hier günstige Befestigungsflächen bestehen, nachdem die beiden Teile sich in diesem Bereich bevorzugt über Lappen und hierdurch ein großer Befestigungsbereich geschaffen wird.The two parts are preferably connected to one another in the region of the horizontal cover flange of the angle head, because there are favorable fastening surfaces after the two parts are in this Area preferably over rags and thereby a large fastening area is created.
Als Material für das relativ hochbelastete Außenteil wird bevorzugt ein Blechmaterial verwendet, welches am äußeren Rand nach innen eingezogen ist und damit eine stabile Auflage für den Bodenbereich der in die Aufnahmeöffnungen des Winkelkopfes eingesetzten Becher bildet. In die Becher, die in der Regel als Kunststoffhülsen ausgebildet sind, werden Glasröhrchen mit dem Untersuchungsmaterial eingesetzt.A sheet metal material is preferably used as the material for the relatively highly stressed outer part, which is drawn in at the outer edge and thus forms a stable support for the bottom region of the cups inserted into the receiving openings of the angle head. In the Beakers, which are usually designed as plastic sleeves, are inserted into glass tubes with the test material.
Der nach innen gezogene Kragen am äußeren Rand des Außenteils kann im rechten Winkel oder in abgerundeter Form ausgebildet sein und ragt über die Mitte des Röhrchenbodens, um somit eine Stützfläche für den Röhrchenboden während des Zentrifugiervorganges und auch im Stand zu gewährleisten.The inwardly drawn collar on the outer edge of the outer part can be formed at a right angle or in a rounded shape and protrudes over the center of the tube base, in order to thus ensure a support surface for the tube base during the centrifuging process and also when standing.
Auf diese Weise ist es möglich, das Außenteil (als Blechteil) im Drück- oder Ziehverfahren herzustellen, was wesentliche Herstellungsvorteile bringt.In this way, it is possible to produce the outer part (as a sheet metal part) using the push or pull method, which brings significant manufacturing advantages.
Andererseits kann das Innenteil aus einem kostengünstigen Kunststoffmaterial gespritzt oder gegossen werden und das Innenteil dient im wesentlichen nur als radial einwärts gerichtete Stützfläche für die in die Aufnahmebohrungen eingesetzten Becher und hat deshalb keine Zentrifugalkräfte zu übertragen.On the other hand, the inner part can be injection-molded or cast from an inexpensive plastic material and the inner part essentially serves only as a radially inwardly directed support surface for the cups inserted into the receiving bores and therefore does not have to transmit any centrifugal forces.
Die Trennfuge zwischen dem Innenteil und dem Außenteil wird bevorzugt im Bodenbereich des Bechers angebracht, um somit einen praktisch geschlossenen Winkelkopf zu gewährleisten, der damit besonders strömungsgünstig ausgebildet ist. Das Innenteil dient somit im Becherbereich im wesentlichen als Windschutz.The parting line between the inner part and the outer part is preferably applied in the base region of the cup, in order to ensure a practically closed angle head, which is thus particularly aerodynamically designed. The inner part thus essentially serves as a windbreak in the area of the cup.
Wichtig hierbei ist, daß das Innenteil jedoch gleichzeitig auch die Rotornabe ausbildet, und somit die Drehantriebskräfte, die auf den Winkelkopf wirken, über die im Umgebungsbereich der Rotornabe angeordnete Befestigung zwischen dem Innenteil und dem Außenteil auf das Außenteil zu übertragen.It is important here that the inner part also forms the rotor hub at the same time, and thus to transmit the rotary drive forces acting on the angular head to the outer part via the fastening arranged in the vicinity of the rotor hub between the inner part and the outer part.
Wie bereits schon eingangs erwähnt, überlappen sich in diesem Bereich das Innen- und das Außenteil und es können somit große, lastübertragende Flächen zwischen den beiden Teilen geschaffen werden, über die es auf einfache Weise möglich ist, einerseits die Zentrifugalkraft des Außenteils auf das Innenteil zu übertragen und andererseits die Drehmomentlasten vom Innenteil auf das Außenteil zu übertragen.As already mentioned at the beginning, the inner and outer parts overlap in this area and large, load-transmitting surfaces can thus be created between the two parts, by means of which it opens it is easily possible, on the one hand, to transfer the centrifugal force of the outer part to the inner part and, on the other hand, to transmit the torque loads from the inner part to the outer part.
Die Ausnehmungen an der Oberseite des Außenteils zum Aufnehmen der entsprechenden Becher sind elliptisch ausgebildet. Das Kunststoffteil ist im oberen und unteren Bereich jeweils ein Stück weit zylindrisch, also senkrecht ausgebildet, um daran günstige Auswuchtmassen befestigen zu können. Das heisst, am Innenteil sind am Innenumfang Ringräume ausgeformt, die nicht von den eingesteckten Bechern ausgefüllt werden, so daß in diese Ringräume entsprechende Auswuchtgewichte eingebracht werden können.The recesses on the top of the outer part for receiving the corresponding cups are elliptical. The plastic part is cylindrical to a certain extent in the upper and lower area, that is to say it is designed vertically, in order to be able to attach favorable balancing masses to it. This means that annular spaces are formed on the inner circumference, which are not filled by the inserted cups, so that appropriate balancing weights can be introduced into these annular spaces.
Der Erfindungsgegenstand der vorliegenden Neuerung ergibt sich nicht nur aus dem Gegenstand der einzelnen Schutzansprüche, sondern auch aus der Kombination der einzelnen Schutzansprüche untereinander.The subject matter of the present innovation results not only from the subject of the individual protection claims, but also from the combination of the individual protection claims with one another.
Alle in den Unterlagen - einschließlich der Zusammenfassung - offenbarten Angaben und Merkmale, insbesondere die in den Zeichnungen dargestellte räumliche Ausbildung werden als erfindungswesentlich beansprucht, soweit sie einzeln oder in Kombination gegenüber dem Stand der Technik neu sind.All of the information and features disclosed in the documents - including the summary -, in particular the spatial design shown in the drawings, are claimed to be essential to the invention, insofar as they are new compared to the prior art, individually or in combination.
Im folgenden wird die Erfindung anhand von lediglich einen Ausführungsweg darstellende Zeichnungen näher erläutert. Hierbei gehen aus den Zeichnungen und ihrer Beschreibung weitere erfindungswesentliche Merkmale und Vorteile der Erfindung hervor.The invention is explained in more detail below with the aid of drawings which illustrate only one embodiment. Here, from the drawings and their description, further features and advantages of the invention that are essential to the invention emerge.
Es zeigen:
- Figur 1:
- Schnitt durch einen Winkelkopf nach der Neuerung,
- Figur 2:
- Draufsicht auf den Winkelkopf nach
Figur 1.
- Figure 1:
- Cut through an angle head after the innovation,
- Figure 2:
- Top view of the angle head according to FIG. 1.
Der Winkelkopf 1 besteht im wesentlichen aus einem topfförmigen, bevorzugt aus einem Metallblech gefertigten Außenteil 2, welches zunächst einen oberen, horizontal verlaufenden Deckring 6 vom Außenteil 2 aufweist.The
Im Bereich des Deckringes 6 sind elliptische Ausnehmungen 10 eingeformt, in welche Becher 9 einsetzbar sind, in welche Becher wiederum nicht näher dargestellte Glasröhrchen mit der Untersuchungsflüssigkeit einsteckbar sind.In the area of the
Von dem Aupenumfang des oberen, horizontalen Deckringes 6 erstreckt sich das topfförmige Außenteil 2 schräg, radial nach außen gerichtet und bildet dort eine Außenwand 11 vom Außenteil 2, die in Bodennähe der Becher in ein nach innen gerichtetes, abgekröpftes, ringförmiges Bodenteil 12 übergeht.From the outer circumference of the upper,
Wichtig ist, daß die Länge des Bodenteils 12 vom Außenteil 2 so ist, daß sich das Bodenteil 12 über die Längsmittenachse 13 der Becher 9 hinaus erstreckt, so daß die Becher 9 in allen Funktionsstellungen auf dem Bodenteil 12 aufsitzen. Das Bodenteil 12 überträgt also die Zentrifugallast des Bechers 9 auf die Außenwand 11 des Aupenteils 2 und diese überträgt die Zentrifugallast auf den horizontalen Deckring 6 des Außenteils 2.It is important that the length of the
Die Innenwandung des Winkelkopfes 1 wird durch ein ebenfalls topfförmiges Innenteil 3 gebildet, welches bevorzugt aus einem Kunststoffteil ausgebildet ist. Das Innenteil 3 weist die Aufnahmebohrung 5 für die Rotornabe 4 auf und bildet ebenso einen horizontalen, scheibenförmigen Bereich, auf dem überlappend der Deckring 6 des Außenteils 2 angeordnet ist. Der Deckring 2 ist mit dem Innenteil 3 im Bereich der Rotornabe 4 über am Umfang verteilt angerodnete Schrauben verbunden, die in die Schraubenbohrung 7 eingesetzt werden.The inner wall of the
Ausgehend von der horizontalen Fläche der Rotornabe 4 geht diese in eine radial nach außen geneigte Innenwand 15 des Innenteils 3 über, wobei im Bereich der Innenwand 15 Abkröpfungen 16,18 angeordnet sind, welche jeweils einen Ringraum 17,19 bilden, in den Auswuchtgewichte eingebracht werden können.Starting from the horizontal surface of the rotor hub 4, it goes into a radially outwardly inclined
Im Bodenbereich bildet das Innenteil 3 einen horizontal gerichteten Boden 25, der seinerseits an seinem radial äußeren Ende über ein schräg auswärts abgekröpftes Teil 26 übergeht. Das Teil 26 bildet mit dem Bodenteil 12 des Außenteils 2 eine Trennfuge 24, über die keine Last übertragen wird.In the bottom area, the
Entsprechend der Winkelstellung der Längsmittenachse 13 des Bechers 9 liegt somit das Bodenteil 12 des Außenteils 2 senkrecht zur Längsmittenachse 13 des Bechers 9 und nimmt bei Position 14 die Zentrifugalkraft auf, die vom Becherboden 21 auf das Bodenteil 12 des Außenteils 2 bei Position 14 ausgeübt wird.Corresponding to the angular position of the
Zur Verschiebungssicherung der in die elliptischen Ausnehmungen 10 eingesetzten Becher 9 sind am Außenumfang des Innenteils 3 gemäß Figur 2 jeweils paarweise zueinander parallel angeordnete Stege 20 am Innenteil 3 angeformt, welche die seitliche Verschiebungsbegrenzung für die in die Aufnahmebohrungen 10 eingesetzten Becher 9 bilden.To secure the displacement of the cups 9 inserted into the
Die Stege 20 liegen hierbei etwa auf halber Höhe der Becherlänge unterhalb des Kreisringbereichs 8 der elliptischen Ausnehmungen 10.The
Claims (10)
- Angle head for centrifuges for receiving a number of beakers which are arranged in recesses of the angle head at a fixed angle inclined to the perpendicular, in which the base of the respective beaker is supported by supporting surfaces of the angle head, wherein the angle head (1) is constructed at least in two parts and consists of an outer part (2) which can be mechanically loaded as well an inner part (3) which cannot be loaded as much, that the inner part (3) is connected with the outer part (2) at least in the area of the rotor hub (4), characterised in that at its external circumference the outer part (2) has a base part (12) close to the base of the beakers (9) which is bent inwards radially at an angle and which projects beyond the centre of the beaker base (21) and on which the beaker (9) is supported, and that the radially inwardly located supporting surface for the beaker (9) is formed by the inner part (3).
- Angle head according to claim 1, characterised in that the base part (12) of the outer part (2) is constructed to be concave for the beaker base (21) in the area of the supporting surface for the beaker.
- Angle head according to claim 1, characterised in that the base part (12) of the outer part (2) is constructed to be straight.
- Angle head according to one of the claims 2 or 3, characterised in that the plane of the base part (12) of the outer part (2) forms an acute angle (22) with the perpendicular.
- Angle head according to one of the claims 1 - 4, characterised in that the outer part (2) consists of a sheet metal part.
- Angle head according to one of the claims 1 - 5, characterised in that the inner part (3) consists of a plastics part.
- Angle head according to one of the claims 1 - 6, characterised in that the inner part (3) has the receiving bore (5) for the drive shaft of the rotor.
- Angle head according to one of the claims 1 - 7, characterised in that the outer part (2) has a horizontal cover ring (6) which in the surrounding area of the rotor hub (4) is connected with the inner part (3).
- Angle head according to one of the claims 1 - 8, characterised in that at the inner circumference the inner part (3) forms one or more annular chambers (19) into which counterbalancing weights for example can be inserted.
- Angle head according to one of the claims 1 - 9, characterised in that for the lateral limiting of the receptacle (10) in the angle head (1), on the inner part (3) distributed on the circumference lateral webs (20) are arranged at a mutual distance from each other, which safeguard the beakers (9) against displacement in the receptacle (10) in the circumferential direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9016288U | 1990-11-30 | ||
| DE9016288U DE9016288U1 (en) | 1990-11-30 | 1990-11-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0487915A1 EP0487915A1 (en) | 1992-06-03 |
| EP0487915B1 true EP0487915B1 (en) | 1994-07-27 |
Family
ID=6859848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91118465A Expired - Lifetime EP0487915B1 (en) | 1990-11-30 | 1991-10-30 | Angled rotor head for centrifuges |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5232432A (en) |
| EP (1) | EP0487915B1 (en) |
| DE (2) | DE9016288U1 (en) |
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|---|---|---|---|---|
| JP2902116B2 (en) * | 1993-01-14 | 1999-06-07 | コンポジット ローター，インコーポレイテッド | Ultra-lightweight composite centrifugal rotor |
| US5354254A (en) * | 1993-04-15 | 1994-10-11 | Separation Technology, Inc. | Centrifuge rotor head with tube neck support |
| DE29914207U1 (en) * | 1999-08-14 | 2000-09-21 | Sigma Laborzentrifugen Gmbh | Rotor for a laboratory centrifuge |
| US6899810B1 (en) | 2000-08-11 | 2005-05-31 | Millipore Corporation | Fluid filtering device |
| DE102004062232B4 (en) * | 2004-12-23 | 2013-01-10 | Thermo Electron Led Gmbh | Rotor for laboratory centrifuges |
| US8323169B2 (en) * | 2009-11-11 | 2012-12-04 | Fiberlite Centrifuge, Llc | Fixed angle centrifuge rotor with tubular cavities and related methods |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL26529C (en) * | 1926-12-22 | |||
| US2447330A (en) * | 1946-05-16 | 1948-08-17 | Grebmeier Joseph | Rotor for ultracentrifuge machines |
| US2878992A (en) * | 1956-12-28 | 1959-03-24 | Beckman Instruments Inc | Centrifuge apparatus and rotor therefor |
| US3720368A (en) * | 1971-07-15 | 1973-03-13 | Bio Dynamics Inc | Centrifuge with blood sample holding means |
| AT308712B (en) * | 1971-10-08 | 1973-07-25 | Immuno Ag | Benchtop centrifuge |
| US3825178A (en) * | 1971-12-17 | 1974-07-23 | American Hospital Supply Corp | Centrifuge rotor |
| US3970245A (en) * | 1975-05-21 | 1976-07-20 | Dr. Molter Gmbh | Universal centrifuge |
| JPS57937Y2 (en) * | 1978-03-13 | 1982-01-07 | ||
| US4509940A (en) * | 1981-05-11 | 1985-04-09 | E. I. Du Pont De Nemours And Company | Fixed angle pelleting rotor configured to provide a maximum clearing rate factor |
| US4412830A (en) * | 1982-06-24 | 1983-11-01 | Beckman Instruments, Inc. | Cover for centrifuge rotor |
| US4449965A (en) * | 1982-10-04 | 1984-05-22 | Beckman Instruments, Inc. | Shell type centrifuge rotor having controlled windage |
| US4484906A (en) * | 1983-05-02 | 1984-11-27 | Beckman Instruments, Inc. | Shell type centrifuge rotor retaining ruptured tube sample |
| DE3334655A1 (en) * | 1983-09-24 | 1985-04-18 | Heraeus-Christ Gmbh, 3360 Osterode | Centrifuge rotor |
| DE3343846A1 (en) * | 1983-12-03 | 1985-06-13 | Heraeus-Christ Gmbh, 3360 Osterode | Centrifuge rotor |
| US4553955A (en) * | 1984-06-01 | 1985-11-19 | Beckman Instruments, Inc. | Multi-angle adapter for fixed angle centrifuge rotor |
| DE3601789C1 (en) * | 1986-01-22 | 1987-03-05 | Eppendorf Geraetebau Netheler | Centrifuge rotor |
| DE3703514A1 (en) * | 1987-02-05 | 1988-08-18 | Hettich Andreas Fa | ANGLE HEAD FOR CENTRIFUGES |
| NL8700642A (en) * | 1987-03-18 | 1988-10-17 | Ultra Centrifuge Nederland Nv | CENTRIFUGE FOR SEPARATING LIQUIDS. |
| EP0296254B1 (en) * | 1987-06-20 | 1991-03-20 | Eppendorf-Netheler-Hinz Gmbh | Centrifuge rotor |
| US4820257A (en) * | 1988-05-10 | 1989-04-11 | Beckman Instruments, Inc. | Rotor noise suppression |
-
1990
- 1990-11-30 DE DE9016288U patent/DE9016288U1/de not_active Expired - Lifetime
-
1991
- 1991-10-30 EP EP91118465A patent/EP0487915B1/en not_active Expired - Lifetime
- 1991-10-30 DE DE59102352T patent/DE59102352D1/en not_active Expired - Fee Related
- 1991-11-27 US US07/799,356 patent/US5232432A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59102352D1 (en) | 1994-09-01 |
| DE9016288U1 (en) | 1991-10-10 |
| US5232432A (en) | 1993-08-03 |
| EP0487915A1 (en) | 1992-06-03 |
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