EP0487915A1 - Angled rotor head for centrifuges - Google Patents

Angled rotor head for centrifuges Download PDF

Info

Publication number
EP0487915A1
EP0487915A1 EP91118465A EP91118465A EP0487915A1 EP 0487915 A1 EP0487915 A1 EP 0487915A1 EP 91118465 A EP91118465 A EP 91118465A EP 91118465 A EP91118465 A EP 91118465A EP 0487915 A1 EP0487915 A1 EP 0487915A1
Authority
EP
European Patent Office
Prior art keywords
head according
angle
inner part
cup
angular
Prior art date
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.)
Granted
Application number
EP91118465A
Other languages
German (de)
French (fr)
Other versions
EP0487915B1 (en
Inventor
Günter Eberle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andreas Hettich GmbH and Co KG
Original Assignee
Andreas Hettich GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Andreas Hettich GmbH and Co KG filed Critical Andreas Hettich GmbH and Co KG
Publication of EP0487915A1 publication Critical patent/EP0487915A1/en
Application granted granted Critical
Publication of EP0487915B1 publication Critical patent/EP0487915B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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 subject of the present innovation is 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.
  • the present innovation is therefore based on the object of developing an angle 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 angle heads of the prior art.
  • the innovation is characterized in that the outer part on its outer periphery near the bottom of the cup has a radially inwardly bent bottom part which protrudes beyond the center of the cup bottom and that the radially inner support surface for the cup through the inner part is formed.
  • 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 here, after the two parts are preferably created in this region by means of rags and thereby a large fastening region.
  • 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 provided in the base region of the cup, in order to ensure a practically closed angle head, which is therefore particularly aerodynamically designed.
  • the inner part thus essentially serves as a windbreak in the cup area.
  • the inner part also forms the rotor hub at the same time, and thus the rotational drive forces acting on the angular head are transmitted 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 transfer 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 on the inner part 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, preferably made of a sheet metal outer part 2, which initially has an upper, horizontally extending cover ring 6.
  • 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 pot-shaped outer part 2 extends obliquely, directed radially outwards and forms a side ring 11 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 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 transfers the centrifugal load of the cup 9 to the side ring 11 and the side ring 11 transfers 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 area of the rotor hub 4 by means of screws 7 distributed around the circumference.
  • the inner part 3 forms a horizontally directed part 25, which in turn merges at its radially outer end via a part 26 which is bent obliquely outwards.
  • the part 26 forms a parting line 24 with the floor area 12, via which no load is transmitted.
  • the base part 12 is thus perpendicular to the longitudinal center axis of the cup 9 and, at position 14, absorbs the centrifugal force which is exerted by the cup base 21 on the base part 12 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, as shown in FIG.
  • 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.

Landscapes

  • Centrifugal Separators (AREA)

Abstract

An angled rotor head (1) for centrifuges serves to hold a number of beakers which are arranged inclined at a fixed angle with respect to the vertical in recesses of the angled rotor head. …<??>The angled rotor head (1) is of at least two-part construction and consists of a mechanically loadable outer part (2) and an inner part (3) which is loadable to a lesser degree, the inner part (3) being connected to the outer part (2) at least in the region of the rotor hub (4) and the outer part having on its outer circumference near to the floor of the beakers (9) a floor part (12) which is bent radially inwards at the angle and which projects over the centre of the beaker floor (21) and receives the centrifugal force during the centrifugal process. …<IMAGE>…

Description

Gegenstand der vorliegenden Neuerung 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 subject of the present innovation is 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. As a rule, 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.

Der vorliegenden Neuerung 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 innovation is therefore based on the object of developing an angle 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 angle heads of the prior art.

Zur Lösung der gestellten Aufgabe ist die Neuerung dadurch gekennzeichnet, daß das Außenteil an seinem Außenumfang in Bodennähe der Becher ein radial im Winkel einwärts abgebogenes Bodenteil aufweist, welches über die Mitte des Becherbodens ragt und daß die radial innen liegende Stützfläche für den Becher durch das Innenteil gebildet ist.To solve the problem, the innovation is characterized in that the outer part on its outer periphery near the bottom of the cup has a radially inwardly bent bottom part which protrudes beyond the center of the cup bottom and that the radially inner support surface for the cup through the inner part is formed.

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 here, after the two parts are preferably created in this region by means of rags and thereby a large fastening region.

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 pushing or pulling 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 provided in the base region of the cup, in order to ensure a practically closed angle head, which is therefore particularly aerodynamically designed. The inner part thus essentially serves as a windbreak in the cup area.

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 the rotational drive forces acting on the angular head are transmitted 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 transfer 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 on the inner part 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 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 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. Further features and advantages of the invention which are essential to the invention emerge from the drawings and their description.

Es zeigen:

Figur 1:
Schnitt durch einen Winkelkopf nach der Neuerung,
Figur 2:
Draufsicht auf den Winkelkopf nach Figur 1.
Show it:
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 aufweist.The angle head 1 essentially consists of a cup-shaped, preferably made of a sheet metal outer part 2, which initially has an upper, horizontally extending cover ring 6.

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 cover ring 6, 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.

Von dem Außenumfang des oberen, horizontalen Deckringes 6 erstreckt sich das topfförmige Außenteil 2 schräg, radial nach außen gerichtet und bildet dort einen Seitenring 11, der in Bodennähe der Becher in ein nach innen gerichtetes, abgekröpftes, ringförmiges Bodenteils 12 übergeht.From the outer circumference of the upper, horizontal cover ring 6, the pot-shaped outer part 2 extends obliquely, directed radially outwards and forms a side ring 11 there, which near the bottom of the cup merges into an inwardly directed, cranked, annular bottom part 12.

Wichtig ist, daß die Länge des Bodenteils 12 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 den Seitenring 11 und der Seitenring 11 überträgt die Zentrifugallast auf den horizontalen Deckring 6 des Außenteils 2.It is important that the length of the base part 12 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 transfers the centrifugal load of the cup 9 to the side ring 11 and the side ring 11 transfers the centrifugal load to the horizontal cover ring 6 of the outer part 2.

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 angeordnete Schrauben 7 verbunden.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 area of the rotor hub 4 by means of screws 7 distributed around the circumference.

Ausgehend von der horizontalen Fläche der Rotornabe 4 geht diese in eine radial nach außen geneigte Innenscheibe 15 über, wobei im Bereich der Innenscheibe 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, this merges into a radially outwardly inclined inner disc 15, in the area of the inner disc 15 bends 16, 18 are arranged, each of which forms an annular space 17, 19, into which the balancing weights are introduced can.

Im Bodenbereich bildet das Innenteil 3 einen horizontal gerichteten Teil 25, der seinerseits an seinem radial äußeren Ende über einen schräg auswärts abgekröpftes Teil 26 übergeht. Das Teil 26 bildet mit dem Bodenbereich 12 eine Trennfuge 24, über die keine Last übertragen wird.In the bottom area, the inner part 3 forms a horizontally directed part 25, which in turn merges at its radially outer end via a part 26 which is bent obliquely outwards. The part 26 forms a parting line 24 with the floor area 12, via which no load is transmitted.

Entsprechend der Winkelstellung der Längsmittenachse 13 des Bechers 9 liegt somit das Bodenteil 12 senkrecht zur Längsmittelachse des Bechers 9 und nimmt bei Position 14 die Zentrifugalkraft auf, die vom Becherboden 21 auf das Bodenteil 12 bei Position 14 ausgeübt wird.Corresponding to the angular position of the longitudinal center axis 13 of the cup 9, the base part 12 is thus perpendicular to the longitudinal center axis of the cup 9 and, at position 14, absorbs the centrifugal force which is exerted by the cup base 21 on the base part 12 at position 14.

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 elliptical recesses 10, 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, as shown in FIG.

Die Stege 20 liegen hierbei etwa auf halber Höhe der Becherlänge unterhalb des Kreisringbereichs 8 der elliptischen Ausnehmungen 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.

ZEICHNUNGS-LEGENDEDRAWING LEGEND

11
WinkelkopfAngle head
22nd
AußenteilOuter part
33rd
Innenteilinner part
44th
RotornabeRotor hub
55
AufnahmebohrungLocation hole
66
DeckringCover ring
77
Schraubescrew
88th
KreisringbereichCircular ring area
99
Bechercups
1010th
AusnehmungRecess
1111
SeitenringSide ring
1212
BodenteilBottom part
1313
LängsmittenachseLongitudinal center axis
1414
Positionposition
1515
InnenscheibeInner pane
1616
AbkröpfungBend
1717th
RingraumAnnulus
1818th
AbkröpfungBend
1919th
RingraumAnnulus
2020th
Stegweb
2121
BecherbodenCup bottom
2222
Winkelangle
2323
Vertikalevertical
2424th
TrennfugeParting line
2525th
Teilpart
2626
Teilpart

Claims (10)

Winkelkopf für Zentrifugen zur Aufnahme von einer Anzahl von Bechern, die in einem festgelegten Winkel geneigt zur Vertikalen in Ausnehmungen des Winkelkopfes angerodnet sind, wobei sich der Beckenboden des jeweiligen Beckens an Stützflächen des Winkelkopfes abstützt, wobei der Winkelkopf (1) mindestens zweiteilig ausgebildet ist und aus einem mechanisch belastbaren Außenteil (2), sowie aus einem weniger belastbaren Innenteil (3) besteht, daß das Innenteil (3) mit dem Außenteil (2) wenigstens im Bereich der Rotornabe (4) verbunden sind, dadurch gekennzeichnet, daß das Außenteil (2) an seinem Außenumfang in Bodennähe der Becher (9) ein radial im Winkel einwärts abgebogenes Bodenteil (12) aufweist, welches über die Mitte des Becherbodens (21) ragt und daß die radial innen liegende Stützfläche für den Becher (9) durch das Innenteil (3) gebildet ist.Angle head for centrifuges for holding a number of cups which are inclined at a fixed angle to the vertical in recesses of the angle head, the pelvic floor of the respective pool being supported on supporting surfaces of the angle head, the angle head (1) being at least in two parts and consists of a mechanically resilient outer part (2) and a less resilient inner part (3) that the inner part (3) is connected to the outer part (2) at least in the area of the rotor hub (4), characterized in that the outer part ( 2) on its outer circumference near the bottom of the cup (9) has a radially inwardly bent bottom part (12) which protrudes above the center of the cup bottom (21) and that the radially inner support surface for the cup (9) through the inner part (3) is formed. Winkelkopf nach Anspruch 1, dadurch gekennzeichnet, daß das Bodenteil (12) im Bereich der Stützfläche für den Becherboden (21) konkav ausgebildet ist.Angular head according to claim 1, characterized in that the base part (12) is concave in the region of the support surface for the cup base (21). Winkelkopf nach Anspruch 1, dadurch gekennzeichnet, daß das Bodenteil (12) gerade ausgebildet ist.Angular head according to claim 1, characterized in that the base part (12) is straight. Winkelkopf nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, daß die Ebene des Bodenteils (12) einen Winkel (22) mit zur Vertikalen (23) bildet.Angle head according to one of claims 2 or 3, characterized in that the plane of the base part (12) forms an angle (22) with the vertical (23). Winkelkopf nach einem der Ansprüche 1 - 4, dadurch gekennzeichnet, daß das Außenteil (2) aus einem Blechteil besteht.Angle head according to one of claims 1-4, characterized in that the outer part (2) consists of a sheet metal part. Winkelkopf nach einem der Ansprüche 1 - 5, dadurch gekennzeichnet, daß das Innenteil (3) aus einem Kunststoffteil besteht.Angle head according to one of claims 1-5, characterized in that the inner part (3) consists of a plastic part. Winkelkopf nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, daß das Innenteil (3) die Aufnahmebohrung (5) für die Antriebsachse des Rotors aufweist.Angular head according to one of claims 1-6, characterized in that the inner part (3) has the receiving bore (5) for the drive axis of the rotor. Winkelkopf nach einem der Ansprüche 1 - 7, dadurch gekennzeichnet, daß das Außenteil (2) einen horizontalen Deckring (6) aufweist, der mit dem Innenteil (3) im Umgebungsbereich der Rotornabe (4) verbunden ist.Angular head according to one of claims 1-7, characterized in that the outer part (2) has a horizontal cover ring (6) which is connected to the inner part (3) in the vicinity of the rotor hub (4). Winkelkopf nach einem der Ansprüche 1 - 8, dadurch gekennzeichnet, daß das Innenteil (3) am Innenumfang eine oder mehrere Ringräume (19) ausbildet.Angular head according to one of claims 1-8, characterized in that the inner part (3) forms one or more annular spaces (19) on the inner circumference. Winkelkopf nach einem der Ansprüche 1 - 9, dadurch gekennzeichnet, daß zur seitlichen Begrenzung der Aufnahmebohrungen (5) im Winkelkopf (1) am Innenteil (3) seitliche Stege (20) in gegenseitigem Abstand am Umfang verteilt angeordnet sind, welche die Becher (9) gegen Verschiebung in der Aufnahmebohrung (5) in Umfangsrichtung sichern.Angular head according to one of claims 1 to 9, characterized in that, for the lateral limitation of the receiving bores (5) in the angular head (1) on the inner part (3), lateral webs (20) are arranged at a mutual spacing on the circumference, which the cups (9 ) secure against displacement in the receiving bore (5) in the circumferential direction.
EP91118465A 1990-11-30 1991-10-30 Angled rotor head for centrifuges Expired - Lifetime EP0487915B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9016288U DE9016288U1 (en) 1990-11-30 1990-11-30 Angle head for centrifuges
DE9016288U 1990-11-30

Publications (2)

Publication Number Publication Date
EP0487915A1 true EP0487915A1 (en) 1992-06-03
EP0487915B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1077088A1 (en) * 1999-08-14 2001-02-21 Sigma Laborzentrifugen Gmbh Rotor for laboratory centrifuge

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960700102A (en) * 1993-01-14 1996-01-19 게셈 맬리크마다니 모하메드 Ultra-light composite centrifuge rotor (ULTRA-LIGHT COMPOSITE CENTRIFUGE ROTOR)
US5354254A (en) * 1993-04-15 1994-10-11 Separation Technology, Inc. Centrifuge rotor head with tube neck support
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

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2156519A1 (en) * 1971-10-08 1973-06-01 Immuno Ag Bench centrifuge - having separate supports for test tubes and microtitration plates
FR2270945A1 (en) * 1971-12-17 1975-12-12 American Hospital Supply Corp
US4221325A (en) * 1978-03-13 1980-09-09 Kabushiki Kaisha Kubota Seisakusho Cooling structure for a centrifuge
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
DE3601789C1 (en) * 1986-01-22 1987-03-05 Eppendorf Geraetebau Netheler Centrifuge rotor

Family Cites Families (13)

* Cited by examiner, † Cited by third party
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
US3970245A (en) * 1975-05-21 1976-07-20 Dr. Molter Gmbh Universal centrifuge
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
US4553955A (en) * 1984-06-01 1985-11-19 Beckman Instruments, Inc. Multi-angle adapter for fixed angle 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.
DE3768808D1 (en) * 1987-06-20 1991-04-25 Eppendorf Geraetebau Netheler CENTRIFUGAL ROTOR.
US4820257A (en) * 1988-05-10 1989-04-11 Beckman Instruments, Inc. Rotor noise suppression

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2156519A1 (en) * 1971-10-08 1973-06-01 Immuno Ag Bench centrifuge - having separate supports for test tubes and microtitration plates
FR2270945A1 (en) * 1971-12-17 1975-12-12 American Hospital Supply Corp
US4221325A (en) * 1978-03-13 1980-09-09 Kabushiki Kaisha Kubota Seisakusho Cooling structure for a centrifuge
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
DE3601789C1 (en) * 1986-01-22 1987-03-05 Eppendorf Geraetebau Netheler Centrifuge rotor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1077088A1 (en) * 1999-08-14 2001-02-21 Sigma Laborzentrifugen Gmbh Rotor for laboratory centrifuge

Also Published As

Publication number Publication date
EP0487915B1 (en) 1994-07-27
US5232432A (en) 1993-08-03
DE9016288U1 (en) 1991-10-10
DE59102352D1 (en) 1994-09-01

Similar Documents

Publication Publication Date Title
DE2920244A1 (en) ROTARY MOWER
DE6901422U (en) DOUBLE WALLED CONTAINER.
DE2302102A1 (en) ROTOR FOR A CENTRIFUGE
DE2132556C3 (en) Gyroscope
EP0487915A1 (en) Angled rotor head for centrifuges
CH643158A5 (en) CENTRIFUGE.
DE8528786U1 (en) container
DE3016591A1 (en) CONTAINER
EP3110557B1 (en) Centrifuge
DE102016118046B4 (en) Hygienic pendulum foot
EP0344471B1 (en) Spindle driven by a single electric motor in a spinning machine
DE1685654C3 (en) Tube or bobbin holder for spinning and twisting spindles
DE3000785C2 (en) Thin-walled plastic bottle
EP0388667B1 (en) Centrifuge rotor with test-tubes to be inserted in the rotor
EP0649924B1 (en) Yarn severing device of a ring-spinning or ring-twisting spindle
DE4480716C2 (en) Pulley
DE69913394T2 (en) Base plate for attaching an element
DE19854354B4 (en) spindle bearing
DE3510183A1 (en) Device for holding glasses, in particular drinking glasses
EP0075793B1 (en) Storage rack for oblong fuel elements
DE3540666A1 (en) DEVICE FOR PLOT RIGHT ALIGNMENT OF A STRUCTURE ASSEMBLY CONNECTED TO A BASE, ADJUSTABLE TO TURN AND TILT
DE3724091C1 (en) Laboratory centrifuge
DE3428819C2 (en)
DE2124894A1 (en) Bearing support of electrical machines with a horizontal shaft
EP2778089B1 (en) Stackable cup

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19920731

17Q First examination report despatched

Effective date: 19930728

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 59102352

Country of ref document: DE

Date of ref document: 19940901

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940830

ITF It: translation for a ep patent filed

Owner name: STUDIO INTERN. DOTT. COPPI S.N.C.

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20061031

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20081127

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20081021

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20081024

Year of fee payment: 18

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071030

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091102

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100501

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091030