WO1983004379A1 - Centrifuge/rotor attachment assembly - Google Patents

Centrifuge/rotor attachment assembly Download PDF

Info

Publication number
WO1983004379A1
WO1983004379A1 PCT/US1983/000319 US8300319W WO8304379A1 WO 1983004379 A1 WO1983004379 A1 WO 1983004379A1 US 8300319 W US8300319 W US 8300319W WO 8304379 A1 WO8304379 A1 WO 8304379A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
shaft
hub
centrifuge
ized
Prior art date
Application number
PCT/US1983/000319
Other languages
French (fr)
Inventor
Herschel E. Wright
Original Assignee
Beckman Instruments, Inc.
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 Beckman Instruments, Inc. filed Critical Beckman Instruments, Inc.
Publication of WO1983004379A1 publication Critical patent/WO1983004379A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
    • F16D1/09—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
    • F16D1/092—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces the pair of conical mating surfaces being provided on the coupled hub and shaft
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/08—Arrangement or disposition of transmission gearing ; Couplings; Brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/06—Releasable fastening devices with snap-action
    • F16B21/08—Releasable fastening devices with snap-action in which the stud, pin, or spigot has a resilient part
    • F16B21/088—Releasable fastening devices with snap-action in which the stud, pin, or spigot has a resilient part the stud, pin or spigot being integrally formed with the component to be fastened, e.g. forming part of the sheet, plate or strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/02—Casings; Lids
    • B04B2007/025—Lids for laboratory centrifuge rotors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
    • B04B9/08—Arrangement or disposition of transmission gearing ; Couplings; Brakes
    • B04B2009/085—Locking means between drive shaft and rotor

Definitions

  • Figure 1 is a partial sectional view of the present invention's attachment assembly with the connect ⁇ ing shaft in the unlocked position;
  • the stripping sleeve 64 has an interior opening 68 having a diameter which is approximately the same as the diameter of the connecting shaft 24 and the diameter of the opening 56 in the re ⁇ taining ring 54.

Abstract

A rotor attachment assembly to provide efficient and secure connection between a rotor (10) and a centrifuge drive mechanism (18). The assembly is designed in such a manner that not only attachment, but also disconnection is accomplished in a convenient one-step operation. The utilization of a single connecting shaft (24) with flexible fingers (30) contributes to the ease of operation as well as the ease of manufacture of the assembly.

Description

1 CENTRIFUGE/ROTOR ATTACHMENT ASSEMBLY
Background of the Invention '* The present invention is directed to high speed centrifuges and, more particularly, is directed to the 5 connection between a centrifuge rotor and the drive mech¬ anism in a centrifuge.
Centrifuges are designed to create a high force field that is utilized in clinical as well as laboratory 10 analysis of various fluid samples. The centrifuge rotors rotate at very high speeds to create the tremendous G forces necessary to cause the separation of the constitu¬ ents of the fluid sample for analysis.
15 In certain centrifuges, it is necessary to provide positive engagement between the rotor and the drive mechanism to prevent relative motion between the drive hub on which the rotor rests and the rotor. The torque drive in some centrifuges is low enough in con-
20 junction with the relatively high weight of the rotor that no relative motion will occur between the rotor and the drive hub. In this situation, no positive connection or engagement is necessary between the rotor and the drive hub. 25
But where the rotor tends to be lighter and where the drive system does operate with a high torque, need exists for positive connection or attachment between ■» the rotor and the centrifuge drive hub. Otherwise, some
". 30 relative motion would occur between the rotor and the drive hub which is not acceptable for longevity of the system. Further, the existence of relative motion be¬ tween the rotor and the drive hub affects the ability to control and determine the speed of the rotor. This un- 35 desirable relative motion also adversely affects rotor dynamics. In certain high speed operation, the hub may vibrate within the rotor, causing metal- o-metal fretting which is not acceptable for the proper operation of the centrifuge.
One typical approach for providing the connec¬ tion between the rotor and the drive hub is the utiliza¬ tion of a threaded stud. The stud extends up through the rotor and a handle is used to properly secure the rotor into the drive hub. In other configurations, the drive hub has vertical flats on it to mate with flat areas within the rotor to provide the necessary positive con¬ nection to prevent relative motion between the rotor and the drive mechanism.
Typically, rotors have to be removed from the centrifuge subsequent to the centrifugation run. Threaded types of connection mechanisms become very time consuming in laboratory practice where the rotor may be removed and reinserted in the centrifuge several times during a relatively short period of time.
Summary of the Invention The present invention is directed to an attach¬ ment assembly for securing a centrifuge rotor to the drive mechanism in a centrifuge in such a manner that no relative motion"will occur between the rotor and the drive mechanism. In particular, the attachment assembly utilizes a connecting shaft which is designed to operate in a convenient one-step operation to not only provide the connection between the rotor and the drive hub, but also provide disengagement of the rotor from the drive hub. The elongated connecting shaft has a plurlity of flexible fingers which, when moved to a first position in a longitudinal direction, will provide for the locking of the rotor on the drive hub. The movement of the con- necting shaft in the same longitudinal direction to a second position will provide for the unlocking of the rotor from the drive hub.
Brief Description of the Drawings Figure 1 is a partial sectional view of the present invention's attachment assembly with the connect¬ ing shaft in the unlocked position;
Figure 2 is a partial sectional view similar to Figure 1 with the connecting shaft moved in a direction toward its locked position;
Figure 3 is a sectional view similar to Figure 1 with the connecting shaft in its locked position;
Figure 4 is a sectional view similar to Figure 1 with the connecting shaft in its disengaging position; and
Figure 5 is a sectional view similar to Figure
1 with the connecting shaft moved toward its unlocked position.
Brief Description of the Invention In Figure 1, a rotor 10 is shown having a body portion 12 and a lid 14. Fluid samples are placed in the body portion 12 of the rotor 10 for centrifugation. The rotor is mounted on a drive hub 16 that is connected to a drive shaft 18. The drive hub 16 is located within a rotor chamber (not shown) while the drive shaft 18 is connected below the rotor chamber to drive means (not shown) for spinning the shaft at very high speeds. The rotational speed of the drive shaft 18 is imparted to the rotor when placed on the rotor hub 16. The rotor will spin at a high speed of rotation to create the necessary centrifugal forces to provide the separation of the con¬ stituent parts of the fluid samples. Located within the body portion 12 of the rotor is a drive hub recess 20 for receipt of the drive hub 16.
in certain arrangements of centrifuge drive systems and rotors, the only connection necessary between the rotor and the drive hub is the physical contact be¬ tween the two items. If the weight of the rotor is suf¬ ficient and the drive has a relatively low torque, the drive hub will provide the proper transfer of rotation to the rotor 10 without any relative motion between the drive hub and the rotor. However, in some instances when the rotor is not of sufficient weight and when the drive mechanism does not have low torque, it is necessary to provide a connection mechanism*between the rotor and the drive hub so that no relative motion will occur between the two.
In the present invention an attachment assembly 22 is utilized for providing connection between the rotor and the drive hub 16. The attachment assembly includes an elongate connecting shaft 24 that is slidably posi¬ tioned within an opening 26 in the lid 14. The connect¬ ing shaft 24 has at its lower end with respect to Figure i at least two flexible fingers 30 which in their relaxed position have an exterior diameter the same as the diam¬ eter of the connecting shaft 24 above the area of the fingers 30. Located on the locking end 32 of each of the flexible fingers 30 is an anchoring collar section 34 which together form a collar with an exterior diameter greater than the diameter formed by the fingers 30 or the main portion of the connecting shaft 24. This difference in diameter forms an anchoring ledge 36 on each finger. This anchoring ledge 36 will be utilized for providing the locking function of this connecting shaft as will be explained below.
The rotor lid 14 has a spring recess 38 which receives a biasing spring 40. The biasing spring 40 is positioned between a shoulder 42 in the spring recess 38 and a shoulder 44 formed at the upper end of the connect¬ ing shaft 24 with respect to Figure 1 where the connect¬ ing shaft contacts an activating knob 46. Consequently, the connecting shaft 24 is always biased in a direction upward toward the rotor lid 14.
Formed within the drive hub 16 is a locking cavity 48 having an enlarged upper recess 50 forming a shoulder 52. Positioned on the shoulder 52 is a retain¬ ing ring 54 having an internal opening 56 with a diameter approximately the same as the exterior diameter of. the connecting shaft 24. .The retaining ring 54 is held in place by a clip 58.
In Figure 2, the connecting shaft 24 is moved in a downward direction to move the flexible fingers 30 toward the recess 48 in the drive hub 16. Because the exterior diameter of the total of the anchoring collar sections 34 on the locking ends 32 of the flexible fing¬ ers 30 is greater than the interior diameter of the open- ing 56 of the retaining ring 54, the flexible fingers 30 will be compressed toward each other as shown in Figure 2. The tapered surfaces 60 on the locking ends 32 of the fingers 30 provide guidance through the opening 56. Once the anchoring ledges 36 of the anchoring collar sections 34 pass through the opening 56, they will move into en¬ gagement with the locking surface 62 of the retaining ring 54. The size of the drive hub recess 48 allows for the flexible fingers 30 to flex away from each other to their original relaxed position and secure the anchoring collar in a locked position with respect to the retaining 5 ring 54. As the rotor assembly is accelerated to high speed, the centrifugal loading on the fingers 30 tends to positively seat them out against the interior diameter 56 of the retaining ring 54. The biasing spring 40 in the rotor lid will provide an upward force on the connecting 0 shaft 24 to provide tight engagement between anchoring collars and the retaining ring. In this position, as shown in Figure 3, the connecting shaft 24 is in its locked position so that the rotor is secured to the drive hub 16. During the operation of the centrifuge, this 5 positive connection between the rotor and the drive hub will prevent any relative motion occurring between the drive hub and the rotor.
Once the centrifugation operation has been 0 completed and it is desired to remove the rotor from the centrifuge, it is necessary to unlock the connecting shaft 24 from the drive hub 16. In order to accomplish this process, the connecting shaft 24 is moved to a sec¬ ond downward position as shown in Figure 4 wherein the 5 tapered surfaces 60 on the locking ends 32 of the flexi¬ ble fingers 30 move into a stripping collar or sleeve 64 which is slidably positioned in the drive hub recess 48. The stripping sleeve 64 has an exterior diameter less than the interior diameter of the hub recess 48 so ° that the sleeve will freely slide within the recess 48 and, unless otherwise moved, will maintain a position at the bottom 66 of the recess 48. The stripping sleeve 64 has an interior opening 68 having a diameter which is approximately the same as the diameter of the connecting shaft 24 and the diameter of the opening 56 in the re¬ taining ring 54. Once the anchoring collar sections. 34 are received within the opening 68 in the stripping sleeve 64, the fingers 30 will be flexed toward each other. The stripping sleeve will contain the anchoring collars 34 in a position where their exterior dimension is approximately the same as the diameter of the connect¬ ing shaft 24. Movement of the anchoring collars into the stripping sleeve is accomplished by the operator exerting a downward force on the connecting shaft 24 against the force of the biasing spring 40.
When the collar sections 34 are in the strip¬ ping sleeve 64 and the operator's downward pressure on the connecting shaft 24 is released, the force of the biasing spring will move the locking ends of the flexible fingers 30 upward with the stripping sleeve 64. The outward pressure exerted by the anchoring collars 34 against the interior of the opening 68 in the stripping sleeve provides a gripping force on the sleeve to carry the sleeve with the connecting shaft in its upward trav¬ el.
Attention is directed to Figure 5 where the stripping s.leeve 64 has been moved up to a position in contact with the retaining ring 54. At this point, con¬ tinued upward movement of the connecting shaft 24 will allow the anchoring flanges to move into the opening 56 of the retaining ring 54. Because the stripping sleeve 64 has retained the flexed orientation of the flexible fingers 30 toward each other sufficiently enough so that the outside dimension of the total collar formed by the anchoring collar sections 34 is no larger than the open- ing 56 in the retaining ring 54, the anchoring collar sections will continue up through the retaining ring 54 under the upward biasing force of the spring 40. Once the anchoring collar sections 34 have cleared the in- terior opening 56 of the retaining ring 54, the connect- ing shaft and the flexible fingers 30 will assume the orientation as shown in Figure 1 wherein the rotor is in the unlocked position with respect to the drive hub 16. In this position the operator may then remove the rotor from the centrifuge.
The present invention is designed for ease of operation in both the locking and unlocking functions. Because the connecting shaft 24 is prebiased in an upward direction by the biasing spring 40, the only motion re¬ quired by the operator is a downward or pushing motion on the knob 46 of the connecting shaft. Indicator areas 70 and 72 in the form of indicia or colors adjacent the push knob 46 in Figure 1 will provide a visual indiction of the locked or unlocked position of the rotor on the drive hub. In other words, if both the indicator areas 70 and 72 are shown above the top 74 of the lid 14, the operator would know that the rotor is unlocked from the drive hub 16. However, as shown in Figure 3, when only the indica- tor area 70 is shown above the top 74 of the rotor lid, the operator would know that the rotor is locked onto the drive hub 16. The operator will know that when it is desirable to unlock the connector shaft from the drive hub 16, the connecting shaft 24 will be pushed downward to its lowest extreme wherein the lower ends of the flex¬ ible fingers will contact the bottom of the recess 66 and the drive hub 16. As shown in Figure 4, both .indicator areas 70 and 72 will be oriented generally below the top surface of the rotor lid. At this point, the operator simply releases his pressure on the connecting shaft 24 and the upward movement caused by the biasing spring 40 will unlock the connecting shaft from the drive hub.
In summary, downward movement of the connecting shaft 24 from the position in Figure 1 to a first posi¬ tion in Figure 3 will provide automatic locking of the rotor to the drive hub 16. Further, the downward move¬ ment of the connecting shaft to a second position, as shown in Figure 4, will provide for the automatic unlock¬ ing of the connecting shaft from the drive hub. The utilization of a simple one-finger vertical manipulation to control the locking and unlocking of the rotor from the centrifuge drive hub assembly utilizes few components to promote ease of manufacture.
Although the present invention is shown in the accompanying figures and described above as having a particular configuration, this configuration is for exem¬ plary purposes and it is envisioned that the present invention is applicable with respect to other configura- tions utilizing the principles shown in the present in¬ vention.
Figure imgf000011_0001

Claims

1. A centrifuge comprising a rotor chamber; a drive hub (16) projecting into the chamber; means (18) for driving the hub; a rotor (10) positioned on the hub; a connecting shaft (24) within the rotor and movable in
5 one direction to a first position and a second position; and an engaging member (54) within the hub to contact with one end of the connecting shaft, movement of the shaft to the first position locking the rotor on the hub, movement of the shaft to the second position unlocking 10 the rotor from the hub, the second position being farther from the rotor than .the first position.
2. A centrifuge as defined in claim 1, character¬ ized in that flexible fingers (30) are on the one end of the shaft.
3. A centrifuge as defined in claim 2 , character¬ ized in that anchoring collar sections (34) are on the flexible fingers.
4. A centrifuge as defined in claim 3, character¬ ized in that the engaging means has a holding surface (62) on which the anchoring collar sections contact when the shaft is in the first position to lock the rotor on
5 the hub.
5. A centrifuge as defined in claim 4, character¬ ized in that the hub has unlocking means (64) to discon¬ nect the connecting shaft when in the second position.
6. A centrifuge as defined in claim 5, character¬ ized in that the unlocking means comprises a sleeve, the flexible fingers being inserted in the sleeve when the shaft is in the second position, the flexible fingers
5 being biased toward each other when in the sleeve to allow movement of the anchoring collar sections in a* direction opposite the one direction past the holding surface.
7. A centrifuge as defined in claim 5, character¬ ized in that the unlocking means comprises a stripping sleeve (64) slidably mounted in the hub cavity, movement of the one end of the shaft away from the hub causing the anchoring collar with the stripping sleeve to move to a position adjacent the engaging means, the interior perim¬ eter of the sleeve being approximately the same perimeter as the interior perimeter of the engaging means so that the one end of the shaft can move above the engaging means and permit disengagement of the rotor from the hub.
8. A centrifuge as defined in claim 1, character¬ ized in that the connecting shaft comprises an elongate shaft, a portion (46) of the shaft extending above the top of the rotor, the shaft movable longitudinally toward and away from the drive hub in response to controlled movement of the portion of the shaft above the rotor.
9. A centrifuge as defined in claim 8, character¬ ized in that the shaft is biased in a first direction, movement of the shaft in a second direction opposite the first direction into contact with the engaging means preventing the shaft from moving in the first direction.
10. A centrifuge as defined in claim 1, character¬ ized in that the connecting shaft is movable in a path coincident with the spin axis of the rotor toward and away from the hub.
11. A centrifuge as defined in claim 3, character¬ ized in that the engaging means comprises a generally annular retaining ring (54) in the hub cavity for receipt of the anchoring collars of the fingers, the ring forming an interior perimeter smaller than the exterior perimeter defined by all of the anchoring collars of the fingers, the fingers flexing toward each other as the shaft moves between the first and second positions, the ring having a retaining shoulder for receipt of the anchoring collar to lock the connecting shaft and the rotor on the hub.
-
Figure imgf000014_0001
PCT/US1983/000319 1982-06-09 1983-03-07 Centrifuge/rotor attachment assembly WO1983004379A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38648582A 1982-06-09 1982-06-09
US386,485 1982-06-09

Publications (1)

Publication Number Publication Date
WO1983004379A1 true WO1983004379A1 (en) 1983-12-22

Family

ID=23525774

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1983/000319 WO1983004379A1 (en) 1982-06-09 1983-03-07 Centrifuge/rotor attachment assembly

Country Status (2)

Country Link
EP (1) EP0111492A1 (en)
WO (1) WO1983004379A1 (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0215561A2 (en) * 1985-08-08 1987-03-25 Tucker Fasteners Limited Two-part plastics clip
EP0228120A2 (en) * 1985-12-23 1987-07-08 INSTRUMENTATION LABORATORY S.r.l. Improved coupling between entraining hub and multi-cuvette rotor for analytical apparatus
US4776834A (en) * 1986-03-07 1988-10-11 Heraeus Sepatech Gmbh Centrifuge
US4782562A (en) * 1987-05-21 1988-11-08 Emhart Enterprises Corp. Two-part plastic clip
EP0322722A2 (en) * 1987-12-24 1989-07-05 WEBA Westerbarkey GmbH & Co. KG. Method and apparatus for forming lateral collars on sheet metal tubes
WO1995034382A1 (en) * 1994-06-15 1995-12-21 Massachusetts Institute Of Technology Locking centrifuge rotor cover assembly
EP0712667A1 (en) 1994-11-21 1996-05-22 JOUAN, Société Anonyme dite Centrifuge with dismountable rotor and a device for the axial locking of the rotor on the drive shaft
EP0911080A1 (en) * 1997-10-23 1999-04-28 Jouan Centrifuge with dismountable rotor and a device for the axial locking of the rotor on the drive shaft and rotor for such a centrifuge
EP1043071A1 (en) * 1999-04-09 2000-10-11 Jean-Denis Rochat Apparatus for centrifuging liquids and use of the apparatus
US7081081B2 (en) * 2002-04-22 2006-07-25 Kendro Laboratory Products, Lp Bayonet coupling mechanism for a centrifuge
GB2424607A (en) * 2005-03-29 2006-10-04 Kendro Lab Prod Gmbh Centrifuge lid engagement arrangement
WO2007134624A1 (en) * 2006-05-23 2007-11-29 Eppendorf Ag Lid for closing a centrifuge rotor
FR2951964A1 (en) * 2009-11-04 2011-05-06 Bms Internat CENTRIFUGE COMPRISING VISUAL AND / OR TOUCH-INDICATING MEANS FOR PROPERLY ASSEMBLING THE ROTOR ON THE DRIVE SHAFT, AND CORRESPONDING ROTOR
CN103481428A (en) * 2013-09-09 2014-01-01 湖南恒科新材料有限公司 Anti-lock device for centrifuge
US20140329658A1 (en) * 2013-05-02 2014-11-06 Afi Centrifuge Laboratory centrifuge comprising means for the locking in translation of a rotor on a driving motor shaft
WO2015007620A1 (en) * 2013-07-18 2015-01-22 Andreas Hettich Gmbh & Co. Kg Centrifuge
DE102014112501A1 (en) * 2014-08-29 2016-03-03 Andreas Hettich Gmbh & Co. Kg centrifuge
US20160107171A1 (en) * 2014-10-21 2016-04-21 Sigma Laborzentrifugen Gmbh Coupling Device for a Laboratory Centrifuge Actuated by Centrifugal Force
EP3132854A1 (en) * 2015-08-20 2017-02-22 Andreas Hettich GmbH & Co. KG Centrifuge rotor
US20170050195A1 (en) * 2015-08-20 2017-02-23 Andreas Hettich Gmbh & Co. Kg Centrifuge rotor
EP3669993A1 (en) * 2018-12-18 2020-06-24 Eppendorf AG Connection structure
EP3669992A1 (en) * 2018-12-18 2020-06-24 Eppendorf AG Connection structure
US11731144B2 (en) * 2017-12-20 2023-08-22 Eppendorf Se Centrifuge rotor with locking levers providing visual indication of cover closure

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1381805A (en) * 1919-12-09 1921-06-14 Courtaulds Ltd Spinning-box mounting
FR955180A (en) * 1950-01-10
FR1015447A (en) * 1947-12-12 1952-09-29 Skimmer refinements
US2739759A (en) * 1954-09-28 1956-03-27 Clay Adams Inc Centrifuge
US3019501A (en) * 1959-08-13 1962-02-06 Kirk Wing Company Fastener
US3165132A (en) * 1963-06-04 1965-01-12 Acme Mfg Co Inc Cutter drive for vegetable juicing machine
DE2722322A1 (en) * 1977-05-17 1978-11-30 Compur Electronic Gmbh DEVICE FOR SEPARATING AND MEASURING SAMPLE COMPONENTS

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR955180A (en) * 1950-01-10
US1381805A (en) * 1919-12-09 1921-06-14 Courtaulds Ltd Spinning-box mounting
FR1015447A (en) * 1947-12-12 1952-09-29 Skimmer refinements
US2739759A (en) * 1954-09-28 1956-03-27 Clay Adams Inc Centrifuge
US3019501A (en) * 1959-08-13 1962-02-06 Kirk Wing Company Fastener
US3165132A (en) * 1963-06-04 1965-01-12 Acme Mfg Co Inc Cutter drive for vegetable juicing machine
DE2722322A1 (en) * 1977-05-17 1978-11-30 Compur Electronic Gmbh DEVICE FOR SEPARATING AND MEASURING SAMPLE COMPONENTS

Cited By (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0215561A3 (en) * 1985-08-08 1988-01-13 Tucker Fasteners Limited Two-part plastics clip
EP0215561A2 (en) * 1985-08-08 1987-03-25 Tucker Fasteners Limited Two-part plastics clip
EP0228120A3 (en) * 1985-12-23 1989-10-25 Instrumentation Laboratory S.P.A. Improved coupling between entraining hub and multi-cuvette rotor for analytical apparatus
EP0228120A2 (en) * 1985-12-23 1987-07-08 INSTRUMENTATION LABORATORY S.r.l. Improved coupling between entraining hub and multi-cuvette rotor for analytical apparatus
US4776834A (en) * 1986-03-07 1988-10-11 Heraeus Sepatech Gmbh Centrifuge
US4782562A (en) * 1987-05-21 1988-11-08 Emhart Enterprises Corp. Two-part plastic clip
DE3744046A1 (en) * 1987-12-24 1989-07-06 Westaflexwerk Gmbh & Co Kg METHOD AND DEVICE FOR MOLDING TUBE TUBES
EP0322722A3 (en) * 1987-12-24 1990-09-19 Westaflexwerk Gmbh & Co. Kg Method and apparatus for forming lateral collars on sheet metal tubes
EP0322722A2 (en) * 1987-12-24 1989-07-05 WEBA Westerbarkey GmbH & Co. KG. Method and apparatus for forming lateral collars on sheet metal tubes
US6056684A (en) * 1994-06-15 2000-05-02 Massachusetts Institute Of Technology Locking centrifuge rotor cover assembly
WO1995034382A1 (en) * 1994-06-15 1995-12-21 Massachusetts Institute Of Technology Locking centrifuge rotor cover assembly
EP0712667A1 (en) 1994-11-21 1996-05-22 JOUAN, Société Anonyme dite Centrifuge with dismountable rotor and a device for the axial locking of the rotor on the drive shaft
FR2727037A1 (en) * 1994-11-21 1996-05-24 Jouan CENTRIFUGE WITH REMOVABLE ROTOR AND AXIAL LOCKING DEVICE OF THE ROTOR ON THE DRIVE SHAFT
US5681257A (en) * 1994-11-21 1997-10-28 Jouan Centrifuge with removable rotor and device for axial immobilization of the rotor on the drive shaft
FR2770154A1 (en) * 1997-10-23 1999-04-30 Jouan CENTRIFUGE WITH REMOVABLE ROTOR AND WITH AXIAL LOCKING DEVICE OF THE ROTOR ON A DRIVE HEAD, AND ROTOR FOR SUCH A CENTRIFUGE
EP0911080A1 (en) * 1997-10-23 1999-04-28 Jouan Centrifuge with dismountable rotor and a device for the axial locking of the rotor on the drive shaft and rotor for such a centrifuge
US6063018A (en) * 1997-10-23 2000-05-16 Jouan Centrifuge having force responsive locking device for securing a rotor to a drive head
EP1043071A1 (en) * 1999-04-09 2000-10-11 Jean-Denis Rochat Apparatus for centrifuging liquids and use of the apparatus
WO2000061294A1 (en) * 1999-04-09 2000-10-19 Haemonetics Corporation Liquid centrifuging apparatus and use of same
US6709377B1 (en) 1999-04-09 2004-03-23 Haemonetics Corporation System and method for quick disconnect centrifuge unit
US7081081B2 (en) * 2002-04-22 2006-07-25 Kendro Laboratory Products, Lp Bayonet coupling mechanism for a centrifuge
GB2424607A (en) * 2005-03-29 2006-10-04 Kendro Lab Prod Gmbh Centrifuge lid engagement arrangement
GB2424607B (en) * 2005-03-29 2008-12-17 Kendro Lab Prod Gmbh Fixing device for a centrifuge rotor cover
WO2007134624A1 (en) * 2006-05-23 2007-11-29 Eppendorf Ag Lid for closing a centrifuge rotor
US9149815B2 (en) 2006-05-23 2015-10-06 Eppendorf Ag Lid for closing a centrifuge rotor
FR2951964A1 (en) * 2009-11-04 2011-05-06 Bms Internat CENTRIFUGE COMPRISING VISUAL AND / OR TOUCH-INDICATING MEANS FOR PROPERLY ASSEMBLING THE ROTOR ON THE DRIVE SHAFT, AND CORRESPONDING ROTOR
WO2011054906A1 (en) * 2009-11-04 2011-05-12 Awel International Centrifuge including visual and/or tactile means indicating the proper mounting of the rotor on the drive shaft, and the corresponding rotor
US9539588B2 (en) * 2013-05-02 2017-01-10 Afi Centrifuge Laboratory centrifuge with locking system for locking in translation of rotor on driving motor shaft
US20140329658A1 (en) * 2013-05-02 2014-11-06 Afi Centrifuge Laboratory centrifuge comprising means for the locking in translation of a rotor on a driving motor shaft
WO2015007620A1 (en) * 2013-07-18 2015-01-22 Andreas Hettich Gmbh & Co. Kg Centrifuge
US10300499B2 (en) 2013-07-18 2019-05-28 Andreas Hettich Gmbh & Co. Kg Centrifuge with removable rotor
CN103481428A (en) * 2013-09-09 2014-01-01 湖南恒科新材料有限公司 Anti-lock device for centrifuge
CN103481428B (en) * 2013-09-09 2015-08-05 湖南恒科新材料有限公司 A kind of Anti-lock device for centrifuge
US20170252754A1 (en) * 2014-08-29 2017-09-07 Andreas Hettich Gmbh & Co. Kg Quick closure for a centrifuge
DE102014112501A1 (en) * 2014-08-29 2016-03-03 Andreas Hettich Gmbh & Co. Kg centrifuge
US10632475B2 (en) * 2014-08-29 2020-04-28 Andreas Hettich Gmbh & Co. Kg Centrifuge with quick action closure securing the rotor to the drive shaft
DE102014112501B4 (en) * 2014-08-29 2017-07-27 Andreas Hettich Gmbh & Co. Kg centrifuge
US20160107171A1 (en) * 2014-10-21 2016-04-21 Sigma Laborzentrifugen Gmbh Coupling Device for a Laboratory Centrifuge Actuated by Centrifugal Force
US9782783B2 (en) * 2014-10-21 2017-10-10 Sigma Laborzentrifugen Gmbh Coupling device for a laboratory centrifuge actuated by centrifugal force
CN106902995B (en) * 2015-08-20 2019-05-31 安德烈斯黑蒂希股份有限公司 Centrifuge rotor
CN106902995A (en) * 2015-08-20 2017-06-30 安德烈斯黑蒂希股份有限公司 Centrifuge rotor
US20170050194A1 (en) * 2015-08-20 2017-02-23 Andreas Hettich Gmbh & Co. Kg Centrifuge rotor
US20170050195A1 (en) * 2015-08-20 2017-02-23 Andreas Hettich Gmbh & Co. Kg Centrifuge rotor
US10486170B2 (en) * 2015-08-20 2019-11-26 Andreas Hettich Gmbh & Co. Kg Centrifuge rotor mounted on drive shaft
US10493469B2 (en) 2015-08-20 2019-12-03 Andreas Hettich Gmbh & Co. Kg. Centrifuge rotor with lid locking mechanism
EP3132854A1 (en) * 2015-08-20 2017-02-22 Andreas Hettich GmbH & Co. KG Centrifuge rotor
US11731144B2 (en) * 2017-12-20 2023-08-22 Eppendorf Se Centrifuge rotor with locking levers providing visual indication of cover closure
WO2020127104A1 (en) * 2018-12-18 2020-06-25 Eppendorf Ag Connection construction
EP3669992A1 (en) * 2018-12-18 2020-06-24 Eppendorf AG Connection structure
WO2020127121A1 (en) * 2018-12-18 2020-06-25 Eppendorf Ag Connection construction
CN113412160A (en) * 2018-12-18 2021-09-17 埃佩多夫股份公司 Connection structure
CN113412159A (en) * 2018-12-18 2021-09-17 埃佩多夫股份公司 Connection structure
JP2022514582A (en) * 2018-12-18 2022-02-14 エッペンドルフ エスイー Connection structure
JP2022514749A (en) * 2018-12-18 2022-02-15 エッペンドルフ エスイー Connection structure
EP3669993A1 (en) * 2018-12-18 2020-06-24 Eppendorf AG Connection structure
CN113412159B (en) * 2018-12-18 2023-09-05 埃佩多夫欧洲股份公司 connection structure

Also Published As

Publication number Publication date
EP0111492A1 (en) 1984-06-27

Similar Documents

Publication Publication Date Title
WO1983004379A1 (en) Centrifuge/rotor attachment assembly
US4753631A (en) Speed limiting arrangement for a centrifuge rotor having an axial mounting bolt
US10632475B2 (en) Centrifuge with quick action closure securing the rotor to the drive shaft
US5362293A (en) Drive clutch for a centrifuge rotor
US10300499B2 (en) Centrifuge with removable rotor
US7464450B2 (en) Attachment and release apparatus and method
JP5265329B2 (en) Centrifuge rotor lock device, rotor lock mechanism, and rotor assembly
US20040018928A1 (en) Easy access cover
US4283158A (en) Coupling device
US5658231A (en) Mechanism for securing a separation bowl to a mechanical chuck
EP0929363A1 (en) Umbilicus gimbal with bearing retainer
US7137198B2 (en) Cover attachment method
EP0480866A2 (en) Panel fastener having internal threads and having maximum retaining ring retention capability
SE513562C2 (en) Device for shaft with spherical grip part having friction raising means
US5275376A (en) Spring retainer
US5337386A (en) Single channel snap-lock fiber optic connector
CN113412159B (en) connection structure
CN113412160A (en) Connection structure
JPH0629621B2 (en) Clutch bearing device
SE462554B (en) SPINDLE DEVICE FOR TOOL
US5562583A (en) Tube adapter for centrifuge shell type rotor
SE453216B (en) COUPLING
SE524921C2 (en) Impeller arrangement, for centrifugal rotor rotatable around rotation axis, has several impellers in central space for impelling incoming fluid into rotation of centrifugal rotor
US5832711A (en) Open-end spinning rotor
EP0097276A2 (en) Mechanism for latching an axially displaceable rotary part to a concentric rotary part

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): JP

AL Designated countries for regional patents

Designated state(s): CH DE GB