US3322338A - Centrifuge stabilizing assembly with heat probe - Google Patents

Centrifuge stabilizing assembly with heat probe Download PDF

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Publication number
US3322338A
US3322338A US273166A US27316663A US3322338A US 3322338 A US3322338 A US 3322338A US 273166 A US273166 A US 273166A US 27316663 A US27316663 A US 27316663A US 3322338 A US3322338 A US 3322338A
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US
United States
Prior art keywords
rotor
rotation
axis
sleeve
bearing assembly
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.)
Expired - Lifetime
Application number
US273166A
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English (en)
Inventor
Richard C Stallman
James F Woodall
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.)
Beckman Coulter Inc
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
Priority to US273166A priority Critical patent/US3322338A/en
Priority to GB15239/64A priority patent/GB1055768A/en
Priority to CH470364A priority patent/CH409789A/de
Priority to FR970907A priority patent/FR1392896A/fr
Priority to SE4644/64A priority patent/SE300792B/xx
Priority to DEB76347A priority patent/DE1241645B/de
Application granted granted Critical
Publication of US3322338A publication Critical patent/US3322338A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B04B9/12—Suspending rotary bowls ; Bearings; Packings for bearings
    • 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
    • B04B9/14—Balancing rotary bowls ; Schrappers
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/066—Ball or roller bearings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/12—Gyroscopes
    • Y10T74/1204—Gyroscopes with caging or parking means

Definitions

  • a rotor of relatively large size is supported for rotation upon a small diameter somewhat flexible spindle.
  • the spindle is driven at high speed.
  • the small diameter spindle permits the true center of gravity of the combined mass of the rotor and fluid contents to become the axis of rotation. While every effort is made in the manufacture of rotors of this kind to have the UIHB center of gravity of the mass coincide precisely with the geometric center of gravity, there usually will be a slight lateral displacement between the two, particularly when loaded with fluid to be centrifuged.
  • rotors of the above type are oftentimes operated at controlled temperatures which must be precisely measured.
  • an upstanding cylindrical sleeve open at the top is provided and carried coaxially of the rotor.
  • the inside of the sleeve is blackened to provide a black body surface.
  • a temperature transducer is disposed to extend downwardly into the sleeve and provided with a black body radiation shield therearound in order to form a radiation closure to the upper end of the sleeve.
  • the upwardly extending sleeve has been necessarily of substantial diameter in order to accommodate the above noted wobbling action of the rotor.
  • a more particular object of the present invention is to provide an improved stabilizing assembly including a physically protected temperature transducer.
  • FIGURE 1 is an elevation view of :a portion of a centrifuge apparatus embodying the present invention
  • FIGURE 2 is a plan view of a portion of FIGURE 1, taken along the line 2-2;
  • FIGURE 3 is an elevation view of FIGURE 2 taken along the line 3-3.
  • centrifuge apparatus including an outer frame 11 which encloses the drive means and rotor housing.
  • the top of frame 11 is provided with an opening 12 through which a rotor 13 may be passed for mounting Within a rotor chamber 17 on a relatively small diameter drive shaft or spindle 14-, as will be presently described.
  • a cylindrical sleeve 15 is formed to provide a convenient handle for manipulating the rotor.
  • the interior of sleeve 15 is coated as a black body.
  • the side walls of rotor chamber 17 include a cylindrical steel member 21 which acts as a guard should the rotor explode under the strain created by the relatively high rotational velocity at which it is operated.
  • the lower end of member 21 receives the bottom wall 22, likewise made of relatively strong material.
  • a liner 23 is mounted inside the chamber 17 proximate the interior surface of the member 21.
  • the interior of chamber 17 is provided with refrigeration means including evaporator coils (not shown) surrounding the liner 23 which serve to control the chamber temperature.
  • spindle 14!- is made of resilient material and extends downwardly with its lower end journaled in an oil filled bearing assembly 26.
  • Bearing assembly 26 is supported by spaced brackets 27 extending downwardly from a resiliently mounted base 28.
  • Base 23 may be supported .from a fixed member 36 by springs 37.
  • a driven pulley 31 is carried by spindle 14 and can be driven by a belt 32 from a drive pulley 33 and motor 34, or can be directly driven by the motor through suitable gearing.
  • Opening 12 is closed by a sliding door 16 supported by rollers carried to move in tracks or ways It).
  • rotor means 13 includes a relatively large conical bowl portion 41 including a well 46 adapted to receive the upper end of spindle 14
  • Spaced pins 47, 48 are adapted to engage accommodating holes formed in the upper ends of spindle 14 to provide a drive connection between spindle M and the bottom of bowl 41.
  • apparatus for stabilizing the rotor about its axis of rotation through low speeds and for limiting and damping lateral movement thereof with respect to frame 11.
  • the apparatus comprises generally a movable bearing assembly carried by the frame, wherein a rotatable member is supported substantially coaxially of the axis of rotation of the rotor.
  • the rotatable member is formed and adapted to releasably engage the rotor in order to hold same for rotation therewith substantially about the axis of rotation.
  • Means are provided for supporting the rotatable member to move with yielding resistance within predetermined limits laterally of the axis of rotation to permit the rotor to operate about its true axis of rotation through the center of gravity of the combined mass of the rotor and contents and to damp lateral movement of the rotor during critical transition speeds.
  • the rotatable member is movable between advanced and retracted positions to engage and release the rotor and means are provided to automatically respond to transition of the rotor from a given speed range to another to move the rotatable member between these positions.
  • a temperature transducer is carried by the bearing assembly to extend into and in radiation coupled relation with a sleeve on the rotor.
  • the rotatable member is disposed with respect to the transducer to protect the latter from contact with the sleeve of the rotor during lateral damping movements thereof.
  • the stabilizing assembly is hingedly mounted to be swung over to extend across opening 12. It can also be moved vertically into and out of chamber 17.
  • the stabilizing assembly is supported with respect to the frame by means of a pair of brackets 18 and a third bracket 19, as will be further described below.
  • a support assembly 20 includes a Y-shaped bridge member 24 adapted to extend across opening 12 and to have a generally flat upper surface 25.
  • the two arms of the Y each carry a fixed, pointed support pin 29 whereas the stern of the Y carries an adjustable pointed pin 30.
  • Pins 29, 30 are adapted to be received by detents formed in brackets 18, 19, respectively.
  • several detents are formed in each of brackets 18, 19.
  • pins 29 are inserted in detents of brackets 18 at a selected level and pin 30 adjusted outwardly into a detent on a corresponding level.
  • a liquid level 38 is carried in the upper face of member 24. Therefore, if the bubble in level 38 is not centrally located the operator of the equipment is immediately apprised of the fact that he has mounted member 24 improperly in the apparatus.
  • Means for pivoting member 24 into and out of opening 12 includes pivot pin 39 carried in bracket 19, and a pair of pivot arms 42 carried at one end therefrom.
  • the other ends of arms 42 are slotted to receive pin 43 carried in member 24.
  • the slotted ends of arms 42 permit member 24 a relatively limited transverse freedom of movement until rigidly secured by means of pins 29, 31
  • a bearing assembly 58 depends downwardly from member 24.
  • Assembly 50 includes a depending stabilizing member 51 rotatable substantially coaxially of the geometric axis of rotation of the rotor, and is formed and adapted with an inverted conical exterior surface 52 to releasably, engage sleeve 15 at the upper edge thereof.
  • Member 51 holds the rotor for rotation therewith in general about its geometric axis of rotation, at least as the rotor is started up.
  • Means are provided, however, for supporting member 51 to move with yielding resistance laterally within predetermined limits, to permit the axis of rotation of member 51 to move in an orbit (i.e. revolve) about the true axis of rotation through the center of gravity of the mass of the rotor and its contents thereby damping lateral movement of the rotor during critical transition speeds.
  • member 51 is carried by the inner race of a ball bearing 53 and locked in place between a snap ring 54 and a shoulder 40.
  • the outer race of ball bearing 53 is similarly carried by an annular bearing housing 55 preferably of a plastic material not requiring fluid lubrication, such as the acetal resin material sold under the trademark Delrin manufactured by E. I. Du Pont de Nernours & Co.
  • This material is characterized by the radical z)nl Housing 55 is carried within and laterally spaced from a stabilizer housing 56 and can move laterally thereof.
  • a well 57 of limited axial extent is drilled into the upper surface of housing 55, and disposed to receive registration pin 58 carried by housing 56, so as to prevent relative rotation between housings 55, 56.
  • Bearing assembly 50 is arranged whereby member 51 is movable between advanced and retracted positions to engage and release sleeve 15.
  • member 51 is carried in stabilizer housing 56.
  • Housing 56 includes a sleeve portion 59 extending upwardly and slidably supported on a cylindrical stud-like guide member 61.
  • Member 51 is fixed to bridge member 24 by a flanged portion 62 screwed to same.
  • the end of member 61 is formed with an inverted conical surface 63 adapted to receive a generally similar surface at the upper end of member 51.
  • Housing 56 is yieldingly urged to move member 51 to rotor engaging position by means of a helical spring 64 interposed between flange 26 and the upper surface of housing 56.
  • the upper surface of housing 55 and undersurface of housing 56 are frictionally engaged after member 51 is received by sleeve 15. Suitable compressive force is thereby applied by spring 64 to provide damping as a function of the loading of the engaged surfaces of housings 55, 56.
  • a temperature transducer is carried by hearing assembly 58 to extend into sleeve 15 and is radiometrically coupled with the black body interior surface of the sleeve.
  • Member 51 is disposed with respect to the temperature transducer to protect the latter from contact with sleeve 15 during lateral movement thereof, as during damping of the rotor.
  • a thermistor bead 65 connected by suitable leads is mounted in a transducer holder 66 to extend coaxially through guide member 61 and member 51. Holder 66 rests on a shoulder formed in guide member 61.
  • a cylindrically-shaped blackened guard ring 67 is fastened to the bottom of housing 56.
  • a retaining ring 68 is interposed between ring 67 and housing 56 to retain housing 55.
  • a radiation shield 69 of generally circular construction is carried by posts 71 depending downwardly from member 24. The lower surface of shield 69 is also blackened.
  • Means serving to move rotatable member 51 of bearing assembly 50 between advanced and retracted positions includes a pair of arms 72 each pivoted at 73 and being formed at their opposite ends with relatively large square holes 74 adapted to receive trunnions 75 carried on each side of housing 56. Trunnions 75 are, therefore, free to move laterally and vertically to a limited degree within holes 74. Furthermore, it should be noted that housing 56 is also free to rotate slightly by virtue of the limited clearance provided by holes 74. Arms 72 are yieldingly urged upwardly by a lift spring 76 disposed to extend between arms 72 and a member fixed with respect to bridge member 24. As shown spring 76 is in its extended position.
  • Means for moving arms 72 upwardly include a solenoid 77 provided with an armature 78 spring loaded to the right, as shown in the drawings.
  • the end of armature 78 carries a transverse rod or clevis pin 79.
  • the ends of clevis pin 79 are each coupled by links 81 to a pair of links 82, 83 whereby leftward movement of armature 78 serves to extend the over-all length of links 82, 83 to drive arms 72 downwardly to the position shown.
  • relaxation, or de-energization of solenoid 77 serves to spring urge armature 78 to the right thereby shortening the over-all length of links 82, 83 whereby arms 72 are raised.
  • arms 72 and member 51 are movable between advanced and retracted positions depending upon energization of solenoid 77.
  • solenoid 77 Electrical leads for solenoid 77 are brought out beneath member 24 and along one of the pviot arms 42 to a wiring connector plug 84 which in turn makes connection with electrical leads carried by frame 11.
  • Means serving to energize solenoid 77 below a predetermined speed of rotation and responsive to rotation of rotor 13 above the predetermined speed to move member 51 between advanced and retracted positions further includes the circuitry generally shown schematically in FIG- URE 1.
  • a speed transducer 86 is disposed to detect the rotational speed of spindle 14.
  • Transducer 86 feeds a signal to speed control circuit 87.
  • Speed control circuit 87 includes a relay 88 connected to be energized whenever the speed of rotation of spindle 14 is above a predetermined velocity.
  • Relay 88 is connected to operate the coil of solenoid 77 whereby energization of relay 88 serves to deenergize solenoid 77.
  • Suitable means for providing the foregoing function can include the speed control circuit of a model L-2 centrifuge apparatus as manufactured by Spinco Division of Beckman Instruments Corporation, Fullerton, Calif.
  • a voltage generator responsive to rotational speed of spindle 14 can be suitably arranged whereby at a predetermined speed sufiicient voltage is generated to energize relay 88 thereby opening the circuit of solenoid 77.
  • rotor 13 commences to slow down. As it passes a transition speed of rotation wherein wobbling might be expected (as is shown), solenoid 77 is again energized and armature 78 moved leftwardly to extend the over-all length of links 82, 83 to carry arms 72 downwardly driving housing 56 and member 51 into engagement with sleeve 15. Engagement between member 51 and sleeve 15 serves to damp wobbling of the rotor 13 and thereby prevent re-mixing of the centrifugate separated by the centrifuging operation.
  • An apparatus including a bearing assembly, for
  • said apparatus comprising a member, rototably mounted in said bearing assembly, for engaging said rotor whereby said rotor is held for rotation about said true aXis of rotation, said member having an axis substantially coincident with said true axis of rotation;
  • an upwardly extending sleeve is mounted on said rotor and coaxially thereof for frictionally receiving said member.
  • a temperature transducer extending downwardly into said sleeve, is carried by said bearing assembly.
  • An apparatus as defined in claim 1 which includes means for substantially aligning said axis of said member with said axis of rotation prior to engagement of said rotor by said member.
  • An apparatus for stabilizing a centrifuge rotor about a true axis of rotation during operation within a predetermined speed range said rotor being mounted for rotation in a housing, said apparatus comprising an upwardly extending cylindrical sleeve mounted on said rotor, said sleeve being disposed coaxially of said rotor and having an inner blackened surface;
  • a temperature transducer disposed substantially centrally inside said sleeve, said transducer being smaller than the inside diameter of said sleeve;
  • thermoelectric holder connected to said bearing assembly, said temperature transducer being attached to said holder, said member being disposed about said holder whereby said temperature transducer is protected from contact with said sleeve.
  • said means for moving said member into and out of engagement with said rotor sleeve includes a springloaded solenoid actuator having an armature connected to said member whereby said member is moved into said engagement when said solenoid actuator is energized and out of engagement when said solenoid actuator is deenergized.
  • An apparatus for stabilizing a centrifuge rotor, with respect to a frame supporting said rotor, about the axis of rotation of said rotor through low speed ranges said stabilizing apparatus comprising a bearing assembly carried by said frame;
  • said rotation-responsive means includes a solenoid actuator having an armature connected to said rotorengaging means whereby said rotor is engaged when said solenoid actuator is energized.
  • An apparatus for stabilizing a centrifuge rotor about an axis of rotation extending through the center of gravity of the combined mass of the rotor and the contents thereof during low speeds and for damping lateral movement of the rotor with respect to a rotor-supporting frame said apparatus comprising a bearing assembly carried by said frame;
  • a rotor-engaging member for stabilizing rotation of said rotor about said axis of rotation, said member being rotatably mounted on said bearing assembly substantially coaxially of said axis of rotation;
  • damping means mounted in said bearing assembly for carrying said member and restricting lateral movement of said member within predetermined limits of said axis of rotation, said damping means including a pair of elements having substantially coplanar surfaces, said pair of elements moving relative to each other during lateral movement of said rotor with respect to said axis of rotation; and 7 means connected to one of said elements for yieldingly urging said surfaces into frictional engagement whereby said lateral movement of said rotor is damped.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Centrifugal Separators (AREA)
US273166A 1963-04-15 1963-04-15 Centrifuge stabilizing assembly with heat probe Expired - Lifetime US3322338A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US273166A US3322338A (en) 1963-04-15 1963-04-15 Centrifuge stabilizing assembly with heat probe
GB15239/64A GB1055768A (en) 1963-04-15 1964-04-13 Centrifuge stabilizing assembly
CH470364A CH409789A (de) 1963-04-15 1964-04-13 Einrichtung zur Stabilisierung eines Zentrifugenrotors
FR970907A FR1392896A (fr) 1963-04-15 1964-04-14 Dispositif pour stabiliser un appareil centrifuge
SE4644/64A SE300792B (de) 1963-04-15 1964-04-15
DEB76347A DE1241645B (de) 1963-04-15 1964-04-15 Einrichtung zum Stabilisieren eines Zentrifugenrotors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US273166A US3322338A (en) 1963-04-15 1963-04-15 Centrifuge stabilizing assembly with heat probe

Publications (1)

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US3322338A true US3322338A (en) 1967-05-30

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US273166A Expired - Lifetime US3322338A (en) 1963-04-15 1963-04-15 Centrifuge stabilizing assembly with heat probe

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US (1) US3322338A (de)
CH (1) CH409789A (de)
DE (1) DE1241645B (de)
GB (1) GB1055768A (de)
SE (1) SE300792B (de)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430852A (en) * 1967-06-08 1969-03-04 Beckman Instruments Inc Rotor stabilizer
US3863049A (en) * 1972-05-31 1975-01-28 Union Carbide Corp Temperature control apparatus for a centrifugal-type chemistry analyzer
US3916152A (en) * 1972-05-31 1975-10-28 Union Carbide Corp Temperature control system for a centrifugal-type chemistry analyzer
US3958753A (en) * 1975-04-11 1976-05-25 Beckman Instruments, Inc. Air driven centrifuge
US4568324A (en) * 1984-11-09 1986-02-04 E. I. Du Pont De Nemours And Company Rotor shaft having damper member mounted thereon
US4687463A (en) * 1985-07-01 1987-08-18 Cogema Centrifugal decanter of the pendulous type
US4846773A (en) * 1985-05-13 1989-07-11 Beckman Instruments, Inc. Rotating system critical speed whirl damper
DE3925117A1 (de) * 1988-07-29 1990-02-01 Hitachi Koki Kk Zentrifuge
US5026341A (en) * 1987-05-22 1991-06-25 Robert Giebeler Low speed disengageable damper
US5827168A (en) * 1996-04-30 1998-10-27 Dade Behring Inc. Apparatus for stabilizing a centrifuge rotor
US5855545A (en) * 1996-09-24 1999-01-05 Beckman Coulter, Inc. Centrifuge containment system
US6354988B1 (en) * 1999-06-17 2002-03-12 Kendro Laboratory Products, Llp Centrifuge gyro diaphragm capable of maintaining motor shaft concentricity
WO2004012868A1 (en) * 2002-08-02 2004-02-12 Harvest Technologies Corporation Decanting centrifuge with vibration isolation
US20130190161A1 (en) * 2012-01-25 2013-07-25 BioNex Solutions, Inc. Vibration Response and Tuning of a Center of Mass/Gravity of a Centrifuge
CN107115978A (zh) * 2017-06-30 2017-09-01 陈伟景 一种防震效果好的教学实验用离心机
US10471299B2 (en) 2016-07-01 2019-11-12 Icon Health & Fitness, Inc. Systems and methods for cooling internal exercise equipment components
CN112452562A (zh) * 2020-12-03 2021-03-09 江苏中慧元通生物科技有限公司 一种用于疫苗毒株采收的鸡胚全液提取装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1657276B1 (de) * 1968-03-01 1971-07-08 Heraeus Christ Gmbh Daempfungseinrichtung fuer einen zentrifugenrotor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB148309A (en) * 1915-11-18 1921-06-02 Krupp Ag Apparatus for supporting the rotor of a vertical gyroscope when the gyroscope is not in use
US1955746A (en) * 1928-08-13 1934-04-24 Henry B Inglis Level indicator
US1968692A (en) * 1931-06-18 1934-07-31 Krauss Friedrich Emil Centrifugal machine
GB777973A (en) * 1954-10-29 1957-07-03 Smith & Sons Ltd S Improvements in or relating to gyroscope caging devices
US2878992A (en) * 1956-12-28 1959-03-24 Beckman Instruments Inc Centrifuge apparatus and rotor therefor
US2885188A (en) * 1956-03-14 1959-05-05 Beckman Instruments Inc Centrifuge apparatus
US3246688A (en) * 1962-06-28 1966-04-19 Beckman Instruments Inc Controlled temperature apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB148309A (en) * 1915-11-18 1921-06-02 Krupp Ag Apparatus for supporting the rotor of a vertical gyroscope when the gyroscope is not in use
US1955746A (en) * 1928-08-13 1934-04-24 Henry B Inglis Level indicator
US1968692A (en) * 1931-06-18 1934-07-31 Krauss Friedrich Emil Centrifugal machine
GB777973A (en) * 1954-10-29 1957-07-03 Smith & Sons Ltd S Improvements in or relating to gyroscope caging devices
US2885188A (en) * 1956-03-14 1959-05-05 Beckman Instruments Inc Centrifuge apparatus
US2878992A (en) * 1956-12-28 1959-03-24 Beckman Instruments Inc Centrifuge apparatus and rotor therefor
US3246688A (en) * 1962-06-28 1966-04-19 Beckman Instruments Inc Controlled temperature apparatus

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430852A (en) * 1967-06-08 1969-03-04 Beckman Instruments Inc Rotor stabilizer
US3863049A (en) * 1972-05-31 1975-01-28 Union Carbide Corp Temperature control apparatus for a centrifugal-type chemistry analyzer
US3916152A (en) * 1972-05-31 1975-10-28 Union Carbide Corp Temperature control system for a centrifugal-type chemistry analyzer
US3958753A (en) * 1975-04-11 1976-05-25 Beckman Instruments, Inc. Air driven centrifuge
DE2612140A1 (de) * 1975-04-11 1976-10-21 Beckman Instruments Inc Zentrifuge
US4568324A (en) * 1984-11-09 1986-02-04 E. I. Du Pont De Nemours And Company Rotor shaft having damper member mounted thereon
US4846773A (en) * 1985-05-13 1989-07-11 Beckman Instruments, Inc. Rotating system critical speed whirl damper
US4687463A (en) * 1985-07-01 1987-08-18 Cogema Centrifugal decanter of the pendulous type
US5026341A (en) * 1987-05-22 1991-06-25 Robert Giebeler Low speed disengageable damper
DE3925117A1 (de) * 1988-07-29 1990-02-01 Hitachi Koki Kk Zentrifuge
US5004453A (en) * 1988-07-29 1991-04-02 Hitachi Koko Company, Limited Centrifuge
US5827168A (en) * 1996-04-30 1998-10-27 Dade Behring Inc. Apparatus for stabilizing a centrifuge rotor
US5921148A (en) * 1996-04-30 1999-07-13 Dade Behring Inc. Method for stabilizing a centrifuge rotor
US5855545A (en) * 1996-09-24 1999-01-05 Beckman Coulter, Inc. Centrifuge containment system
US6354988B1 (en) * 1999-06-17 2002-03-12 Kendro Laboratory Products, Llp Centrifuge gyro diaphragm capable of maintaining motor shaft concentricity
US6638203B2 (en) * 1999-06-17 2003-10-28 Kendro Laboratory Products, Lp Centrifuge rotor shaft vertical displacement restriction device with angular deflection capability
US8152708B2 (en) 2002-08-02 2012-04-10 Harvest Technologies Corporation Decanting centrifuge with sliding engagement between decant ring and processing unit
US20040071569A1 (en) * 2002-08-02 2004-04-15 Ellsworth James R. Decanting centrifuge with vibration isolation
US20070142196A1 (en) * 2002-08-02 2007-06-21 Ellsworth James R Decanting centrifuge with vibration isolation
US7699766B2 (en) * 2002-08-02 2010-04-20 Harvest Technologies Corporation Decanting centrifuge with vibration isolation
US20110160031A1 (en) * 2002-08-02 2011-06-30 Harvest Technologies Corporation Decanting centrifuge with vibration isolation
WO2004012868A1 (en) * 2002-08-02 2004-02-12 Harvest Technologies Corporation Decanting centrifuge with vibration isolation
US20130190161A1 (en) * 2012-01-25 2013-07-25 BioNex Solutions, Inc. Vibration Response and Tuning of a Center of Mass/Gravity of a Centrifuge
US9446417B2 (en) * 2012-01-25 2016-09-20 BioNex Solutions, Inc. Vibration response and tuning of a center of mass/gravity of a centrifuge
US10471299B2 (en) 2016-07-01 2019-11-12 Icon Health & Fitness, Inc. Systems and methods for cooling internal exercise equipment components
CN107115978A (zh) * 2017-06-30 2017-09-01 陈伟景 一种防震效果好的教学实验用离心机
CN107115978B (zh) * 2017-06-30 2019-08-02 陈伟景 一种防震效果好的教学实验用离心机
CN112452562A (zh) * 2020-12-03 2021-03-09 江苏中慧元通生物科技有限公司 一种用于疫苗毒株采收的鸡胚全液提取装置

Also Published As

Publication number Publication date
SE300792B (de) 1968-05-06
DE1241645B (de) 1967-06-01
GB1055768A (en) 1967-01-18
CH409789A (de) 1966-03-15

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