EP0962249A1 - Agitateur à entraínement magnétique - Google Patents
Agitateur à entraínement magnétique Download PDFInfo
- Publication number
- EP0962249A1 EP0962249A1 EP99420128A EP99420128A EP0962249A1 EP 0962249 A1 EP0962249 A1 EP 0962249A1 EP 99420128 A EP99420128 A EP 99420128A EP 99420128 A EP99420128 A EP 99420128A EP 0962249 A1 EP0962249 A1 EP 0962249A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- propeller
- coupling means
- cell
- rotation
- magnetic
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/45—Magnetic mixers; Mixers with magnetically driven stirrers
- B01F33/453—Magnetic mixers; Mixers with magnetically driven stirrers using supported or suspended stirring elements
- B01F33/4535—Magnetic mixers; Mixers with magnetically driven stirrers using supported or suspended stirring elements using a stud for supporting the stirring element
Definitions
- the invention relates to a stirrer with magnetic drive.
- Agitators are conventionally used for brewing a mixture located inside a container to avoid decantation or any other alteration of the mixture during time.
- the advantage of a stirrer with magnetic drive that the setting in motion of the propeller which it comprises is realized by a magnetic coupling which takes place without contact between two rotating parts, such as the shaft of output of an electric motor and the associated propeller. This allows this tree to be placed outside the container while the propeller is installed inside the container. Any danger of leakage from the agitator can thus be dismissed. This is particularly useful when the mixture is toxic or when a pollution of it by agents exteriors should be avoided, as, for example, in the case of a drug composition.
- the invention relates to a stirrer with magnetic drive for a mixture located in a container, this agitator being supported by a flange, mounted tightly in a wall of the container and provided with a blind sleeve inside which is housed a drive shaft provided with a first magnetic coupling means, then that a propeller arranged around this sleeve is provided with a second magnetic coupling means able to cooperate with the first magnetic coupling means for driving the propeller around an axis of rotation.
- This agitator is characterized in that the propeller is integral with a third magnetic coupling means, placed opposite a cell detection of the passage of the third coupling means, this cell being carried by the flange.
- the cooperation of the third means of magnetic and cell coupling can detect the effective rotational movements of the propeller and, conversely, an absence of the propeller or its blocking.
- the cell As the cell is carried by the flange, it can be pre-mounted on it before placing the flange in the corresponding hole of the container, so that the positioning of the propeller by report to the cell can be fine tuned, in optimal conditions for an operator. No additional drilling is only necessary for the installation of the cell detection, which is a safety factor for sealing of the container.
- the invention goes against a common prejudice in the field of magnetic stirrers where the intensity of the magnetic field used for the rotational drive of the helix, i.e. the intense magnetic field prevailing between the first and second magnetic coupling means, would be likely to disturb the measurements carried out thanks to a magnetic field in the vicinity of these coupling means.
- the field magnetic reigning between the first and second means of magnetic coupling is closed at these means, so that it does not disturb the coupling made between the third magnetic coupling means and the detection cell, and this, including in the case where this third coupling means is disposed in close proximity to the first and second means of coupling.
- the third magnetic coupling means comprises at least one permanent magnet.
- a permanent magnet is of dimensions and limited cost, so there is no risk of imbalance the propeller or strain the economic performance of the device.
- the air gap between the third coupling means and the cell detection is generally perpendicular to the axis of rotation of the propeller.
- This aspect of the invention very significantly limits the interference between the magnetic field of drive, created between the first and second magnetic coupling means, and the magnetic detection or measurement field created between the third coupling medium and cell.
- the first and second coupling means form a magnetic field extending along an essentially radial direction around the axis of rotation of the propeller, the magnetic field created between the third coupling means and the detection cell being generally parallel to this axis of rotation.
- the second and third coupling means can be mounted on a sleeve placed around the sleeve blind, the third coupling means being oriented towards the detection cell.
- the first and second magnetic coupling means comprise each at least one permanent magnet whose direction of polarization is oriented radially with respect to the sleeve.
- the third coupling means comprises a permanent magnet
- the magnet of the third coupling means magnetic is arranged so that its direction of polarization is generally perpendicular to the direction of polarization of the magnets of the first and second means of coupling.
- the signal output of the detection cell is supplied to a unit of processing capable of determining, by calculation, from this signal, the speed of rotation of the propeller. So the device of the invention makes it possible to fulfill both a function of control of the effective rotation of the propeller and tachometer.
- the flange includes a blind cell receiving housing detection, the opening of this housing being turned towards the outside of the flange. This aspect of the invention ensures that the detection cell cannot in any case be in contact direct with the mixture contained in the container, which avoids any risk of pollution of the mixture or of contamination of the cell.
- the propeller includes several blades distributed around a sheath and a head with several branches supporting this sheath, a annular space being provided between the branches and a portion end of the sleeve forming a bearing. This annular space facilitates cleaning of the propeller mounted on the blind sleeve.
- a container 1 is formed of a tank 2 in which is placed a mixture 3 while a cover 4 is provided to close an upper opening of the tank.
- a flange 5 of non-magnetic material supporting a magnetic stirrer comprising an electric drive motor 6, located outside of the tank 2, and a propeller 7, disposed at the 'inside the tank in the mixture 3.
- the rotation of the propeller 7 by the electric motor 6 results in a displacement of its blades 8 around an axis of rotation XX', which has the effect of stir the mixture 3.
- a bevel gear 9 is arranged at the outlet of the motor 6 and its output shaft is constituted by a shaft 10 partially visible in Figure 2.
- This shaft 10 is made integral with a hollow shaft 11 by means of a fixing screw 12. It would also possible to mount motor 6 in direct connection to a shaft 10, the use of a bevel gear not being essential.
- the hollow shaft 11 carries two rows of permanent magnets 13 regularly distributed around the periphery of the tree 11.
- the North-South polarity of the magnets 13 is directed in directions Y-Y 'or Y-Y "generally perpendicular to the axis X-X'.
- the rotation of the shaft 10 by the motor 6 results in the magnets 13 rotating around the axis XX 'while their respective polarity lines are oriented perpendicular to this axis.
- the flange 5 is mounted on the wall 2 a of the tank 2 by a weld bead 14, so that the assembly thus produced is sealed.
- the flange 5 is shaped into a sleeve 15 whose end is closed by a plate 16 welded to the sleeve 15.
- the assembly between the sleeve 15 and the plate 16 is sealed.
- the plate 16 on the sleeve 15 the latter is blind in the sense that it does not open into the interior of the tank 2.
- a bearing 17 is mounted on the plate 16 by means of a screw 18 received in a blind thread 19 of the plate 16.
- the bearing 17 carries a ring 20 whose outer surface 20 a constitutes a bearing surface.
- the propeller 7 comprises a head 21 formed of a ring 22 whose internal circular surface 22 a is intended to fit around the surface 20 a of the ring 20.
- a smooth bearing is thus produced by smooth contact, for example metal / metal, between surfaces 20 a and 22 a .
- Three branches 22 b regularly distributed at the periphery of the ring 22 extend radially outwards from the latter and support a sheath 23 disposed around the blind sleeve 15, radially outside of the latter.
- This sheath 23 carries, on its external surface, two rows of permanent magnets 24 arranged opposite the magnets 13 carried by the hollow shaft 11.
- the North-South polarity of the magnets 24 is directed in the directions YY ′ or YY ′′.
- An insert 25, made of stainless steel, is placed outside the magnets 24 to form, with the sheath 23, a cylindrical sleeve onto which the blades 8 of the propeller 7 can be welded.
- the rotation of the hollow shaft 11 results in a rotation of the magnets 13, which has the effect, given the magnetic field created between these magnets 13 and the corresponding magnets 24, to exercise on propeller 7 a couple with the same direction as the direction of rotation of the shaft 11 around the axis XX '.
- Propeller 7 is thus driven in rotation about the axis XX ', without contact direct mechanical between shaft 11 and propeller 7.
- a permanent magnet 30 is disposed at the bottom of the part 25, that is to say on the side of this part directed towards the flange 5.
- the North-South polarity of the magnet 30 is disposed in a direction ZZ 'generally parallel to the axis XX '.
- a blind bore 31 is provided, the opening 31 a of which is arranged at an external surface 5 a of the flange 5, that is to say of a surface facing the return d angle 9.
- a measuring cell 33 able to detect the proximity of the magnet 30 is installed in the bore 31.
- An air gap e is defined between the magnet 30 and the cell 33. In this air gap is created, at each passage of the magnet 30 opposite cell 33, a transient magnetic field which can be detected by cell 33 and transformed into an output or "top" signal which can be transmitted to a processing unit 34 by an electrically conductive cable 35.
- the magnet 30 passes, at each turn, opposite the cell 33 which detects this passage thanks to the variation of the magnetic field created in the temporary air gap e , for example by creation of an eddy current in the cell 33.
- the effective rotation of the propeller 7 is detected by the cell 33.
- the intense electromagnetic field created at an air gap e 'between the magnets 13 and 24 through the sleeve 15 and the sheath 23 does not disturb the electromagnetic field temporarily prevailing in the air gap e , because the electromagnetic field created in the air gap e 'is closed by magnets 13 and 24.
- the electromagnetic field prevailing between magnets 13 and 24 extends in an essentially radial direction, around the axis XX', while the temporary electromagnetic field created between the magnet 30 and the cell 33 extends in a direction generally parallel to the direction Z-Z '.
- the parts visible in Figure 2 are, for the most part, made of a non-magnetic material, for example steel stainless, so as not to disturb the electromagnetic fields created between magnets 13 and 24 or between magnet 30 and cell 33.
- a non-magnetic material for example steel stainless
- attachment 25 could be deleted if the sheath 23 was produced by overmolding magnets 24 and 30.
- the invention has been described with a single magnet 30, but it is possible to use several magnets regularly distributed around the X-X 'axis, which gives better precision in the measurement chain carried out with cell 33.
- the unit 34 is advantageously provided for determining by, the calculation, the rotational speed of the propeller 7, which is easy since it suffices to count the number of tops received from the cell 33 during a time interval.
- the invention therefore makes it possible to produce a tachometer for a stirrer magnetic drive.
- An annular space 40 is provided between the branches 22b of the head 31 of the propeller 7 and the bearing 17, which allows a easy cleaning of propeller 7, including when stored in place on the blind sleeve 15, that is to say without disassembly of the propeller.
- All types of magnetic effect detection cells can be used with the agitator of the invention.
- the invention has been shown with two rows of magnets 13 and 24. However, the number and distribution of these magnets are variable. They can be arranged in a single row or, on the contrary, in more than two rows, depending on the torque to transmit and propeller geometry.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
Abstract
Description
- la figure 1 est une représentation schématique de principe d'un récipient pour mélanges équipé d'un agitateur conforme à l'invention ;
- la figure 2 est une vue à plus grande échelle du détail II de la figure 1, l'agitateur étant représenté en coupe.
Claims (10)
- Agitateur à entraínement magnétique pour un mélange (3) situé dans un récipient (1), ledit agitateur étant supporté par une bride, montée de façon étanche dans une paroi (2a) dudit récipient et pourvue d'un manchon borgne (15) à l'intérieur duquel est logé un arbre d'entraínement (11) muni d'un premier moyen (13) de couplage magnétique, alors qu'une hélice (7) disposée autour dudit manchon est pourvue d'un second moyen (24) de couplage magnétique apte à coopérer avec ledit premier moyen de couplage magnétique pour l'entraínement de ladite hélice autour d'un axe de rotation (X-X'), caractérisé en ce que ladite hélice (7) est solidaire d'un troisième moyen (30) de couplage magnétique, disposé en regard d'une cellule (33) de détection du passage dudit troisième moyen de couplage magnétique, ladite cellule étant portée par ladite bride (5).
- Agitateur selon la revendication 1, caractérisé en ce que ledit troisième moyen de couplage magnétique comprend au moins un aimant permanent (30).
- Agitateur selon l'une des revendications 1 ou 2, caractérisé en ce que l'entrefer (e) entre ledit troisième moyen de couplage (30) et ladite cellule de détection (3) est globalement perpendiculaire à l'axe de rotation (X-X') de ladite hélice (7).
- Agitateur selon la revendication 3, caractérisé en ce que lesdits premier (13) et second (24) moyens de couplage forment un champ magnétique s'étendant selon une direction (Y-Y', Y-Y") essentiellement radiale autour dudit axe de rotation (X-X') de ladite hélice (7), le champ magnétique créé entre ledit troisième moyen (30) de couplage et ladite cellule de détection (33) étant globalement parallèle audit axe de rotation.
- Agitateur selon la revendication 4, caractérisé en ce que lesdits second (24) et troisième (30) moyens de couplage sont montés sur un fourreau (23) placé autour dudit manchon borgne (15), ledit troisième moyen (30) de couplage étant orienté vers ladite cellule de détection (33).
- Agitateur selon l'une des revendications précédentes, caractérisé en ce que lesdits premier (13) et second (24) moyens de couplage magnétique comprennent chacun au moins un aimant permanent (13, 24) dont la direction de polarisation (Y-Y', Y-Y") est orientée radialement par rapport audit manchon (15).
- Agitateur selon les revendications 2 et 6, caractérisé en ce que ledit aimant (30) dudit troisième moyen de couplage magnétique est disposé de telle sorte que sa direction de polarisation est globalement perpendiculaire à la direction de polarisation (Y-Y', Y-Y") des aimants (13, 24) des premier et second moyens de couplage.
- Agitateur selon l'une des revendications précédentes, caractérisé en ce que le signal de sortie de ladite cellule de détection (33) est fourni à une unité de traitement (34) apte à déterminer, par le calcul, à partir dudit signal, la vitesse de rotation de ladite hélice (7).
- Agitateur selon l'une des revendications précédentes, caractérisé en ce que ladite bride (5) comprend un logement borgne (31) de réception de ladite cellule de détection (33), l'ouverture (31a) dudit logement étant tournée vers l'extérieur (5a) de ladite bride.
- Agitateur selon l'une des revendications précédentes, caractérisé en ce que ladite hélice (7) comprend plusieurs pales (8) réparties autour d'un fourreau (23) et une tête (21) munie de plusieurs branches (22b) soutenant ledit fourreau, un espace annulaire (40) étant ménagé entre lesdites branches et une partie terminale (17) dudit manchon (15) formant palier (20).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9807259 | 1998-06-05 | ||
FR9807259A FR2779361B1 (fr) | 1998-06-05 | 1998-06-05 | Agitateur a entrainement magnetique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0962249A1 true EP0962249A1 (fr) | 1999-12-08 |
EP0962249B1 EP0962249B1 (fr) | 2003-01-02 |
Family
ID=9527196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99420128A Revoked EP0962249B1 (fr) | 1998-06-05 | 1999-06-04 | Agitateur à entraínement magnétique |
Country Status (6)
Country | Link |
---|---|
US (1) | US6065865A (fr) |
EP (1) | EP0962249B1 (fr) |
CA (1) | CA2273677C (fr) |
DE (1) | DE69904673T2 (fr) |
ES (1) | ES2187129T3 (fr) |
FR (1) | FR2779361B1 (fr) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6416215B1 (en) | 1999-12-14 | 2002-07-09 | University Of Kentucky Research Foundation | Pumping or mixing system using a levitating magnetic element |
US20040009610A1 (en) * | 1999-04-29 | 2004-01-15 | The University Of Wyoming Research Corporation D/B/A Western Research Institute | Organic contaminant soil extraction system |
FR2796569B1 (fr) * | 1999-07-22 | 2002-04-26 | Cogema | Agitation d'un milieu au moyen d'un agitateur magnetique avec controle de l'entrainement magnetique, dispositif associe |
US6758593B1 (en) | 2000-10-09 | 2004-07-06 | Levtech, Inc. | Pumping or mixing system using a levitating magnetic element, related system components, and related methods |
US7086778B2 (en) * | 2000-10-09 | 2006-08-08 | Levtech, Inc. | System using a levitating, rotating pumping or mixing element and related methods |
US7762716B2 (en) * | 2000-10-09 | 2010-07-27 | Levtech, Inc. | Mixing vessel with a fluid-agitating element supported by a roller bearing |
US6837613B2 (en) * | 2001-04-10 | 2005-01-04 | Levtech, Inc. | Sterile fluid pumping or mixing system and related method |
EP1243315A1 (fr) * | 2001-03-22 | 2002-09-25 | Avantium International B.V. | Agitateur et procédé de mesurer un paramètre du milieu à agiter |
US6543928B2 (en) | 2001-05-04 | 2003-04-08 | General Machine Company Of New Jersey, Inc. | Processing vessel and method for mixing powders with a magnetically coupled agitator |
EP1534412B1 (fr) * | 2001-10-03 | 2010-08-18 | Levtech Inc. | Recipient de melange possedant un receptacle pour un element agitateur de fluide |
US6827974B2 (en) * | 2002-03-29 | 2004-12-07 | Pilkington North America, Inc. | Method and apparatus for preparing vaporized reactants for chemical vapor deposition |
US20030198128A1 (en) * | 2002-04-19 | 2003-10-23 | Carlson Roger W. | Mixing system having non-contacting bearings |
US6854877B2 (en) * | 2002-10-16 | 2005-02-15 | Aseptic Controls Investment Co. | Mixer for aseptic liquids |
DE10318599A1 (de) * | 2003-04-24 | 2004-11-11 | Mavag Verfahrenstechnik Ag | Rührer zum Mischen, Homogenisieren und Dispergieren |
US7168848B2 (en) * | 2003-07-02 | 2007-01-30 | Spx Corporation | Axial-pumping impeller apparatus and method for magnetically-coupled mixer |
US7160023B2 (en) * | 2004-03-25 | 2007-01-09 | Itt Manufacturing Enterprises, Inc. | System for detachably coupling a drive to a mixer mounted in a portable tank |
US7396153B2 (en) * | 2005-04-05 | 2008-07-08 | Andersson Per-Olof K | Ultraclean magnetic mixer |
EP1748201B1 (fr) * | 2005-07-29 | 2010-12-29 | Zeta Biopharma GmbH | Mélangeur magnétique |
WO2007027100A1 (fr) * | 2005-08-31 | 2007-03-08 | Sinvent As | Système magnétique dans une cellule pvt |
DE102006001623B4 (de) * | 2006-01-11 | 2009-05-07 | Sartorius Stedim Biotech Gmbh | Behälter und Verfahren zum Mischen von Medien |
US20070247968A1 (en) * | 2006-04-21 | 2007-10-25 | V & P Scientific, Inc. | Sandwich magnetic stir elements for stirring the contents of vessels |
EP2114554A1 (fr) * | 2007-02-21 | 2009-11-11 | Levtech Inc. | Roulement à rouleaux pour élément agitateur de fluide et récipient associé |
NZ563464A (en) * | 2007-11-14 | 2010-03-26 | Sensortec Ltd | Instrument for use in fluid with mixing element also serving to sense parameter of fluid and not physically connected to driving means |
JP2009248381A (ja) * | 2008-04-02 | 2009-10-29 | Seiko Epson Corp | 液体収容装置、及び、液体有無判定方法 |
WO2011049492A1 (fr) * | 2009-10-21 | 2011-04-28 | Metenova Ab | Dispositif d'agitation |
ES2393378B1 (es) * | 2011-06-07 | 2013-10-31 | Electrodomésticos Taurus, S.L. | Encimera de cocina con medios de accionamiento giratorio y recipiente de cocina utilizable con dicha encimera |
DE102011122554B3 (de) * | 2011-12-27 | 2013-03-07 | Eagleburgmann Germany Gmbh & Co. Kg | Magnetkupplung und Rührwerk mit derartiger Magnetkupplung |
US10357748B2 (en) * | 2014-03-28 | 2019-07-23 | Asepco | Magnetically coupled mixer with thrust bearing friction control |
KR20190039109A (ko) | 2016-07-15 | 2019-04-10 | 게이트 사이언티픽 인코포레이티드 | 폐쇄 환경의 무선 감지 특성 및 그 장치 |
AT518668B1 (de) * | 2017-01-25 | 2017-12-15 | Zeta Biopharma Gmbh | Rührwerk für einen Rührbehälter |
PT3530160T (pt) * | 2018-02-21 | 2020-09-17 | Vorwerk Co Interholding | Dispositivo de preparação de alimentos com travamento |
US11065589B2 (en) * | 2018-12-10 | 2021-07-20 | Pall Corporation | Radially driven agitator |
EP4380720A1 (fr) | 2021-09-15 | 2024-06-12 | SaniSure, Inc. | Système de mélange magnétique à faible volume |
Citations (1)
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EP0617999A1 (fr) * | 1993-03-30 | 1994-10-05 | DRAISWERKE GmbH | Mélangeur avec accouplement magnétique |
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US3730488A (en) * | 1972-05-18 | 1973-05-01 | Jet Spray Cooler Inc | Magnetic drive coupling for beverage dispenser |
US4209259A (en) * | 1978-11-01 | 1980-06-24 | Rains Robert L | Magnetic mixer |
DE3039810A1 (de) * | 1980-10-22 | 1982-05-19 | Franz Klaus Union Armaturen, Pumpen Gmbh & Co, 4630 Bochum | Stellantrieb mit einem spaltrohr |
JPS60125240A (ja) * | 1983-12-08 | 1985-07-04 | Ishikawajima Harima Heavy Ind Co Ltd | 無漏洩撹拌機 |
JPS6331528A (ja) * | 1986-07-23 | 1988-02-10 | Satake Kagaku Kikai Kogyo Kk | 撹拌装置 |
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JPH01130722A (ja) * | 1987-11-18 | 1989-05-23 | Komatsugawa Kakoki Kk | 攪伴装置 |
IT1225238B (it) * | 1988-09-23 | 1990-11-02 | Co Ra Di Lardieri Salvatore | Gruppo di agitazione a trascinamento magnetico |
KR0138254B1 (ko) * | 1989-03-10 | 1998-04-27 | 니시오카 시게루 | 교반장치 |
SE462834B (sv) * | 1989-05-26 | 1990-09-10 | Steridose Systems Ab | Drivanordning foer en omroerare, vilken aer vridbart lagrad inti en tank foer omroering och blandning av sterila vaetskor |
SE463750B (sv) * | 1989-05-26 | 1991-01-21 | Steridose Systems Ab | Omroerare foer aseptiska aendamaal, vilken aer vridbar i en foerutbestaemd rotationsriktning genom induktiva drivorgan inuti en tank |
US5240856A (en) * | 1991-10-23 | 1993-08-31 | Cellpro Incorporated | Apparatus for cell separation |
DE4232934C2 (de) * | 1992-10-01 | 1996-03-28 | Mavag Verfahrenstech Ag | Doppel-Impeller zum Rühren von sterilen Flüssigkeiten |
US5533803A (en) * | 1992-10-01 | 1996-07-09 | Mavag Verfahrenstechnik Ag | Magnetic stirring apparatus with contactless coupling between stirring shaft and stirring tool |
DE4232936C2 (de) * | 1992-10-01 | 1996-03-28 | Mavag Verfahrenstech Ag | Impeller zum Rühren von sterilen Flüssigkeiten |
JP2596881B2 (ja) * | 1992-12-24 | 1997-04-02 | 株式会社荏原製作所 | マグネット式ノンシール撹拌機 |
US5470152A (en) * | 1993-02-23 | 1995-11-28 | General Signal Corporation | Radially mounted magnetic coupling |
US5478149A (en) * | 1995-04-24 | 1995-12-26 | Magnetic Mixers, Inc. | Magnetic mixer |
US5779359A (en) * | 1996-12-05 | 1998-07-14 | General Signal Corporation | Mixer having exposed clean-in-place bearing assemblies |
US5758965A (en) * | 1996-12-05 | 1998-06-02 | General Signal Corporation | Mixer system |
-
1998
- 1998-06-05 FR FR9807259A patent/FR2779361B1/fr not_active Expired - Fee Related
-
1999
- 1999-06-04 US US09/325,875 patent/US6065865A/en not_active Expired - Lifetime
- 1999-06-04 ES ES99420128T patent/ES2187129T3/es not_active Expired - Lifetime
- 1999-06-04 DE DE69904673T patent/DE69904673T2/de not_active Expired - Fee Related
- 1999-06-04 EP EP99420128A patent/EP0962249B1/fr not_active Revoked
- 1999-06-04 CA CA002273677A patent/CA2273677C/fr not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0617999A1 (fr) * | 1993-03-30 | 1994-10-05 | DRAISWERKE GmbH | Mélangeur avec accouplement magnétique |
Also Published As
Publication number | Publication date |
---|---|
DE69904673T2 (de) | 2003-10-16 |
DE69904673D1 (de) | 2003-02-06 |
CA2273677A1 (fr) | 1999-12-05 |
FR2779361A1 (fr) | 1999-12-10 |
ES2187129T3 (es) | 2003-05-16 |
US6065865A (en) | 2000-05-23 |
EP0962249B1 (fr) | 2003-01-02 |
CA2273677C (fr) | 2008-07-29 |
FR2779361B1 (fr) | 2000-07-28 |
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