EP0910745B1 - Diaphragm for a diaphragm pump - Google Patents
Diaphragm for a diaphragm pump Download PDFInfo
- Publication number
- EP0910745B1 EP0910745B1 EP97938821A EP97938821A EP0910745B1 EP 0910745 B1 EP0910745 B1 EP 0910745B1 EP 97938821 A EP97938821 A EP 97938821A EP 97938821 A EP97938821 A EP 97938821A EP 0910745 B1 EP0910745 B1 EP 0910745B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- membrane
- pump
- central region
- membrane body
- outer diameter
- 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.)
- Revoked
Links
- 239000012528 membrane Substances 0.000 claims description 66
- 239000000463 material Substances 0.000 claims description 7
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- 239000013013 elastic material Substances 0.000 claims description 3
- 229920001897 terpolymer Polymers 0.000 claims description 3
- 239000013536 elastomeric material Substances 0.000 claims 1
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/0009—Special features
- F04B43/0054—Special features particularities of the flexible members
Definitions
- the invention relates to a membrane for a membrane pump, which has a membrane body Made of elastic material that is clamped on the circumference and one in the Membrane body has a vulcanized rigid mandrel, which with the Pump drive part is connected.
- Such membranes are used in membrane pumps for pumping Liquids and gases, but can also be used as vacuum pumps.
- the diaphragm of the diaphragm pump is circumferentially between the pump head and Crankcase clamped and closes the one located above the membrane Pump room down.
- the membrane is at its lower, the pump room opposite end connected to a drive part, the up and down movement of the Membrane.
- the membrane firmly clamped on the circumference deforms due to the up and down movement elastic and enlarged and reduced alternately the pump room.
- Such a diaphragm pump is for example in the utility model DE G 94 10 116 U1 described.
- Compression ratio i.e. the ratio of the maximum to the minimum Pump room volume, essential.
- the compression ratio will in particular of the minimum achievable pump chamber volume, i.e. by how good the elastic membrane can close off the pump chamber in its uppermost position, certainly.
- the one usually used to drive the membrane Connecting rod drive now occurs just below top dead center (TDC) at the Upward and downward movements each have a tilting movement of the Drive linkage and thus the membrane.
- TDC top dead center
- the tilting of the membrane causes an elastic asymmetrical deformation of the surface of the membrane that the minimum volume of the pumping space and thus the maximum compression ratio of the Pump determined.
- the fixed one connected to the drive linkage Mold core tilts just below top dead center, so that the Membrane surface in these tilt positions in areas on both sides of the upper one Dead center protrudes further into the pump chamber than at top dead center itself upper pump chamber wall have a greater distance from the membrane surface, whereby the minimum volume of the pump chamber and thus the compression ratio decreases.
- the object of the invention is therefore to provide a membrane for a membrane pump propose a smaller minimum pump chamber volume and thus a higher one Compression ratio of the diaphragm pump enables.
- the rigid mold core of the invention Membrane has an outside diameter that is less than a third of the outside diameter of the membrane body.
- the central area of the membrane body is also included of such a thickness that, despite the elastic material, it is also outside the rigid mold core ensures sufficient rigidity of the membrane.
- the membrane body can advantageously be made of elastomer material, in particular of ethylene-propylene terpolymer (EPDM) exist.
- EPDM ethylene-propylene terpolymer
- Claim 4 is the material thickness of the elastic membrane material above the rigid molded body between 7.5% and 10% of the diameter of the membrane.
- the angle of the frustoconical central area of the elastic membrane body to the radial plane perpendicular to the direction of movement of the Drive is according to an advantageous embodiment according to claim 5 preferably 35 ° to 45 °.
- the frustoconical central area of the membrane body contributes advantageously to the rigidity of the membrane.
- a preferred embodiment of the membrane according to the invention is based on the Described accompanying drawing, in which the only figure is an embodiment of the shows membrane according to the invention in cross section.
- the membrane 1 consists of an elastic membrane body 2 made of elastomer material, especially ethylene-propylene terpolymer (EPDM), the circumferential between Pump head and crankcase (not shown) is clamped, and a rigid Mold core 3, for example made of metal, which is vulcanized into the membrane.
- a thread 4 or the like for connection to the pump drive linkage arranged.
- the membrane body 2 consists of an outer flex area smaller Thick and a central frustoconical area, in which the rigid mandrel 3rd is vulcanized.
- the angle of the conical section to the horizontal is preferably 35 ° to 45 °. This angle allows for a small one Outside diameter F of the mandrel 3 a sufficient strength of the membrane.
- the rigid mandrel 3 has one Outer diameter F, which is less than a third of the outer diameter D of the Membrane 1 is.
- the rigid Forming core 3 lying area of the membrane body 2 has a material thickness L that between 5% and 20%, preferably between 7.5% and 10% of the outer diameter D of Membrane is.
- the relatively thick elastic part above the mandrel and especially the central conical area of the membrane body outside the rigid mold core 3 can deform elastically, it is possible to a very small Set the distance between the membrane surface and the pump chamber wall at top dead center, although before and after top dead center by the tilting movement of the with the Drive stands connected rigid mandrel 3 of the elastic conical area outside of the mandrel 3 comes into contact with the pump chamber wall, since the spring back touching areas of the membrane 1.
- the upper wall of the pump chamber 5 are formed such that the top dead center Membrane only a very small dead volume of the pump chamber remains and therefore a large compression ratio of those operated with the membrane according to the invention Pump is enabled.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Description
Die Erfindung betrifft eine Membrane für eine Membranpumpe, die einen Membrankörper aus elastischem Material, der umfangsseitig eingespannt wird und einen in den Membrankörper einvulkanisierten starren Formkern aufweist, der mit dem Pumpenantriebsteil verbunden wird.The invention relates to a membrane for a membrane pump, which has a membrane body Made of elastic material that is clamped on the circumference and one in the Membrane body has a vulcanized rigid mandrel, which with the Pump drive part is connected.
Derartige Membranen werden verwendet in Membranpumpen zum Fördern von Flüssigkeiten und Gasen, sind aber auch als Vakuumpumpen einsetzbar.Such membranes are used in membrane pumps for pumping Liquids and gases, but can also be used as vacuum pumps.
Die Membrane der Membranpumpe wird umfangsseitig zwischen Pumpenkopf und Kurbelgehäuse eingespannt und schließt den sich oberhalb der Membrane befindlichen Pumpenraum nach unten ab. Die Membrane ist an ihrem unteren, dem Pumpenraum abgewandten Ende mit einem Antriebsteil verbunden, das eine Auf- und Abbewegung der Membrane hervorruft. Die umfangsseitig fest eingespannte Membran verformt sich aufgrund der Auf- und Abbewegung elastisch und vergrößert und verkleinert so abwechselnd den Pumpraum.The diaphragm of the diaphragm pump is circumferentially between the pump head and Crankcase clamped and closes the one located above the membrane Pump room down. The membrane is at its lower, the pump room opposite end connected to a drive part, the up and down movement of the Membrane. The membrane firmly clamped on the circumference deforms due to the up and down movement elastic and enlarged and reduced alternately the pump room.
Eine derartige Membranpumpe ist beispielsweise im Gebrauchsmuster DE G 94 10 116 U1 beschrieben.Such a diaphragm pump is for example in the utility model DE G 94 10 116 U1 described.
Für Pumpen großer Leistungsfähigkeit sowie für Vakuumpumpen ist das Verdichtungsverhältnis, d.h. das Verhältnis vom maximalen zum minimalen Pumpraumvolumen, von wesentlicher Bedeutung. Das Verdichtungsverhältnis wird insbesondere von dem minimalen erreichbaren Pumpraumvolumen, d.h. dadurch, wie gut die elastische Membran den Pumpraum in ihrer obersten Position abschließen kann, bestimmt. Bei dem üblicherweise zum Antrieb der Membrane verwendeten Pleuelstangenantrieb tritt nun kurz unterhalb des oberen Totpunktes (OT) bei der Aufwärts- und bei der Abwärtsbewegung jeweils eine Kippbewegung des Antriebsgestänges und damit der Membrane auf. Die Verkippung der Membrane verursacht eine elastische asymmetrische Verformung der Oberfläche der Membrane, die das Minimalvolumen des Pumraums und somit das maximale Verdichtungsverhältnis der Pumpe bestimmt. In anderen Worten, der mit dem Antriebsgestänge verbundene feste Formkern verkippt sich kurz unterhalb des oberen Totpunktes, so daß die Membranoberfläche in diesen Kipp-Positionen in Bereichen beidseits des oberen Totpunktes weiter in den Pumpenraum ragt als am oberen Totpunkt selbst. Somit muß die obere Pumpraumwand einen größeren Abstand von der Membranoberfläche aufweisen, wodurch das Minimalvolumen des Pumpraumes und damit das Verdichtungsverhältnis abnimmt.This is for pumps with high performance as well as for vacuum pumps Compression ratio, i.e. the ratio of the maximum to the minimum Pump room volume, essential. The compression ratio will in particular of the minimum achievable pump chamber volume, i.e. by how good the elastic membrane can close off the pump chamber in its uppermost position, certainly. The one usually used to drive the membrane Connecting rod drive now occurs just below top dead center (TDC) at the Upward and downward movements each have a tilting movement of the Drive linkage and thus the membrane. The tilting of the membrane causes an elastic asymmetrical deformation of the surface of the membrane that the minimum volume of the pumping space and thus the maximum compression ratio of the Pump determined. In other words, the fixed one connected to the drive linkage Mold core tilts just below top dead center, so that the Membrane surface in these tilt positions in areas on both sides of the upper one Dead center protrudes further into the pump chamber than at top dead center itself upper pump chamber wall have a greater distance from the membrane surface, whereby the minimum volume of the pump chamber and thus the compression ratio decreases.
Die Aufgabe der Erfindung liegt daher darin, eine Membrane für eine Membranpumpe vorzuschlagen, die ein kleineres minimales Pumpraumvolumen und somit ein höheres Verdichtungsverhältnis der Membranpumpe ermöglicht.The object of the invention is therefore to provide a membrane for a membrane pump propose a smaller minimum pump chamber volume and thus a higher one Compression ratio of the diaphragm pump enables.
Die Aufgabe wird gelöst durch die im Anspruch 1 beschriebenen Merkmale.The object is achieved by the features described in claim 1.
Damit die durch das Antriebsgestänge auf die Membrane übertragene Hubbewegung nicht zu einer unerwünschten Verformung der Membrane, sondern zur Erzielung eines möglichst großen Hubvolumens führt, hat der starre Formkern der erfindungsgemäßen Membrane einen Außendurchmesser, der weniger als ein Drittel des Außendurchmessers des Membrankörpers beträgt. Außerdem ist der zentrale Bereich des Membrankörpers mit einer solchen Dicke ausgebildet, daß er trotz des elastischen Materials auch außerhalb des starren Formkerns eine genügende Steifigkeit der Membrane gewährleistet.So that the lifting movement transmitted to the diaphragm by the drive linkage does not to an undesirable deformation of the membrane, but to achieve a leads to the greatest possible stroke volume, the rigid mold core of the invention Membrane has an outside diameter that is less than a third of the outside diameter of the membrane body. The central area of the membrane body is also included of such a thickness that, despite the elastic material, it is also outside the rigid mold core ensures sufficient rigidity of the membrane.
Der Membrankörper kann vorteilhaft aus Elastomermaterial, insbesondere aus Ethylen-Propylen-Terpolymer (EPDM) bestehen.The membrane body can advantageously be made of elastomer material, in particular of ethylene-propylene terpolymer (EPDM) exist.
Gemäß einer besonders vorteilhaften Ausbildung der erfindungsgemäßen Membrane nach Anspruch 4 beträgt die Materialdicke des elastischen Membranmaterials oberhalb des starren Formkörpers zwischen 7,5 % und 10 % des Durchmessers der Membrane. According to a particularly advantageous embodiment of the membrane according to the invention Claim 4 is the material thickness of the elastic membrane material above the rigid molded body between 7.5% and 10% of the diameter of the membrane.
Der Winkel des kegelstumpfförmig nach unten zulaufenden mittleren Bereiches des elastischen Membrankörpers zur Radialebene senkrecht zur Bewegungsrichtung des Antriebs beträgt gemäß einer vorteilhaften Ausführungsform gemäß Anspruch 5 vorzugsweise 35° bis 45°. Der kegelstumpfförmige zentrale Bereich des Membrankörpers trägt vorteilhaft zur Steifigkeit der Membrane bei.The angle of the frustoconical central area of the elastic membrane body to the radial plane perpendicular to the direction of movement of the Drive is according to an advantageous embodiment according to claim 5 preferably 35 ° to 45 °. The frustoconical central area of the membrane body contributes advantageously to the rigidity of the membrane.
Ein bevorzugtes Ausführungsbeispiel der erfindungsgemäßen Membran ist anhand der beiliegenden Zeichnung beschrieben, in der die einzige Figur ein Ausführungsbeispiel der erfindungsgemäßen Membran im Querschnitt zeigt.A preferred embodiment of the membrane according to the invention is based on the Described accompanying drawing, in which the only figure is an embodiment of the shows membrane according to the invention in cross section.
Die Membrane 1 besteht aus einem elastischen Membrankörper 2 aus Elastomermaterial, insbesondere Ethylen-Propylen-Terpolymer (EPDM), der umfangsseitig zwischen Pumpenkopf und Kurbelgehäuse (nicht dargestellt) eingespannt ist, und einem starren Formkern 3, beispielsweise aus Metall, der in die Membrane einvulkanisiert ist. An den Formkern 3 ist ein Gewinde 4 od.dgl. zur Verbindung mit dem Pumpenantriebsgestänge angeordnet. Der Membrankörper 2 besteht aus einem äußeren Walkbereich geringerer Dicke und einem zentralen kegelstumpfformigen Bereich, in den der starre Formkern 3 einvulkanisiert ist. Der Winkel des kegelförmigen Abschnitts zur Horizontalen beträgt vorzugsweise 35° bis 45°. Dieser Winkel ermöglicht trotz eines kleinen Außendurchmessers F des Formkerns 3 eine genügende Festigkeit der Membrane.The membrane 1 consists of an elastic membrane body 2 made of elastomer material, especially ethylene-propylene terpolymer (EPDM), the circumferential between Pump head and crankcase (not shown) is clamped, and a rigid Mold core 3, for example made of metal, which is vulcanized into the membrane. To the Mold core 3 is a thread 4 or the like. for connection to the pump drive linkage arranged. The membrane body 2 consists of an outer flex area smaller Thick and a central frustoconical area, in which the rigid mandrel 3rd is vulcanized. The angle of the conical section to the horizontal is preferably 35 ° to 45 °. This angle allows for a small one Outside diameter F of the mandrel 3 a sufficient strength of the membrane.
Damit die durch das (nicht dargestellte) Antriebsgestänge auf den Formkern 3 übertragene
Kippbewegung nicht zu einer unerwünschten Verformung der dem Pumpenraum 5
zugewandten Oberfläche der Membrane führt, hat der starre Formkern 3 einen
Außendurchmesser F, der weniger als ein Drittel des Außendurchmessers D der
Membrane 1 beträgt. Außerdem hat der im zentralen Bereich oberhalb des starren
Formkerns 3 liegende Bereich des Membrankörpers 2 eine Materialdicke L, die zwischen
5 % und 20 %, bevorzugt zwischen 7,5 % und 10 % des Außendurchmessers D der
Membrane beträgt. Da sich der relativ dicke elastische Teil oberhalb des Formkerns und
besonders auch der zentrale kegelförmige Bereich des Membrankörpers außerhalb des
starren Formkerns 3 elastisch verformen können, ist es möglich, einen sehr geringen
Abstand der Membranoberfläche zur Pumpenraumwand im oberen Totpunkt einzustellen,
obwohl vor und nach dem oberen Totpunkt durch die Kippbewegung des mit dem
Antriebsgestände verbundenen starren Formkerns 3 der elastische kegelförmige Bereich
außerhalb des Formkerns 3 in Kontakt mit der Pumpenraumwand kommt, da die
berührenden Bereiche der Membrane 1 elastisch zurückfedern können. Somit kann die
obere Wand des Pumpraumes 5 derart ausgebildet werden, daß am oberen Totpunkt der
Membran nur ein sehr geringes Totvolumen des Pumpraumes verbleibt und daher ein
großes Verdichtungsverhältnis der mit der erfindungsgemäßen Membran betriebenen
Pumpe ermöglicht wird.So that the drive linkage (not shown) transmitted to the mandrel 3
Tilting movement does not lead to an undesired deformation of the
Claims (6)
- Membrane (1) for a membrane pump, havinga membrane body (2) of elastic material, of a substantially annular outer region of lesser thickness which is mounted at its periphery, and, adjoining thereto radially towards the centre, a central region which becomes thicker, anda rigid form core (3) vulcanised into the central region of the membrane body (2), for connection with a pump drive part,a) the outer diameter (F) of the form core (3) being less than one third of the outer diameter (D) of the membrane body (2),b) the material thickness (L) of the membrane body (2) in the central region above the form core (3) being between 7.5% and 20% of the outer diameter (D) of the membrane andc) the central region of the membrane body (2) being, on the side away from the pump chamber (5), truncated cone shaped.
- Membrane according to claim 1,
characterised in that,
the membrane body is of an elastomeric material. - Membrane according to claim 2,
characterised in that,
the membrane body is of ethylene-propylene-terpolymer (EPDM). - Membrane according to any of claims 1 to 3,
characterised in that,
the material thickness (L) of the membrane body (2), in the central region above the form core (3), is between 7.5% and 10% of the outer diameter (D) of the membrane. - Membrane according to any of claims 1 to 4,
characterised in that,
the truncated cone shaped central region of the membrane body (2) exhibits an angle (W) of between 35° and 45° with respect to the radial plane. - Membrane pump having a membrane according to any of claims 1 to 5.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29612117U | 1996-07-11 | ||
| DE29612117U DE29612117U1 (en) | 1996-07-11 | 1996-07-11 | Diaphragm for a diaphragm pump |
| PCT/EP1997/003698 WO1998002661A1 (en) | 1996-07-11 | 1997-07-11 | Diaphragm for a diaphragm pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0910745A1 EP0910745A1 (en) | 1999-04-28 |
| EP0910745B1 true EP0910745B1 (en) | 2002-11-27 |
Family
ID=8026386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97938821A Revoked EP0910745B1 (en) | 1996-07-11 | 1997-07-11 | Diaphragm for a diaphragm pump |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6055898A (en) |
| EP (1) | EP0910745B1 (en) |
| JP (1) | JP2000517392A (en) |
| DE (2) | DE29612117U1 (en) |
| WO (1) | WO1998002661A1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19647882A1 (en) * | 1996-11-20 | 1998-05-28 | Knf Neuberger Gmbh | Diaphragm pump |
| DE19834468C1 (en) * | 1998-07-30 | 2000-02-24 | Asf Thomas Ind Gmbh | Membrane for a membrane pump comprises a membrane body made of elastic material, which can be circumferentially tensioned, and a central rigid core |
| US8050198B2 (en) * | 1999-05-24 | 2011-11-01 | Qualcomm Incorporated | Method and system for scheduling data transmission in communication systems |
| US6832491B2 (en) * | 2002-03-21 | 2004-12-21 | Ritchie Engineering Company, Inc. | Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus |
| US6779350B2 (en) * | 2002-03-21 | 2004-08-24 | Ritchie Enginerring Company, Inc. | Compressor head, internal discriminator, external discriminator, manifold design for refrigerant recovery apparatus and vacuum sensor |
| US20040118410A1 (en) * | 2002-12-18 | 2004-06-24 | Griesbach Henry L. | Surgical drape having an instrument holder |
| US20050126200A1 (en) * | 2003-12-05 | 2005-06-16 | Ajit Ramachandran | Single valve manifold |
| DE102004036669A1 (en) * | 2004-07-28 | 2006-03-23 | Otto Bock Healthcare Gmbh | Pump with a closed with at least one flexible wall fluid volume |
| US20060228242A1 (en) * | 2005-04-11 | 2006-10-12 | Ritchie Engineering Company, Inc. | Vacuum pump |
| US20060228246A1 (en) * | 2005-04-11 | 2006-10-12 | Ritchie Engineering Company, Inc. | Vacuum pump |
| US7451690B2 (en) * | 2005-07-20 | 2008-11-18 | Wabco Gmbh | Spring-actuated air-brake cylinder for vehicle brake systems |
| US20070134112A1 (en) * | 2005-12-14 | 2007-06-14 | Hupp Evan L | Button diaphragm piston pump |
| CH702436A1 (en) * | 2009-12-23 | 2011-06-30 | Jean-Denis Rochat | DOSING PUMP FOR MEDICAL USE. |
| JP5502017B2 (en) * | 2011-04-15 | 2014-05-28 | 株式会社テクノ高槻 | Electromagnetic vibration type diaphragm pump |
| US10330094B2 (en) * | 2013-08-26 | 2019-06-25 | Blue-White Industries, Ltd. | Sealing diaphragm and methods of manufacturing said diaphragm |
| CH712963A1 (en) | 2016-09-29 | 2018-03-29 | Daetwyler Schweiz Ag | Pump diaphragm for a diaphragm pump for conveying a fluid. |
| CN111102176A (en) * | 2018-10-29 | 2020-05-05 | 日本电产株式会社 | Diaphragm sheet for diaphragm pump and diaphragm pump |
| DE102020125567A1 (en) * | 2020-09-30 | 2022-03-31 | Ulman Dichtungstechnik Gmbh | Composite diaphragm for diaphragm pumps |
| CN113898564B (en) * | 2021-09-08 | 2024-07-05 | 山东隆华新材料股份有限公司 | Diaphragm vacuum pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2267280A (en) * | 1937-10-15 | 1941-12-23 | Hermes Patentverwertungs Gmbh | Device for conveying fluids |
| CH251212A (en) * | 1946-02-05 | 1947-10-15 | Hanvag Ges Fuer Tech Vervollko | Diaphragm pump. |
| DE4007932A1 (en) * | 1990-03-13 | 1991-09-19 | Knf Neuberger Gmbh | Long service life diaphragm pump |
| DE9406216U1 (en) * | 1994-04-14 | 1994-09-22 | Knf-Neuberger Gmbh, 79112 Freiburg | Diaphragm pump with a shaped membrane |
| DE9410116U1 (en) | 1994-06-23 | 1994-08-11 | Knf-Neuberger Gmbh, 79112 Freiburg | Diaphragm pump with a shaped membrane |
| DE19510828C2 (en) * | 1995-03-24 | 1998-12-24 | Knf Neuberger Gmbh | Diaphragm pump with a shaped membrane |
-
1996
- 1996-07-11 DE DE29612117U patent/DE29612117U1/en not_active Expired - Lifetime
-
1997
- 1997-07-11 EP EP97938821A patent/EP0910745B1/en not_active Revoked
- 1997-07-11 DE DE59708833T patent/DE59708833D1/en not_active Revoked
- 1997-07-11 US US09/194,703 patent/US6055898A/en not_active Expired - Fee Related
- 1997-07-11 WO PCT/EP1997/003698 patent/WO1998002661A1/en not_active Application Discontinuation
- 1997-07-11 JP JP10505601A patent/JP2000517392A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE29612117U1 (en) | 1996-09-12 |
| WO1998002661A1 (en) | 1998-01-22 |
| DE59708833D1 (en) | 2003-01-09 |
| US6055898A (en) | 2000-05-02 |
| JP2000517392A (en) | 2000-12-26 |
| EP0910745A1 (en) | 1999-04-28 |
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