EP0724671B1 - Vorrichtung zum verschiessen eines fliessfähigen mediums, insbesondere eines erhärtbaren baustoffs - Google Patents
Vorrichtung zum verschiessen eines fliessfähigen mediums, insbesondere eines erhärtbaren baustoffs Download PDFInfo
- Publication number
- EP0724671B1 EP0724671B1 EP94929486A EP94929486A EP0724671B1 EP 0724671 B1 EP0724671 B1 EP 0724671B1 EP 94929486 A EP94929486 A EP 94929486A EP 94929486 A EP94929486 A EP 94929486A EP 0724671 B1 EP0724671 B1 EP 0724671B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- tube
- expulsion piston
- expulsion
- medium
- 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
Links
- 239000004566 building material Substances 0.000 title abstract description 8
- 239000012530 fluid Substances 0.000 title abstract 3
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000009969 flowable effect Effects 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000004035 construction material Substances 0.000 claims 1
- 239000003380 propellant Substances 0.000 description 24
- 239000007788 liquid Substances 0.000 description 11
- 238000010304 firing Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Definitions
- the invention relates to a device for firing a flowable medium, especially a hardening building material with the features of the preamble of claim 1.
- injection strands made of hardening Material directly using a suitable cannon to shoot into the soil to be solidified or in an impulse bring in or by using this cannon non-hardening liquids, such as water, Drill holes in the ground, which then with be filled with a hardening building material.
- a cartridge for expulsion of liquids known under pressure has a liquid and a propellant charge chamber, the are separated from each other by an expulsion piston.
- the expulsion piston encloses a cavity and its to the liquid column directed end face has one or more predetermined breaking points on. These predetermined breaking points cause the central axial part of the end face of the remaining part of the End face is separated as soon as the expelling piston Ignition of the propellant charge and passage through the liquid chamber strikes at its conical end.
- This after breaking The remaining part of the expulsion piston has the shape of a ring or a tube.
- a disadvantage of these known devices is the unfavorable Launch signature, i.e. after the liquid has leaked caused by the explosively expanding propellant gases high noise emission (muzzle blast) and the muzzle flash.
- the invention is therefore based on the object of a device for firing or accelerating a flowable Medium, such as liquids, solutions, emulsions and suspensions, especially of a hardening building material, which is a significant compared to known devices has lower noise emissions and the muzzle flash is almost completely suppressed.
- a flowable Medium such as liquids, solutions, emulsions and suspensions
- the invention therefore offers the advantage that such devices can be used in areas that comply with certain Noise protection regulations require. Beyond that a reduction of the dangers for operators and others in the People in the area of such a device are reached.
- the Pipe mouth arranged a nozzle which also serves as a collecting device serves for the expulsion piston.
- the Nozzle have an area widening into the interior of the tube, and the expulsion piston is designed to be deformable, that after the liquid has been expelled, it adheres to the inner wall This area creates and in this way the nozzle opening essentially seals.
- the expulsion piston is preferred made of a deformable material with little specific Weight made to catch the piston keep occurring impact forces low.
- metallic materials such as aluminum or brass, corresponding Metal alloys, composite materials based on plastics and reinforcing fibers are used.
- thermoplastics such as polytetrafluoroethylene (PTFE) or polyethylene (PE) is used.
- the expulsion piston has and / or the inner wall of the mouth area of the Pipe and / or the nozzle grooves, which are so directed and are dimensioned so that they seal after the nozzle opening Enable slow escape of the propellant gases without this a substantial noise emission would be connected.
- the driving piston can also be grooved with at least one a predetermined breaking point be provided opening, wherein the predetermined breaking point due to the deformation when the Expulsion piston is broken open in the nozzle and on this Way a slow escape of propellant gases without essential Sound emission is guaranteed.
- the propellant charge is formed in the form of a cartridge
- the expulsion piston is detachably connected to the cartridge. This can be too any medium that shoots out before inserting the cartridge or by means of a suitable feed device after its insertion done in the tube of the device.
- the nozzle block after each shot is offset against the pipe so that after moving a free one, not deformed by one Ejection piston sealed nozzle is located at the pipe mouth.
- the nozzle block can be operated by means of a first holding and adjusting device in the direction of the pipe axis and by means of a second adjustment device in a transverse to the tube axis Be designed to be movable in the direction.
- a device 1 for firing according to the invention a flowable medium, which in the special application as a cannon for injecting a hardenable building material, e.g. Liquid plastic or cement milk, in the solidified Loose rock 2 is formed.
- the device 1 is a Suspension 3 can be raised and lowered and can be at any angle Surface of the loose rock 2 to be consolidated directed will.
- the device 1 drives injection material after ignition of a propellant charge under high pressure in the form of a highly concentrated Beam out. This penetrates in the predetermined direction over a corresponding length in the loose rock 2. Depending on the desired depth of penetration, single shots can be made or shot series are provided. After inserting the required number of injection strands and after their Hardening is the loose rock 2 of that shown in Fig. 1 Terrain jump solidified by the tensile strands 4, wherein the strands act as reinforcement of the terrain jump.
- the use of the device according to the invention can, for example also be done in such a way that instead of direct Injecting hardening building material first for solidification necessary holes in the ground or the Lokkergestein 2 shot and then the holes with hardening Building material to be filled up.
- the manufacturing takes place the holes by injecting a concentrated high pressure water jet by means of the device according to the invention.
- Fig. 2a is a front portion of the tube 5 of the injection cannon 1 shown in Fig. 1.
- a nozzle 6 is arranged, which by means of a suitable quick-release fastener can be detachably connected to the tube 5.
- the diameter of the outlet opening 7 of the nozzle 6 is selected that depends on the pressure and the viscosity of the expelled flowable medium a high-speed jet 8 (Fig. 2b) with the desired ratios of pressure, speed and diameter results.
- the nozzle opening follows 7 an area 9 which preferably widens like a truncated cone on the one hand an improvement in the flow of the expelled Medium causes and secondly the function of one below described collecting device met.
- a front area of the tube 5 of the ready to fire in Fig. 2a shown device according to the invention is a predetermined amount of the medium 10 to be fired, for example Liquid plastic, cement milk or water introduced.
- the medium 10 to be fired for example Liquid plastic, cement milk or water introduced.
- a cartridge 11 in introduced the inside of the tube, which has an expulsion piston 12, the one in the front with a propellant charge 13 filled sleeve 14 is inserted.
- the diameter of the expulsion piston 12 corresponds approximately to the inside diameter of the Tube 5, so that the expulsion piston 12 with the flowable Seals medium 10 filled front area of tube 5, but still to expel the medium axially inside the pipe is kept slidable forward.
- the expulsion piston 12 shown in FIG. 2 is essentially cylindrical. In the end facing away from the nozzle 6 is initially cylindrical, but in the front area itself conical tapered cavity 15 formed, whereby a improved sealing against the medium 10 when driving through the tube 5 is reached.
- the improved sealing results by the forces caused by the pressure of the propellant gases 19 igniting the propellant charge in the radial direction on the thin, hollow cylindrical wall 16 of the expulsion piston 12 act, so that the wall 16 is pressed against the inner wall of the tube 5 becomes.
- Expulsion piston 12 both a weight saving and a Auxiliary volume, which arises when the propellant charge 13 burns up Peak pressure suppressed or weakened.
- the expulsion piston 12 is preferably made of a thermoplastic, for example PTFE (Teflon).
- the expulsion piston 12 shown in FIG. 2 has one or several axial recesses or blind holes 17 so that the remaining thin wall 18 during the deformation of the expulsion piston 12 when caught by the nozzle 6 as a predetermined breaking point works.
- Fig. 4 shows in longitudinal section (Fig. 4a) and in plan view (Fig. 4b) a preferred ejection piston 12, the nozzle 6th (see Fig. 2) facing end face is rounded.
- a blind hole 17 is arranged, as a result of which a thin wall 18 is created, when the expulsion piston 12 is deformed acts as a predetermined breaking point.
- longitudinal grooves 27 (Fig. 4) on the outer surface of the expulsion piston 12 may be arranged. This Grooves 27 cause a slow even when it is in contact with the nozzle Escape of the propellant gases.
- the expulsion piston 12 After the medium 10 has been completely expelled the expulsion piston 12 in the position shown in Fig. 2c. As can be seen from Fig. 2c, the expulsion piston 12 is under the pressure of the propellant gases 19 through in the direction of the pipe interior widening area 9 of the nozzle 6, the Expulsion piston 12 undergoes deformation. This will make the Nozzle opening 7 is essentially sealed, which means that explosive expansion of the propellant gases 19 after complete Expulsion of the medium 10 from the tube 5 and thus associated muzzle blast and the associated associated Muzzle flashes are practically completely suppressed.
- the expulsion piston 12 by a suitable choice of its shape and of the material is such that after it has been driven out of the medium 10, the nozzle opening 7 essentially completely closes without e.g. to break.
- the expulsion piston can of course be the axis of the expulsion piston 12 also one or more non-axially extending recesses or predetermined breaking points or on its outer Surface be provided with grooves 27, which after collection of the expulsion piston 12 through the area 9 of the nozzle 6 a slow one Allow propellants to escape.
- these grooves 27 also with a predetermined breaking point against the Pipe inner wall to be sealed to completely expel to ensure the medium.
- the area 9 of the nozzle 6 and possibly the foremost region of the inner wall of the tube has 5 grooves, that serve the same purpose.
- the expulsion piston 12 can either be completely separate are introduced into the tube 5 from the propellant charge cartridge 11 or with the rear area of a medium accommodating the medium 10 Cartridge connected, the diameter of the Expulsion piston is to be selected in a suitable manner.
- a single cartridge can also be used both the propellant powder and the medium to be fired as well as the expulsion piston.
- the nozzle can also be used with integrated into the cartridge so that the cleaning of the the nozzle arranged in the pipe mouth is omitted.
- a multiple nozzle body 21 used, in which several similar or dissimilar Nozzles are formed.
- the multiple nozzle body 21 is relative to a holding and adjusting device 30
- the mouth of the tube 5 is kept adjustable.
- the multiple nozzle body can 21 by means of, for example, hydraulically operated Adjustment rods 22 moved forward parallel to the tube axis be until the front end of the tube 5 from the concerned Nozzle 6 'with its opening 24 is completely released.
- the multiple nozzle body 21 can then be for example, hydraulically operated adjustment device 25, so displaced in a plane perpendicular to the pipe axis until another is not deformed by a driven piston 12 added nozzle 6 'positioned in front of the mouth of the tube 5 is.
- the multiple nozzle body 21 is shown in FIG Adjustment rods 22 connected holding elements 23 slidably held.
- the multiple nozzle body 21 through the holding and adjusting device 30 so long in the direction moved towards the mouth of the tube 5 until the tube 5 in intimate Engagement with the opening 24 of the relevant nozzle 6 'is. After the next shot can then be fired immediately.
- the nozzle body 21 can also be several different in each case trained nozzles 6 ', with similar nozzles for example on a vertical line and different Nozzles arranged on a horizontal line in the form of a matrix are. In this case there would be another one, not shown Adjustment device required, which the multiple nozzle body 21 in its plane perpendicular to the direction of adjustment the adjusting device 25 moves.
- the multiple nozzle body 21 and the devices for adjusting it can also be used with other devices for firing a flowable medium, e.g. also in connection with known devices.
- FIG. 3 26 a cleaning device is indicated in FIG. 3 26 shown after moving the multi-nozzle body that of the previous shot in that The nozzle 6 'located deformed expelling piston 12 ejects.
- the cleaning device 26 can have a mandrel, whose outer diameter is essentially the inner diameter of the Corresponds to nozzle opening 7 '.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Nozzles (AREA)
- Coating Apparatus (AREA)
Description
- Fig. 1
- eine schematische Darstellung der erfindungsgemäßen Vorrichtung zum Verschießen eines fließfähigen Mediums und deren Verwendung zur Bodenverfestigung:
- Fig. 2
- Detailzeichnungen des vorderen Bereiches des Rohres der Vorrichtung in Fig. 1;
- Fig. 3
- eine weitere Ausführungsform der Erfindung mit einem Mehrfachdüsenkörper und
- Fig. 4
- einen Austreibkolben im Schnitt bzw. in Draufsicht.
Claims (14)
- Vorrichtung zum Verschießen eines fließfähigen Mediums, insbesondere eines erhärtbaren Baustoffs, mit einem Rohr (5) zur Aufnahme einer Treibladung (13) und des zu verschießenden fließfähigen Mediums (10) und einem zwischen der Treibladung (13) und dem Medium (10) angeordneten, die Bereiche der Treibladung (13) und des Mediums (10) gegeneinander abdichtenden verschiebbaren Austreibkolben (12),
dadurch gekennzeichnet,
daß der Austreibkolben (12) und der Mündungsbereich des Rohres (5) mit der Düse (6) aufeinander abgestimmt sind, derart, daß der Austreibkolben (12) nach dem Austreiben des zu verschießenden Mediums (10) im Mündungsbereich des Rohres (5) aufgefangen wird und die Öffnung (7) der Düse (6) im wesentlichen abgedichtet ist. - Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß an der Rohrmündung eine Düse (6) angeordnet ist, welche als Auffangvorrichtung für den Austreibkolben (12) ausgebildet ist.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Düse (6) einen sich in das Rohrinnere erweiternden Bereich (9) aufweist.
- Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der Austreibkolben (12) derart verformbar ausgebildet ist, daß er nach dem Schuß formschlüssig mit der Innenwandung des Bereiches (9) die Düsenöffnung (7) im wesentlichen abdichtet, wobei ein langsames Entweichen der Treibgase ohne wesentliche Schallemission erfolgt.
- Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß der Austreibkolben (12) zumindest eine durch eine Sollbruchstelle (18) verschlossene Ausnehmung (17) aufweist, wobei die Sollbruchstelle durch das Auffangen des Austreibkolbens (12) in der Düse (6) geöffnet wird und ein langsames Entweichen der Treibgase ohne wesentliche Schallemission erfolgt.
- Vorrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß der Austreibkolben (12) an seiner äußeren Oberfläche zumindest eine durch eine Sollbruchstelle gegenüber der Rohrinnenwand abgedichtete Nut aufweist, wobei die Sollbruchstelle durch das Auffangen des Austreibkolbens (12) in der Düse (6) geöffnet wird und ein langsames Entweichen der Treibgase ohne wesentliche Schallemission erfolgt.
- Vorrichtung nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß in der Innenfläche des Mündungsbereiches des Rohres (5) und/oder des Bereichs (9) der Düse (6) zumindest eine Nut (27) ausgebildet ist, welche nach dem Auffangen des Austreibkolbens (12) in der Düse (6) ein langsames Entweichen der Treibgase ohne wesentliche Schallemission ermöglicht.
- Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Treibladung (13) in eine Hülse (14) gefüllt ist und eine Treibladungskartusche (11) bildet und der Austreibkolben (12) lösbar mit der Kartusche (11) verbunden ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Treibladung (13), das Medium (10) und der Austreibkolben (12) als Patrone ausgebildet sind.
- Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Düse an der Patrone angeordnet ist.
- Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß anstelle einer einzigen Düse (6) an der Rohrmündung ein Mehrfachdüsenkörper (21) mit wenigstens zwei Einzeldüsen (6') angeordnet ist, wobei der Mehrfachdüsenkörper (21) nach jedem Schuß derart gegenüber dem Rohr (5) versetzbar ist, daß eine freie Einzeldüse (6') an der Rohrmündung angeordnet ist.
- Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß der Mehrfachdüsenkörper (21) mittels einer ersten Halte- und Verstellvorrichtung (30) in Richtung der Rohrachse und mittels einer zweiten Verstellvorrichtung (25) in einer zur Rohrachse transversalen Richtung bewegbar ist.
- Vorrichtung nach Anspruch 11 oder 12, dadurch gekennzeichnet, daß eine Vorrichtung (26) zum Reinigen der Düse und/ oder Auswerfen von in den Einzeldüsen (6') befindlichen Austreibkolben (12) vorhanden ist.
- Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, daß die Vorrichtung (26) einen Dorn aufweist, welcher die Einzeldüsen (6') von vorne derart durchstößt, daß der in der Düse befindliche Austreibkolben (12) ausgeworfen wird.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4335472A DE4335472A1 (de) | 1993-10-18 | 1993-10-18 | Vorrichtung zum Verschießen eines flüssigen Mediums, insbesondere eines erhärtbaren Baustoffs |
DE4335472 | 1993-10-18 | ||
PCT/DE1994/001233 WO1995011348A1 (de) | 1993-10-18 | 1994-10-18 | Vorrichtung zum verschiessen eines fliessfähigen mediums, insbesondere eines erhärtbaren baustoffs |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0724671A1 EP0724671A1 (de) | 1996-08-07 |
EP0724671B1 true EP0724671B1 (de) | 1998-03-04 |
Family
ID=6500417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94929486A Expired - Lifetime EP0724671B1 (de) | 1993-10-18 | 1994-10-18 | Vorrichtung zum verschiessen eines fliessfähigen mediums, insbesondere eines erhärtbaren baustoffs |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0724671B1 (de) |
AT (1) | ATE163703T1 (de) |
DE (2) | DE4335472A1 (de) |
WO (1) | WO1995011348A1 (de) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1889599A (en) * | 1930-05-10 | 1932-11-29 | John B Goldsborough | Method of filling voids in soil |
US2718264A (en) * | 1951-07-25 | 1955-09-20 | Exxon Research Engineering Co | Method of squeeze cementing in cased boreholes |
US3324665A (en) * | 1964-10-28 | 1967-06-13 | Shell Oil Co | Method of stabilizing piles |
US4047580A (en) * | 1974-09-30 | 1977-09-13 | Chemical Grout Company, Ltd. | High-velocity jet digging method |
DE2907759C2 (de) * | 1979-02-28 | 1982-06-16 | Bergwerksverband Gmbh, 4300 Essen | Vorrichtung zum Entrosten, Reinigen und Lösen oder Zerstören von Verbindungselementen |
DE3300971A1 (de) * | 1983-01-13 | 1984-07-19 | Stump Bohr Gmbh, 8045 Ismaning | Verfahren zum herstellen von verfestigten oder verdichteten zonen bzw. loechern im erdreich, sowie vorrichtung zur ausfuehrung des verfahrens |
US4630972A (en) * | 1984-10-29 | 1986-12-23 | Utilitech, Incorporated | Impulse injector apparatus |
US5026216A (en) * | 1988-03-31 | 1991-06-25 | Yoshinobu Koiwa | Shaft construction method |
-
1993
- 1993-10-18 DE DE4335472A patent/DE4335472A1/de not_active Withdrawn
-
1994
- 1994-10-18 EP EP94929486A patent/EP0724671B1/de not_active Expired - Lifetime
- 1994-10-18 AT AT94929486T patent/ATE163703T1/de not_active IP Right Cessation
- 1994-10-18 WO PCT/DE1994/001233 patent/WO1995011348A1/de active IP Right Grant
- 1994-10-18 DE DE59405407T patent/DE59405407D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0724671A1 (de) | 1996-08-07 |
DE59405407D1 (de) | 1998-04-09 |
ATE163703T1 (de) | 1998-03-15 |
DE4335472A1 (de) | 1995-04-20 |
WO1995011348A1 (de) | 1995-04-27 |
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