EP1342917B1 - Pump for aggressive liquids - Google Patents
Pump for aggressive liquids Download PDFInfo
- Publication number
- EP1342917B1 EP1342917B1 EP03010547A EP03010547A EP1342917B1 EP 1342917 B1 EP1342917 B1 EP 1342917B1 EP 03010547 A EP03010547 A EP 03010547A EP 03010547 A EP03010547 A EP 03010547A EP 1342917 B1 EP1342917 B1 EP 1342917B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- valve
- piston
- bore
- piston pumps
- 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
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
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/0038—Piston machines or pumps characterised by having positively-driven valving the distribution member forming a single inlet for a plurality of pumping chambers or a multiple discharge for one single pumping chamber
-
- 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
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/04—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being hot or corrosive
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Definitions
- the invention relates to a pumping device for aggressive liquids, especially liquid metals, eg. As lead or aluminum with several Piston dosing pumps and a pump housing with a Pump bottom, wherein the pump bottom has at least one valve, this in conjunction with several channels arranged in the bottom of the pump stands, wherein the pump bottom has a plurality of disc-like segments, wherein the individual segments to form the channels with each other connected grooves and bores, wherein the piston metering pumps are connected by a common pressure tube.
- liquid metals eg. As lead or aluminum with several Piston dosing pumps
- the pump bottom has at least one valve, this in conjunction with several channels arranged in the bottom of the pump stands, wherein the pump bottom has a plurality of disc-like segments, wherein the individual segments to form the channels with each other connected grooves and bores, wherein the piston metering pumps are connected by a common pressure tube.
- the invention is therefore based on the object, a pumping device of educate the aforementioned type such that hereby an exactly metered delivery of the liquid can be done.
- Another advantage of the separate drive for each pump is in that hereby also the promotion can be made uniform.
- the piston metering pumps of the pumping device a common housing, wherein the housing has a common Pressure channel for the piston metering pumps has. That is, at two parallel piston metering pumps in a pumping device, the piston metering pumps each a separate feed for the pumped Having casting medium, but a single output for the subsidized Medium. In particular, this is the continuous promotion of the Casting medium ensured in the mold.
- the piston pump designated overall by 1 shows the cylinder 2 and arranged in the cylinder designated 3 Piston.
- the bottom of the cylinder is generally designated 10.
- the floor 10 consists of the three disc-shaped segments 20, 30 and 40, the are interconnected by screws 70, as this is for example, from Figure 2 results.
- the disk-shaped segment 20 has a bore 21, with which the Pump bottom is in communication with the interior of the cylinder 2. Of Further, the segment 20 has a bore 22 which in the 25, 35 designated valve chamber opens. The valve chamber 25, 35 has in the region of Output of the bore 22, the valve seat 23.
- the disc-shaped segment 30th shows a horizontally extending groove 31 which fits to the bore 21 of disc-shaped segment 20 connects, and also in the valve chamber 25, 35 opens. At the valve chamber 25, 35 closes down again a bore 32, which has the valve seat 33. Close to the bore 32 a turn horizontally extending groove 41 in the disk-shaped Segment 40, which terminates in the pressure tube designated 50.
- This Pressure tube 50 is T-shaped in its arranged at the pump bottom end (at 55), whereby it in the region of the segments 20 and 30 by a corresponding recess 37 in the segment 30 and 27 in the segment 20 is received positively.
- the pressure tube 50 can be heated designed to melt without lowering the temperature in the mold to be able to bring.
- valve In the region of the valve space 25, 35 is the valve designated 60 with the valve body 61 and the valve rod 62.
- the valve body 61 cooperates with the valve seats 23 and 33 together.
- the piston metering pump can be used as a submersible pump, with the inlet taking place through the annular gap between the bore 22 and the valve rod 62 into the valve housing 25, 35.
- the bore 32 In the case of the inlet, the bore 32 is shut off by the valve body 61 through the valve body 61.
- D. h. The liquid passes through the bore 22, the channel 31 and the bore 21 into the cylinder 2. With a corresponding downward movement of the piston 3, the liquid is when the valve body rests against the upper valve seat 23, through the bore 21st , the channel 31, the bore 32 and the channel 41 passed into the pressure tube 50.
- the disc-shaped segments 20, 30, 40 and also the pressure tube 50 are preferably made of a ceramic or according to coated to counteract the wear by the liquid metal.
- FIG. 5 In the illustration according to FIG. 5 and according to the sections according to FIG Figures 6 to 8 is a pumping device with two piston metering pumps shown.
- the arrangement of the two piston metering pumps 1 in the Pumping device is parallel, but each one designated 1 Piston pump a separate drive (not shown) shows.
- a piston metering pump according to the figures 1 to 4 referred only to the Bottom of the pumping device with the two piston metering pumps something is different the pump bottom 100 of the pumping device consists from the six segments 110, 120, 130, 140, 150 and 160. Again, the disc-shaped segments 110 to 160 held by screws 70, such as this results from the sectional views according to FIGS. 6 to 8.
- the disc-shaped segment 110 has two holes 111, with the Pump bottom with the respective interior of the cylinder 2 in conjunction stands. Furthermore, the segment 110 has two holes 112, which in the With 135 designated valve chamber open. The valve space 135 points in the area the output of the bore 112, the valve seat 123.
- the disc-shaped Segment 130 has a horizontally extending groove 131 which in conjunction with the bore 111 is. In the area of the disk-shaped segment 140 In turn, there is a respective hole 141 with a corresponding Valve seat 142.
- a valve 180th provided with the valve body 181 and the valve rod 182nd Der Valve body works with the respective valve seats 123, 142 together.
- the disk-shaped segment 150 shows a long groove 190, which is finally in communication with the pressure tube 50. Finally, the disc-shaped segment 160 forms the conclusion of the Soil 100.
- the operation of this pumping device is essentially equal to that of Figure 1 - 4, so that in detail not discussed must become.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Description
Die Erfindung betrifft eine Pumpeinrichtung für aggressive Flüssigkeiten, insbesondere flüssige Metalle, z. B. Blei oder Aluminium mit mehreren Kolben-Dosierpumpen und einem Pumpengehäuse mit einem Pumpenboden, wobei der Pumpenboden mindestens ein Ventil aufweist, das mit mehreren im Pumpenboden angeordneten Kanälen in Verbindung steht, wobei der Pumpenboden mehrere scheibenartige Segmente aufweist, wobei die einzelnen Segmente zur Bildung der Kanäle untereinander verbundene Nuten und Bohrungen aufweisen, wobei die Kolben-Dosierpumpen durch ein gemeinsames Druckrohr verbunden sind.The invention relates to a pumping device for aggressive liquids, especially liquid metals, eg. As lead or aluminum with several Piston dosing pumps and a pump housing with a Pump bottom, wherein the pump bottom has at least one valve, this in conjunction with several channels arranged in the bottom of the pump stands, wherein the pump bottom has a plurality of disc-like segments, wherein the individual segments to form the channels with each other connected grooves and bores, wherein the piston metering pumps are connected by a common pressure tube.
Es ist bekannt, dass flüssige Metalle, und hier insbesondere flüssiges Blei und flüssiges Aluminium, äußerst aggressiv sind. Aus der EP 610708 ist daher bereits bekannt, eine Kolben-Dosierpumpe bereitzustellen, bei der Kolben und Zylinder aus einem keramischen Material, z. B. Siliziumnitrit, hergestellt sind. Der Verschleiß einer derartigen Pumpe konnte gegenüber herkömmlichen Pumpen durch den Einsatz solcher keramischer Materialien erheblich reduziert werden. D. h., dass die eigentliche Pumpe mit Kolben und Zylinder durchaus eine Verschleißfestigkeit aufweist, die annehmbar ist.It is known that liquid metals, and in particular liquid lead and liquid aluminum, are extremely aggressive. From EP 610708 is Therefore, already known to provide a piston metering pump, wherein Piston and cylinder made of a ceramic material, eg. B. silicon nitrite, are made. The wear of such a pump could be compared to conventional pumps through the use of such ceramic materials be significantly reduced. D. h., That the actual pump with piston and Cylinder certainly has a wear resistance that is acceptable.
Problematisch bei einer derartigen Pumpe ist jedoch, dass hiermit eine kontinuierliche Förderung der z. B. flüssigen Schmelze nicht möglich ist.The problem with such a pump, however, is that hereby a continuous promotion of z. B. liquid melt is not possible.
Aus der US-A 5,013,219 ist eine Kolben-Dosierpumpe der eingangs genannten Art für aggressive Flüssigkeiten bekannt. Nachteilig hierbei ist jedoch, dass die Förderungsmenge der Flüssigkeit nicht genau genug gesteuert werden kann. From US-A 5,013,219 a piston metering pump is the beginning mentioned type for aggressive fluids. The disadvantage here is however, that the delivery rate of the liquid is not accurate enough can be controlled.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Pumpeinrichtung der eingangs genannten Art derart weiterzubilden, dass hiermit eine genau dosierte Förderung der Flüssigkeit erfolgen kann.The invention is therefore based on the object, a pumping device of educate the aforementioned type such that hereby an exactly metered delivery of the liquid can be done.
Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruches 1
gelöst. Ein weiterer Vorteil des gesonderten Antriebs für jede Pumpe besteht
darin, dass hiermit auch die Förderung vergleichmäßigt werden kann.The object is achieved by the features of
Eine weitere Optimierung hinsichtlich der kontinuierlichen Förderung findet insbesondere durch die Parallelanordnung mehrerer derartiger Kolben-Dosierpumpen statt, da die Kolben im Wechseltakt arbeiten, d. h. während der eine Kolben ansaugt, stößt der andere aus. Bei der Beschickung von Gießformen hat dies den Vorteil, dass die Temperatur in der Gießform während des Gießvorganges im Wesentlichen konstant bleibt, da ein kontinuierlicher Fluss des Gießmediums gewährleistet ist. Infolgedessen ergibt sich auch keine Temperaturabsenkung während des Gießvorganges mit der damit einhergehenden Oxydation des Gießmediums. D. h. es erfolgt eine im Wesentlichen schonende Behandlung der Schmelze, was sich durchaus vorteilhaft in Bezug auf die Qualität des Endproduktes auswirkt.Further optimization with regard to continuous promotion finds in particular by the parallel arrangement of several such piston metering pumps instead, since the pistons are operating in alternating cycle, d. H. while one sucks a piston, the other expels. When loading from Molds this has the advantage that the temperature in the mold remains substantially constant during the casting process, as a continuous flow of the casting medium is ensured. Consequently There is also no drop in temperature during the casting process with the associated oxidation of the casting medium. Ie. it takes place a substantially gentle treatment of the melt, resulting in quite advantageous in terms of the quality of the final product.
Insbesondere auch zur Vermeidung von übermäßigen Wärmeverlusten ist vorgesehen, dass die Kolben-Dosierpumpen der Pumpeinrichtung ein gemeinsames Gehäuse aufweisen, wobei das Gehäuse einen gemeinsamen Druckkanal für die Kolben-Dosierpumpen aufweist. D. h., dass bei zwei parallelen Kolben-Dosierpumpen in einer Pumpeinrichtung die Kolben-Dosierpumpen jeweils eine gesonderte Zuführung für das zu pumpende Gießmedium aufweisen, jedoch einen einzigen Ausgang für das geförderte Medium. Insbesondere auch hierdurch wird die kontinuierliche Förderung des Gießmediums in die Form gewährleistet.In particular, to avoid excessive heat loss is provided that the piston metering pumps of the pumping device a common housing, wherein the housing has a common Pressure channel for the piston metering pumps has. That is, at two parallel piston metering pumps in a pumping device, the piston metering pumps each a separate feed for the pumped Having casting medium, but a single output for the subsidized Medium. In particular, this is the continuous promotion of the Casting medium ensured in the mold.
Anhand der Zeichnungen wird die Erfindung nachstehend beispielhaft näher erläutert .
Figur 1- zeigt eine Kolben-Dosierpumpe in einer Seitenansicht schematisch im Schnitt;
Figur 2- zeigt einen Schnitt gemäß der Linie II/II aus
Figur 1; Figur 3- zeigt einen Schnitt gemäß der Linie III/III aus
Figur 1; - Figur 4
- zeigt einen Schnitt gemäß der Linie IV/IV aus Figur 1:
- Figur 5
- zeigt eine parallele Anordnung zweier Kolben-Dosierpumpen in einem gemeinsamen Gehäuse als Pumpeinrichtung im Schnitt;
- Figuren 6-8
- zeigen Schnitte des Bodens gemäß der Pumpeinrichtung aus Figur 5
- FIG. 1
- shows a piston metering pump in a side view schematically in section;
- FIG. 2
- shows a section along the line II / II of Figure 1;
- FIG. 3
- shows a section along the line III / III of Figure 1;
- FIG. 4
- shows a section along the line IV / IV of Figure 1:
- FIG. 5
- shows a parallel arrangement of two piston metering pumps in a common housing as a pumping device in section;
- Figures 6-8
- show sections of the bottom according to the pumping device of Figure 5
Wie aus Figur 1 erkennbar, zeigt die insgesamt mit 1 bezeichnete Kolbenpumpe
den Zylinder 2 und den im Zylinder angeordneten mit 3 bezeichneten
Kolben. Der Boden des Zylinders ist insgesamt mit 10 bezeichnet. Der Boden
10 besteht aus den drei scheibenförmigen Segmenten 20, 30 und 40, die
untereinander durch Schrauben 70 verbunden sind, wie sich dies
beispielsweise aus Figur 2 ergibt.As can be seen from FIG. 1, the piston pump designated overall by 1 shows
the
Das scheibenförmige Segment 20 zeigt eine Bohrung 21 auf, mit der der
Pumpenboden mit dem Innenraum des Zylinders 2 in Verbindung steht. Des
weiteren besitzt das Segment 20 eine Bohrung 22, die in den mit 25, 35
bezeichneten Ventilraum mündet. Der Ventilraum 25, 35 besitzt im Bereich des
Ausgangs der Bohrung 22 den Ventilsitz 23. Das scheibenförmige Segment 30
zeigt eine horizontal verlaufende Nut 31, die sich an die Bohrung 21 des
scheibenförmigen Segments 20 anschließt, und die ebenfalls in den Ventilraum
25, 35 mündet. An den Ventilraum 25, 35 schließt sich nach unten wiederum
eine Bohrung 32 an, die den Ventilsitz 33 aufweist. An die Bohrung 32 schließt
sich eine wiederum horizontal verlaufende Nut 41 im scheibenförmigen
Segment 40 an, die in dem mit 50 bezeichneten Druckrohr endet. Dieses
Druckrohr 50 ist in seinem am Pumpenboden angeordneten Ende T-förmig (bei
55) ausgebildet, wodurch es im Bereich der Segmente 20 und 30 durch eine
entsprechende Ausnehmung 37 in dem Segment 30 sowie 27 in dem Segment
20 formschlüssig aufgenommen ist. Vorteilhaft ist das Druckrohr 50 beheizbar
ausgebildet, um die Schmelze ohne Temperaturerniedrigung in die Gießform
bringen zu können.The disk-
Im Bereich des Ventilraumes 25, 35 befindet sich das mit 60 bezeichnete Ventil
mit dem Ventilkörper 61 und der Ventilstange 62. Der Ventilkörper 61 arbeitet
mit den Ventilsitzen 23 und 33 zusammen.
Die Kolben-Dosierpumpe ist als Tauchpumpe einsetzbar, wobei der Einlass
durch den ringförmigen Spalt zwischen der Bohrung 22 und der Ventilstange 62
in das Ventilgehäuse 25, 35 stattfindet. Im Falle des Einlasses wird durch den
Ventilkörper 61 die Bohrung 32 durch den Ventilkörper 61 abgesperrt. D. h., die
Flüssigkeit gelangt durch die Bohrung 22, den Kanal 31 und die Bohrung 21 in
den Zylinder 2. Bei entsprechender Abwärtsbewegung des Kolbens 3 wird die
Flüssigkeit dann, wenn der Ventilkörper an dem oberen Ventilsitz 23 anliegt,
durch die Bohrung 21, den Kanal 31, die Bohrung 32 und den Kanal 41 in das
Druckrohr 50 geleitet.In the region of the
The piston metering pump can be used as a submersible pump, with the inlet taking place through the annular gap between the
Die scheibenförmigen Segmente 20, 30, 40 und auch das Druckrohr 50 sind
vorzugsweise aus einer Keramik hergestellt oder aber entsprechend
beschichtet, um dem Verschleiß durch das Flüssigmetall entgegenzuwirken.The disc-shaped
Bei der Darstellung gemäß der Figur 5 und entsprechend den Schnitten gemäß
den Figuren 6 bis 8 ist eine Pumpeinrichtung mit zwei Kolben-Dosierpumpen
dargestellt. Die Anordnung der beiden Kolben-Dosierpumpen 1 in der
Pumpeinrichtung ist parallel, wobei jedoch jede einzelne mit 1 bezeichnete
Kolbenpumpe einen gesonderten Antrieb (nicht dargestellt) zeigt. Für die
folgende Betrachtung wird in Bezug auf gleiche Teile auf die Ausführungsform
einer Kolben-Dosierpumpe gemäß den Figuren 1 bis 4 verwiesen Lediglich der
Boden der Pumpeinrichtung mit den beiden Kolben-Dosierpumpen
unterscheidet sich etwas; der Pumpenboden 100 der Pumpeinrichtung besteht
aus den sechs Segmenten 110, 120, 130, 140, 150 und 160. Auch hier sind die
scheibenförmigen Segmente 110 bis 160 durch Schrauben 70 gehalten, wie
sich dies aus den Schnittdarstellungen gemäß den Figuren 6 bis 8 ergibt. Das
scheibenförmige Segment 110 zeigt zwei Bohrungen 111 auf, mit der der
Pumpenboden mit dem jeweiligen Innenraum des Zylinders 2 in Verbindung
steht. Des Weiteren besitzt das Segment 110 zwei Bohrungen 112, die in den
mit 135 bezeichneten Ventilraum münden. Der Ventilraum 135 zeigt im Bereich
des Ausgangs der Bohrung 112 den Ventilsitz 123. Das scheibenförmige
Segment 130 weist eine horizontal verlaufend Nut 131 auf, die in Verbindung
mit der Bohrung 111 steht. Im Bereich des scheibenförmigen Segmentes 140
befindet sich wiederum jeweils eine Bohrung 141 mit einem entsprechenden
Ventilsitz 142. Für die beiden Kolben-Dosierpumpen ist jeweils ein Ventil 180
vorgesehen mit dem Ventilkörper 181 und der Ventilstange 182. Der
Ventilkörper arbeitet hierbei mit den jeweiligen Ventilsitzen 123, 142
zusammen. Das scheibenförmige Segment 150 zeigt eine lang verlaufende Nut
190, die schlussendlich mit dem Druckrohr 50 in Verbindung steht.
Schlussendlich bildet das scheibenförmige Segment 160 den Abschluss des
Bodens 100. Die Funktionsweise dieser Pumpeinrichtung ist im Wesentlichen
gleich der der Figur 1 - 4, so dass hierauf im einzelnen nicht mehr eingegangen
werden muss.In the illustration according to FIG. 5 and according to the sections according to FIG
Figures 6 to 8 is a pumping device with two piston metering pumps
shown. The arrangement of the two piston metering pumps 1 in the
Pumping device is parallel, but each one designated 1
Piston pump a separate drive (not shown) shows. For the
The following consideration will be made to the embodiment with respect to like parts
a piston metering pump according to the figures 1 to 4 referred only to the
Bottom of the pumping device with the two piston metering pumps
something is different the
Claims (3)
- A pump device for aggressive liquids, more specifically for liquid metals such as lead or aluminium, with a plurality of metering piston pumps and a pump housing with a pump bottom (10), said pump bottom (10) comprising a valve (60) that communicates with a plurality of channels disposed in the pump bottom, said pump bottom (10) comprising a plurality of disk-like segments (20, 30, 40), said discrete segments (20, 30, 40) comprising intercommunicating grooves and holes (21, 22, 31, 41) for forming the channels, said metering piston pumps being connected through a common pressure tube,
characterized in that each metering dosing pump (1) comprises a separate drive. - The pump device as set forth in claim 1,
characterized in that the metering piston pumps (1) are arranged parallel to each other. - The pump device as set forth in claim 1,
characterized in that the metering piston pumps (1) of the pump device comprise a common housing.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29906403U | 1999-04-10 | ||
| DE29906403 | 1999-04-10 | ||
| DE20001099U DE20001099U1 (en) | 1999-04-10 | 2000-01-22 | Piston metering pump for aggressive liquids |
| DE20001099U | 2000-01-22 | ||
| EP00926706A EP1171709B1 (en) | 1999-04-10 | 2000-04-10 | Piston metering pump for aggressive liquids |
Related Parent Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00926706.3 Division | 2000-04-10 | ||
| EP00926706A Division EP1171709B1 (en) | 1999-04-10 | 2000-04-10 | Piston metering pump for aggressive liquids |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1342917A1 EP1342917A1 (en) | 2003-09-10 |
| EP1342917B1 true EP1342917B1 (en) | 2005-11-02 |
Family
ID=8072029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03010547A Expired - Lifetime EP1342917B1 (en) | 1999-04-10 | 2000-04-10 | Pump for aggressive liquids |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1342917B1 (en) |
| DE (2) | DE20001099U1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH625439A5 (en) * | 1977-10-07 | 1981-09-30 | Injecta Ag | |
| GB2013776B (en) * | 1977-12-24 | 1982-03-31 | Lucas Industries Ltd | Metering pump |
| US4758135A (en) * | 1986-12-30 | 1988-07-19 | Weatherford U.S., Inc. | Pump head |
| US5014219A (en) | 1988-05-06 | 1991-05-07 | White James A | Mask controled neural networks |
| US5013219A (en) * | 1989-02-09 | 1991-05-07 | The University Of Delaware | Positive displacement piston pump |
| JPH0539775A (en) * | 1991-08-05 | 1993-02-19 | Kubota Corp | Ceramics pump for molten metal of non-ferrous metal |
| US5181551A (en) * | 1991-09-25 | 1993-01-26 | Electrovert Ltd. | Double acting cylinder for filling dies with molten metal |
| DE4303759C2 (en) | 1993-02-09 | 1997-05-15 | Eberhard Maucher | Dosing pump |
-
2000
- 2000-01-22 DE DE20001099U patent/DE20001099U1/en not_active Expired - Lifetime
- 2000-04-10 EP EP03010547A patent/EP1342917B1/en not_active Expired - Lifetime
- 2000-04-10 DE DE50004501T patent/DE50004501D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE20001099U1 (en) | 2000-08-17 |
| DE50004501D1 (en) | 2003-12-24 |
| EP1342917A1 (en) | 2003-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE4136828C2 (en) | Flow divider pump | |
| DE2821801A1 (en) | VALVE ARRANGEMENT WITH A DIAPHRAGM VALVE | |
| DE3532602C2 (en) | Flow control valve | |
| EP1342917B1 (en) | Pump for aggressive liquids | |
| DE19802461A1 (en) | Coolant compressor | |
| DE2504562B2 (en) | Hydrostatic axial piston pump | |
| EP1171709A1 (en) | Piston metering pump for aggressive liquids | |
| DE69018831T2 (en) | SUCTION VALVE FOR A PUMP TO COLLECT IMPURITIES. | |
| DE2426958A1 (en) | PISTON DESIGNED FOR A PRESSURE MECHANISM MECHANISM ACTING AS A MOTOR OR PUMP | |
| DE384924C (en) | Control device | |
| DE3806015A1 (en) | CONTROL ARRANGEMENT FOR CONTROLLING THE INTERNAL VOLUME OF A ROTATIONAL COMPRESSOR | |
| EP0476450B1 (en) | Axial piston pump, particularly for water high-pressure cleaner | |
| DE3427660C2 (en) | ||
| DE19833504C2 (en) | Plastic melt gun | |
| DE1703210A1 (en) | Hydraulic machine that can be used as a pump or motor | |
| DE3542648C2 (en) | ||
| DE3887150T2 (en) | Hydraulic multi-stage synchronous pump. | |
| DE884129C (en) | Fuel injection pump | |
| DE8912797U1 (en) | Radial piston pump | |
| DE102010005984B4 (en) | Usually oil pump | |
| DE3401693A1 (en) | VALVE, IN PARTICULAR FOR USE IN FILLING DEVICES | |
| DE510858C (en) | Pump, in particular for rayon spinning machines, in which the pistons are guided in radially arranged cylindrical bores distributed around a circulating body | |
| DE3781512T2 (en) | HYDRAULIC VALVE FOR STEERING DEVICES. | |
| DE202009000243U1 (en) | Flow adjusting screw | |
| DE2028408A1 (en) | Injection moulding machine - with a screw carrying a piston |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AC | Divisional application: reference to earlier application |
Ref document number: 1171709 Country of ref document: EP Kind code of ref document: P |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| 17P | Request for examination filed |
Effective date: 20040303 |
|
| AKX | Designation fees paid |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| 17Q | First examination report despatched |
Effective date: 20040708 |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: FCT INGENIEURKERAMIK GMBH |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: DER ERFINDER HAT AUF SEINE NENNUNG VERZICHTET. |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MAUCHER, EBERHARD |
|
| AC | Divisional application: reference to earlier application |
Ref document number: 1171709 Country of ref document: EP Kind code of ref document: P |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20051102 Ref country code: GB Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20051102 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20051102 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20051102 Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20051102 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REF | Corresponds to: |
Ref document number: 50011527 Country of ref document: DE Date of ref document: 20051208 Kind code of ref document: P |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: R. A. EGLI & CO. PATENTANWAELTE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060202 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060202 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060202 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060213 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060403 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060410 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060430 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060430 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060430 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060430 |
|
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| GBV | Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed] |
Effective date: 20051102 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20060803 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20061101 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| EN | Fr: translation not filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20061222 |
|
| BERE | Be: lapsed |
Owner name: FCT INGENIEURKERAMIK G.M.B.H. Effective date: 20060430 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060410 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20051102 Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20051102 |