EP1086312B1 - Piston-type accumulator for a hydraulic fluid to be supplied to a consumer in a hydraulic installation - Google Patents

Piston-type accumulator for a hydraulic fluid to be supplied to a consumer in a hydraulic installation Download PDF

Info

Publication number
EP1086312B1
EP1086312B1 EP99927842A EP99927842A EP1086312B1 EP 1086312 B1 EP1086312 B1 EP 1086312B1 EP 99927842 A EP99927842 A EP 99927842A EP 99927842 A EP99927842 A EP 99927842A EP 1086312 B1 EP1086312 B1 EP 1086312B1
Authority
EP
European Patent Office
Prior art keywords
piston
tappet
cylinder
control valve
type accumulator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99927842A
Other languages
German (de)
French (fr)
Other versions
EP1086312A1 (en
Inventor
Josef Scholl
Herbert Baltes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hydac Technology GmbH
Original Assignee
Hydac Technology GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7871409&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1086312(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hydac Technology GmbH filed Critical Hydac Technology GmbH
Publication of EP1086312A1 publication Critical patent/EP1086312A1/en
Application granted granted Critical
Publication of EP1086312B1 publication Critical patent/EP1086312B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D7/00—Hopper cars
    • B61D7/14—Adaptations of hopper elements to railways
    • B61D7/16—Closure elements for discharge openings
    • B61D7/24—Opening or closing means
    • B61D7/28—Opening or closing means hydraulic or pneumatic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/027—Installations or systems with accumulators having accumulator charging devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/24—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with rigid separating means, e.g. pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/205—Accumulator cushioning means using gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/41—Liquid ports
    • F15B2201/411—Liquid ports having valve means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/415—Gas ports
    • F15B2201/4155—Gas ports having valve means

Definitions

  • the invention relates to a piston accumulator for a consumer in one Hydraulic system pressure fluid to be supplied, in particular for hydraulic Actuation of the unloading device with not self-propelled Vehicles for bulk goods, with one flying in a cylinder, dividing the cylinder into an oil space and a gas space Piston, connections provided on the oil space for supply of the charging fluid flow and discharge of the working fluid flow, one axially in the cylinder movable shift plunger, which with its inner end with the piston cooperates and with its outer end in the gas space delimiting Cylinder cover is guided, and with a shutdown device for the switching fluid serving the charging fluid flow, which via a switchable Bypassing the bypass pipeline serving with the piston accumulator the connection for the charging fluid flow connected to the oil space and through the outer end of the switching plunger is actuated, which is sealed by the Cylinder cover led outwards and on the outside of the cylinder as Actuator for the switching valve is accessible, which one at the The outside of the cylinder cover forms a detachably
  • a piston accumulator of this type is known, which for Operation of the bulk material unloading device provided for railway wagons is.
  • the hydraulic system provided in such wagons has at least one hydraulic pump driven by a relevant wheel set on a charging fluid flow during the movement of the wagon pumps into the piston accumulator If the set operating pressure in the When memory reaches, the shutdown device causes the charging fluid flow via the bypass pipeline to the tank connection of the hydraulic system is diverted and thus flows into the fluid reservoir.
  • the invention has for its object a piston accumulator of said To create kind that stands out in a compact design by a special distinguishes good operating behavior.
  • This inner guidance opens up the possibility of defining the gas space Form part of the cylinder in a considerable length, which is achieved that the volume of the gas space within the piston accumulator very large compared to the piston displacement in the oil chamber can be.
  • This has the particular advantage that it covers the entire area Working stroke of the piston resulting pressure difference despite compact design the memory remains relatively small, which for the safe Operation of the hydraulic system in question, i.e. in the special case of the bulk material unloading device, is particularly cheap.
  • the cylinder of a piston accumulator is designated by 1, the interior of which is divided into an oil chamber 5 and a gas chamber 7 by an overhung separating piston 3.
  • Fig. 2 shows the piston 3 in its end position against the cylinder base 9, which corresponds to the operating state in which the oil chamber 5 is not charged by a supplied charging fluid flow, the volume of the oil chamber 5 under the influence of the compressed gas in the gas chamber 7 (at Embodiment N 2 ) is therefore practically reduced to zero by moving the piston 3.
  • the cylinder base 9 For the supply of the charging fluid flow to the oil space 5, the cylinder base 9 a port 11 to which the pressure fluid from the associated Hydraulic pump 13 can be fed via a check valve 15.
  • a second Connection 17 on the cylinder base 9 enables the working fluid flow to be removed via a check valve 19 to the consumer concerned, i.e. in the special case mentioned to the working cylinder of the assigned Bulk unloading.
  • One on the check valve 15 with the Connection 11 on the oil chamber 5 connecting bypass pipeline 21 forms a bridging of the piston accumulator for the charging fluid stream and forms in cooperation with one with the pipeline 21 connected, interacting with the check valve 69
  • Switching valve 23 a switch-off device for the charging fluid flow.
  • a switching plunger 25 is in the form of an actuator for the switching valve 23 a relatively long round rod in the cylinder 1 axially displaceable.
  • the Switch plunger 25 is by the spring force of a spring assembly, which at embodiment shown by a plate spring assembly 33 (see in particular Fig. 3) is formed for its advanced against the separating piston 3 Biased end position, which is shown in Fig. 2, in which the Switch plunger 25 with its relevant end 35 via the partition 29 protrudes by a distance that the actuating path of the actuator 37 of the switching valve 23 is adapted.
  • the partition 29 forms a mechanical one Stop for limiting the flow of fluid through the charge effected lifting movement of the separating piston 3, which is in contact with the Partition 29 in cooperation with the end 35 of the switching plunger 25 this against the spring force of the plate spring assembly 33 for actuating the Switching valve 23 moves (in Fig. 2 to the right).
  • the partition extends 29 opposite, outer end of the switching plunger 25 by a closure of the gas space 7 screwed into the relevant end of the cylinder 1 Cylinder cover 39 through, with a set of seals 41 for Formation of a seal against the bore 45 of the cylinder cover 39 cooperates with a tapered section 43 of the switching plunger 25.
  • This tapered section 43 extends through a dirt deflector 47 into an extension 49 of the bore 45 into which the Switch plunger 25 to form a shoulder surface 51 in a diameter passes even further tapered, end-side shaft portion 53.
  • the extension 49 takes the plate spring assembly 33 surrounding the shaft part 53 on the one hand on the shoulder surface 51 of the switching plunger 25 and on the other hand, in an internal thread 55 of the bore extension 49 screwed threaded sleeve 57 supports.
  • Fig. 2 filling valve can be seen for the supply of the compressed gas to the gas space 7 designated 59.
  • the end of the shaft part forms 53 of the switching plunger 25, a coupling member 61 for the articulated connection with the actuator 37 of the switching valve 23.
  • a commercial directional control valve of the slide type which as removable unit can be unscrewed directly from a base plate 72 is that via a holding frame 63 and a screw 65 with the Cylinder cover 30 is connected.
  • the bypass pipeline 21 with the switching valve 23 connected which when actuated, i.e. when the switching plunger 23 Actuator 37 moves against the acting spring force (in the drawing to the right), the charge pressure of the oil space prevailing in the pipeline 21 5 connects to a control line 67.
  • the Control line 67 becomes hydraulic connected to it unlockable check valve 69 unlocked.
  • the check valve 69 is like this switched that it is in the unlocked state upstream of it
  • Throttle 70 provides fluid communication from the bypass pipe 21 to the Tank connection 71 releases.

Abstract

A piston accumulator can be used for hydraulically actuating the discharge unit in non-automotive bulk commodity vehicles. The accumulator cylinder has a tappet which can be axially displaced within the cylinder. When a defined load pressure is reached in the oil chamber of the cylinder, the tappet can be displaced by a piston to actuate a control valve. The valve serves as shut-off device for the loading fluid stream flowing to the oil chamber and is positioned as a detachable module on the exterior face of cylinder cover in such a way that it can be actuated by the outer end of the tappet. The tappet is guided towards the outside by passing in a sealed manner through the cylinder cover.

Description

Die Erfindung betrifft einen Kolbenspeicher für einem Verbraucher in einer Hydraulikanlage zuzuführendes Druckfluid, insbesondere zur hydraulischen Betätigung der Entladeeinrichtung bei nicht mit Eigenantrieb versehenen Fahrzeugen für Schüttgüter, mit einem in einem Zylinder fliegend angeordneten, den Zylinder in einen Ölraum und einen Gasraum unterteilenden Kolben, am Ölraum vorgesehenen Anschlüssen für Zufuhr des Lade-Fluidstromes und Abfuhr des Arbeits-Fluidstromes, einem im Zylinder axial beweglichen Schaltstößel, der mit seinem inneren Ende mit dem Kolben zusammenwirkt und mit seinem äußeren Ende im den Gasraum begrenzenden Zylinderdeckel geführt ist, und mit einem als Abschalteinrichtung für den Lade-Fluidstrom dienenden Schaltventil, das über eine als schaltbare Überbrückung des Kolbenspeichers dienende Umgehungs-Rohrleitung mit dem Anschluß für den Lade-Fluidstrom am Ölraum verbunden und durch das äußere Ende des Schaltstößels betätigbar ist, das unter Abdichtung durch den Zylinderdeckel nach außen geführt und an der Außenseite des Zylinders als Betätigungsglied für das Schaltventil zugänglich ist, welches eine an der Außenseite des Zylinderdeckels abnehmbar anbringbare Baueinheit bildet.The invention relates to a piston accumulator for a consumer in one Hydraulic system pressure fluid to be supplied, in particular for hydraulic Actuation of the unloading device with not self-propelled Vehicles for bulk goods, with one flying in a cylinder, dividing the cylinder into an oil space and a gas space Piston, connections provided on the oil space for supply of the charging fluid flow and discharge of the working fluid flow, one axially in the cylinder movable shift plunger, which with its inner end with the piston cooperates and with its outer end in the gas space delimiting Cylinder cover is guided, and with a shutdown device for the switching fluid serving the charging fluid flow, which via a switchable Bypassing the bypass pipeline serving with the piston accumulator the connection for the charging fluid flow connected to the oil space and through the outer end of the switching plunger is actuated, which is sealed by the Cylinder cover led outwards and on the outside of the cylinder as Actuator for the switching valve is accessible, which one at the The outside of the cylinder cover forms a detachably attachable unit.

Aus der DE-A-1 185 025 ist ein Kolbenspeicher dieser Art bekannt, der zur Betätigung der Schüttgut-Entladeeinrichtung bei Eisenbahnwaggons vorgesehen ist. Die bei derartigen Waggons vorgesehene Hydraulikanlage weist mindestens eine durch einen betreffenden Radsatz angetriebene Hydropumpe auf, die während der Fahrbewegung des Waggons einen Lade-Fluidstrom in den Kolbenspeicher pumpt Wird hierbei der eingestellte Betriebsdruck im Speicher erreicht, bewirkt die Abschalteinrichtung, daß der Lade-Fluidstrom über die Umgehungs-Rohrleitung drucklos zum Tankanschluß der Hydraulikanlage umgeleitet wird und somit in den Fluid-Vorratsbehälter abfließt.From DE-A-1 185 025 a piston accumulator of this type is known, which for Operation of the bulk material unloading device provided for railway wagons is. The hydraulic system provided in such wagons has at least one hydraulic pump driven by a relevant wheel set on a charging fluid flow during the movement of the wagon pumps into the piston accumulator If the set operating pressure in the When memory reaches, the shutdown device causes the charging fluid flow via the bypass pipeline to the tank connection of the hydraulic system is diverted and thus flows into the fluid reservoir.

Der Erfindung liegt die Aufgabe zugrunde, einen Kolbenspeicher der besagten Art zu schaffen, der sich bei kompakter Bauweise durch ein besonders gutes Betriebsverhalten auszeichnet.The invention has for its object a piston accumulator of said To create kind that stands out in a compact design by a special distinguishes good operating behavior.

Bei einem Kolbenspeicher der eingangs genannten Art ist diese Aufgabe erfindungsgemäß dadurch gelöst, daß der Schaltstößel an seinem für die Zusammenwirkung mit dem Kolben vorgesehenen inneren Ende in einer im Gasraum befindlichen, an der Innenwand des Zylinders befestigten Traverse längsverschiebbar geführt.In the case of a piston accumulator of the type mentioned at the outset, this is the task solved according to the invention in that the switching plunger on his for Interaction with the piston provided in an inner end Traverse located on the inner wall of the cylinder guided longitudinally.

Diese innere Führung eröffnet die Möglichkeit, den den Gasraum definierenden Teil des Zylinders in einer beträchtlichen Baulänge auszubilden, wodurch erreicht wird, daß das Volumen des Gasraumes innerhalb des Kolbenspeichers gegenüber dem Hubvolumen des Kolbens im Ölraum sehr groß werden kann. Dies hat den besonderen Vorteil, daß die sich über den gesamten Arbeitshub des Kolbens ergebende Druckdifferenz trotz kompakter Bauweise des Speichers verhältnismäßig gering bleibt, was für den sicheren Betrieb der betreffenden Hydraulikanlage, also im speziellen Fall der Schüttgut-Entladeeinrichtung, besonders günstig ist.This inner guidance opens up the possibility of defining the gas space Form part of the cylinder in a considerable length, which is achieved that the volume of the gas space within the piston accumulator very large compared to the piston displacement in the oil chamber can be. This has the particular advantage that it covers the entire area Working stroke of the piston resulting pressure difference despite compact design the memory remains relatively small, which for the safe Operation of the hydraulic system in question, i.e. in the special case of the bulk material unloading device, is particularly cheap.

Nachstehend ist die Erfindung an Hand eines in der Zeichnung dargestellten Ausführungsbeispieles im einzelnen erläutert. Es zeigen:

Fig. 1
eine schematisierte Blockdarstellung des Kolbenspeichers mit zugehöriger hydraulischer Schaltung;
Fig. 2
einen Längsschnitt des Kolbenspeichers und
Fig. 3
einen gegenüber Fig. 2 in größerem Maßstab gezeichneten Teillängsschnitt, in dem ein Teil des Zylinderdeckels mit zugehörigen Komponenten gezeigt ist.
The invention is explained in detail below using an exemplary embodiment shown in the drawing. Show it:
Fig. 1
a schematic block diagram of the piston accumulator with associated hydraulic circuit;
Fig. 2
a longitudinal section of the piston accumulator and
Fig. 3
a partial longitudinal section compared to Fig. 2 drawn on a larger scale, in which a part of the cylinder cover is shown with associated components.

In der Blockdarstellung von Fig. 1 ist der Zylinder eines Kolbenspeichers mit 1 bezeichnet, dessen Innenraum durch einen fliegend angeordneten Trennkolben 3 in einen Ölraum 5 und einen Gasraum 7 unterteilt ist. Fig. 2 zeigt den Kolben 3 in seiner am Zylinderfuß 9 anliegenden Endstellung, was dem Betriebszustand entspricht, bei dem der Ölraum 5 nicht durch einen zugeführten Lade-Fluidstrom aufgeladen ist, das Volumen des Ölraumes 5 unter Einfluß des im Gasraum 7 befindlichen Druckgases (beim Ausführungsbeispiel N2) durch Verschieben des Kolbens 3 daher praktisch auf null reduziert ist.In the block diagram of FIG. 1, the cylinder of a piston accumulator is designated by 1, the interior of which is divided into an oil chamber 5 and a gas chamber 7 by an overhung separating piston 3. Fig. 2 shows the piston 3 in its end position against the cylinder base 9, which corresponds to the operating state in which the oil chamber 5 is not charged by a supplied charging fluid flow, the volume of the oil chamber 5 under the influence of the compressed gas in the gas chamber 7 (at Embodiment N 2 ) is therefore practically reduced to zero by moving the piston 3.

Für die Zufuhr des Lade-Fluidstromes zum Ölraum 5 weist der Zylinderfuß 9 einen Anschluß 11 auf, zu dem das Druckfluid von der zugeordneten Hydro pumpe 13 über ein Rückschlagventil 15 zuführbar ist. Ein zweiter Anschluß 17 am Zylinderfuß 9 ermöglicht die Abfuhr des Arbeits-Fluidstromes über ein Rückschlagventil 19 zum betreffenden Verbraucher, d.h. im erwähnten speziellen Fall zum Arbeitszylinder der zugeordneten Schüttgut-Entladeeinrichtung. Eine über das Rückschlagventil 15 mit dem Anschluß 11 am Ölraum 5 in Verbindung stehende Umgehungs-Rohrleitung 21 bildet für den Lade-Fluid strom eine Überbrückung des Kolbenspeichers und bildet in Zusammenwirkung mit einem mit der Rohrleitung 21 verbundenen, mit dem Rückschlagventil 69 zusammenwirkenden Schaltventil 23 eine Abschalteinrichtung für den Lade-Fluidstrom.For the supply of the charging fluid flow to the oil space 5, the cylinder base 9 a port 11 to which the pressure fluid from the associated Hydraulic pump 13 can be fed via a check valve 15. A second Connection 17 on the cylinder base 9 enables the working fluid flow to be removed via a check valve 19 to the consumer concerned, i.e. in the special case mentioned to the working cylinder of the assigned Bulk unloading. One on the check valve 15 with the Connection 11 on the oil chamber 5 connecting bypass pipeline 21 forms a bridging of the piston accumulator for the charging fluid stream and forms in cooperation with one with the pipeline 21 connected, interacting with the check valve 69 Switching valve 23 a switch-off device for the charging fluid flow.

Als Betätigungsglied für das Schaltventil 23 ist ein Schaltstößel 25 in Form eines verhältnismäßig langen Rundstabes im Zylinder 1 axial längsverschiebbar. Eine an einer Rippe 27 an der Innenwand des Zylinders 1 befestigte Trennwand 29 mit einem Gasdurchlaß 31 bildet am inneren Endbereich des Schaltstößels 25 eine Führung für dessen Axialbewegung. Der Schaltstößel 25 ist durch die Federkraft einer Federanordnung, die beim gezeigten Ausführungsbeispiel durch ein Tellerfederpaket 33 (siehe insbesondere Fig. 3) gebildet ist, für seine gegen den Trennkolben 3 hin vorgeschobene Endstellung vorgespannt, die in Fig. 2 gezeigt ist, bei der der Schaltstößel 25 mit seinem betreffenden Ende 35 über die Trennwand 29 hinaus um eine Strecke vorspringt, die dem Betätigungsweg des Stellgliedes 37 des Schaltventiles 23 angepaßt ist. Die Trennwand 29 bildet einen mechanischen Anschlag für die Begrenzung der durch den Lade-Fluidstrom bewirkten Hubbewegung des Trennkolbens 3, der bei Anlage an der Trennwand 29 in Zusammenwirkung mit dem Ende 35 des Schaltstößels 25 diesen gegen die Federkraft des Tellerfederpakets 33 zur Betätigung des Schaltventiles 23 verschiebt (in der Fig. 2 nach rechts).A switching plunger 25 is in the form of an actuator for the switching valve 23 a relatively long round rod in the cylinder 1 axially displaceable. One attached to a rib 27 on the inner wall of the cylinder 1 Partition 29 with a gas passage 31 forms at the inner end region of the switching plunger 25 a guide for its axial movement. The Switch plunger 25 is by the spring force of a spring assembly, which at embodiment shown by a plate spring assembly 33 (see in particular Fig. 3) is formed for its advanced against the separating piston 3 Biased end position, which is shown in Fig. 2, in which the Switch plunger 25 with its relevant end 35 via the partition 29 protrudes by a distance that the actuating path of the actuator 37 of the switching valve 23 is adapted. The partition 29 forms a mechanical one Stop for limiting the flow of fluid through the charge effected lifting movement of the separating piston 3, which is in contact with the Partition 29 in cooperation with the end 35 of the switching plunger 25 this against the spring force of the plate spring assembly 33 for actuating the Switching valve 23 moves (in Fig. 2 to the right).

Wie den Fig. 2 und 3 zu entnehmen ist, erstreckt sich das der Trennwand 29 entgegengesetzte, äußere Ende des Schaltstößels 25 durch einen als Abschluß des Gasraumes 7 in das betreffende Ende des Zylinders 1 eingeschraubten Zylinderdeckel 39 hindurch, wobei ein Dichtungssatz 41 zur Bildung einer Abdichtung gegenüber der Bohrung 45 des Zylinderdeckels 39 mit einem verjüngten Abschnitt 43 des Schaltstößels 25 zusammenwirkt. Dieser verjüngte Abschnitt 43 erstreckt sich durch einen Schmutzabweiser 47 hindurch in eine Erweiterung 49 der Bohrung 45 hinein, in der der Schaltstößel 25 unter Bildung einer Schulterfläche 51 in einen im Durchmesser noch weiter verjüngten, endseitigen Schaftteil 53 übergeht. Die Erweiterung 49 nimmt das den Schaftteil 53 umgebende Tellerfederpaket 33 auf, das sich einerseits an der Schulterfläche 51 des Schaltstößel 25 und andererseits an einer in ein endseitiges Innengewinde 55 der Bohrungserweiterung 49 eingeschraubten Gewindehülse 57 abstützt. Ein nur in Fig. 2 zu sehendes Füllventil für die Zufuhr des Druckgases zum Gasraum 7 ist mit 59 bezeichnet.As can be seen in FIGS. 2 and 3, the partition extends 29 opposite, outer end of the switching plunger 25 by a closure of the gas space 7 screwed into the relevant end of the cylinder 1 Cylinder cover 39 through, with a set of seals 41 for Formation of a seal against the bore 45 of the cylinder cover 39 cooperates with a tapered section 43 of the switching plunger 25. This tapered section 43 extends through a dirt deflector 47 into an extension 49 of the bore 45 into which the Switch plunger 25 to form a shoulder surface 51 in a diameter passes even further tapered, end-side shaft portion 53. The extension 49 takes the plate spring assembly 33 surrounding the shaft part 53 on the one hand on the shoulder surface 51 of the switching plunger 25 and on the other hand, in an internal thread 55 of the bore extension 49 screwed threaded sleeve 57 supports. One only in Fig. 2 filling valve can be seen for the supply of the compressed gas to the gas space 7 designated 59.

Wie insbesondere aus Fig. 3 zu ersehen ist, bildet das Ende des Schaftteiles 53 des Schaltstößels 25 ein Kupplungsglied 61 für die gelenkige Verbindung mit dem Stellglied 37 des Schaltventiles 23. Dieses ist beim Ausführungsbeispiel ein handelsübliches Wegeventil vom Schieber-Typ, das als abnehmbare Baueinheit von einer Grundplatte 72 unmittelbar abschraubbar ist, die über einen Halterahmen 63 und eine Verschraubung 65 mit dem Zylinderdeckel 30 verbunden ist.As can be seen in particular from FIG. 3, the end of the shaft part forms 53 of the switching plunger 25, a coupling member 61 for the articulated connection with the actuator 37 of the switching valve 23. This is in the embodiment a commercial directional control valve of the slide type, which as removable unit can be unscrewed directly from a base plate 72 is that via a holding frame 63 and a screw 65 with the Cylinder cover 30 is connected.

Wie Fig. 1 zeigt, ist die Umgehungs-Rohrleitung 21 mit dem Schaltventil 23 verbunden, welches bei Betätigung, d.h., wenn der Schaltstößel 23 das Stellglied 37 gegen die wirkende Federkraft verschiebt (in der Zeichnung nach rechts), den in der Rohrleitung 21 herrschenden Ladedruck des Ölraumes 5 zu einer Steuerleitung 67 durchschaltet. Durch den Druck der Steuerleitung 67 wird ein mit dieser in Verbindung stehendes, hydraulisch entsperrbares Rückschlagventil 69 entsperrt. Das Rückschlagventil 69 ist so geschaltet, daß es im entsperrten Zustand über eine ihm vorgeschaltete Drossel 70 eine Fluidverbindung von der Umgehungs-Rohrleitung 21 zum Tankanschluß 71 freigibt.As shown in FIG. 1, the bypass pipeline 21 with the switching valve 23 connected, which when actuated, i.e. when the switching plunger 23 Actuator 37 moves against the acting spring force (in the drawing to the right), the charge pressure of the oil space prevailing in the pipeline 21 5 connects to a control line 67. By printing the Control line 67 becomes hydraulic connected to it unlockable check valve 69 unlocked. The check valve 69 is like this switched that it is in the unlocked state upstream of it Throttle 70 provides fluid communication from the bypass pipe 21 to the Tank connection 71 releases.

Wenn bei Erreichen eines vorbestimmten Ladedruckes im Ölraum 5 der Kolben 3 den Schaltstößel 25 beaufschlagt und gegen die wirkende Federkraft zur Betätigung des Schaltventils 23 verschiebt und dieses dementsprechend den in der Umgehungs-Rohrleitung 21 herrschenden Ladedruck zur Steuerleitung 67 durchschaltet, erfolgt über das entsperrte Rückschlagventil 69 und die vorgeschaltete Drossel 70 die drucklose Abfuhr des Lade-Fluidstromes, so daß der Kolbenspeicher hydraulisch überbrückt ist. Aufgrund der am Schaltventil 23 und dem Schaltstößel 25 wirkenden, vorspannenden Federkraft kehrt bei einem Abfall des Ladedruckes im Ölraum 5, bei dem sich der Kolben 3 vom Ende 35 des Schaltstößels 25 entfernt, das Schaltventil 23 in den Schaltzustand zurück, bei dem der mit der Rohrleitung 21 verbundene Anschluß gesperrt ist und die Steuerleitung 67 mit dem Tankanschluß 71 verbunden, d.h drucklos ist. Somit ist das Rückschlagventil 69 nicht länger entsperrt, und die Überbrückung des Kolbenspeichers über die Umgehungs-Rohrleitung 21 ist unterbunden, so daß der Lade-Fluidstrom zur Aufladung des Kolbenspeichers wieder wirksam werden kann.If when a predetermined boost pressure in the oil chamber 5 is reached Piston 3 acts on the switching plunger 25 and against the acting spring force moves to actuate the switching valve 23 and this accordingly the charge pressure prevailing in the bypass pipeline 21 Control line 67 is connected through the unlocked check valve 69 and the upstream throttle 70 the unpressurized discharge of the charging fluid flow, so that the piston accumulator is hydraulically bridged. by virtue of the biasing acting on the switching valve 23 and the switching plunger 25 Spring force returns when the boost pressure in the oil chamber drops 5, in which the piston 3 moves away from the end 35 of the switching plunger 25, the switching valve 23 back to the switching state in which the pipeline 21 connected connection is blocked and the control line 67 with connected to the tank connection 71, i.e. is depressurized. This is the check valve 69 no longer unlocked, and the bypass of the piston accumulator is prevented via the bypass pipeline 21, so that the Charge fluid flow for charging the piston accumulator become effective again can.

Claims (7)

  1. Piston-type accumulator for hydraulic liquid delivered to a consumer in a hydraulic system, notably for hydraulic actuation of a discharge unit on bulk goods vehicles without their own drive, with a piston (3) supported at one side in a cylinder (1), dividing the cylinder into an oil chamber (5) and a gas chamber (7), with ports (11 or 17) provided at the oil chamber (5) for delivery of the charge fluid and discharging the working fluid, with a tappet (25) co-acting at its inner end (35) with the piston (3) and guided with its outer end in the cylinder cover (39) delimiting the gas chamber (7), and with a control valve (23) serving as a cut-out device for the charge fluid, the said control valve communicating, via the by-pass line (21) serving as a controllable line bridging the piston-type accumulator, with the port (11) for the charge fluid at the oil chamber (5) and actuated by the outer end of the tappet (25) which is guided towards the outside by passing in a sealed manner through the cylinder cover (39) and being accessible at the outside of the cylinder (1) as the actuating element for the control valve (23) which forms a removably mountable unit on the outside of the cylinder cover (39), characterised in that the tappet (25) is guided movably in the longitudinal direction at its inner end (35) envisaged for co-acting with the piston (3), in a cross beam (29) located in the gas chamber (7) and attached to the inner wall of the cylinder (1).
  2. A piston-type accumulator according to Claim 1, characterised in that the cross beam is in the form of a separating wall (29) with at least one gas passage (31), forming a stop limiting the movement of the piston (3) above which the end (35) of the tappet (25) protrudes by an amount equivalent to the length of the operating stroke of the control valve under the effect of a pre-loading spring force when the piston (3) is in a position away from the stop, so that the tappet (25) is slidable when the piston (3) abuts at the stop against the spring force to operate the control valve (23).
  3. A piston-type accumulator as in Claim 2, characterised in that a stack of spring washers (33) is provided to produce the spring force, the said stack of spring washers being accommodated within an enlarged section (49) of the bore (45) provided for the tappet (25) to pass through the cylinder cover (39), at its end.
  4. A piston-type accumulator according to Claim 3, characterised in that the tappet (25) has at its outer end a shank (53), with a reduced diameter to form a shoulder face (51), extending in the enlarged section (49) of the bore (45) in the cylinder cover (39) through the stack of spring washers (33) supported at one end at the shoulder face (51) of the tappet (25) and at the other at a threaded sleeve (57) screwed into the enlarged section (49) of the bore (45) in the cylinder cover (39).
  5. A piston-type accumulator according to Claim 4, characterised in that the end of the tappet (25) serving as the actuating member of the control valve has a coupling member (61) for connecting to the movable adjusting member (37) of the control valve (23) attachable at the cylinder cover (39).
  6. A piston-type accumulator according to one of the Claims 1 to 5, characterised in that a commercial-type way-valve (23) is envisaged as the control valve.
  7. A piston-type accumulator according to one of the Claims 1 to 6, characterised in that a non-return valve (69), hydraulically unblockable by means of the control valve, with a throttle valve (70) upstream of it, is envisaged for creating a hydraulic connection effecting the cutting off of the charge flow between the by-pass line (21) and the tank connection (71) of the hydraulic system.
EP99927842A 1998-06-19 1999-06-02 Piston-type accumulator for a hydraulic fluid to be supplied to a consumer in a hydraulic installation Expired - Lifetime EP1086312B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19827363 1998-06-19
DE19827363A DE19827363A1 (en) 1998-06-19 1998-06-19 Piston store for hydraulic fluid in vehicle for friable goods without own drive
PCT/EP1999/003816 WO1999067536A1 (en) 1998-06-19 1999-06-02 Piston-type accumulator for a hydraulic fluid to be supplied to a consumer in a hydraulic installation

Publications (2)

Publication Number Publication Date
EP1086312A1 EP1086312A1 (en) 2001-03-28
EP1086312B1 true EP1086312B1 (en) 2003-05-21

Family

ID=7871409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99927842A Expired - Lifetime EP1086312B1 (en) 1998-06-19 1999-06-02 Piston-type accumulator for a hydraulic fluid to be supplied to a consumer in a hydraulic installation

Country Status (9)

Country Link
US (1) US6332477B1 (en)
EP (1) EP1086312B1 (en)
JP (1) JP2002519590A (en)
AT (1) ATE241087T1 (en)
DE (2) DE19827363A1 (en)
DK (1) DK1086312T3 (en)
ES (1) ES2200523T3 (en)
PT (1) PT1086312E (en)
WO (1) WO1999067536A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101435450B (en) * 2007-11-13 2011-09-07 中国国际海运集装箱(集团)股份有限公司 Hydraulic unit, castor assembly and container moving device and method

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10244705B3 (en) * 2002-09-24 2004-01-08 Gesellschaft für technische Entwicklungen mbH Device for reducing and equalizing the pressure of a viscous medium
EP2058527A3 (en) * 2007-11-08 2012-05-30 Parker-Hannifin Corporation Lightweight high pressure repairable piston composite accumulator with slip flange
EP2060797A3 (en) 2007-11-13 2012-11-14 Parker-Hannifin Corporation Lightweight high pressure repairable piston tie rod composite accumulator
US9127661B2 (en) 2010-10-25 2015-09-08 Hamilton Sundstrand Corporation Bootstrap accumulator system with telescoping actuator cylinder
ITBO20120233A1 (en) * 2012-04-27 2013-10-28 Magneti Marelli Spa HYDRAULIC SERVO OF A SERVO-CHANGE
CN105604741B (en) * 2016-03-14 2018-01-12 武汉科技大学 Dimethyl ether engine Premixed combustion combustion system valve opening control device
US10954966B2 (en) 2017-10-25 2021-03-23 Raytheon Company Bootstrap accumulator containing integrated bypass valve
US11885454B2 (en) * 2019-12-27 2024-01-30 Performance Pulsation Control, Inc. Bladder saver device

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2743741A (en) * 1952-09-29 1956-05-01 Techron Ltd Hydraulic accumulator
US2797708A (en) * 1953-06-02 1957-07-02 Gen Motors Corp Accumulator
US3043341A (en) * 1957-07-12 1962-07-10 Loewy Eng Co Ltd Hydraulic accumulator
DE1188247B (en) * 1959-10-17 1965-03-04 Friedrich Stuebbe Pressure fluid accumulator for the hydraulic drive of injection molding machines, machine tools or the like.
FR1297881A (en) * 1961-05-26 1962-07-06 Sealing packing
DE1185025B (en) * 1962-06-13 1965-01-07 Montan Hydraulik G M B H & Co Pressure oil accumulator for hydraulic equipment controlled by a valve
US3979910A (en) * 1973-04-16 1976-09-14 Canada Wire And Cable Limited Closed circuit hydraulic control system
US3901279A (en) * 1974-01-30 1975-08-26 Karl Schnell Filling apparatus for pasty media, particularly for sausage meat
JPS51133631A (en) * 1975-05-16 1976-11-19 Hitachi Ltd Dash pot
DE3048651A1 (en) * 1980-12-23 1982-07-15 Gesellschaft für Hydraulik-Zubehör mbH, 6603 Sulzbach Pressure vessel with moving wall - has plunger in stationary wall acting on external switch
US4343477A (en) * 1981-02-04 1982-08-10 Combustion Engineering, Inc. Sealing device with thermal expansion pressure accumulator
US4457348A (en) * 1982-07-07 1984-07-03 Mueller Martin J Food product fill pump
DE3705642A1 (en) * 1986-07-02 1988-01-14 Man Nutzfahrzeuge Gmbh ENERGY STORAGE AND DELIVERY DEVICE
DE3744179A1 (en) * 1987-12-24 1989-07-06 Integral Hydraulik Co Mounting and filling device for a hydropneumatic piston accumulator
DE9113007U1 (en) * 1991-10-19 1991-12-19 Bolenz & Schaefer Maschinenfabrik Gmbh, 3560 Biedenkopf, De
US6116585A (en) * 1997-08-11 2000-09-12 Mannesmann Sachs Ag Pressure holder with an enclosed gas mass

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101435450B (en) * 2007-11-13 2011-09-07 中国国际海运集装箱(集团)股份有限公司 Hydraulic unit, castor assembly and container moving device and method

Also Published As

Publication number Publication date
PT1086312E (en) 2003-10-31
DE59905659D1 (en) 2003-06-26
US6332477B1 (en) 2001-12-25
DK1086312T3 (en) 2003-09-15
WO1999067536A1 (en) 1999-12-29
ES2200523T3 (en) 2004-03-01
EP1086312A1 (en) 2001-03-28
DE19827363A1 (en) 1999-12-23
ATE241087T1 (en) 2003-06-15
JP2002519590A (en) 2002-07-02

Similar Documents

Publication Publication Date Title
EP0615583B1 (en) Energy recovering device
DE3323363C2 (en)
DE3444205C2 (en)
EP2294331B1 (en) Hydraulic valve device
EP1086312B1 (en) Piston-type accumulator for a hydraulic fluid to be supplied to a consumer in a hydraulic installation
DE102004012382A1 (en) Hydraulic arrangement
DE4226754A1 (en) SUSPENSION SYSTEM FOR VEHICLES
EP0283026B1 (en) Method and device for starting an hydraulic membrane pump against a load
EP1331199B1 (en) Control system, especially for use in hydraulic lifting devices
WO2007090522A1 (en) Hydraulic control arrangement with regeneration and lowering brake valve
DE2424973A1 (en) Hydraulic drive control - has sealing valve, consisting of pilot and return valve
DE3737579C2 (en) Trailer brake valve
DE102005052116B4 (en) Device for securing the sequence of movements of at least two fluid-operated displacement units
EP3679254B1 (en) Valve
DE10151831B4 (en) Hydraulic system for a truck
DE4002755C2 (en) Valve arrangement
EP2694816B1 (en) Air regulator for compressors, in particular screw compressors
DE19709958A1 (en) Hydrostatic drive system has outlet tube with variable-pressure threshold valve
DE19513347B4 (en) Electromechanically actuated pressure modulator
DE4444381A1 (en) Positioning element actuator with piston cylinder unit
LU87831A1 (en) ADJUSTABLE PROPORTIONAL THROTTLE VALVE WITH RETURN
EP0893605A1 (en) Hydraulic drive system
DE102009058371A1 (en) Valve arrangement for controlling a consumer
DE3640640C2 (en) Hydrostatic drive system with a consumer with two connections
DE4230716A1 (en) Track dependent sequential control for two double-acting pressure rams - has controlled non-return valve in each ram piston, opened by mechanical stop on ram wall

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

17P Request for examination filed

Effective date: 20000517

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

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: NV

Representative=s name: ISLER & PEDRAZZINI AG

Ref country code: CH

Ref legal event code: EP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20030605

Year of fee payment: 5

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20030521

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20030613

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 20030617

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20030618

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20030620

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 20030625

Year of fee payment: 5

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 59905659

Country of ref document: DE

Date of ref document: 20030626

Kind code of ref document: P

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20030819

Year of fee payment: 5

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20030403197

Country of ref document: GR

ET Fr: translation filed
PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2200523

Country of ref document: ES

Kind code of ref document: T3

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: BOLENZ & SCHAEFER GMBH

Effective date: 20040220

NLR1 Nl: opposition has been filed with the epo

Opponent name: BOLENZ & SCHAEFER GMBH

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: 20040602

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040602

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040602

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040630

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040630

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

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 NON-PAYMENT OF DUE FEES

Effective date: 20041202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050105

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20041202

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PLCK Communication despatched that opposition was rejected

Free format text: ORIGINAL CODE: EPIDOSNREJ1

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 20050519

NLR2 Nl: decision of opposition

Effective date: 20050519

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20060530

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20060602

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20060630

Year of fee payment: 8

Ref country code: IT

Payment date: 20060630

Year of fee payment: 8

BERE Be: lapsed

Owner name: *HYDAC TECHNOLOGY G.M.B.H.

Effective date: 20070630

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20080101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080101

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20080626

Year of fee payment: 10

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20070604

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 NON-PAYMENT OF DUE FEES

Effective date: 20070604

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20080611

Year of fee payment: 10

Ref country code: DE

Payment date: 20080623

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20080529

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20080521

Year of fee payment: 10

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 NON-PAYMENT OF DUE FEES

Effective date: 20070602

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090602

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100226

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 NON-PAYMENT OF DUE FEES

Effective date: 20090630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090602

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: 20100101

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090602

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20090603