EP1180598B1 - Ensemble soupape - Google Patents

Ensemble soupape Download PDF

Info

Publication number
EP1180598B1
EP1180598B1 EP20010119038 EP01119038A EP1180598B1 EP 1180598 B1 EP1180598 B1 EP 1180598B1 EP 20010119038 EP20010119038 EP 20010119038 EP 01119038 A EP01119038 A EP 01119038A EP 1180598 B1 EP1180598 B1 EP 1180598B1
Authority
EP
European Patent Office
Prior art keywords
pressure
valve
connection
valve arrangement
consumer
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
EP20010119038
Other languages
German (de)
English (en)
Other versions
EP1180598A3 (fr
EP1180598A2 (fr
Inventor
Jörg Dantlgraber
Reiner Püschel
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.)
Bosch Rexroth AG
Original Assignee
Bosch Rexroth AG
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
Application filed by Bosch Rexroth AG filed Critical Bosch Rexroth AG
Publication of EP1180598A2 publication Critical patent/EP1180598A2/fr
Publication of EP1180598A3 publication Critical patent/EP1180598A3/fr
Application granted granted Critical
Publication of EP1180598B1 publication Critical patent/EP1180598B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/002—Hydraulic systems to change the pump delivery

Definitions

  • the invention relates to a valve arrangement for supplying a hydraulic consumer according to the preamble of patent claim 1.
  • Such a valve arrangement is known for example from DE 42 11 551 C2 and DE 43 34 167 A1 and is used in hydraulic systems in which a consumer is supplied via a variable displacement pump with a pressure medium.
  • a biasing valve is provided between the variable displacement pump and the consumer, which opens the connection to the consumer at a minimum pressure required for adjusting the delivery volume of the variable. This ensures that between the pressure connection of the variable displacement pump and the biasing valve of the required for actuating an actuator of the variable displacement minimum pressure. This minimum pressure is throttled over the congestion valve, so that lying below this pressure consumer pressures are adjustable.
  • the preload valve is designed with a bluff body which is biased by a biasing spring against a valve seat.
  • the force applied by the spring corresponds to the minimum pressure for adjusting the variable displacement pump.
  • the bluff body is designed with a valve seat, against the biasing spring, a valve body of a pressure relief valve is biased. Since the effective area of the valve body is lower than that of the bluff body, the valve body only opens against the force of the preloading spring when a maximum consumer pressure is reached at which a connection to a tank is opened via the pressure limiting valve.
  • the Spring rate of the biasing spring and the area ratios of the valve body and the bluff body are selected depending on the maximum consumer pressure to be set and the minimum pressure.
  • a hydraulic system for acting on a consumer with a regulated consumer pressure is further known in which a backup valve between a pump and the consumer is provided which opens at a sufficient to adjust the delivery volume of the pump minimum pressure and with a is provided between the consumer-side outlet of the accumulation valve and the tank connected throttle valve, the opening cross-section is adjustable.
  • GB 1 443 799 A1 discloses a valve arrangement which has a pressure-limiting valve which can be pre-controlled via a pilot valve arrangement.
  • the system pressure on the pilot pressure of the pilot valve assembly is adjustable.
  • the present invention seeks to provide a valve assembly that allows adjustment of the maximum consumer pressure to different operating conditions with minimal device complexity.
  • the valve arrangement according to the invention has a pressure connection, a consumer connection and a bluff body which is biased against a valve seat via a biasing spring accommodated in a spring chamber and which opens a connection between the pressure connection and the consumer connection when a minimum pressure in the pressure connection is reached and is provided with a pressure limiting connection. by its control to the two other terminals towards the pressure in these can be limited to a maximum value.
  • the pressure limiting connection can be opened by the bluff body to the two other connections, the spring chamber is connected to the pressure connection via a nozzle and, on the one hand, a pilot valve arrangement and, on the other hand, a congestion valve connected to the spring chamber via a throttle cross section which can be varied by the bluff body. Since the bluff body according to the invention is additionally biased by a control pressure in the closing direction, the biasing spring can be designed weaker than the prior art described in the introduction according to DE 42 11 551 C2 and DE 43 34 167 A1.
  • the spring chamber associated with the spring chamber is connected via a nozzle to the pressure connection, wherein the control pressure in the spring chamber can be limited by a parallel to the pilot valve arrangement connected congestion valve, which is effective for adjusting the minimum pressure required for adjusting the variable.
  • the bluff body be carried out with a first control edge, via which a connection to the congestion valve incentives exchange cross section with increasing consumer pressure is zuu Kunststoffbar, so that upon reaching the maximum consumer pressure of the bluff body in the closed position acting control pressure is determined only by the pilot valve assembly, while in underlying area of the control pressure through the accumulation valve and the flow control valve is predetermined.
  • the bluff body can be designed with a further control edge over which a tank connection can be opened when the maximum control pressure set via the pilot valve arrangement is exceeded, so that the pressure medium can flow off directly to the tank with minimal pressure losses. That is, in the valve arrangement according to the invention, the comparatively large-area bluff body is also part of the pressure limiting valve, via which the pressure medium flow is controlled upon reaching the maximum pressure.
  • the pilot valve arrangement serves only for setting the effective in the closing direction pilot pressure, so that it can be designed with a small cross-section.
  • the effective for setting the minimum pressure accumulation valve is preferably designed as a check valve, the closing spring determines the minimum pressure together with the biasing body biasing in the closing direction biasing spring.
  • the pilot valve arrangement can be embodied, for example, as an electrically adjustable pressure-limiting valve or through a large number of pressure-limiting valves connected in parallel, which can be selectively connected via a directional control valve.
  • the bluff body is designed with a second control edge forming shell breakthrough over the connection to the tank is aufêtbar on reaching the maximum consumer pressure.
  • the nozzle is advantageously formed in the bottom of the cup-shaped bluff body.
  • Figure 1 shows a simplified circuit diagram of a valve assembly 1, via which a hydraulic consumer 2, for example an aggregate of an injection molding machine with a variable displacement pump 4 is connectable.
  • a hydraulic consumer 2 for example an aggregate of an injection molding machine with a variable displacement pump 4 is connectable.
  • the variable displacement pump 4 can be designed for example as a piston pump, preferably axial piston pump or radial piston pump, wherein the actuator 6 is formed by a control cylinder with associated control valve.
  • the valve assembly 1 has an input port P to which the pressure port of the variable displacement pump 4 is connected.
  • the consumer 2 is connected to a consumer port A, while a tank 8 is connected to a tank port T.
  • a biasing valve 12 is arranged, the bluff body is acted upon by a biasing spring 14 in the closing direction and the pressure in the pressure line 10 in the opening direction.
  • a pilot-operated pressure relief valve 16 is provided, which is acted upon in the closing direction by a pre-control pressure which is predetermined via a pilot valve arrangement 18.
  • valve 12 and pressure relief valve 16 are shown separately from each other - as can be seen from the following explanations, the two components 12, 16 are integrated in a common valve assembly, wherein the biasing spring 14 and the Valve body of the pressure relief valve 16 biases in the closing direction.
  • the consumer pressure tapped off from the pressure line 10 via a control line 20 in which a nozzle is located can be individually limited as a function of the operating conditions.
  • the pilot valve assembly has three parallel connected, designed as pressure relief valves pilot valves 22, 23, 24, wherein the pilot valve 22 is connected directly into the control line 20, while the two remaining pilot valves 23, 24, a preferably electrically adjustable directional control valve 26 upstream, via which one of the two pilot valves 23, 24 is selectively switched on.
  • the pilot valve 22 is effective, via which the maximum effective consumer pressure can be limited to a maximum pressure.
  • the two pilot valves 23, 24 limit the maximum consumer pressure to lower pressures than the pilot valve 22, so that by switching the directional control valve 26 and by appropriately connecting the pilot valve 23 or 24 correspondingly changed maximum consumer pressures are adjustable.
  • FIG. 2 shows a greatly simplified sectional view through a valve assembly 1, with which the circuit shown in Figure 1 is realized.
  • the valve assembly 1 has a valve housing 30, in the valve bore 32, a bluff body 34 is guided. This is biased by the biasing spring 14 against a valve seat 36, so that the pressure port P is shut off from the working port A.
  • the bluff body 34 acts as a common valve member for both the valve 12 and the pressure relief valve 16.
  • the bluff body 34 is designed as a cup-shaped piston, in the bottom of the nozzle 38 is arranged, via which the interior 40 of the piston with a spring chamber 42 of the valve assembly 1 is connectable. That is, the pressure at the pressure port P is transmitted in the closed position of the bluff body 34 via the interior 40 and the nozzle 38 in the spring chamber 42, so that the bluff body 34 is biased in addition to the force of the biasing spring 14 by the control pressure in the spring chamber 42 in the closed position.
  • a biasing terminal 44 which is connected via a tank line 46 to the tank 8.
  • a check valve check valve 48 is provided in the tank line 46, the closing spring 50 is selected in response to the adjustment of the variable 4 to be set minimum pressure.
  • the biasing terminal 44 forms a throttle cross-section 52, which during the axial movement of the bluff body 34 by the bottom-side peripheral edge 54 is open or aufberichtbar.
  • a pressure limiting port 56 which is connected downstream of the check valve 48 to the tank line 46.
  • this pressure limiting connection 56 can be replaced by another one Control edge 58 are turned on, which is formed by an opening 60 in the jacket of the bluff body 34.
  • Figure 2 shows the valve assembly in its basic position in which the pressure at the working port A is less than the minimum pressure required for the adjustment of the variable 4. It is assumed that the pressure relief valve 28 is set to 192 bar and the force of the biasing spring 14 is a pressure of 8 bar and the force of the closing spring 50 corresponds to a pressure of 10 bar. Accordingly, the check valve 48 opens at a pressure of 10 bar in the spring chamber 42, so that the back of the bluff body 34 is acted upon by a force in the closing direction, which corresponds to a pressure of 18 bar (closing spring 14 8 bar, check valve 48 10 bar).
  • valve assembly Upon reaching this minimum pressure in the pressure port P of the bluff body 34 is lifted as shown in Figure 2 of its valve seat 36 and opened the connection to the consumer port A. In this case, the minimum pressure is throttled to the load pressure required by the consumer by the opening damper 16.
  • the valve assembly is in storage function. It flows a control oil flow whose size is determined by the cross section of the nozzle 38 and the pressure difference (of 8 bar) above the nozzle, via the nozzle 18 and the check valve 48 to the tank.
  • the valve arrangement has virtually no function in such an operating state.
  • the throttle cross-section 52 With increasing pressure at the consumer port A, the throttle cross-section 52 is increasingly fed. As long as the load pressure has a level that does not respond to the pressure limiting valve 28, the bluff body 34 remains in a position below the position shown in Figure 3, in which the throttle cross section 52 may just be slightly open.
  • the accumulation valve 12 and the pressure relief valve 16 are integrated with each other, wherein the bluff body 34 acts as a common valve member for both components.
  • the system pressure to be limited can be adjusted in a simple manner via the pilot valve 28, so that the valve arrangement can be adapted to different operating conditions.
  • a valve arrangement for supplying a hydraulic consumer with a pressure medium, wherein a biasing valve for adjusting a variable displacement required minimum pressure is adjustable.
  • the maximum consumer pressure is limited by a pressure limiting valve, wherein the pressure limiting valve is associated with a pilot valve arrangement, via which the effective in the closing direction of a bluff body of the pressure relief valve control pressure is variable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)

Claims (11)

  1. Système de soupape destiné à alimenter un consommateur hydraulique (2) en moyens de pression, comprenant un raccord de pression (P), un raccord de consommateur (A) et un corps de retenue (34), qui est précontraint par un ressort de précontrainte (14) logé dans une chambre de ressort (42) contre un siège de soupape (36) et qui, lorsqu'une pression minimale est atteinte dans le raccord de pression (P), commande une liaison entre le raccord de pression (P) et le raccord de consommateur (A), et comprenant un raccord de limitation de pression (56), dont la commande par rapport aux deux autres raccords (P, A) permet de limiter la pression dans ces raccords à une valeur maximale, caractérisé en ce que le raccord de limitation de pression (56) peut être commandé par le corps de retenue (34) par rapport aux deux autres raccords (P, A), en ce que la chambre de ressort (42) est reliée au raccord de pression (P) par une buse (38) et en ce que d'une part un système de soupape pilote (18, 28) et d'autre part, par l'intermédiaire d'une section d'étranglement (52) pouvant être modifiée par le corps de retenue (34), une soupape de retenue (48) sont raccordées à la chambre de ressort (42).
  2. Système de soupape selon la revendication 1, comprenant une soupape de limitation de pression (16) destinée à limiter la pression maximale du consommateur, le système de soupape pilote (18, 28) étant associé à la soupape de limitation de pression (16) pour modifier la pression maximale du consommateur réglable par l'intermédiaire de la soupape de délimitation de pression (16).
  3. Système de soupape selon la revendication 1 ou 2, une liaison entre le raccord de pression (P) et un raccord de réservoir (T) pouvant être commandée par le raccord de délimitation de pression (56).
  4. Système de soupape selon l'une quelconque des revendications précédentes, le système de soupape pilote (18, 28) étant raccordé par une conduite de commande pilote (62) à la chambre de ressort (42), qui peut être reliée au réservoir (8) par la section d'étranglement variable (52) et la soupape de retenue (48).
  5. Système de soupape selon l'une quelconque des revendications précédentes, le corps de retenue (34) présentant une première arête de commande (54) par l'intermédiaire de laquelle la section d'étranglement (52) peut être commandée à une pression de consommateur croissante.
  6. Système de soupape selon la revendication 5, le corps de retenue (34) présentant une autre arête de commande (58), par l'intermédiaire de laquelle, lorsque la pression maximale du consommateur réglée par le système de soupape pilote (18, 28) est dépassée, le raccord de limitation de pression (56) peut être commandé.
  7. Système de soupape selon la revendication 6, l'autre arête de commande (58) étant formée par un passage (60) dans le revêtement du corps de retenue (34).
  8. Système de soupape selon l'une quelconque des revendications précédentes, la soupape de commande étant une soupape de retenue (48).
  9. Système de soupape selon l'une quelconque des revendications précédentes, le système de soupape pilote présentant une soupape de limitation de pression (28) pouvant être réglée électriquement.
  10. Système de soupape selon l'une quelconque des revendications 1 à 8, le système de soupape pilote (18) présentant une pluralité de soupapes de limitation de pression (22, 23, 24) qui peuvent être mises sous tension au choix par l'intermédiaire d'un distributeur (26).
  11. Système de soupape selon l'une quelconque des revendications précédentes, la buse (38) étant disposée dans le fond du corps de retenue (34).
EP20010119038 2000-08-17 2001-08-07 Ensemble soupape Expired - Lifetime EP1180598B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10040737A DE10040737A1 (de) 2000-08-17 2000-08-17 Ventilanordnung
DE10040737 2000-08-17

Publications (3)

Publication Number Publication Date
EP1180598A2 EP1180598A2 (fr) 2002-02-20
EP1180598A3 EP1180598A3 (fr) 2003-04-16
EP1180598B1 true EP1180598B1 (fr) 2006-11-08

Family

ID=7653094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010119038 Expired - Lifetime EP1180598B1 (fr) 2000-08-17 2001-08-07 Ensemble soupape

Country Status (2)

Country Link
EP (1) EP1180598B1 (fr)
DE (2) DE10040737A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5419087B2 (ja) * 2006-09-14 2014-02-19 シェフラー テクノロジーズ アクチエンゲゼルシャフト ウント コンパニー コマンディートゲゼルシャフト 消費器に作動液を供給するための液圧系
DE102016122392A1 (de) 2016-11-21 2018-05-24 Schwing Gmbh Dickstoffpumpe mit einstellbarer Begrenzung des Förderdrucks

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2120125A1 (de) * 1971-04-24 1972-11-16 Robert Bosch Gmbh, 7000 Stuttgart Hydraulikanlage
NL169628C (nl) * 1971-06-29 1982-08-02 Ind En Handelmaatschappij Kopp Regelinrichting voor het lastonafhankelijk besturen van hydraulische aandrijfapparaten.
DE2249743A1 (de) * 1972-10-11 1974-04-18 Kloeckner Humboldt Deutz Ag Ventilaggregat
DE3603988C2 (de) * 1984-11-28 1994-12-08 Zahnradfabrik Friedrichshafen Steuereinrichtung für zwei über je einen Stromzweig durch eine Hochdruckpumpe versorgte hydraulische Stellvorrichtungen
DE4211551C2 (de) * 1992-04-06 1998-03-26 Rexroth Mannesmann Gmbh Verstellpumpe mit einem Druckbegrenzungs- und einem Druckzuschaltventil
DE4335495A1 (de) * 1992-10-27 1994-04-28 Bosch Gmbh Robert Steuereinrichtung für eine Hydraulikanlage
DE4334167A1 (de) * 1993-10-07 1995-04-13 Rexroth Mannesmann Gmbh Hydraulisches System zur Beaufschlagung eines hydraulischen Verbrauchers mit einem geregelten Verbraucherdruck und Drosselventil, insbesondere zur Verwendung in einem solchen hydraulischen System
JPH10131751A (ja) * 1996-10-29 1998-05-19 Aisin Seiki Co Ltd タンデムポンプ装置
DE19729693A1 (de) * 1997-07-11 1999-01-14 Claas Industrietechnik Gmbh Hydraulische Steuerung für schaltbare Verbindungselemente, insbesondere für eine fremdgeschaltete Kupplung an einem Antriebsmotor

Also Published As

Publication number Publication date
EP1180598A3 (fr) 2003-04-16
DE10040737A1 (de) 2002-02-28
DE50111399D1 (de) 2008-03-13
EP1180598A2 (fr) 2002-02-20

Similar Documents

Publication Publication Date Title
EP0638746B1 (fr) Etage piloté pour une soupape limitant la pression
DE4431330B4 (de) Sitzventil mit Kraftrückkopplungssteuerung
EP0294776A1 (fr) Circuit de commande pour un organe de réglage hydraulique
EP0016719B1 (fr) Dispositif de commande pour moteur hydraulique
EP0958455B1 (fr) Circuit de commande hydraulique pour consommateur hydraulique prioritaire et consommateur hydraulique secondaire
DE60304663T2 (de) Hydraulische Ventileinrichtung
WO2007096030A1 (fr) Dispositif de commande hydraulique
DE10019254C2 (de) Drucksteuerventil
DE19524900C2 (de) Vorgesteuertes Druckbegrenzungsventil
DE2843576A1 (de) Pumpensteueranordnung
DE4112065C2 (de) Vorgesteuertes Druckabschaltventil mit einstellbarer Schaltdruckdifferenz
EP2126371B1 (fr) Ensemble vanne
DE3320047C2 (fr)
EP0115590A2 (fr) Dispositif de commande hydraulique
EP1180598B1 (fr) Ensemble soupape
DE3422164C2 (de) Hydraulische Anlage mit mindestens zwei Verbrauchern hydraulischer Energie
WO2003087585A1 (fr) Systeme de commande hydraulique faisant appel au principe de la sensibilite de charge
DE19632368A1 (de) Elektrohydraulisches Regelwegeventil
EP0624732B1 (fr) Dispositif de commande hydraulique
DE4026849C2 (de) Ventilanordnung zum Erzeugen eines Steuerdrucks in einer hydraulischen Anlage
EP1686268B1 (fr) Dispositif hydraulique de contrôle
EP1481167B1 (fr) Dispositif a soupapes
EP1452744B1 (fr) Dispositif de contrôle hydraulique
DE3239965A1 (de) Elektrohydraulische steuereinrichtung
DD206513A3 (de) Stetig verstellbares 2-wege-einbauventil

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

AK Designated contracting states

Kind code of ref document: A2

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

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

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

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20030515

AKX Designation fees paid

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 20040628

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

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

Effective date: 20061116

EN Fr: translation not filed
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: 20070809

REF Corresponds to:

Ref document number: 50111399

Country of ref document: DE

Date of ref document: 20080313

Kind code of ref document: P

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: 20070622

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: 20061108

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

Ref country code: GB

Payment date: 20120823

Year of fee payment: 12

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

Ref country code: IT

Payment date: 20120824

Year of fee payment: 12

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

Ref country code: DE

Payment date: 20121024

Year of fee payment: 12

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

Effective date: 20130807

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: 20140301

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50111399

Country of ref document: DE

Effective date: 20140301

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: 20130807

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: 20130807