EP0367988B1 - Pompe à membrane - Google Patents

Pompe à membrane Download PDF

Info

Publication number
EP0367988B1
EP0367988B1 EP89118380A EP89118380A EP0367988B1 EP 0367988 B1 EP0367988 B1 EP 0367988B1 EP 89118380 A EP89118380 A EP 89118380A EP 89118380 A EP89118380 A EP 89118380A EP 0367988 B1 EP0367988 B1 EP 0367988B1
Authority
EP
European Patent Office
Prior art keywords
pump
diaphragm
wall element
elastic
noise
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
EP89118380A
Other languages
German (de)
English (en)
Other versions
EP0367988A1 (fr
Inventor
Erich Becker
Heinz Riedlinger
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.)
KNF Neuberger GmbH
Original Assignee
KNF Neuberger 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
Application filed by KNF Neuberger GmbH filed Critical KNF Neuberger GmbH
Publication of EP0367988A1 publication Critical patent/EP0367988A1/fr
Application granted granted Critical
Publication of EP0367988B1 publication Critical patent/EP0367988B1/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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0081—Special features systems, control, safety measures
    • F04B43/009—Special features systems, control, safety measures leakage control; pump systems with two flexible members; between the actuating element and the pumped fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms

Definitions

  • the invention relates to a diaphragm pump according to the preamble of claim 1.
  • diaphragm pumps with a pump housing and a pump diaphragm clamped between parts of this pump housing and which is moved by a connecting rod (eg DE-OS 30 05 834) are already known.
  • Such diaphragm pumps are also manufactured in a double version with two pump parts and, for example, an electric motor in between.
  • Such diaphragm pumps have proven themselves well for numerous applications, for example for generating negative pressure or as a compressor.
  • Such pumps equipped with a pump membrane also have disadvantages, particularly with regard to their noise generation.
  • the pump membrane emits not insignificant noises, in particular because of the oscillatory movements imposed on it by the connecting rod, but also because of vibrations occurring on the pump membrane itself.
  • a membrane pump is also already known, the membrane of which is connected to a rod which transmits the pivoting movements of a cam-controlled rocker arm to the membrane as upward and downward stroke movements (US Pat. No. 4,050,861).
  • cam control, rocker arm and rod are arranged in a housing part filled with lubricating oil, against which the diaphragm is sealed by a sealing element.
  • This sealing element is intended to protect the membrane from the lubricating oil, which has an adverse effect on the membrane and can undesirably reduce the elasticity of the membrane material. Noise reduction is not the purpose of this sealing element and can therefore only be achieved to a limited extent.
  • Diaphragm pumps are not infrequently used, for example, in examination laboratories, where noise is disruptive in the presence of a number of people, who are often highly precise and concentrated. This applies in particular if, for example, a diaphragm pump is "moved" from the negative pressure area into the positive pressure area. This can lead to an increase in noise emissions of up to 40% compared to normal pump operation.
  • a diaphragm pump of the type mentioned at the outset has also been created which, like the working diaphragm, has an additional diaphragm clamped in the pump housing, which forms a tight damping space between itself and the working diaphragm (DE-OS 25 02 566).
  • This damping chamber has - regardless of the working movement of the working diaphragm - almost constant pressure conditions, so that the working diaphragm can be subjected to a pressure which counteracts the natural vibrations of this diaphragm.
  • this previously known diaphragm pump can also be improved with regard to its noise shielding.
  • the wall part as a noise-shielding device which closes off the pump diaphragm part of the pump housing with respect to the pump diaphragm in a sound-absorbing manner is formed from which at least lower noise-relevant vibrations than from the pump membrane and that this noise shielding device has an elastic spacer between the wall part and the connecting rod head or the like connecting rod part.
  • the elastic spacer pretensions the wall part, which in turn is noise-shielding, to such an extent that the wall part can also oscillate to match the connecting rod movement, but has significantly lower natural vibrations. Accordingly, the wall part is practically no source of noise compared to the crank chamber of the diaphragm pump according to the invention.
  • the spacer consists of an elastic ring made of foam rubber or the like resilient and preferably simultaneously sound-absorbing material. Then there is already an additional damping of the sound emanating from the pump membrane in the elastic ring made of foam rubber or similar sound-absorbing material.
  • the elastic spacer can also consist essentially of elastic projections, ribs or the like which are approximately perpendicular to the plane of the noise shielding device and are attached to the wall part, which is preferably formed by a circular disk.
  • the elastic spacer preferably the elastic projections, can be connected in one piece to the elastic wall part, in particular the pane, and essentially form the noise shielding device.
  • Both a continuous one-piece formation of elastic ring including its projections on the one hand in connection with the flat wall part and an adhesive connection between such parts is possible.
  • the continuous one-piece design simplifies both manufacture and assembly.
  • the gluing of an elastic ring, for example made of foam rubber, to the flat wall part enables the production of a coherent noise shielding device from two different working materials, each with advantageous material properties, and at the same time a simplified assembly.
  • Cooling in the crankcase is possible without increasing and even reducing the noise emission, and this means a longer service life of the pump diaphragm and the ball bearings.
  • a straight line of cooling air through the crankcase and the electric drive motor of the pump motor unit is also possible with two-head in-line pumps.
  • practically no change in the sound emissions emanating from the pump membrane occurs within different operating ranges, e.g. when generating different negative and / or positive pressures.
  • a pump 1 shown in FIG. 1 is designed as a diaphragm pump. It has a pump housing 2, which essentially consists of a crankcase 3, a clamping plate 4 and a head plate 5. A pump membrane 6 is clamped on its outer edge between the clamping plate 4 and the top plate 5. Inlet and outlet ducts 8 and 9 open into the working space 7 delimited by the top plate 5 and the pump diaphragm 6.
  • the pump diaphragm 6 is connected to a connecting rod head 10, which in turn is attached to a connecting rod 11 which transmits the stroke movement coming from a crank drive 12 to the connecting rod head and the pump diaphragm.
  • a noise shielding device 13 is provided between the pump membrane 6 and the part of the pump housing 2 remote from the pump membrane. This shielding device 13 shields the pump-remote part of the pump housing from the pump diaphragm 6 in a sound-absorbing manner. Noises emanating from the pump diaphragm 6 are damped by this shielding device and kept away from the crank chamber 14. Noise emission to the outside is thus prevented even when cooling measures of the crank chamber 14 are provided. The cooling, in turn, enables a longer service life for the diaphragm and bearings.
  • FIG. 1 An embodiment of the noise shielding device 18 is shown in FIG. 1. Below the connecting rod head 10, facing the crank chamber 14, a membrane-like, flexible wall part 15 is provided, which is held at a distance from the crank chamber side underside 17 of the connecting rod head 10 by an elastic ring 16.
  • the elastic ring 16 forms a spacer 18.
  • the elastic ring 16 is dimensioned such that the wall screen 15 which provides noise shielding is prestressed to such an extent that this preload is greater than the pressure alternating loads acting on the wall part 15, which emanate from the pump diaphragm 6.
  • the wall part 15 thus oscillates to match the connecting rod movement, but is virtually free of natural vibrations and thus does not represent a source of noise with respect to the crank chamber 14. Accordingly, noise emission to the outside is largely prevented.
  • the elastic ring is preferably made of foam rubber or the like, as a result of which, on the one hand, the flexibility for the pretensioning of the wall part 15 and, at the same time, a sound-absorbing effect is achieved.
  • the membrane-like wall part 15 is clamped with its outer edge 19 between the crankcase 3 and the clamping plate 4.
  • the wall part 15 has a central opening 20 through which the connecting rod 11 extends. In this area it can also be seen that the inner edge of the wall part 15 rests on a connecting rod shoulder 21 at the opening 20 and is clamped from the other side by a sleeve 22 supported on the lower side of the connecting rod head 17.
  • the radial extension of the elastic ring 16 can protrude beyond that of the connecting rod head and, as indicated by dashed lines, can also approach the inner wall of the clamping plate 4. As a result, this noise-damping part is practically the whole Clear cross-section damping part and shielding part available.
  • the outer diameter of the connecting rod head is denoted by d and that of the elastic ring by D.
  • FIGS. 2 and 3 show a modified embodiment of a noise shielding device 13a, in which the spacer 18 is integrally connected to the wall part 15 on the side of the connecting rod head 10 facing it.
  • the spacer 18 is formed here by rib-shaped and approximately radially extending elastic projections 23. These projections 23 rest against the shape-matched underside 17a under prestress, so that here too the membrane can practically not be excited by the vibrations of the pump membrane 6. This also ensures here that the damping membrane 15 adopts the stroke movement of the connecting rod 11, but on the other hand does not carry out any natural vibrations.
  • an insert part made of foam rubber or the like which may be in the form of a molded part, can also be provided in order to provide sound absorption in addition to the vibration damping of the wall part 15.
  • the position of the clamping points of the wall part 15 on the one hand on the outer edge 19 and on the other hand in the connecting rod 11 relative to the connecting rod underside 17 or 17a is dimensioned such that the space between the underside 17 or 17a and the relaxed wall part 15 is smaller than the thickness of the spacer 18.
  • the wall part 15 of the noise shielding device 13 can be pre-shaped or arched approximately in the shape of a plate, as can be seen in FIG. 1, but in particular in FIG. 2.
  • This preforming results in defined deformation ratios in the transverse movements occurring due to the connecting rod tilting movement. If one were to deflect a flat wall part in the lateral direction, this would oppose the deflection movement to a much greater rigidity.
  • the plate-shaped preforming reduces these resistance forces opposing the connecting rod deflection movement, since the "stiffness" of the wall part in the side deflection direction is significantly lower. The power requirement for driving the pump is reduced accordingly.
  • the preforming can be achieved at the same time by the prestress provided, so that the wall part can form a flat plate before installation, which is then preformed and pre-stressed accordingly in the installed position. Excess material extension is provided in this plate 15 in the radial direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Claims (9)

1. Pompe comprenant un carter de pompe et au moins une membrane de pompe qui est déplacée par une bielle, et comprenant aussi une pièce plate et élastique formant paroi, laquelle est prévue entre la membrane de la pompe et la partie du carter de la pompe qui est éloignée de la membrane de la pompe, la pièce formant paroi étant fixée dans le carter de la pompe par son bord extérieur et à la bielle par le bord d'une ouverture à peu près centrale, caractérisée par le fait que la pièce (15) formant paroi est réalisée sous la forme d'un dispositif de protection contre le bruit (13, 13a), lequel ferme, par rapport à la membrane (6) de la pompe, la partie du carter (2) de la pompe qui est éloignée de la membrane de la pompe, en amortissant le son, et depuis lequel partent des oscillations relevant du bruit qui sont à tout le moins plus faibles que celles partant de la membrane (6) de la pompe, et par le fait que ce dispositif de protection contre le bruit (13, 13a) présente une pièce d'écartement élastique (18) entre la pièce (15) formant paroi et la tête de bielle (10) ou une partie similaire de la bielle.
2. Pompe à membrane selon la revendication 1, caractérisée par le fait que la pièce d'écartement (18) est constituée par une bague élastique (16) en caoutchouc mousse ou en un matériau similaire qui est élastique et qui, de préference, amortit en même temps le son.
3. Pompe à membrane selon la revendication 1 ou 2, caractérisée par le fait que la pièce d'écartement élastique (18) se compose pour l'essentiel de saillies (23) ou de nervures ou similaires qui sont élastique:, qui sont situées à peu près perpendiculairement au plan du dispositif de protection contre le bruit (13a) et qui sont ménagées sur la pièce (15) formant paroi, laquelle est constituée de préférence par une plaque en forme de bague circulaire.
4. Pompe à membrane selon une ou plusieurs des revendications 1 à 3, caractérisée par le fait que la pièce d'écartement élastique (18), et, de préference, les saillies élastiques (23), est reliée ou sont reliées, respectivement, d'un seul tenant à la pièce élastique (15) formant paroi, et en particulier à la plaque, en constituant pour l'essentiel le dispositif de protection contre le bruit (13a).
5. Pompe à membrane selon une ou plusieurs des revendications 1 à 4, caractérisée par le fait que la pièce plate (15) formant paroi du dispositif de protection contre le bruit (13, 13a) est tendue avec une tension préalable dans le carter (2) de la pompe et sur la bielle (11), respectivement, d'une manière telle que la tension préalable de la pièce (15) formant paroi soit supérieure aux charges oscillatoires qui agissent sur cette pièce formant paroi et qui partent de la membrane de travail (6).
6. Pompe à membrane selon une ou plusieurs des revendications 1 à 5, caractérisée par le fait qu'en vue d'engendrer une tension préalable sur la pièce (15) formant paroi ou similaire, les pièces d'écartement élastique (18) qui sont disposées contre la pièce (15) formant paroi du dispositif de protection (13, 13a) présentent dans la position détendue une hauteur supérieure à la distance entre la face supérieure de la pièce (15) formant paroi et la face inférieure (17, 17a) de la tête de bielle (10).
7. Pompe à membrane selon une ou plusieurs des revendications 1 à 6, caractérisée par le fait que la surface d'appui de la bague élastique ou d'une pièce d'écartement similaire (18) s'étend presque jusqu'à la zone de serrage extérieure (19) de la pièce (15) formant paroi, et qu'elle repose de préference à cet endroit en formant amortisseur ou, le cas échéant, qu'elle lui est reliée.
8. Pompe à membrane selon une ou plusieurs des revendications 1 à 7, caractérisée par le fait que la tête de bielle (10) sert d'appui et de surface de serrage à la face de la bague élastique (16) ou similaire qui est opposée à la pièce (15) formant paroi du dispositif de protection contre le bruit (13), le diamètre (D) de la surface de la bague élastique (16) qui est voisine de la pièce (15) formant paroi etant de préférence légèrement supérieur au diamètre (d) de la surface de serrage (17) de la tête de bielle (10).
9. Pompe à membrane selon une ou plusieurs des revendications 1 à 8, caractérisée par le fait que la pièce (15) formant paroi du dispositif de protection contre le bruit (13) présente de la matière s'étendant en excès, à peu près dans la direction radiale, et qu'elle est de préférence conformée à peu près en assiette, du moins dans la position de montage, avantageusement dans la direction de la chambre (14) de la manivelle.
EP89118380A 1988-11-10 1989-10-04 Pompe à membrane Expired - Lifetime EP0367988B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3838141 1988-11-10
DE3838141A DE3838141C2 (de) 1988-11-10 1988-11-10 Membranpumpe

Publications (2)

Publication Number Publication Date
EP0367988A1 EP0367988A1 (fr) 1990-05-16
EP0367988B1 true EP0367988B1 (fr) 1992-08-05

Family

ID=6366888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89118380A Expired - Lifetime EP0367988B1 (fr) 1988-11-10 1989-10-04 Pompe à membrane

Country Status (4)

Country Link
US (1) US4993925A (fr)
EP (1) EP0367988B1 (fr)
JP (1) JP2848872B2 (fr)
DE (2) DE3838141C2 (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5092224A (en) * 1990-01-26 1992-03-03 Thomas Industries Conical rod piston
DE4119228C2 (de) * 1991-06-14 1995-04-13 Knf Neuberger Gmbh Membranpumpe
DE4328559C5 (de) * 1993-08-25 2004-11-25 Knf-Neuberger Gmbh Membranpumpe mit wenigstens zwei Membranen
US5437218A (en) * 1994-04-04 1995-08-01 Pcm Pompes Diaphragm pump having variable displacement
DE19519763C2 (de) * 1995-05-30 1999-08-05 Pari Gmbh Inhalationsgerätekompressor mit verbessertem Membransatz
EP1048849B1 (fr) * 1996-06-07 2005-03-16 Hydro Leduc Pompe à haute pression pour tous liquides
US5894784A (en) * 1998-08-10 1999-04-20 Ingersoll-Rand Company Backup washers for diaphragms and diaphragm pump incorporating same
KR100291161B1 (ko) * 1998-08-14 2001-06-01 김성철 다이어프램펌프
FR2794811B1 (fr) * 1999-06-08 2003-02-07 Peugeot Citroen Automobiles Sa Pompe a haute pression a etancheite perfectionnee
US6279421B1 (en) * 1999-08-26 2001-08-28 Gast Manufacturing, Inc. Connecting rod assembly with reduced length variability
ATE368181T1 (de) * 2001-01-02 2007-08-15 Medela Holding Ag Membranpumpe
JP2005344569A (ja) * 2004-06-01 2005-12-15 Toyota Industries Corp ポンプ
JP4114639B2 (ja) * 2004-06-01 2008-07-09 株式会社豊田自動織機 ダイヤフラム型ポンプ
EP2196229A1 (fr) * 2008-12-12 2010-06-16 Koninklijke Philips Electronics N.V. Tête motorisée pour tire-lait
US8708308B2 (en) * 2009-08-05 2014-04-29 Itt Manufacturing Enterprises, Inc. Sealing arrangement for a diaphragm valve
TW201139849A (en) * 2010-05-13 2011-11-16 Tricore Corp Inflating pump with integrally formed air bag and inlet/outlet valve
EP2921705B1 (fr) * 2014-03-20 2018-09-05 Annovi Reverberi S.p.A. Groupe plaque-diaphragme pour pompes à membrane
EP3146211A4 (fr) * 2014-05-20 2018-02-14 Ying Lin Cai Structure de rondelle excentrique pour pompe à diaphragme de compression à effets multiples
US9677557B2 (en) * 2015-01-20 2017-06-13 Hao Hsu Sleeping system
CN105626487B (zh) * 2015-12-24 2018-04-20 广东基泰智能设备有限公司 无脉动柱塞泵

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE349867A (fr) *
US3263618A (en) * 1964-04-21 1966-08-02 Gen Motors Corp Windshield washer pump
US3877842A (en) * 1970-01-21 1975-04-15 Itt Air pumps
JPS50155606U (fr) * 1974-05-30 1975-12-23
DE2502566C3 (de) * 1975-01-23 1980-03-13 Erich 7812 Bad Krozingen Becker Membranpumpe
US4035107A (en) * 1975-04-07 1977-07-12 Durotech Co. Pump system for high pressure abrasive liquids
DE2618786C2 (de) * 1976-04-29 1978-10-12 Bau- Und Industrietechnik Gmbh, 2000 Hamburg Verdrängungspumpe mit Membran
JPS5592089U (fr) * 1978-12-20 1980-06-25
DE3005834A1 (de) * 1980-02-16 1981-09-03 Becker, Erich, 7812 Bad Krozingen Pumpe mit von druckdifferenzen des gasfoermigen foerdermediums gesteuerten ventilen
FR2517378B1 (fr) * 1981-11-28 1988-03-11 Becker Erich Pompe a membrane

Also Published As

Publication number Publication date
JPH02176172A (ja) 1990-07-09
DE3838141C2 (de) 1998-12-24
EP0367988A1 (fr) 1990-05-16
US4993925A (en) 1991-02-19
DE3838141A1 (de) 1990-05-17
JP2848872B2 (ja) 1999-01-20
DE58901989D1 (de) 1992-09-10

Similar Documents

Publication Publication Date Title
EP0367988B1 (fr) Pompe à membrane
DE60129256T2 (de) Gasauslass für einen kolbenverdichter
DE3820929A1 (de) Ventilplatte
DE102004011123A1 (de) Pumpe zur Förderung eines Abgasnachbehandlungsmediums, insbesondere einer Harnstoff-Wasser-Lösung, für Dieselmotoren
DE10302303A1 (de) Saugventilzusammenbau eines Kolbenverdichters
DE102017007999B4 (de) Schaltbares Hydrolager
EP1831558B1 (fr) Compresseur lineaire et unite d'entrainement pour ledit compresseur
EP1831559A1 (fr) Compresseur lineaire et unite d'entrainement pour ledit compresseur
DE4213798C2 (de) Radialkolbenpumpe, insbesondere Kraftstoffpumpe für Verbrennungsmotoren
EP3542062A1 (fr) Compresseur de fluide de refroidissement
DE3100118A1 (de) Auslassventil
DE10041431A1 (de) Kompressorventilanordnung
DE102018102120B4 (de) Membranpumpe
DE2817123A1 (de) Hermetik-motorverdichter
DE4119228C2 (de) Membranpumpe
EP0756102A1 (fr) Support pour moteurs de véhicules automobiles
DE3801137A1 (de) Druckmittelbetaetigter stellmotor
DE102007005019A1 (de) Membranpumpe
DE102006060645B4 (de) Motor-Pumpenaggregat
EP1431609A2 (fr) Amortisseur de vibrations de torsion
EP0939860A1 (fr) Pompe a membrane
DE102005035726A1 (de) Linearpumpe
DE602005004987T2 (de) Auslassventil für Hubkolbenkompressor
EP1555434B1 (fr) Pompe à membrane
DE29620094U1 (de) Membranpumpe

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: 19900309

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB LI

17Q First examination report despatched

Effective date: 19910207

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB LI

REF Corresponds to:

Ref document number: 58901989

Country of ref document: DE

Date of ref document: 19920910

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19921031

Ref country code: CH

Effective date: 19921031

ET Fr: translation 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

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GB

Payment date: 20080924

Year of fee payment: 20

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

Ref country code: DE

Payment date: 20080929

Year of fee payment: 20

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

Ref country code: FR

Payment date: 20080925

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20091003

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 EXPIRATION OF PROTECTION

Effective date: 20091003