EP1651869B1 - Laufrad für pumpen - Google Patents

Laufrad für pumpen Download PDF

Info

Publication number
EP1651869B1
EP1651869B1 EP04738061A EP04738061A EP1651869B1 EP 1651869 B1 EP1651869 B1 EP 1651869B1 EP 04738061 A EP04738061 A EP 04738061A EP 04738061 A EP04738061 A EP 04738061A EP 1651869 B1 EP1651869 B1 EP 1651869B1
Authority
EP
European Patent Office
Prior art keywords
impeller
vanes
intermediate wall
sides
pump
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.)
Not-in-force
Application number
EP04738061A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1651869A1 (de
Inventor
Johann Guelich
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.)
Sulzer Pumpen AG
Original Assignee
Sulzer Pumpen 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 Sulzer Pumpen AG filed Critical Sulzer Pumpen AG
Priority to EP04738061A priority Critical patent/EP1651869B1/de
Publication of EP1651869A1 publication Critical patent/EP1651869A1/de
Application granted granted Critical
Publication of EP1651869B1 publication Critical patent/EP1651869B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance

Definitions

  • the invention relates to an impeller for pumps, in particular radial pumps, according to the preamble of claim 1, and a pump, in particular radial pumps, with such an impeller, and a method for operating such a pump.
  • the object of the invention is to provide an impeller for pumps, in particular radial pumps, available, even at specific speeds n q under 15 min. -1 enables a safe Axialschubaus protest, is comparatively inexpensive to produce, compared with a correspondingly sized closed or semi-open impeller has lower wheel friction losses and has a stable characteristic in the partial load range.
  • Another object of the invention is to provide a pump, in particular a radial pump, with such an impeller and a method for operating such a pump.
  • the blade outlet edges are chamfered on the suction side and / or on the suction side facing away from the intermediate wall.
  • a bevel of the blades on the suction side which falls to the suction side, while the blades have on the side facing away from the suction side of the intermediate wall axis-parallel exit edges.
  • the bevel of the blade outlet edges supports an orderly circulation, which is particularly advantageous in the partial load range.
  • FIGS. 1a and 1b show an embodiment of an impeller for pumps, in particular radial pumps, according to the present invention.
  • the impeller 1 of the embodiment comprises a hub 4, a Intermediate wall 6, on each of which one or more blades 2a, 2'a, 2b, 2'b are provided on both sides, and a passage 3, for example, as in the FIGS. 1a and 1b is shown formed in the form of five passage openings to distribute a desired flow on the blades 2a, 2'a, 2b, 2'b on both sides of the partition 6.
  • the passage openings are formed in the embodiment in a region adjacent to the hub 4 region of the impeller. Of course, other embodiments of the passage 3 are possible.
  • the impeller 1 has a suction side 5a, which is directed in the installed state of the impeller to a suction port of the pump, and the blades 2b, 2'b on the side facing away from the suction side 5b of the intermediate wall are above the passage 3, ie in the shown example via the five passage openings, connected to the suction side 5a.
  • the impeller 1 is open on both sides. But it is also possible that the impeller is only open on one side, for example, the suction side 5a or closed if necessary.
  • shortened blades 2'a, 2'b, so-called splitter vanes are provided between the passage openings and the wheel circumference.
  • the blade edges are chamfered at the outlet.
  • the blade outlet edges on the suction side 5a are double bevelled, once they have a chamfer to the suction side and in addition to a pressure-side profiling (taper). If necessary, as in the FIGS.
  • all blades 2a, 2'a, 2b, 2'b extend outward in the radial direction.
  • the blade entry angle ⁇ 1 and the blade exit angle ⁇ 2 are thus both 90 ° in a first approximation.
  • the actual blade outlet angle ⁇ 2 on the suction side 5 a is slightly smaller as a result of the pressure-side profiling of the blade outlet edge 90 °.
  • the blade entry angle ⁇ 1 is smaller than the blade exit angle ⁇ 2 and preferably less than or equal to 90 °.
  • the blades 2a, 2'a, 2b, 2'b at least on one side, preferably on the suction side 5a, a vane inlet width b 1 which is greater than the vane outlet width B2.
  • the blade inlet widths b 1 on the suction side 5 a and the side 5 b facing away from the suction side are expediently determined such that a good absorbency is obtained.
  • the ratio of the blade widths on the suction side 5a and the side facing away from the suction side 5b can be selected within wide limits. In a typical embodiment, the blade widths are approximately equal on both sides.
  • the impeller 1 has a specific speed n q in the range of 2 to 20 minutes. -1 to, preferably in the range of 7 - 12 min. -1 .
  • a spiral or an annular space can be generated, which are connected directly to the outlet or discharge nozzle 13.
  • the diffuser insert 17 By adapting the diffuser insert 17, it is possible to compensate for the usually considerable radial thrust in pumps with low specific speeds.
  • a guide and a cast housing can be used without interchangeable insert.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)
EP04738061A 2003-08-04 2004-07-05 Laufrad für pumpen Not-in-force EP1651869B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04738061A EP1651869B1 (de) 2003-08-04 2004-07-05 Laufrad für pumpen

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03405575 2003-08-04
EP04738061A EP1651869B1 (de) 2003-08-04 2004-07-05 Laufrad für pumpen
PCT/CH2004/000420 WO2005012732A1 (de) 2003-08-04 2004-07-05 Laufrad für pumpen

Publications (2)

Publication Number Publication Date
EP1651869A1 EP1651869A1 (de) 2006-05-03
EP1651869B1 true EP1651869B1 (de) 2008-02-20

Family

ID=34112505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04738061A Not-in-force EP1651869B1 (de) 2003-08-04 2004-07-05 Laufrad für pumpen

Country Status (7)

Country Link
US (1) US8444370B2 (zh)
EP (1) EP1651869B1 (zh)
CN (1) CN100449155C (zh)
AT (1) ATE386885T1 (zh)
BR (1) BRPI0413265B1 (zh)
DE (1) DE502004006266D1 (zh)
WO (1) WO2005012732A1 (zh)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4935048B2 (ja) * 2005-10-27 2012-05-23 日本電産株式会社 遠心ファン
WO2009070599A1 (en) * 2007-11-27 2009-06-04 Emerson Electric Co. Bi-directional cooling fan
US8398361B2 (en) 2008-09-10 2013-03-19 Pentair Pump Group, Inc. High-efficiency, multi-stage centrifugal pump and method of assembly
US20100061841A1 (en) * 2008-09-11 2010-03-11 Visintainer Robert J Froth handling pump
US8221070B2 (en) * 2009-03-25 2012-07-17 Woodward, Inc. Centrifugal impeller with controlled force balance
FR2945330B1 (fr) * 2009-05-11 2011-07-15 Snecma Pompe centrifuge a double echappement.
ITFI20120210A1 (it) * 2012-10-15 2014-04-16 Nuovo Pignone Srl "high efficiency low specific speed centrifugal pump"
CA2915631C (en) 2013-06-21 2020-06-02 Flow Control Llc. Debris removing impeller backvane
EP3366926B1 (en) * 2017-02-22 2020-12-02 Borgwarner Inc. Compressor impeller with curved ribs on the back side of the backplate
US10851801B2 (en) 2018-03-02 2020-12-01 Ingersoll-Rand Industrial U.S., Inc. Centrifugal compressor system and diffuser
WO2020046799A1 (en) * 2018-08-27 2020-03-05 The Texas A&M University System High energy density turbomachines
CN110319053A (zh) * 2019-08-12 2019-10-11 烟台阳光泵业有限公司 开式叶轮及使用开式叶轮的小流量高扬程单级离心泵
US11136989B2 (en) * 2019-08-26 2021-10-05 Ruhrpumpen Sa De Cv Impeller for centrifugal radial pump
KR20210098012A (ko) * 2020-01-31 2021-08-10 엘지전자 주식회사 펌프
JP7375694B2 (ja) * 2020-07-15 2023-11-08 株式会社豊田自動織機 遠心圧縮機
CN112814913B (zh) * 2021-01-07 2023-05-05 新乡航空工业(集团)有限公司上海分公司 一种单进口双面叶轮离心泵
CN114320962A (zh) * 2021-11-10 2022-04-12 浙江环誉泵业科技有限公司 一种冷却风机
US11680578B1 (en) 2022-04-21 2023-06-20 Mxq, Llc Impeller for disc pump

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US564897A (en) * 1896-07-28 Half to john richards
US1867290A (en) * 1929-08-12 1932-07-12 Weil Pump Co Centrifugal pump
US2658455A (en) * 1948-02-26 1953-11-10 Laval Steam Turbine Co Impeller with center intake
US2557201A (en) * 1948-07-26 1951-06-19 Punt Simon Centrifugal fan
US3478691A (en) * 1967-12-27 1969-11-18 Us Navy Quiet multivane multirow impeller for centrifugal pumps
US3816020A (en) * 1972-10-19 1974-06-11 Selgo Pumps Inc Pump
US3944406A (en) * 1973-12-20 1976-03-16 Veb Chemieanlagenbau-Und Montagekombinat Centrifugal pump for pumping liquids with heavy gas content
US4060337A (en) 1976-10-01 1977-11-29 General Motors Corporation Centrifugal compressor with a splitter shroud in flow path
US4278399A (en) * 1979-06-21 1981-07-14 Kobe, Inc. Pumping stage for multi-stage centrifugal pump
US4400136A (en) * 1981-11-20 1983-08-23 Sancor Pump Co. Centrifugal pump impeller attachment
DE3147513A1 (de) * 1981-12-01 1983-06-09 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Radiales laufrad fuer kreiselpumpen
US4538959A (en) * 1982-11-01 1985-09-03 International Telephone & Telegraph Corp. Clean-in-place pump
CN1034044A (zh) * 1988-01-06 1989-07-19 杨惠亭 一种低比转数离心泵用的翼形叶轮
FI86333C (fi) * 1988-04-11 1992-07-10 Ahlstroem Oy Foerfarande och anordning foer separering av gas med pumpen ur mediet som skall pumpas.
US4890980A (en) * 1988-08-08 1990-01-02 Ingersoll-Rand Company Centrifugal pump
US4940385A (en) * 1989-04-25 1990-07-10 Gurth Max Ira Rotary disc pump
US4981413A (en) * 1989-04-27 1991-01-01 Ahlstrom Corporation Pump for and method of separating gas from a fluid to be pumped
FI94441B (fi) * 1990-08-14 1995-05-31 Ahlstroem Oy Menetelmä ja sovitelma massa- ja/tai lietesuspensioiden käsittelemiseksi

Also Published As

Publication number Publication date
ATE386885T1 (de) 2008-03-15
WO2005012732A1 (de) 2005-02-10
BRPI0413265B1 (pt) 2014-04-29
CN1833107A (zh) 2006-09-13
BRPI0413265A (pt) 2006-10-10
DE502004006266D1 (de) 2008-04-03
US8444370B2 (en) 2013-05-21
EP1651869A1 (de) 2006-05-03
CN100449155C (zh) 2009-01-07
US20080213093A1 (en) 2008-09-04

Similar Documents

Publication Publication Date Title
EP1651869B1 (de) Laufrad für pumpen
EP1478828B1 (de) Rezirkulationsstruktur für turboverdichter
EP1530670B1 (de) Rezirkulationsstruktur für turboverdichter
DE69629606T2 (de) Pumpe mit einem verbesserten Durchflusskanal
EP0614014B1 (de) Radialverdichter mit einem strömungsstabilisierenden Gehäuse
EP2242931B1 (de) Zirkulationsstruktur für einen turboverdichter
DE69618678T3 (de) Pumpe für faserstoffsuspensionen mit mittel zur abtrennung von gas aus der suspension
DE4212653B4 (de) Verdichter
EP1609999A2 (de) Strömungsarbeitsmaschine
DE10330084B4 (de) Rezirkulationsstruktur für Turboverdichter
DE10327574B4 (de) Laufrad für eine Kraftstoffpumpe
DE102007056953B4 (de) Strömungsarbeitsmaschine mit Ringkanalwandausnehmung
DE102008011644A1 (de) Gehäusestrukturierung für Axialverdichter im Nabenbereich
DE3429085A1 (de) Fluessigkeitsringpumpe
DE102006048933A1 (de) Anordnung zur Strömungsbeeinflussung
EP2250376A1 (de) Strömungsmaschine mit verbesserter ausgleichskolbendichtung
EP2993357A2 (de) Radialverdichterstufe
WO2017093245A1 (de) Lüfterrad für einen axiallüfter
CH714432A2 (de) Radialverdichter.
EP3268616B1 (de) Selbstansaugende pumpe
WO2011079892A1 (de) Tauchpumpe
DE1601627C3 (de) Gekühlte Schaufel fur eine Stromungs maschine
DE1528717B2 (de) Vorrichtung zum ausgleich des axialschubes bei mehrstufigen kreiselpumpen
DE1161481B (de) Einrichtung zur Stabilisierung der Charakteristik von Kreiselradarbeitsmaschinen mit axialdurchstroemtem Laufrad
EP2927503B1 (de) Gasturbinenverdichter, Flugtriebwerk und Auslegungsverfahren

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: 20051227

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20060620

DAX Request for extension of the european patent (deleted)
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): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 502004006266

Country of ref document: DE

Date of ref document: 20080403

Kind code of ref document: P

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

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080531

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080220

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

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: 20080220

Ref country code: PL

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: 20080220

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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

Ref country code: CZ

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: 20080220

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080220

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080721

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080520

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080220

Ref country code: SK

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: 20080220

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

Ref country code: RO

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: 20080220

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: 20081121

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: MC

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

Effective date: 20080731

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

Ref country code: BG

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: 20080520

Ref country code: EE

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: 20080220

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: 20080731

Ref country code: CH

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

Effective date: 20080731

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

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080220

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

Ref country code: AT

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

Effective date: 20080705

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: 20080731

Ref country code: HU

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: 20080821

Ref country code: LU

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

Effective date: 20080705

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

Ref country code: TR

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: 20080220

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080521

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 502004006266

Country of ref document: DE

Representative=s name: MANITZ, FINSTERWALD & PARTNER GBR, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 502004006266

Country of ref document: DE

Owner name: SULZER MANAGEMENT AG, CH

Free format text: FORMER OWNER: SULZER PUMPEN AG, WINTERTHUR, CH

Ref country code: DE

Ref legal event code: R082

Ref document number: 502004006266

Country of ref document: DE

Representative=s name: MANITZ FINSTERWALD PATENTANWAELTE PARTMBB, DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20150618 AND 20150624

REG Reference to a national code

Ref country code: NL

Ref legal event code: SD

Effective date: 20150715

REG Reference to a national code

Ref country code: NL

Ref legal event code: SD

Effective date: 20150715

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

Owner name: SULZER MANAGEMENT AG, CH

Effective date: 20150828

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

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

Ref country code: NL

Payment date: 20160720

Year of fee payment: 13

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

Ref country code: FR

Payment date: 20160721

Year of fee payment: 13

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20170801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20180330

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: 20170801

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: 20170731

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

Ref country code: IT

Payment date: 20190730

Year of fee payment: 16

Ref country code: DE

Payment date: 20190719

Year of fee payment: 16

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

Ref country code: GB

Payment date: 20190719

Year of fee payment: 16

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502004006266

Country of ref document: DE

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

Effective date: 20200705

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: 20200705

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: 20210202

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: 20200705