Global Patent Index - EP 0975875 A1

EP 0975875 A1 2000-02-02 - VACUUM PUMP SYSTEM FITTED WITH A LIQUID MECHANICAL PUMP

Title (en)

VACUUM PUMP SYSTEM FITTED WITH A LIQUID MECHANICAL PUMP

Title (de)

VAKUUMPUMPSYSTEM MIT EINER FLÜSSIGRINGPUMPE

Title (fr)

SYSTEME DE POMPE A VIDE AVEC POMPE A ANNEAU LIQUIDE

Publication

EP 0975875 A1 (DE)

Application

EP 98922706 A

Priority

  • DE 19715480 A
  • EP 9802174 W

Abstract (en)

[origin: DE19715480A1] Disclosed is a vacuum pump fitted with a liquid mechanical pump for pumping out gas, for example against the atmospheric pressure. According to the invention, the liquid of the liquid mechanical pump (6) is an inert fluid; the liquid mechanical pump (6) works together with a membrane-type primary pump (9) and is provided, on the inlet side, with a suction valve (3) controlled so as to open only when the temperature of the liquid mechanical pump (6) exceeds a lower threshold value.

IPC 1-7 (main, further and additional classification)

F04C 19/00; F04C 23/00; F04C 29/10

IPC 8 full level (invention and additional information)

F04C 19/00 (2006.01); F04C 23/00 (2006.01); F04C 28/24 (2006.01)

CPC (invention and additional information)

F04C 28/24 (2013.01); F04C 19/004 (2013.01); F04C 23/005 (2013.01)

Citation (search report)

See references of WO 9846885A1

Designated contracting state (EPC)

CH DE DK ES FR GB IT LI NL SE

EPO simple patent family

DE 19715480 A1 19981015; DE 19715480 C2 19990114; EP 0975875 A1 20000202; EP 0975875 B1 20030226; WO 9846885 A1 19981022

INPADOC legal status


2010-04-30 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2010-04-30 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2010-01-29 [PG25 CH] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2010-01-22 [REG FR ST] NOTIFICATION OF LAPSE

- Effective date: 20091231

2009-12-23 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20090414

2009-11-30 [REG CH PL] PATENT CEASED

2008-12-31 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20080423

- Year of fee payment: 11

2008-11-28 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2008-10-31 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2008-04-30 [PGFP CH] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Year of fee payment: 11

2006-10-27 [REG FR TP] TRANSMISSION OF PROPERTY

2006-08-16 [REG GB 732E] AMENDMENTS TO THE REGISTER IN RESPECT OF CHANGES OF NAME OR CHANGES AFFECTING RIGHTS (SECT. 32/1977)

2006-07-31 [REG CH NV] NEW AGENT

- Representative's name: PETER RUTZ

2006-07-31 [REG CH PUE] ASSIGNMENT

- Owner name: WERNER & PFLEIDERER LEBENSMITTELTECHNIK GMBH

- Free text: BUERGER, HEINZ-DIETER VAKUUM- UND VERFAHRENSTECHNIK#OBERPOERLITZER STR. 2#98693 ILMENAU (DE) -TRANSFER TO- WERNER & PFLEIDERER LEBENSMITTELTECHNIK GMBH#VON-RAUMER-STRASSE 8-18#91550 DINKELSBUEHL (DE)

2004-02-18 [26N] NO OPPOSITION FILED

- Effective date: 20031127

2003-09-12 [ET] FR: TRANSLATION FILED

2003-08-28 [PG25 ES] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Effective date: 20030828

2003-08-01 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

2003-06-04 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20030514

2003-05-26 [PG25 DK] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2003-05-26 [PG25 SE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Effective date: 20030526

2003-04-03 [REF] CORRESPONDS TO:

- Document: DE 59807317 P 20030403

2003-02-28 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2003-02-26 [AK] DESIGNATED CONTRACTING STATES:

- Designated State(s): CH DE DK ES FR GB IT LI NL SE

2003-02-26 [REG GB FG4D] EUROPEAN PATENT GRANTED

- Free text: NOT ENGLISH

2003-02-26 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Effective date: 20030226

2003-02-26 [PG25 NL] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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

- Effective date: 20030226

2002-10-16 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: BUERGER, HEINZ-DIETER VAKUUM- UND VERFAHRENSTECHNI

2002-09-25 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: BUERGER, HEINZ-DIETER

2001-08-16 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010620

2000-02-02 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991029

2000-02-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): CH DE DK ES FR GB IT LI NL SE