Global Patent Index - EP 0697069 B1

EP 0697069 B1 2000-05-24 - FRICTION VACUUM PUMP WITH PUMP SECTIONS OF DIFFERENT DESIGNS

Title (en)

FRICTION VACUUM PUMP WITH PUMP SECTIONS OF DIFFERENT DESIGNS

Title (de)

REIBUNGSVAKUUMPUMPE MIT UNTERSCHIEDLICH GESTALTETEN PUMPENABSCHNITTEN

Title (fr)

POMPE A VIDE ROTATIVE A FRICTION COMPORTANT DES SECTIONS DE CONCEPTION DIFFERENTE

Publication

EP 0697069 B1 (DE)

Application

EP 94913098 A

Priority

  • DE 4314418 A
  • EP 9401011 W

Abstract (en)

[origin: EP0874159A2] The inlet section of the friction vacuum pump consists of a turbomolecular pumping stator (5) and rotor (8) with respective blades (14, 15). The succeeding stage has annular discs (16) fixed to the rotor and co-operating with other annular discs (17) on pref. one-piece stator rings (6). Helical projections (18) between grooves (19) on the latter discs are shaped so as to promote a continuous flow of gas from the inlet flange (12) mated with the vacuum vessel to the outlet (13). The shaft (10) is rotated by a motor (11).

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

F04D 19/04; F04D 17/16

IPC 8 full level (invention and additional information)

F04D 17/16 (2006.01); F04D 19/04 (2006.01)

CPC (invention and additional information)

F04D 19/04 (2013.01); F04D 17/168 (2013.01); F04D 19/046 (2013.01); F04D 23/008 (2013.01)

Designated contracting state (EPC)

CH DE FR GB IT LI

EPO simple patent family

DE 4314418 A1 19941110; EP 0697069 A1 19960221; EP 0697069 B1 20000524; EP 0874159 A2 19981028; EP 0874159 A3 19981118; JP H08511071 A 19961119; US 5695316 A 19971209; WO 9425760 A1 19941110

INPADOC legal status


2005-03-31 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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- Effective date: 20050331

2003-01-10 [REG FR ST] NOTIFICATION OF LAPSE

2002-11-29 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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

- Effective date: 20021129

2002-11-20 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20020331

2002-11-15 [REG CH PL] PATENT CEASED

2002-10-01 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2002-03-31 [PG25 CH] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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

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2002-03-31 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GB

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

- Effective date: 20020331

2002-03-31 [PG25 LI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: LI

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

- Effective date: 20020331

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-05-16 [26N] NO OPPOSITION FILED

2001-02-22 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2001-02-19 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2001-02-16 [PGFP CH] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20010216

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2001-02-08 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Year of fee payment: 8

2000-09-15 [ET] FR: TRANSLATION FILED

2000-08-09 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20000717

2000-07-31 [REG CH NV] NEW AGENT

- Representative's name: ISLER & PEDRAZZINI AG

2000-07-10 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: BARZANO' E ZANARDO MILANO S.P.A.

2000-06-29 [REF] CORRESPONDS TO:

- Document: DE 59409375 20000629

2000-05-31 [REG CH EP] ENTRY IN THE NATIONAL PHASE

2000-05-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): CH DE FR GB IT LI

1998-10-28 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: LEYBOLD VAKUUM GMBH

1996-07-10 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19960528

1996-02-21 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19950930

1996-02-21 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): CH DE FR GB IT LI