Global patent index - EP 0988453 A1

EP 0988453 A1 2000-03-29 - SCREW SPINDLE VACUUM PUMP AND OPERATING METHOD

Title (en)

SCREW SPINDLE VACUUM PUMP AND OPERATING METHOD

Title (de)

SCHRAUBENSPINDELVAKUUMPUMPE UND VERFAHREN ZUM BETRIEB DERSELBEN

Title (fr)

POMPE A VIDE A VIS ET SON PROCEDE DE FONCTIONNEMENT

Publication

EP 0988453 A1 (DE)

Application

EP 98934953 A

Priority

  • DE 19724643 A
  • EP 9803544 W

Abstract (en)

[origin: DE19724643A1] The invention relates to a screw spindle vacuum pump with at least three sealed-off pumping chambers fitted one behind the other along each rotor. The invention also relates to a method for operating this compressor. Shortly before it opens onto delivery side of the pump, the last chamber on delivery side is brought almost to final compression pressure by preadmission. This is achieved by supplying a preadmission current at least five times greater than the suction mass flow rate. For this, the minimum ratio of outer compression to inner compression must be five.

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

F04C 29/04; F04C 18/16; F04C 29/00

IPC 8 full level (invention and additional information)

F04C 18/16 (2006.01); F04C 25/02 (2006.01); F04C 29/04 (2006.01)

CPC (invention and additional information)

F04C 29/04 (2013.01); F04C 2240/402 (2013.01)

Citation (search report)

See references of WO 9857067A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB IE IT LI NL PT SE

EPO simple patent family

DE 19724643 A1 19981217; AT 247780 T 20030915; CA 2293618 A1 19981217; CA 2293618 C 20070918; DK 0988453 T3 20031215; EP 0988453 A1 20000329; EP 0988453 B1 20030820; ES 2206958 T3 20040516; JP 2002504205 A 20020205; JP 4002304 B2 20071031; KR 100340166 B1 20020610; KR 20010013629 A 20010226; KR 20010013692 A 20010226; NO 327604 B1 20090831; NO 996129 A 19991210; NO 996129 D0 19991210; PT 988453 E 20040130; US 6273696 B1 20010814; WO 9857067 A1 19981217; ZA 9804959 B 19990412

INPADOC legal status

2016-10-31 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Ref Legal Event Code: PGFP

- Payment date: 20160628

- Year of fee payment: 19

2012-09-28 [PG25 SE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: SE

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100610

2011-09-30 [PG25 ES] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: ES

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100610

2011-08-31 [PG25 DK] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DK

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100630

2011-07-29 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GB

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100609

2011-07-29 [PG25 ES] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: ES

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20110705

2011-07-15 [REG ES FD2A] ANNOUNCEMENT OF LAPSE IN SPAIN

- Ref Legal Event Code: FD2A

- Effective date: 20110715

2011-06-30 [PG25 BE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: BE

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100630

2011-05-31 [PG25 AT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: AT

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100609

2011-05-31 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FR

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100630

2011-05-31 [PG25 NL] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: NL

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20110101

2011-04-29 [PG25 LI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: LI

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100630

2011-04-29 [PG25 CH] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: CH

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100630

2011-03-31 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100609

2011-03-18 [REG FR ST] NOTIFICATION OF LAPSE

- Ref Legal Event Code: ST

- Effective date: 20110228

2011-02-28 [PG25 PT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: PT

- Ref Legal Event Code: PG25

- Free Format Text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20101209

2011-02-23 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Ref Legal Event Code: GBPC

- Effective date: 20100609

2011-02-01 [EUG] SE: EUROPEAN PATENT HAS LAPSED

- Ref Legal Event Code: EUG

2011-01-31 [REG DK EBP] PATENT LAPSED

- Ref Legal Event Code: EBP

2011-01-31 [REG CH PL] PATENT CEASED

- Ref Legal Event Code: PL

2011-01-12 [REG NL V1] LAPSED BECAUSE OF NON-PAYMENT OF THE ANNUAL FEE

- Ref Legal Event Code: V1

- Effective date: 20110101

2010-12-31 [BERE] BE: LAPSED

- Owner name: *STERLING FLUID SYSTEMS GERMANY G.M.B.H.

- Ref Legal Event Code: BERE

- Effective date: 20100630

2010-12-17 [REG PT MM4A] ANNULMENT/LAPSE DUE TO NON-PAYMENT OF FEES, SEARCHED AND EXAMINED PATENT

- Ref Legal Event Code: MM4A

- Free Format Text: LAPSE DUE TO NON-PAYMENT OF FEES

- Effective date: 20101209

2010-04-30 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FR

- Ref Legal Event Code: PGFP

- Payment date: 20090618

- Year of fee payment: 12

2010-04-30 [PGFP IT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: IT

- Ref Legal Event Code: PGFP

- Payment date: 20090627

- Year of fee payment: 12

2009-11-30 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: GB

- Ref Legal Event Code: PGFP

- Payment date: 20090623

- Year of fee payment: 12

2009-10-30 [PGFP CH] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: CH

- Ref Legal Event Code: PGFP

- Payment date: 20090624

- Year of fee payment: 12

2009-10-30 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FR

- Ref Legal Event Code: PGFP

- Payment date: 20090618

- Year of fee payment: 12

2009-09-30 [PGFP BE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: BE

- Ref Legal Event Code: PGFP

- Payment date: 20090623

- Year of fee payment: 12

2009-08-31 [PGFP AT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: AT

- Ref Legal Event Code: PGFP

- Payment date: 20090622

- Year of fee payment: 12

2009-08-31 [PGFP PT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: PT

- Ref Legal Event Code: PGFP

- Payment date: 20090529

- Year of fee payment: 12

2009-08-31 [PGFP SE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: SE

- Ref Legal Event Code: PGFP

- Payment date: 20090623

- Year of fee payment: 12

2009-07-31 [PGFP DK] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DK

- Ref Legal Event Code: PGFP

- Payment date: 20090622

- Year of fee payment: 12

2009-07-31 [PGFP ES] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: ES

- Ref Legal Event Code: PGFP

- Payment date: 20090629

- Year of fee payment: 12

2009-07-31 [PGFP NL] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: NL

- Ref Legal Event Code: PGFP

- Payment date: 20090624

- Year of fee payment: 12

2004-08-11 [26N] NO OPPOSITION FILED

- Ref Legal Event Code: 26N

- Effective date: 20040524

2004-06-04 [ET] FR: TRANSLATION FILED

- Ref Legal Event Code: ET

2004-05-16 [REG ES FG2A] DEFINITIVE PROTECTION

- Ref Legal Event Code: FG2A

- Ref Document Number: 2206958

- Country of Ref Document: ES

- Kind Code of Ref Document: T3

2004-03-24 [REG IE FD4D] EUROPEAN PATENTS DESIGNATING IRELAND TREATED AS ALWAYS HAVING BEEN VOID

- Ref Legal Event Code: FD4D

2003-12-15 [REG DK T3] TRANSLATION OF EP PATENT

- Ref Legal Event Code: T3

2003-12-03 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Ref Legal Event Code: GBT

- Effective date: 20031106

2003-12-02 [REG SE TRGR] TRANSLATION OF GRANTED EP PATENT

- Ref Legal Event Code: TRGR

2003-09-30 [REG CH NV] NEW AGENT

- Ref Legal Event Code: NV

- Representative's name: SULZER MANAGEMENT AG

2003-09-25 [REF] CORRESPONDS TO:

- Ref Legal Event Code: REF

- Ref Document Number: 59809350

- Country of Ref Document: DE

- Date of Ref Document: 2003-09-25

- Kind Code of Ref Document: P

2003-09-17 [REG IE FG4D] EUROPEAN PATENTS GRANTED DESIGNATING IRELAND

- Ref Legal Event Code: FG4D

- Free Format Text: GERMAN

2003-08-29 [REG CH EP] ENTRY IN THE NATIONAL PHASE

- Ref Legal Event Code: EP

2003-08-20 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB IE IT LI NL PT SE

2003-08-20 [REG GB FG4D] EUROPEAN PATENT GRANTED

- Ref Legal Event Code: FG4D

- Free Format Text: NOT ENGLISH

2003-08-20 [PG25 CY] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: CY

- Ref Legal Event Code: PG25

- 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: 20030820

2003-08-20 [PG25 FI] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FI

- Ref Legal Event Code: PG25

- 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: 20030820

2003-08-20 [PG25 IE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IE

- Ref Legal Event Code: PG25

- 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: 20030820

2000-03-29 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991115

2000-03-29 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB IE IT LI NL PT SE