Global Patent Index - EP 0750119 B1

EP 0750119 B1 2000-05-10 - Pump impeller

Title (en)

Pump impeller

Title (de)

Pumpenlaufrad

Title (fr)

Rouet de pompe

Publication

EP 0750119 B1 (DE)

Application

EP 95117565 A

Priority

DE 19521768 A

Abstract (en)

[origin: EP0750119A1] The rotor is fitted to a centrifugal pump, especially a submerged pump, and has two curved blades (5,6) which are fixed to one rotor disc near the hub. Both blades project freely into the pump volume on the suction side, and are not attached to another rotor disc. One (5) of the blades has a greater thickness in the region (5b) which the incident fluid first encounters, especially the blade leading edge (5a), than the corresponding dimension on the second blade. The thickening (V) may be arranged on the side of the blade which faces away from the rotor axis, and may merge into the frontal curvature of the blade leading edge.

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

F04D 29/22; F04D 29/24

IPC 8 full level (invention and additional information)

F04D 29/22 (2006.01); F04D 29/24 (2006.01)

CPC (invention and additional information)

F04D 29/225 (2013.01); F04D 29/242 (2013.01); F05C 2225/00 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

EP 0750119 A1 19961227; EP 0750119 B1 20000510; DE 19521768 A1 19970102; US 5692880 A 19971202

INPADOC legal status


2015-10-30 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2015-06-02 [REG DE R119] APPLICATION DEEMED WITHDRAWN, OR IP RIGHT LAPSED, DUE TO NON-PAYMENT OF RENEWAL FEE

- Document: DE 59508322

2014-11-28 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2014-08-29 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2014-08-22 [REG FR ST] NOTIFICATION OF LAPSE

- Effective date: 20140731

2014-07-23 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20131108

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

2001-05-02 [26N] NO OPPOSITION FILED

2000-07-20 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: SOCIETA' ITALIANA BREVETTI S.P.A.

2000-06-15 [REF] CORRESPONDS TO:

- Document: DE 59508322 20000615

2000-06-09 [ET] FR: TRANSLATION FILED

2000-05-31 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20000510

2000-05-10 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE FR GB IT

1999-03-31 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19990215

1997-01-29 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19961205

1996-12-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT