Global Patent Index - EP 0730094 B1

EP 0730094 B1 2000-04-19 - Variable level suction device

Title (en)

Variable level suction device

Title (de)

Variabler Pegelabsaugvorrichtung

Title (fr)

Système d'aspiration à niveau variable

Publication

EP 0730094 B1 (EN)

Application

EP 96301181 A

Priority

US 39847995 A

Abstract (en)

[origin: EP0730094A1] A variable level suction device used in conjunction with a transfer pump which transfers high-level radioactive liquid waste from a waste tank. The variable level suction device comprises an hydraulic housing and a telescoping pipe assembly comprising several pipe sections and mounted alongside the support column of the transfer pump. The telescoping innermost pipe section has a suction inlet, and the outermost telescoping pipe section is welded to the hydraulic housing which encloses an impeller assembly of either a submersible canned motor transfer pump or a lineshaft transfer pump. Suction ports in the hydraulic housing are located adjacent to the impeller assembly. Selective operation of the suction ports and the telescoping pipe sections allows the liquid waste to be suctioned either from the bottom of the waste tank or from a selected level in the waste tank between a free surface and a level near the suction inlet of the innermost pipe section of the telescoping pipe assembly. <IMAGE>

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

F04D 7/08; F04D 13/08; F04D 29/40

IPC 8 full level (invention and additional information)

F04D 7/08 (2006.01); F04D 13/08 (2006.01); F04D 13/10 (2006.01); F04D 29/40 (2006.01)

CPC (invention and additional information)

F04D 13/10 (2013.01); F04D 7/08 (2013.01); F04D 29/406 (2013.01)

Designated contracting state (EPC)

BE DE FR GB

EPO simple patent family

EP 0730094 A1 19960904; EP 0730094 B1 20000419; CA 2170833 A1 19960904; DE 69607779 D1 20000525; DE 69607779 T2 20001228

INPADOC legal status


2003-11-28 [REG FR ST] NOTIFICATION OF LAPSE

2003-10-31 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FR

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

- Effective date: 20031031

2003-10-15 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

2003-09-02 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DE

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

- Effective date: 20030902

2003-02-28 [PG25 BE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: BE

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

- Effective date: 20030228

2003-02-22 [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: 20030222

2002-03-07 [PGFP BE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: BE

- Payment date: 20020307

- Year of fee payment: 7

2002-02-01 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20020201

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2002-01-31 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20020131

- Year of fee payment: 7

2002-01-30 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Payment date: 20020130

- Year of fee payment: 7

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

2001-04-04 [26N] NO OPPOSITION FILED

2000-06-09 [ET] FR: TRANSLATION FILED

2000-05-25 [REF] CORRESPONDS TO:

- Document: DE 69607779 20000525

2000-04-19 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): BE DE FR GB

1999-09-01 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19990719

1997-05-02 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19970304

1996-09-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE DE FR GB