Global Patent Index - EP 0749790 B1

EP 0749790 B1 2000-08-23 - Apparatus for casting a directionally solidified article

Title (en)

Apparatus for casting a directionally solidified article

Title (de)

Vorrichtung zur Herstellung eines gerichtet erstarrten Giesskörpers

Title (fr)

Appareil pour la fabrication par coulage d'une pièce solidifiée directionellement

Publication

EP 0749790 B1 (DE)

Application

EP 96810192 A

Priority

  • DE 19522266 A
  • DE 19539770 A

Abstract (en)

[origin: EP0749790A1] In the prodn. of a casting (20) in a vacuum chamber (2), a mould (12) with molten alloy is transferred, through a hole (7) in a separating baffle (3), from a heating chamber (4) into a cooling chamber (5) in which the alloy solidifies in an oriented manner. The method is characterised by the fact that below the baffle(3) the mould is additionally cooled from outside by means of a gas flow. Also claimed is an appts. for implementation of the method. The appts. is characterised by the presence of means for producing and directing a gas flow in the cooling chamber below the baffle (3). The gas used for cooling the mould is an inert gas such as, in particular, argon or helium. The gas is introduced into the cooling chamber (5) after entry of the bottom of the mould (12). The gas is directed in the direction of the mould surface, and is then removed from the vacuum chamber (2). The gas is cooled, filtered and again introduced into the cooling chamber.

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

B22D 27/04

IPC 8 full level (invention and additional information)

F01D 5/12 (2006.01); B22D 23/00 (2006.01); B22D 27/04 (2006.01); C22C 19/03 (2006.01)

CPC (invention and additional information)

B22D 27/045 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

EP 0749790 A1 19961227; EP 0749790 B1 20000823; EP 0749790 B2 20041103; DE 19539770 A1 19970102; DE 59605783 D1 20000928; EA 000040 B1 19980226; EA 199600020 A2 19961231; EA 199600020 A3 19970331; JP 3919256 B2 20070523; JP H0910919 A 19970114; US 5921310 A 19990713

INPADOC legal status


2016-08-09 [REG DE R081] CHANGE OF APPLICANT/PATENTEE

- Owner name: GENERAL ELECTRIC TECHNOLOGY GMBH, CH

- Free text: FORMER OWNER: ALSTOM TECHNOLOGY LTD., BADEN, CH

- Document: DE 59605783

2016-08-09 [REG DE R082] CHANGE OF REPRESENTATIVE

- Document: DE 59605783

- Representative's name: ROESLER, UWE, DIPL.-PHYS.UNIV., DE

2016-04-29 [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 EXPIRATION OF PROTECTION

- Effective date: 20160325

2016-04-20 [REG GB PE20] PATENT EXPIRED AFTER TERMINATION OF 20 YEARS

- Expiry date: 20160325

2016-03-26 [REG DE R071] EXPIRY OF RIGHT

- Document: DE 59605783

2015-05-29 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: GB

- Payment date: 20150319

- Year of fee payment: 20

2015-05-29 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FR

- Payment date: 20150319

- Year of fee payment: 20

2015-04-30 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20150320

- Year of fee payment: 20

2015-04-30 [PGFP IT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: IT

- Payment date: 20150327

- Year of fee payment: 20

2005-09-23 [ET3] FR: TRANSLATION FILED ** DECISION CONCERNING OPPOSITION

2005-02-23 [GBTA] GB: TRANSLATION OF AMENDED EP PATENT FILED (GB SECTION 77(6)(B)/1977)

2004-11-03 [27A] MAINTAINED AS AMENDED

- Effective date: 20041103

2004-11-03 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B2

- Designated State(s): DE FR GB IT

2004-03-31 [RTI2] TITLE (CORRECTION)

- Free text: APPARATUS FOR CASTING A DIRECTIONALLY SOLIDIFIED ARTICLE

2004-03-24 [RTI2] TITLE (CORRECTION)

- Free text: APPARATUS FOR CASTING A DIRECTIONALLY SOLIDIFIED ARTICLE

2004-01-14 [RAP2] TRANSFER OF RIGHTS OF AN EP GRANTED PATENT

- Owner name: ALSTOM TECHNOLOGY LTD

2003-08-22 [REG FR CA] CHANGE OF ADDRESS

2003-08-22 [REG FR CD] CHANGE OF NAME OR COMPANY NAME

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

2001-12-12 [RAP2] TRANSFER OF RIGHTS OF AN EP GRANTED PATENT

- Owner name: ALSTOM (SCHWEIZ) AG

2001-07-18 [26] OPPOSITION FILED

- Opponent name: SIEMENS AG

- Effective date: 20010523

2000-12-27 [RAP2] TRANSFER OF RIGHTS OF AN EP GRANTED PATENT

- Owner name: ALSTOM POWER (SCHWEIZ) AG

2000-11-24 [ET] FR: TRANSLATION FILED

2000-11-22 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20001031

2000-11-10 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: DE DOMINICIS & MAYER S.R.L.

2000-09-28 [REF] CORRESPONDS TO:

- Document: DE 59605783 20000928

2000-08-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE FR GB IT

2000-06-28 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: ABB ALSTOM POWER (SCHWEIZ) AG

1998-11-04 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19980921

1997-07-09 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19970509

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

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT