Global Patent Index - EP 0793554 B1

EP 0793554 B1 2000-02-23 - METHOD OF PRODUCING LIGHT METAL CASTINGS AND CASTING MOULD FOR CARRYING OUT THE METHOD

Title (en)

METHOD OF PRODUCING LIGHT METAL CASTINGS AND CASTING MOULD FOR CARRYING OUT THE METHOD

Title (de)

VERFAHREN ZUM HERSTELLEN VON GUSSSTÜCKEN AUS LEICHTMETALL UND GIESSFORM ZUR DURCHFÜHRUNG DES VERFAHRENS

Title (fr)

PROCEDE DE PRODUCTION DE PIECES COULEES EN METAL LEGER ET MOULE APPROPRIE POUR METTRE LEDIT PROCEDE EN OEUVRE

Publication

EP 0793554 B1 (DE)

Application

EP 96930074 A

Priority

  • DE 19531551 A
  • EP 9603691 W

Abstract (en)

[origin: DE19531551A1] The invention concerns a method of producing light metal castings, in particular cylinder heads, cylinder blocks and/or crankcases for internal combustion engines, using a sand-based dead mould which forms a moulding cavity (2) for the casting. The casting mould comprises outer parts (3), at least one core (7) and at least one pressure pig-forming feeder. The casting mould is provided with a gate for molten metal which fills the mould cavity (2) under the effect of gravity. A covering core (5), which comprises at least one feeder (6) and is impermeable to gases at least in partial areas, is placed on the casting mould. Immediately after the filling operation, the feeder (6) filled with molten metal is subjected to pressure by a pressurized gas.

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

B22D 27/13; B22D 27/09

IPC 8 full level (invention and additional information)

B22C 9/08 (2006.01); B22D 27/09 (2006.01)

CPC (invention and additional information)

B22C 9/082 (2013.01); B22D 27/09 (2013.01)

Citation (examination)

Designated contracting state (EPC)

AT DE ES FR GB IT

EPO simple patent family

DE 19531551 A1 19970306; AT 189867 T 20000315; CN 1164837 A 19971112; EP 0793554 A1 19970910; EP 0793554 B1 20000223; ES 2146016 T3 20000716; US 5954113 A 19990921; WO 9707914 A1 19970306

INPADOC legal status


2008-09-30 [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: 20010831

2005-08-22 [PG25 IT] 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: 20050822

2004-05-16 [REG ES FD2A] ANNOUNCEMENT OF LAPSE IN SPAIN

- Effective date: 20020911

2004-03-02 [PG25 DE] 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: 20040302

2003-06-06 [REG FR ST] NOTIFICATION OF LAPSE

2003-04-30 [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

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2002-08-12 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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- Year of fee payment: 7

2002-04-17 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20010822

2001-08-23 [PG25 ES] 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: 20010823

2001-08-22 [PG25 AT] 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: 20010822

2001-08-22 [PG25 GB] 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: 20010822

2001-02-07 [26N] NO OPPOSITION FILED

2000-08-31 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2000-08-24 [PGFP AT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2000-08-22 [PGFP ES] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2000-08-07 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

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2000-07-16 [REG ES FG2A] DEFINITIVE PROTECTION

- Document: ES 2146016 T3

2000-06-21 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20000525

2000-06-16 [ET] FR: TRANSLATION FILED

2000-05-19 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

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

2000-03-30 [REF] CORRESPONDS TO:

- Document: DE 59604490 20000330

2000-02-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): AT DE ES FR GB IT

2000-02-23 [REF] CORRESPONDS TO:

- Document: AT 189867 T 20000315

1998-11-25 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19981012

1997-09-10 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19970417

1997-09-10 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT DE ES FR GB IT