Global Patent Index - EP 1000678 A2

EP 1000678 A2 2000-05-17 - Hollow profile or simular workpiece for deforming by high internal pressure, method of making a light metal profile and apparatus therefor

Title (en)

Hollow profile or simular workpiece for deforming by high internal pressure, method of making a light metal profile and apparatus therefor

Title (de)

Hohlprofil od.dgl. Werkstück zum Umformen durch Innenhochdruck, Verfahren zum Herstellen eines Profils aus Leichtmetall und Vorrichtung dafür

Title (fr)

Profilé creux ou pièce semblable pour déformation par haute pression interne, procédé pour fabriquer un profil en métal léger et dispositif utilisé pour sa fabrication

Publication

EP 1000678 A2 (DE)

Application

EP 99810965 A

Priority

DE 19851327 A

Abstract (en)

The hollow profiled workpiece is made of a metal alloy with end and side walls forming corners with different thicknesses. Internal high pressure is exerted by a fluid medium on the interior of the hollow profile. A thinner-walled end piece starting from an end section (20) is next to the thicker wall of the end (14) and side (16) walls forming a corner.

Abstract (de)

Bei einem Hohlprofil od. dgl. Werkstück aus einer Metallegierung mit Eckbereiche bildenden Stirn- und Seitenwänden unterschiedlicher Dicke, das durch in seinem Profilraum mittels eines strömbaren Wirkmedium erzeugten Innenhochdruck behandelt wird, schließt an die dickere Wandung der die Ecke bildenden Paarung aus Stirnwand und Seitenwand ein von der Ecke ausgehender Endabschnitt der dünneren Wandung an, dessen Dicke jener der dickeren Wandung etwa entspricht. Die Länge des Endabschnittes der dünneren Wandung beträgt etwa 10 bis 30 mm, bevorzugt 12 bis 20 mm, und die Dicke des Endabschnittes ist konstant; letzterer geht an einer Innenstufe in den dünneren Bereich der dünneren Wandung über. <IMAGE>

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

B21D 26/02

IPC 8 full level (invention and additional information)

B21C 23/14 (2006.01); B21D 26/02 (2011.01); B21D 26/033 (2011.01); B21D 26/053 (2011.01); E04C 3/06 (2006.01); E04C 3/04 (2006.01)

CPC (invention and additional information)

B21D 26/033 (2013.01); B21C 23/14 (2013.01); B21D 26/053 (2013.01); B21D 35/006 (2013.01); E04C 3/06 (2013.01); E04C 2003/0421 (2013.01); E04C 2003/043 (2013.01); E04C 2003/0465 (2013.01)

Citation (applicant)

EP 0620056 A1 19941019 - GEN MOTORS CORP [US]

Designated contracting state (EPC)

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

EPO simple patent family

DE 19851327 A1 20000511; EP 1000678 A2 20000517; EP 1000678 A3 20041027

INPADOC legal status


2009-09-16 [18W] WITHDRAWN

- Effective date: 20090811

2007-11-21 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20071019

2005-07-20 [AKX] PAYMENT OF DESIGNATION FEES

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

2005-06-22 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20050331

2004-10-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

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

2004-10-27 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Countries: AL LT LV MK RO SI

2001-11-14 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: ALCAN TECHNOLOGY & MANAGEMENT AG

2001-11-14 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: AUDI AG

2001-01-03 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: ALUSUISSE TECHNOLOGY & MANAGEMENT AG

2001-01-03 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: AUDI AG

2001-01-03 [RIN1] INVENTOR (CORRECTION)

- Inventor name: HEIN, JOERG

2001-01-03 [RIN1] INVENTOR (CORRECTION)

- Inventor name: KAMPMANN, LUTZ

2001-01-03 [RIN1] INVENTOR (CORRECTION)

- Inventor name: ZUBER, ARMIN

2001-01-03 [RIN1] INVENTOR (CORRECTION)

- Inventor name: HOFFMANN, ALEXANDER

2001-01-03 [RIN1] INVENTOR (CORRECTION)

- Inventor name: LEITERMANN, WULF

2001-01-03 [RIN1] INVENTOR (CORRECTION)

- Inventor name: KOGLIN, KLAUS

2000-05-17 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

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

2000-05-17 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI