Global Patent Index - EP 0940201 A3

EP 0940201 A3 2001-04-18 - Method for swaging workpieces

Title (en)

Method for swaging workpieces

Title (de)

Verfahren zum Profilkneten von Werkstücken

Title (fr)

Procédé de rétreindre de pièces

Publication

EP 0940201 A3 (DE)

Application

EP 99103372 A

Priority

DE 19809674 A

Abstract (en)

[origin: EP0940201A2] The goods (2) are processed in a station with pairs of opposite forging dies (4), charged by rams (5). Rollers (7) moveable relative to outer guide surfaces of the rams, engage on these surfaces in pairs and after each other. Two pairs of die rams are moved in radial direction via two pairs of diametrically opposite rollers, and the radial impact directions of both pairs cross each other at right angles. The edge lengths of the dies are longer than the finished length per working process, of each work piece.

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

B21J 7/16; B21J 7/14

IPC 8 full level (invention and additional information)

B21J 7/16 (2006.01)

CPC (invention and additional information)

B21J 7/16 (2013.01)

Citation (search report)

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

EP 0940201 A2 19990908; EP 0940201 A3 20010418; DE 19809674 A1 19990909; US 6094962 A 20000801

INPADOC legal status


2003-03-12 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020903

2002-01-09 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: AT CH DE FR GB IT LI

2001-04-18 [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

2001-04-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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

2001-04-18 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7B 21J 7/16 A, 7B 21J 7/14 B

1999-09-08 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990304

1999-09-08 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

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

1999-09-08 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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