Global Patent Index - EP 0998359 A1

EP 0998359 A1 2000-05-10 - DEVICE AND METHOD FOR MOULDING A GROOVED STRUCTURE INTO A TUBULAR WORKPIECE

Title (en)

DEVICE AND METHOD FOR MOULDING A GROOVED STRUCTURE INTO A TUBULAR WORKPIECE

Title (de)

VORRICHTUNG UND VERFAHREN ZUM EINFORMEN EINER RILLENSTRUKTUR IN EIN ROHRFÖRMIGES WERKSTÜCK

Title (fr)

PROCEDE ET DISPOSITIF POUR MOULER UNE STRUCTURE CANNELEE DANS UNE PIECE TUBULAIRE

Publication

EP 0998359 A1 (DE)

Application

EP 98938688 A

Priority

  • DE 19731055 A
  • EP 9804148 W

Abstract (en)

[origin: DE19731055A1] According to the invention, a press roller device (1) for moulding a grooved structure inside a tubular workpiece (7) has several press rollers (4, 5, 6), said press rollers rotating around a form tool (2) and being staggered axially in relation to one another. At least two of the press rollers (4, 5) are driven in opposite directions to each other. This arrangement prevents the workpiece from twisting to a large extent.

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

B21H 7/18

IPC 8 full level (invention and additional information)

B21H 7/18 (2006.01); B21C 37/20 (2006.01); B21H 3/08 (2006.01); B21J 5/12 (2006.01)

CPC (invention and additional information)

B21J 5/12 (2013.01); B21C 37/207 (2013.01); B21H 7/187 (2013.01)

Citation (search report)

See references of WO 9903618A1

Designated contracting state (EPC)

DE FR GB IT NL SE

EPO simple patent family

DE 19731055 A1 19990121; EP 0998359 A1 20000510; JP 2001510093 A 20010731; US 6295854 B1 20011002; WO 9903618 A1 19990128

INPADOC legal status


2002-09-11 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020301

2001-12-12 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: DYNAFORM GMBH

2001-06-20 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010504

2000-05-10 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000221

2000-05-10 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT NL SE