Global Patent Index - EP 1084005 A1

EP 1084005 A1 2001-03-21 - METHOD FOR BENDING A DOUBLE PIPE, IN PARTICULAR A BIMETALIC PIPE

Title (en)

METHOD FOR BENDING A DOUBLE PIPE, IN PARTICULAR A BIMETALIC PIPE

Title (de)

VERFAHREN ZUM BIEGEN EINER DOPPELROHRE , INBESONDERE EINE BIMETALLISCHE ROHRE

Title (fr)

PROCEDE PERMETTANT DE CINTRER UN TUYAU DOUBLE ET, NOTAMMENT, UN TUYAU BIMETALLIQUE

Publication

EP 1084005 A1 (EN)

Application

EP 99924597 A

Priority

  • BE 9900070 W
  • BE 9800434 A

Abstract (en)

[origin: WO9964180A1] A method for forming at least one bend in a double pipe is disclosed. The double pipe comprises an inner pipe located within an outer pipe. The method essentially comprises the following steps. In a first step, the inner pipe (10) is filled with a compressible material (11). The compressible material (11) is compressed in the inner pipe. In a second step, the double pipe is bent using a pipe bending tool. Then, the filling material (11) is removed from the inner pipe. In a further step, an expanding force is applied to the inner pipe (10) until the outer pipe (12) has undergone a predetermined expansion.

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

B21D 9/15; B21D 26/02

IPC 8 full level (invention and additional information)

B21D 9/15 (2006.01); B21D 26/02 (2011.01); B21D 26/051 (2011.01)

CPC (invention and additional information)

B21D 9/18 (2013.01); B21D 9/15 (2013.01); B21D 26/051 (2013.01)

Citation (search report)

See references of WO 9964180A1

Designated contracting state (EPC)

BE DE FR GB IT

EPO simple patent family

WO 9964180 A1 19991216; AU 4124799 A 19991230; BE 1012024 A3 20000404; EP 1084005 A1 20010321

INPADOC legal status


2002-10-30 [18R] REFUSED

- Effective date: 20020310

2001-10-24 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010912

2001-03-21 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001228

2001-03-21 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE DE FR GB IT