Global Patent Index - EP 1240454 A1

EP 1240454 A1 2002-09-18 - LAYING OF UNDERSEA PIPES

Title (en)

LAYING OF UNDERSEA PIPES

Title (de)

VERLEGEN VON UNTERWASSERROHRLEITUNGEN

Title (fr)

POSE DE CONDUITES SOUS-MARINES

Publication

EP 1240454 A1 (EN)

Application

EP 99962304 A

Priority

GB 9904237 W

Abstract (en)

[origin: WO0150058A1] Method and apparatus for connecting first (102) and second (104) sections of double-walled pipe (10) comprising joining the inner pipes of the first and second sections, sliding the outer pipe of the second section relative to the inner pipe of that section such that it meets the outer pipe of the first section, and welding the outer pipes of the first and second sections. The inner insulation layer can also be translated together with the outer pipe, avoiding the need to insert additional insulation sections. It is particularly preferred that bulkheads (112) are fitted between the outer and inner pipes, the bulkheads comprising resilient annular members compressed longitudinally with respect to the pipe. These bulkheads (112) provide a frictional force which holds the outer (104) and inner pipes (102) in place but which can be overcome to slide the outer pipe relative to the inner. In addition, novel double-walled pipe sections suitable for use in this method are disclosed.

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

F16L 39/00; F16L 1/19; F16L 7/02; F16L 9/18; F16L 13/02

IPC 8 full level (invention and additional information)

F16L 1/18 (2006.01)

CPC (invention and additional information)

F16L 1/18 (2013.01)

Citation (search report)

See references of WO 0150058A1

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

WO 0150058 A1 20010712; AU 1868300 A 20010716; BR 9917595 A 20020806; EP 1240454 A1 20020918

INPADOC legal status


2004-08-04 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20040203

2003-03-12 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030123

2002-09-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020703

2002-09-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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

2002-09-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL PAYMENT 20020703;LT PAYMENT 20020703;LV PAYMENT 20020703;MK PAYMENT 20020703;RO PAYMENT 20020703;SI PAYMENT 20020703