Global Patent Index - EP 1240406 A1

EP 1240406 A1 2002-09-18 - A THREAD JOINT AND A MALE PORTION

Title (en)

A THREAD JOINT AND A MALE PORTION

Title (de)

SCHRAUBVERBINDUNG

Title (fr)

JOINT FILET ET L MENT M LE

Publication

EP 1240406 A1 (EN)

Application

EP 00980172 A

Priority

  • SE 0002200 W
  • SE 9904323 A

Abstract (en)

[origin: WO0138685A1] The present invention relates to a male portion a thread joint and a male portion for percussive drilling. The threaded joint includes at least one generally cylindrical external thread (14) and one generally cylindrical internal thread (15). The external thread (14) is provided on a spigot (12) intended to constitute an integral part of a first drill string component (10A, 10B). The threads comprise thread ends (21-24) provided in connection with associated full profile threads. The threads (14, 15) comprise end areas where each thread in a longitudinal section has its smallest radius (R). The generally cylindrical external thread (14) has a first axial length (L1) and the generally cylindrical internal thread (15) has a second axial length (L2), wherein the first axial length (L1) is shorter than the second axial length (L2) such that the both end areas (23, 24) of the cylindrical internal thread (15) do not contact the cylindrical external thread (14).

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

E21B 17/042

IPC 8 full level (invention and additional information)

E21B 17/042 (2006.01); F16L 15/06 (2006.01)

CPC (invention and additional information)

E21B 17/0426 (2013.01)

Citation (search report)

See references of WO 0138685A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 0138685 A1 20010531; AU 1746801 A 20010604; BR 0015602 A 20020709; CA 2392411 A1 20010531; EP 1240406 A1 20020918; JP 2003515021 A 20030422; SE 516874 C2 20020319; SE 9904323 D0 19991126; SE 9904323 L 20010527

INPADOC legal status


2004-12-08 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20040601

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

- Effective date: 20020425

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 TR