EP 1240406 A1 20020918 - 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
Application
Priority
- SE 0002200 W 20001110
- SE 9904323 A 19991126
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
IPC 8 full level
E21B 17/042 (2006.01); F16L 15/06 (2006.01)
CPC (source: EP)
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
DOCDB simple family (publication)
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
DOCDB simple family (application)
SE 0002200 W 20001110; AU 1746801 A 20001110; BR 0015602 A 20001110; CA 2392411 A 20001110; EP 00980172 A 20001110; JP 2001540011 A 20001110; SE 9904323 A 19991126