EP 0748923 B1 20011128 - Drill rod
Title (en)
Drill rod
Title (de)
Bohrstange
Title (fr)
Tige de forage
Publication
Application
Priority
GB 9512250 A 19950616
Abstract (en)
[origin: EP0748923A2] A drill string for rock drilling has a drill rod with, at the bit end, a female threaded socket (4). The bit has a male threaded shank which (16) screws into the socket. The socket may additionally have an external male thread (3).
IPC 1-7
IPC 8 full level
E21B 17/042 (2006.01)
CPC (source: EP)
E21B 17/0426 (2013.01)
Designated contracting state (EPC)
DE FI GB IE SE
DOCDB simple family (publication)
EP 0748923 A2 19961218; EP 0748923 A3 19971029; EP 0748923 B1 20011128; DE 69617320 D1 20020110; DE 69617320 T2 20020725; GB 9512250 D0 19950816
DOCDB simple family (application)
EP 96109669 A 19960617; DE 69617320 T 19960617; GB 9512250 A 19950616