EP 0994234 B1 20040519 - Rotating head of a drilling column with clutch coupling
Title (en)
Rotating head of a drilling column with clutch coupling
Title (de)
Drehbohrkopf mit Kupplungs-Verbindung
Title (fr)
Tête rotative de forage avec connecteur-embrayage
Publication
Application
Priority
IT RM980652 A 19981016
Abstract (en)
[origin: EP0994234A2] The present invention relates to a rotating head of a drilling column with clutch coupling. It comprises at least a motor assembly (2, 3) including in cascade a first hydraulic motor (7), a reduction set (8) with hydraulically commanded clutch coupling (15), a pinion (9) engaged with a crown gear (6) of a structure (1) supporting the rotating head. Even a single motor group (2) further bears, joined coaxially to the side opposite to the first hydraulic motor (7), a second hydraulic motor (10) and a reduction gear (11) connected to the pinion (9) to the side opposite the reduction set (8). <IMAGE>
IPC 1-7
IPC 8 full level
E21B 3/02 (2006.01)
CPC (source: EP US)
E21B 3/02 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0994234 A2 20000419; EP 0994234 A3 20010404; EP 0994234 B1 20040519; AT E267337 T1 20040615; DE 69917406 D1 20040624; IT 1302379 B1 20000905; IT RM980652 A1 20000416
DOCDB simple family (application)
EP 99830602 A 19990923; AT 99830602 T 19990923; DE 69917406 T 19990923; IT RM980652 A 19981016