Global Patent Index - EP 0994234 A2

EP 0994234 A2 20000419 - 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

EP 0994234 A2 20000419 (EN)

Application

EP 99830602 A 19990923

Priority

IT RM980652 A 19981016

Abstract (en)

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

E21B 3/02

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