EP 0711377 B1 19970507 - JAW CLAMP FOR A MECHANICAL OR HYDRAULIC ROD LIFTER
Title (en)
JAW CLAMP FOR A MECHANICAL OR HYDRAULIC ROD LIFTER
Title (de)
BACKENKLEMME FÜR EINEN MECHANISCHEN ODER HYDRAULISCHEN STANGENHEBER
Title (fr)
PINCE A MACHOIRES POUR DISPOSITIF DE LEVAGE DE TIGES MECANIQUE OU HYDRAULIQUE
Publication
Application
Priority
- DE 4326298 A 19930805
- EP 9402594 W 19940805
Abstract (en)
[origin: WO9504868A1] A jaw clamp (20) for a mechanical or hydraulic rod lifter of ramming or drilling rods has a cylindrical housing (10) with a downwardly tapering inner wall (11). Several clamping jaws are supported on the inner wall (11) and are axially movable. They firmly clamp a set of rods passing axially through the jaw clamp and are joined together. The outside of each individual jaw clamp (20) is crowned in the supporting region on the conical inner wall (11).
IPC 1-7
IPC 8 full level
E21B 19/07 (2006.01); E21B 19/10 (2006.01)
CPC (source: EP US)
E21B 19/07 (2013.01 - EP); E21B 19/10 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
WO 9504868 A1 19950216; DE 4326298 A1 19950309; DE 59402672 D1 19970612; EP 0711377 A1 19960515; EP 0711377 B1 19970507; JP H09501210 A 19970204
DOCDB simple family (application)
EP 9402594 W 19940805; DE 4326298 A 19930805; DE 59402672 T 19940805; EP 94926150 A 19940805; JP 50622195 A 19940805