EP 0789129 B1 20021113 - Self-propelled boring ram
Title (en)
Self-propelled boring ram
Title (de)
Selbstgetriebenes Rammbohrgerät
Title (fr)
Mouton de forage autopropulsé
Publication
Application
Priority
DE 19530972 A 19950823
Abstract (en)
[origin: US5960892A] The invention relates to an automatically driven pile-driver drilling device for drilling into the earth with a percussion piston moving axially inside a casing, driven by a pressure medium and changeable from a forward stroke to a backstroke, with a working space having radial control openings, a guide pipe with radial control openings extending into the working space and forming a rigid part of the housing, and a control box guided into an annular chamber of the guide tube and axially adjustable in a spring-pneumatic manner.
IPC 1-7
IPC 8 full level
E21B 4/14 (2006.01)
CPC (source: EP US)
E21B 4/145 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
US 5960892 A 19991005; AT E227803 T1 20021115; DE 19530972 A1 19970227; DE 19530972 C2 19991202; DE 59609869 D1 20021219; EP 0789129 A2 19970813; EP 0789129 A3 19990714; EP 0789129 B1 20021113; JP H09165986 A 19970624
DOCDB simple family (application)
US 69741096 A 19960823; AT 96113139 T 19960816; DE 19530972 A 19950823; DE 59609869 T 19960816; EP 96113139 A 19960816; JP 24103496 A 19960823