EP 0990074 A1 20000405 - PROCESS AND DEVICE FOR BORING HOLES
Title (en)
PROCESS AND DEVICE FOR BORING HOLES
Title (de)
VERFAHREN UND VORRICHTUNG ZUM BOHREN VON LÖCHERN
Title (fr)
PROCEDE ET DISPOSITIF PERMETTANT DE CREUSER DES TROUS DE FORAGE
Publication
Application
Priority
- AT 9800149 W 19980617
- AT 106497 A 19970618
Abstract (en)
[origin: WO9858132A1] A process and device are disclosed for boring holes in soil or rocks, in particular for percussion or rotary percussion boring. A bore hole is formed by an annular drill bit (1) mounted on boring rods (2) and at the same time a jacket tube (3, 4) which surrounds the boring rods (2) with a certain gap is introduced. The annular drill bit (1) is flushed during boring by a flushing medium fed into the annular gap (13) defined between the boring rods (2) and the jacket tube (3, 4). When boring is completed, a setting suspension is fed into the annular gap (13) to form an anchorage with the boring rods (2). An anchorage can thus be obtained in a simple and reliable manner immediately after a bore hole is completed, in particular in loose or slack material, by means of a device having a simple design.
IPC 1-7
IPC 8 full level
E21D 20/00 (2006.01); E02D 5/76 (2006.01); E02D 5/80 (2006.01); E21D 21/00 (2006.01)
CPC (source: EP KR US)
E02D 5/76 (2013.01 - EP US); E21B 10/44 (2013.01 - KR); E21D 21/0033 (2013.01 - EP US); E21D 21/0053 (2016.01 - EP US)
Citation (search report)
See references of WO 9858132A1
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI PT
DOCDB simple family (publication)
WO 9858132 A1 19981223; AT 408248 B 20010925; AT A106497 A 20010215; AU 738934 B2 20010927; AU 8002498 A 19990104; CA 2294883 A1 19981223; EP 0990074 A1 20000405; HR P980327 A2 19990430; HR P980327 B1 20031231; JP 2002505724 A 20020219; KR 100527205 B1 20051109; KR 20010013923 A 20010226; MY 120448 A 20051031; PL 337323 A1 20000814; PL 62950 Y1 20070228; SK 170499 A3 20000912; TR 199903099 T2 20000421; US 6145601 A 20001114; ZA 985282 B 19990111
DOCDB simple family (application)
AT 9800149 W 19980617; AT 106497 A 19970618; AU 8002498 A 19980617; CA 2294883 A 19980617; EP 98927998 A 19980617; HR P980327 A 19980617; JP 50339899 A 19980617; KR 19997011945 A 19991217; MY PI9802717 A 19980617; PL 11583598 U 19980617; PL 33732398 A 19980617; SK 170499 A 19980617; TR 9903099 T 19980617; US 46607299 A 19991217; ZA 985282 A 19980618