Global Patent Index - EP 0990074 A1

EP 0990074 A1 2000-04-05 - 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

EP 0990074 A1 (DE)

Application

EP 98927998 A

Priority

  • AT 9800149 W
  • AT 106497 A

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 (main, further and additional classification)

E02D 5/76; E21D 21/00

IPC 8 full level (invention and additional information)

E21D 20/00 (2006.01); E02D 5/76 (2006.01); E02D 5/80 (2006.01); E21D 21/00 (2006.01)

CPC (invention and additional information)

E21D 21/0033 (2013.01); E02D 5/76 (2013.01); E21D 21/0053 (2016.01)

Citation (search report)

See references of WO 9858132A1

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI PT

EPO simple patent family

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; MY 120448 A 20051031; PL 337323 A1 20000814; PL 62950 Y1 20070228; SK 170499 A3 20000912; TR 9903099 T2 20000421; US 6145601 A 20001114; ZA 9805282 B 19990111

INPADOC legal status


2007-01-19 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Ref Legal Event Code: WD

- Ref Document Number: 1027139

- Country of Ref Document: HK

2006-05-17 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20051117

2004-09-15 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20040803

2000-04-05 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991224

2000-04-05 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH DE ES FR GB GR IT LI PT

2000-04-05 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: SI PAYMENT 19991221