Global Patent Index - EP 1240403 A1

EP 1240403 A1 2002-09-18 - DEVICE FOR HYDRAULIC POWER SUPPLY OF A ROTARY APPARATUS FOR PERCUSSIVE DRILLING

Title (en)

DEVICE FOR HYDRAULIC POWER SUPPLY OF A ROTARY APPARATUS FOR PERCUSSIVE DRILLING

Title (de)

VORRICHTUNG ZUR VERSORGUNG EINES DREHSCHLAGBOHRWERKZEUGES MIT HYDRAULISCHEM DRUCKMITTEL

Title (fr)

DISPOSITIF D'ALIMENTATION HYDRAULIQUE D'UN APPAREIL DE FORAGE ROTO-PERCUTANT

Publication

EP 1240403 A1 (FR)

Application

EP 00976114 A

Priority

  • FR 0003096 W
  • FR 9916411 A

Abstract (en)

[origin: WO0148350A1] The invention concerns a device for supplying hydraulic power to a rotary apparatus for percussive drilling (2) whereof the tool (3) is driven in one direction or another and subjected to the action of an impact device (6) acting independently of the rotation, of a hydraulic device (9) with forward movement enabling the tool to generate a pressure force on the ground, and optionally of a suction device (14) for the drilling dusts, driven by a hydraulic motor, the various hydraulic actuating elements being driven from a hydraulic liquid source under pressure through a hydraulic flow divider (16), a set of distributors (17, 18, 19, 20) and an assembly of branch pipes outside the apparatus, such as hose pipes. Said device comprises a branch pipe external to the apparatus (24) for communicating the return branch pipe (22) of the hydraulic device (4) driving the tool in rotation and the supply line (23) of the impact device (6), to add to the supply rate of the impact device the return flow rate of the rotation driving device.

IPC 1-7 (main, further and additional classification)

E21B 6/08; B25D 9/14

IPC 8 full level (invention and additional information)

E21B 6/00 (2006.01); B25D 9/12 (2006.01); B25D 16/00 (2006.01); B28D 1/14 (2006.01); E21B 6/08 (2006.01); F15B 11/02 (2006.01); F15B 11/16 (2006.01)

CPC (invention and additional information)

E21B 6/08 (2013.01); B25D 9/12 (2013.01)

Citation (search report)

See references of WO 0148350A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

WO 0148350 A1 20010705; AU 1400201 A 20010709; AU 781874 B2 20050616; BR 0016649 A 20021029; CA 2394643 A1 20010705; CN 1425101 A 20030618; EP 1240403 A1 20020918; FR 2802970 A1 20010629; FR 2802970 B1 20020308; IL 150339 D0 20021201; JP 2003533646 A 20031111; NO 20023016 A 20020802; NO 20023016 D0 20020621; US 6883620 B1 20050426; ZA 200204984 B 20040204

INPADOC legal status


2005-04-06 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20041005

2004-05-12 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20040325

2002-09-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020618

2002-09-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-09-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI