Global Patent Index - EP 0981678 A1

EP 0981678 A1 2000-03-01 - ARRANGEMENT IN A DRILLING APPARATUS

Title (en)

ARRANGEMENT IN A DRILLING APPARATUS

Title (de)

BOHRVORRICHTUNG

Title (fr)

STRUCTURE INTERNE D'APPAREIL DE FORAGE

Publication

EP 0981678 A1 (EN)

Application

EP 98920553 A

Priority

  • FI 9800387 W
  • FI 972010 A

Abstract (en)

[origin: WO9851900A1] Arrangement in a drilling apparatus, at the drilling end (I) of which there is a drilling device (1), that includes at least drilling means (2) and hammering means (5) to drill a hole by means of the drilling means (2) made functional by a transmission arrangement situated at the driving end (II) of the drilling apparatus, by using a feeding motion along the longitudinal axis (s) of the drilling device (1) and a rotational motion (w) around the longitudinal axis (s) as well as hydraulic fluid being led to the hammering means (5) to achieve a to-and-fro or a like hammering motion (t). The drilling device (1) has jointing means (3) for attachment of a drill rod (4) removably to the same, whereby in connection with the jointing means (3) there has been arranged coupling means (6), that include locking means (6d1, 6d2), that while detaching/attaching a component by means of pressurized medium, essentially self-powered close/open at least the flow openings transmitting hydraulic fluid. The coupling means (6) are arranged to operate by means of hydraulic fluid in a way , that the flow openings leading hydraulic fluid between the hammering means (5) and the hydraulic system of the drilling apparatus and being placed one after another in the longitudinal direction (s) get open essentially simultaneously, by placing a displacement space (x) for hydraulic fluid enabling functioning of the coupling means (6) to the drilling device (1)

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

E21B 17/18; E21B 21/10

IPC 8 full level (invention and additional information)

E21B 4/14 (2006.01); E21B 17/04 (2006.01); E21B 17/18 (2006.01); E21B 21/10 (2006.01)

CPC (invention and additional information)

E21B 4/14 (2013.01); E21B 17/04 (2013.01); E21B 17/18 (2013.01); E21B 21/10 (2013.01)

Citation (search report)

See references of WO 9851900A1

Designated contracting state (EPC)

AT DE FI FR GB IE SE

EPO simple patent family

WO 9851900 A1 19981119; AU 7337198 A 19981208; EP 0981678 A1 20000301; FI 972010 A0 19970513

INPADOC legal status


2003-10-15 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20030415

2003-01-15 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20021203

2002-03-13 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: ATLAS COPCO SECOROC AB

- Ref Legal Event Code: RAP1

2002-03-13 [RIN1] INVENTOR (CORRECTION)

- Ref Legal Event Code: RIN1

- Inventor name: WISAKANTO, RISTO

2002-03-13 [RIN1] INVENTOR (CORRECTION)

- Ref Legal Event Code: RIN1

- Inventor name: SALMI, PEKKA

2002-03-13 [RIN1] INVENTOR (CORRECTION)

- Ref Legal Event Code: RIN1

- Inventor name: SJOEHOLM, HARRI

2000-03-01 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991025

2000-03-01 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT DE FI FR GB IE SE