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Machine translation
1. (WO1997008428) METHOD AND DEVICE FOR DRILLING
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1997/008428    International Application No.:    PCT/SE1996/001052
Publication Date: 06.03.1997 International Filing Date: 27.08.1996
Chapter 2 Demand Filed:    24.03.1997    
IPC:
E21B 44/00 (2006.01), E21B 44/02 (2006.01)
Applicants: ATLAS COPCO CRAELIUS AB [SE/SE]; S-195 82 Märsta (SE) (For All Designated States Except US).
JANSSON, Kjell [SE/SE]; (SE) (For US Only)
Inventors: JANSSON, Kjell; (SE)
Agent: GRUNDFELT, Gunnar; Atlas Copco Rock Drills AB, Patents, S-105 23 Stockholm (SE)
Priority Data:
9502961-7 28.08.1995 SE
Title (EN) METHOD AND DEVICE FOR DRILLING
(FR) PROCEDE ET DISPOSITIF DE FORAGE
Abstract: front page image
(EN)The invention relates to drilling with impregnated diamond drill bits where one automatically keeps the drill bit (30) cutting. The speed of the drilling device (3) along the feed device (2) is determined and the measured value is used for continuously controlling the feed cylinder (10) and the flushing medium pump (29) such that a substantially constant feed rate is achieved at the same time as the rotational speed of the drill bit (30) is kept within predetermined limits.
(FR)La présente invention concerne le forage au moyen de forets à diamants imprégnés dans lequel l'état coupant du foret (30) est maintenu automatiquement. Le procédé consiste à déterminer la vitesse de progression la foreuse (3) le long du chevalet applicateur (2), et à utiliser la vitesse ainsi mesurée pour réguler en permanence le galet de progression (10) et la pompe de boue de forage (29) de façon à maintenir une vitesse de progression sensiblement constante, la vitesse de rotation du foret (30) étant maintenue, simultanément dans des limites prédéterminées.
Designated States: AL, AM, AT, AU, AZ, BB, BG, BR, BY, CA, CH, CN, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN.
African Regional Intellectual Property Organization (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: Swedish (SV)