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1. ZA2003/03040 - ROCK DRILLING APPARATUS AND MECHANICAL CONVEYOR FOR DRILL CUTTINGS

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Office South Africa
Application Number 2003/03040
Application Date 17.04.2003
Publication Number 2003/03040
Publication Date 31.12.2003
Publication Kind B
IPC
E21B
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
CPC
E21B 21/01
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
21Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
01Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
E21B 21/015
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
21Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
01Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
015Means engaging the bore entrance, e.g. hoods for collecting dust
E21B 21/012
EFIXED CONSTRUCTIONS
21EARTH DRILLING; MINING
BEARTH DRILLING, e.g. DEEP DRILLING
21Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
01Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
011Dust eliminating or dust removing while drilling
012using exhaust air from the drilling motor for blowing off the dust at the borehole entrance
Applicants SANDVIK TAMROCK OY
Inventors Leo HAKKINEN
Erkki EILO
Agents JOHN & KERNICK
Priority Data 20002335 24.10.2000 FI
Title
(EN) ROCK DRILLING APPARATUS AND MECHANICAL CONVEYOR FOR DRILL CUTTINGS
Abstract
(EN)

provided with a sensor (68, 72, 76) for detecting when the conveyor has possibly januned. The detection data of the sensor is supplied to a control unit (70) of the conveyor, which commands an actuator (31) driving the conveyor to drive the conveyor in a direction that is opposite to the normal direction of conveyance for a predetermined period of time.

Also published as
AU2002210612
CA2426056
CL2001002543
NO20031809
SE03011731
SE524517
WO/2002/035053
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