Title:
EARTH DRILL
Document Type and Number:
Japanese Patent JPS5559293
Kind Code:
A
Abstract:
In a drilling arrangement, non- rotatable telescopic rods (4, 5, 6) carrying a drilling drive and head (7, 8) at their lower end. Endless flexible elements (11, 12) connected between the rods provide the drill feed from a feed drive (3) supported on the mast along with a guide (2). A flushing head (not shown) can be interposed between the drilling drive (7) and the drill head (8) to provide the drill head with flushing fluid from a non- rotatable pipe.
Inventors:
BERUNEN MAAGERU
Application Number:
JP11470179A
Publication Date:
May 02, 1980
Filing Date:
September 06, 1979
Export Citation:
Assignee:
SALZGITTER MASCHINEN AG
International Classes:
E21B17/00; E21B17/07; E21B11/00; E21B17/18; E21B17/20; E21B19/084; E21B21/12; (IPC1-7): E21B7/00