METHOD FOR CORRECTING THE DEVIATION OF A HOLE FROM REQUIRED DIRECTION DURING ADVANCEMENT OF A HOLE-MAKING DEVICE AND DEVICE FOR MAKING HOLES IN THE GROUND
A method for directional control of a device comprising a casing (1) with a nose-piece (3) rigidly connected with an anvil (4) and a striker (2), consisting in shifting the direction of the striking force applied to the anvil (4) in relation to the mass centre line of the device. The nose-piece (3)...
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Format: | Patent |
Sprache: | eng ; rus |
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