Matches 1 - 8 out of 8


Match Document Document Title
US20120048619 SYSTEM, METHOD AND APPARATUS FOR DRILLING AGITATOR  
A drilling agitator tool, system and method facilitates axial movement of a drill string in a well. The tool has a valve assembly that provides pulses of fluid pressure in the drill string. A...
US20140034387 ROTATION UNIT, ROCK DRILLING UNIT AND METHOD FOR ROCK DRILLING  
A rotation unit, rock drilling unit and method for rock drilling. The rotation unit includes a main shaft that is rotated around its longitudinal axis by means of a rotating motor. The main shaft...
US20050121234 Drilling machine having rotary tools  
A drilling machine comprising: a frame; at least one pair of rotary drilling tools having substantially the same axis of rotation; and a support assembly secured to the frame and supporting said...
US20130008718 CONTROL SYSTEM AND INTERFACE FOR A TUNNELING APPARATUS  
A tunneling apparatus is disclosed. The tunneling apparatus includes a drill string formed by a plurality of drill string sections. The drill string has a proximal end and a distal end. The...
US20170114594 ROCK DRILLING RIG  
A rock drilling rig includes a drilling unit that is provided with hydraulically operated actuators, such as an impact device, a rotation device and a feed device. The impact device and the...
US20050252690 Tool for gripping a pipe or rod  
A tool for gripping the circumferential outer surface of a pipe or rod and comprising a pair of diametrically opposed arcuate shoes each with a ball cage having a plurality of balls retained by...
US20140305706 DRILLING TOOL FOR LAYING A TUBE IN THE GROUND  
A drilling tool for laying a tube (3) around a buried elongated element (1), comprising a drilling head (2) guided by the buried element (1), moving under the action of a pressurized fluid, from a...
US20140305707 Fuel Tank  
A fuel tank for a fuel-operated down-the-hole drill including a drill bit, is provided. A largest rotation diameter of the fuel tank is provided at or in connection with drilling equipment and is...
Matches 1 - 8 out of 8