Oy Atlas Copco Rotex Ab Patent applications |
Patent application number | Title | Published |
20130284515 | METHOD AND APPARATUS FOR COUPLING AN EARTH PIPE INTO THE GROUND, USING A SOLIDIFYING MASS - A method for coupling an earth pipe into the ground when utilizing an apparatus that has a drilling device including a casing part and a drilling unit inside thereof. The drilling unit includes a first drilling member for drilling a center hole and a second drilling member for reaming the center hole for the casing part. The casing part is arranged to be drawn into the hole by the first and/or second drilling member. After drilling a hole for the earth pipe and lifting up the first drilling member, a solidifying mass is led to the bottom of the hole to couple the earth pipe to the surrounding ground. The solidifying mass is brought in the casing part utilizing a flow-through assembly at a lower end of the casing part into a space between an outer surface of the casing part and the hole. Also an apparatus operating. | 10-31-2013 |
20120227985 | METHOD FOR COUPLING OF A CASING TUBE TO A DRILL BIT - A method for connecting a casing tube to a drill bit. An annular groove is formed around an outer track of the bit. A drill shoe is utilized to connect the casing tube to the bit at a front edge of the bit. The connection ring is attached to the groove and the casing tube. If the connection ring is attached to the casing tube, at a first stage of the installation a chopped ring element is at least partially installed into the groove. At a second stage of the installation, the connection ring is pushed such that the ring element becomes strained simultaneously with moving into the groove, in which case when the connection ring is moved, the ring element moves in the groove and slides into the groove such that movement of the ring element to a deepest point of the groove is prohibited by a stopper. | 09-13-2012 |
20110278069 | METHOD AND APPARATUS FOR DOWN-THE-HOLE DRILLING - A method and apparatus for down-the-hole drilling. The drilling is carried out by a drilling device including a casing and a drilling unit. The drilling head includes a first drill for drilling a center hole, a second drill for reaming the center hole and a flushing flow arrangement including a first flusher for leading a flushing medium onto a drilling surface and a second flusher for returning of the flushing medium and drilling waste inside the casing. The first drill is removably coupled with the second drill to enable removal thereof from the hole. The casing is arranged to be drawn into a hole to be drilled by the drilling unit. The flushing medium is brought onto the drilling surface and returned therefrom by axially directed flow arrangements disposed in a cross-section view on an outer periphery of the first drill and/or in an inner periphery of the second drill. | 11-17-2011 |
20110198129 | METHOD AND DRILLING APPARATUS FOR DOWN-THE-HOLE DRILLING - A method and drilling apparatus for drilling. The drilling is carried out by a drilling apparatus including a drilling device including a casing part and at least during drilling a drilling unit. At the drilling head of the drilling apparatus are at least first drilling elements, a second drilling element, a flushing flow arrangement and a pressure medium operated hammering device. The first drilling elements are coupled with the second drilling element power-transmittedly in order to carry out cooperation thereof at least during drilling with the second drilling elements for a rotational motion, a feeding motion and the hammering motion, and are coupled removably to enable removal thereof from the hole. For producing the hammering motion a hammering device is used that is operated essentially by a water-based pressure medium. At least a part of the water-based pressure medium operating the hammering device is used as the flushing medium. | 08-18-2011 |