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| Number | Title | Issue Date |
| 8418783 | Boom arrangement for a rock drill and rock drill rig A boom arrangement (7) for a rock drill rig (5) including a feed beam unit (8) for displaceable reception of at least one rock drilling machine (10, 10′), a support unit (13) for connection to and support of a rotator unit (12... | 04/16/2013 |
| 8267202 | Feed chain automatic tensioner An automatic tensioning system for a chain drive system of a rock drill assembly is disclosed. A hydraulic cylinder is coupled to one end of the feed channel of a rock drill assembly. When pressurized hydraulic fluid is provided to the hydraulic cylinder, a plunger ... | 09/18/2012 |
| 8047306 | Top drive drilling system and other applications using a low speed direct drive AC motor A low speed alternating current motor having motor shaft speeds of about 300 is provided, and such motor has application in numerous industries and devices, such as, for example, in top drive drilling systems. Because of the low shaft speed, mechanical speed reducti... | 11/01/2011 |
| 7905300 | Drilling device and drilling method utilizing dual drives The invention relates to a drilling device and a related drilling method, in which provision is made for a mast, a drilling carriage that is guided along the mast in a displaceable manner and a drive unit for moving the drilling carriage on the mast. In accordance w... | 03/15/2011 |
| 7699125 | Worm and collar drive drill rig A drilling or service rig includes a worm drive disposed within and rotatably supported within a mast having one open side. The worm drive defines a helical groove, and a collar is disposed on the worm drive and engages the helical groove. Rotation of the worm drive... | 04/20/2010 |
| 7500531 | Low speed AC motor for direct drive applications A low speed alternating current motor having motor shaft speeds of about 300 is provided, and such motor has application in numerous industries and devices, such as, for example, in top drive drilling systems. Because of the low shaft speed, mechanical speed reducti... | 03/10/2009 |
| 7431105 | Geothermal heat loop installation Methods and apparatuses associated with a rotary driven well drilling rig. One method includes providing a rig having: an erectable mast; a head drive unit for rotatably driving drill pipes into a surface; a pumping unit to deliver a fluid through a drill pipe secur... | 10/07/2008 |
| 7416033 | Instrumented drill head, related drilling/bolting machines, and methods In one aspect, the invention comprises an instrumented drill head for intended use with a drilling machine including a drilling element, such as a drill bit. The drill head includes a case with a rotatable chuck for the drilling element. A first sensor associated wi... | 08/26/2008 |
| 7347285 | Drilling machine having a movable rod handling device and a method for moving the rod handling device A drilling machine including a frame, a tower, a rotary head, and a rod handling device. The frame is supported for movement over the ground and the tower is mounted on the frame. The rotary head is movable along the tower and is engageable with the drill string for... | 03/25/2008 |
| 7316280 | Method for producing earth boreholes In a method for producing and widening ground bores or for the destructive replacement of buried lines with the aid of a tool arranged at the end of a rod driven by a boring device, the rod is built up from individual sections which are to be connected to one anothe... | 01/08/2008 |
| 7308953 | Mobile drilling rig An embodied mobile drilling rig is made of three sections, two substructures and a mast section, which are easily transported and installed at a drilling site. Each substructure includes a mast starting section; a floor side box connected to the mast starting sectio... | 12/18/2007 |
| 7306055 | Automatic method for installing mobile drilling rig at a drilling site A method for installing a mobile drilling rig at a drilling site entails transporting the mobile drilling rig to the drilling site, wherein the mobile drilling rig is made three sections: two substructures and a mast section. The substructures are placed parallel to... | 12/11/2007 |
| 7289871 | Drilling apparatus The invention provides a drilling apparatus (1) having a base (2) from which a drilling arm is pivotally mounted. The drilling arm (3) has an inner arm (4) and an outer arm (5). The inner arm (4) has a first end (6) a... | 10/30/2007 |
| 7278498 | Rotatable support for inclinable masts of drilling machines The rotatable support for inclinable masts of drilling machines includes a connecting element connected to the lifting mechanism of a drilling machine, and including two essentially parallel planar elements having an essentially triangular or trapezoidal shape, on t... | 10/09/2007 |
| 7255406 | Method for manufacturing track for auger boring machine An auger boring machine having a drive mechanism for moving the machine along a desired direction of travel includes a drive motor having a shaft and a pinion mounted on the shaft. A method for manufacturing a track for such a boring machine includes providing a tra... | 08/14/2007 |
| 7255016 | Soil sampler apparatus and method An apparatus removes soil samples at intervals over a field of interest. The apparatus comprises a sampling assembly (60) that rotates on a track (32) riding on a plurality of idler wheels (29, 31). A probe (66) extends and retracts under... | 08/14/2007 |
| 7252150 | Downhole tool A downhole tool including a selectively releasable joint, a downhole drilling assembly including the downhole tool, and a corresponding method. In one embodiment of the invention, a downhole drilling assembly includes a downhole tool having a first body and a second... | 08/07/2007 |
| 7210543 | Reversible power takeoff driven post hole digger A reversible post hole digger apparatus powered by a power takeoff shaft includes a transmission providing a reverse gear and a forward gear in a single housing. The apparatus has a power head disposed between a shaft connected to the power takeoff and an output sha... | 05/01/2007 |
| 7198115 | Lead alignment attachment A construction equipment attachment for driving an object, such as a timber piles, steel piles, pipe piles, steel sheet piles, h-beam and the like, is provided. In one embodiment, the attachment includes a hammer slidably coupled to a lead, a lead mounting assembly ... | 04/03/2007 |
| 7188683 | Drilling method A system and method is disclosed for continuously supplying drilling fluid down a bore hole while adding or removing tubulars. ... | 03/13/2007 |
| 7143845 | Drilling apparatus with anti-vibration inertial body A blast-hole drilling rig includes a carriage, a mast disposed on the carriage, and a rotary head mounted on the mast for up-and-down movement. The rotary head includes: a housing forming an internal chamber, a hydraulically driven motor, and a rotation transmission... | 12/05/2006 |
| 7140806 | Rod pulling and pushing machine for pipe bursting A rod pushing and pulling machine includes at least one hydraulic cylinder having a front end thereof engagable with a reaction surface at an entry opening of a existing pipeline or borehole, a spindle assembly, and a dual vise assembly. The spindle assembly include... | 11/28/2006 |
| 7134513 | Drive mechanism for boring machine An auger boring machine includes a track having an initial end and a terminal end, and the track is provided with a rack. The boring machine also includes a sled that is mounted on the track and adapted to be moved between the initial end and the terminal end of the... | 11/14/2006 |
| 7114580 | Method and apparatus for determining a trajectory of a directional drill An apparatus for determining a trajectory of a directional drill includes two length measurement devices deployed along a surface of the drill string and a controller capable of determining the heading of the drill string from two lengths of the drill string measure... | 10/03/2006 |
| 6763898 | Dual hoist system The invention is a multiple lift hoist system for a drilling vessel and use on land made of a mast with a top side and a base connected to a drilling vessel, wherein the mast has a hollow construction for supporting a first and second hoisting device at the top side... | 07/20/2004 |
| 6675915 | Drilling machine having a rotary head guide The drilling machine of the present invention includes a frame, a tower, a rotary head, and a rotary head guide. The tower is mounted on the frame and includes an elongated member. The rotary head is engageable with the drill string and slidably coupled t... | 01/13/2004 |
| 6672410 | Drilling machine having a feed cable tensioner The drilling machine includes a frame that is supported for movement over the ground and a tower that is mounted on the frame. A rotary head is movable along the tower and engageable with a drill string for rotating the drill string. A pull down cable is ... | 01/06/2004 |
| 6615931 | Continuous feed drilling system A continuous feed drilling system and controller includes a head assembly having first and second chucks synchronized to rotate at the same rotational velocity. The chucks are independently moveable within the head assembly and their positions are measure... | 09/09/2003 |
| 6533045 | Portable drilling rig A portable drilling rig 20 for drilling water wells or installing geothermal pipe systems in the ground 22. The portable drilling rig 20 is removably mounted on a truck bed 24. The single I beam mast 30 of the rig 20 pivots to a horizontal position 32 on ... | 03/18/2003 |
| 6481930 | Apparatus and method for inserting and removing a flexible first material into a second material An apparatus for inserting and removing a flexible first material into a second material (20) includes a moveable carriage (22). An adjustable clamp (24) is connected to the moveable carriage (22), adjustable between an open position and a clamped positio... | 11/19/2002 |
| 6464020 | Apparatus and method to drill and lift core-drilled specimens from an aggregate medium An single apparatus to drill and lift core specimens from an aggregate field includes a frame structure that can be deployed to a workface and is adapted to hydraulically deploy a rotating core drilling bit upon that workface to cut a core specimen from t... | 10/15/2002 |
| 6446738 | Blasthole drill including an improved operator's cab A drill comprising a frame supported for movement over the ground in a forward propel direction and a rearward propel direction, a mast mounted on the frame in a generally vertical position, and a drill head moveable up and down the mast. The drill head i... | 09/10/2002 |
| 6276464 | Stake coupler for a horizontal directional drill A coupling for quickly and easily attaching and detaching stakes from the drive head of a horizontal directional drill. The coupling includes an upper coupler member and a lower coupler member. The lower coupler member slides into the upper coupler member... | 08/21/2001 |
| 6267187 | Boring apparatus with coupling for rapid connection of drill string segments In apparatus for producing and expanding earth boreholes and for destroying and replacing underground pipelines or for driving in pipes, a feed drive and a rotary drive having a plug-in coupling comprising a chuck and a locking portion at the end of a str... | 07/31/2001 |
| 6263985 | Drilling machine with changeable drive unit A double-head drilling machine is disclosed, which by changing over or converting small component units can cooperate with drill or drill pipes of different diameters. To this end, drive carriages (16) operating on drills or drill pipes, for example, comp... | 07/24/2001 |
| 6257349 | Top head drive and mast assembly for drill rigs A top head rotary drive and mast assembly for drilling which is adapted to be readily mounted on a derrick of a conventional truck, crawler or other vehicle so as to be movable from a stored position adjacent the derrick to a deployed position spaced from... | 07/10/2001 |
| 6189628 | Earth borer system with drill-rod changer This invention relates to an earth borer system with a frame (48) incorporating a moveable rotary drive (50, 54) for a drill rod assembly consisting of at least two drill rods which can be detachably connected with one another along a bore axis (58); with... | 02/20/2001 |
| 6131674 | Gripping apparatus for resisting sliding of drilling machine A gripping apparatus for resisting sliding of a drilling machine in first and second directions during drilling operations is provided. The gripping apparatus is pivotably mounted on the anchoring assembly of the drilling machine. The drilling machine inc... | 10/17/2000 |
| 6109831 | Underground boring and pipe installation A utility power unit (10) for underground drilling and pipe laying operations comprises a stationary frame portion (12), a movable frame portion (14) capable of performing sliding movement relative to the stationary frame portion (12) and hydraulic cylind... | 08/29/2000 |
| 6047782 | Assembly and method for extracting discrete soil samples An assembly for extracting discrete soil samples from subsurface soil at a lurality of selected depths includes an elongated outer tubular housing, and a soil sample tube for disposal in the outer tubular housing. The soil sample tube is movable axially in... | 04/11/2000 |
