| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 175414000 | Impact or percussion type | 34 |
| 20090152014 | FEMALE PART AND A METHOD FOR MANUFACTURING FEMALE PARTS - The present invention A relates to a female part intended for top hammer-drilling equipment and a method for manufacturing female parts. The female part has a thread in the form of a ridge ( | 06-18-2009 |
| 20100175928 | HAMMER BIT - A hammer bit includes a bit body coupled to a hammer drill, a housing bit disposed to the bit body, at least one wing bit coupled to the housing bit to move up and down slantly, and having a rotating radius that is more increased than an outer surface of the bit body when moving up and is more decreased than the outer surface of the bit body when moving down, and at least one spacer installed to move up and down together with the wing bit and filling up an upper space of the wing bit when the wing bit moves down. | 07-15-2010 |
| 20100243333 | Drill Bit Assembly for Fluid-Operated Percussion Drill Tools - The present invention relates to a drill bit assembly for fluid-operated percussion drill tools. The assembly comprises a percussion bit ( | 09-30-2010 |
| 20110042146 | Drill Bit Head for Percussion Drilling Apparatus - This invention relates to a percussion drill bit head for a percussion drilling apparatus, the drill bit head comprising a working surface and a plurality of super-hard buttons protruding from the working surface, the working surface having a hard area that is free of buttons and has Rockwell C hardness of at least 60 HRc. The invention further relates to a method of manufacturing a percussion drill bit head comprising a working surface and a plurality of buttons and a percussion drill bit assembly comprising a drill bit head according to the invention. | 02-24-2011 |
| 20110067928 | BOTTOM-HOLE ASSEMBLY, AND A METHOD AND SYSTEM FOR TRANSMITTING DATA FROM A BOTTOM-HOLE ASSEMBLY - A bottom-hole assembly ( | 03-24-2011 |
| 20110253458 | Percussion hammer bit retention system - A percussion hammer bit retention system including a retainer having at least three (3) tabs, a hammer bit having first and second elevated surfaces that each define pathways and slot openings for rotational receipt of the tabs, and a custom chuck further including slot openings for receipt of the tabs. The application of tabs in combination with the elevated surfaces and indexed slot openings distinguish the present invention over the prior art. In application, in order to fully separate the retainer from the assembly, the tabs are indexed in a manner that only allows them to pass through the aligned slot openings on the first elevated surface in one (1) position every 360 degrees, and then through the aligned slot openings on the second elevated surface in one (1) position every 360 degrees, and then through the indexed slots on the custom chuck in one (1) position every 360 degrees. | 10-20-2011 |
| 20120012399 | DRILL BIT FOR A DOWN-THE-HOLE DRILL - The invention concerns a drill bit, intended to be used with a down-the-hole drill and comprising a drill head ( | 01-19-2012 |
| 20120145464 | BIT ASSEMBLY FOR A DOWN-THE-HOLE HAMMER DRILL - The invention provides for a down-the-hole drill bit assembly comprising a drill bit having a screw-thread at its anvil end, external splines on the drill shank and co-operating splines within a drill casing as well as a co-operating screw thread carried by a component within the casing. The assembly is arranged to have engagement of the splines with the screw threads disengaged for driving the drill and to have the screw threads engaged and splines disengaged to permit removal of the bit from the assembly. | 06-14-2012 |
| 20130327576 | PERCUSSIVE DRILL BIT PROVIDED WITH AN IMPROVED CHUCK ASSEMBLY - The invention provides a drill bit for a down-the-hole drill hammer. The bit has a head at its forward end with a shank extending from the head. The shank is screw threaded along its length. A reciprocating chuck is provided as a sleeve with internal screw threads corresponding to those of the shank. The shank is releasably secured in the chuck with the rear end of the shank providing a striking face. An arrangement of external splines on the chuck, and a retaining shoulder at its rear end, provide for the required guided movement of the chuck within a drill hammer wear sleeve. The bit is simple to machine with screw threads replacing the usual splines and other structural features ordinarily required on this component. These features are instead provided on the chuck and in the wear sleeve. | 12-12-2013 |
| 20140345953 | A DRILL BIT FOR A PERCUSSIVE HAMMER AND SHANK THEREFORE - A bit for a percussive hammer includes an elongated shank, a head at a first end of the shank, and an array of lengthwise extending spline portions defining outwardly extending retention lugs at or toward a further end of the shank. At least a side face of at least one lug is blended into the shank of the bit. | 11-27-2014 |
| 20140367175 | DRILL BIT ASSEMBLY FOR A DIRECTIONAL PERCUSSION BORING SYSTEM - The present disclosure describes various embodiments, as well as features and aspects thereof, of an improved drill bit assembly for a percussion boring system. More specifically, one non-limiting embodiment of an improved drill bit assembly for a percussion boring system comprises a bit and a chuck. The bit head comprises a slant face. The chuck comprises at least thirteen splines. This improved drill bit assembly is such that when the chuck is fully threaded onto the percussion boring system, and when the bit is detachably received by the chuck, the slant face of the bit is aligned to substantially within an average range of 0.00-27.70 arcseconds of an alignment reference point on the surface of the percussion boring system. | 12-18-2014 |
| 175415000 | Combined with rotary | 6 |
| 20090071725 | Percussion Hammer for Enlarging Drilled Holes - The present invention relates to a percussion hammer for enlarging drilled holes. The hammer comprises an external outer wear sleeve ( | 03-19-2009 |
| 20100163314 | ROCK DRILL - The invention relates to a rock drill ( | 07-01-2010 |
| 20110168453 | ROCK DRILL BIT - A rock drill bit comprising a shank fitted with a clamping end and a drilling tip at the end away from the clamping end, the drilling tip comprising at least three, preferably exactly three blades which are alar in topview, said blades each comprising at their top side a lip constituted by a leading chipping face and a trailing flank, the lips substantially converging onto each other within a central zone centered on the drill bit axis, characterized in that, in the central zone, a single lip—long lip—runs through the bit axis and comprises a commensurate overshoot segment extending beyond the bit axis. | 07-14-2011 |
| 20130180784 | ROCK DRILL BIT AND A DRILLING ASSEMBLY FOR PERCUSSIVE ROCK DRILLING - A rock drill bit for percussive drilling includes a bit head attached at an end of a drill element of a drilling assembly. The bit head has a diameter larger than that of the drill element. The bit head has at a front end as seen in the intended drilling direction a plurality of buttons distributed thereon to engage material to be crushed. At least one of the buttons is allowed to rotate about its own symmetry axis. | 07-18-2013 |
| 20130180785 | ROCK DRILL BIT FOR PERCUSSIVE DRILLING AND A ROCK DRILL BIT BUTTON - A button and a rock drill bit for percussive drilling including a bit head attached at an end of a drill element of a drilling assembly. The bit head has at a front end, as seen in the intended drilling direction, a plurality of buttons distributed over the bit head to engage material to be crushed. At least one of the buttons has a shank portion made of a substrate material of particles of a first material embedded in a binder phase. The first material is harder than the binder phase. The shank portion at least partially forms a bearing portion, the material of which is harder than the binder phase. At least one of the buttons is allowed to rotate about its own respective symmetry axis. | 07-18-2013 |
| 20160090791 | PERCUSSIVE ROCK DRILL BIT - A percussive rock drill bit includes a head provided at one end of a rearwardly projecting skirt. The head has an outer collar that defines, in part, a rearwardly projecting recess formed in the forwardmost region of the head. Peripheral gauge buttons are provided at the collar to surround side and front facing buttons formed at the head recess. The drill bit is effective to provide stabilised cutting to minimise lateral deflection. | 03-31-2016 |
| 175417000 | With internal-fluid passage | 4 |
| 20100236835 | Percussion Drilling Assembly and Locking System Therefor - A percussion drilling assembly includes an outer tubular, an inner tubular coupled within the outer tubular, a drill bit slideably disposed within the inner tubular, and a locking system that is actuatable by translation of the drill bit relative to the locking system, whereby the locking system is configured to prevent rotation of the inner tubular relative to the outer tubular in at least a first direction. In some embodiments, the locking system includes a plurality of locking members, each rotatable between an engaged position, wherein the inner tubular is prevented from rotating relative to the outer tubular in the first direction, and a disengaged position, wherein the inner tubular is rotatable relative to the outer tubular in a second direction opposite the first direction. In other embodiments, the locking system includes a locking member which is extendable to prevent rotation of the inner tubular relative to the outer tubular in at least the first direction. | 09-23-2010 |
| 175418000 | Plural openings | 3 |
| 20090044986 | DRILL, A DRILL ASSEMBLY, AND A TOOL HEAD FOR A CUTTING TOOL - A drill, a drill assembly, and a tool head for a cutting tool. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner. | 02-19-2009 |
| 20100108398 | Percussion Rock Drilling Bit with More Efficient Flushing - A design of crown of drill bit for percussive rock drilling with big “V” shape front flushing grooves, small central “dead” area will reduce the repeatedly crushing of broken rock cuttings. It will not only improve the rate of penetration, but also decrease the hole deviation, as well as the erosion to the outer surface of drive sub and case tube of DTH hammer. | 05-06-2010 |
| 20140291035 | DRILL BIT HAVING A SUNKEN BUTTON AND ROCK DRILLING TOOL FOR USE WITH SUCH A DRILL BIT - A drill bit for percussive rock drilling tools includes a drill bit head having a front surface including a face surface defining a forward-most end of the drill bit head and at least one hole in the drill bit head for receiving a button. The drill bit includes at least one recess located in the face surface. The recess is larger than the hole. The hole is disposed in the recess so that an open end of the hole is disposed below the face surface. The drill bit head further includes a gauge surrounding the face surface, the recess being partially disposed in the gauge. | 10-02-2014 |
| 175420100 | Insert | 13 |
| 20090188725 | HARD FORMATION INSERT AND PROCESS FOR MAKING THE SAME - A drilling insert includes a cylindrical body and a top portion of the drilling insert. The top portion is on top of the cylindrical body providing a contact area, wherein the contact area provides a flat area for distributing contact stress when the drilling insert impacts the formation. | 07-30-2009 |
| 20100320003 | BIT FOR USE IN AT LEAST ONE OF MINING, TRENCHING AND MILLING APPLICATIONS - A bit includes a body portion having a first shape, a first length, a first end and a second end. A collar portion having a second shape, a thickness, a first surface disposed adjacent a second end of the body portion and a second surface forming a ledge for seating against a surface of a rotary cutting head of a mining machine. A shank portion, has a diameter and a second length. A first end of the shank is secured to the second surface of the collar portion. A groove formed around the shaft portion closely adjacent the second end thereof. A bit tip disposed adjacent the first end of the body portion to contact a hard surface. The bit tip tapers to a pointed end. A connecting means is disposed in the groove for connecting the bit to the working machine. A plurality of fins is disposed along an outer surface of the body portion. | 12-23-2010 |
| 20110000717 | DRILL BIT FOR A ROCK DRILLING TOOL WITH INCREASED TOUGHNESS AND METHOD FOR INCREASING THE TOUGHNESS OF SUCH DRILL BITS - Drill bit ( | 01-06-2011 |
| 20130048387 | HARD METAL INSERT FOR A DRILL BIT FOR PERCUSSION DRILLING AND METHOD FOR GRINDING A HARD METAL INSERT - A hard metal insert for a drill bit for percussion drilling. A wear part includes a cap including a wear surface. A mount includes a cylindrical part having a cross-sectional area and a diameter. The cap includes a front part with an extension along an axis of symmetry of the insert from a first point on the wear surface to a second point in the cap. The front part includes a volume between a first plane intersecting the axis at the first point and a second plane intersecting the axis at the second point. The volume is ≧0.6 times a cross-sectional area of the front part in the second plane times a distance along the axis between the first and second points. A diameter of the front part in the second plane is ≧0.5 times the mount diameter and ≦0.6 times the mount diameter. | 02-28-2013 |
| 20130175096 | PERCUSSION DRILLING ASSEMBLY AND HAMMER BIT WITH GAGE AND OUTER ROW REINFORCEMENT - A hammer bit for drilling a borehole in earthen formations. In an embodiment, the bit comprises a bit body having a bit axis and a bit face. The bit face includes an inner region extending from the bit axis to about 50% of the bit radius and an outer region extending from the inner region to the outermost radius. In addition, the bit comprises a plurality of gage cutter elements mounted to the bit face in a circumferential gage row in the outer region. Further, the bit comprises a plurality of adjacent to gage cutter elements mounted to the bit face in a circumferential adjacent to gage row in the outer region. The cutting profile of at least one cutter element in each row in the outer region radially overlaps with the cutting profile of at least one other cutter element in a different row in rotated profile view. | 07-11-2013 |
| 20130333952 | DRILLING DEVICE AND PROCESS - A plurality of cutting faces is attached sequentially at a distal end of a drill string. The forward most cutting face that is distal to the top of the hole is exposed and used for drilling until worn to a point of inefficiency. The forward most or distal cutting face is then detached, exposing the next cutting face in the sequence. Detachment of the forward most cutting face is performed by remote actuation at the top of the drill string and/or outside the hole. A new cutting face is provided without the necessity of removing the drill string. The detachment process is repeated as long as drilling is continued and cutting faces remain. | 12-19-2013 |
| 20140131116 | NON-ROTATING DRILL BIT FOR A DOWN-THE-HOLE DRILL HAMMER - A non-rotational drill bit for a down-the-hole drill hammer is provided that includes a head and a shank extending from the head. The head includes a plurality of axisymmetric cutting members about its working face. The drill bit also includes a porting system that includes a central through hole, an air inlet port, an exhaust outlet port and a central exhaust port for exhausting air from an interior of the drill hammer and for clearing drilling debris from the face of the drill bit. | 05-15-2014 |
| 20150041223 | DRILL BIT FOR PERCUSSIVE DRILLING - A drill bit for use in percussive drilling includes a body having a front face, at least one face button on the front face, and a plurality of gauge buttons. Each of the buttons has a working face. At least a portion of at least one gauge button working face has a curvature which deviates further from being flat by comparison to a curvature of any curved portion of at least one face button working face, so that the portion of at least one gauge button working face projects further than the portion of at least one face button working face. | 02-12-2015 |
| 175420200 | Includes diamond | 5 |
| 20090057031 | CHAMFERED EDGE GAGE CUTTERS, DRILL BITS SO EQUIPPED, AND METHODS OF CUTTER MANUFACTURE - A cutting element for an earth boring bit, wherein the PDC layer of the cutting element has a flat on a periphery thereof terminating longitudinally at en edge spaced from of the cutting face of the PDC layer. A chamfer adjacent the cutting face desirably has a length that exceeds its depth. Embodiments include a chamfer along the entire circumference of the cutting element, multiple step-wise, radially adjacent chamfers, and multiple circumferentially spaced portions of the uppermost radius of the PDC layer of the cutting element that each includes a chamfer with an associated flat. An embodiment including a flat terminating at a radial edge with the cutting face of a PDC layer is also disclosed, as are drill bits incorporating embodiments of the cutting elements of the invention and a method of forming the cutting elements. | 03-05-2009 |
| 20090152015 | SUPERABRASIVE MATERIALS AND COMPACTS, METHODS OF FABRICATING SAME, AND APPLICATIONS USING SAME - Embodiments of the present invention relate to superabrasive materials, superabrasive compacts employing such superabrasive materials, and methods of fabricating such superabrasive materials and compacts. One or more embodiments of a superabrasive material include a plurality of first superabrasive regions characteristic of being formed at least partially from a plurality of agglomerates, with each first superabrasive region including a plurality of first superabrasive grains that exhibit a first average grain size, and a matrix through which the plurality of first superabrasive regions is dispersed. The matrix includes a plurality second intercrystalline-bonded superabrasive grains that exhibit a second average grain size. The superabrasive material exhibits one or more of the following characteristics: (1) the first average grain size being less than that of the second average grain size; (2) the plurality of first superabrasive regions exhibiting a selectivity to be preferentially removed from the matrix; or (3) a thermal stability of the plurality of first superabrasive regions being greater than that of the matrix. | 06-18-2009 |
| 20090255735 | Percussion Drilling Assembly and Hammer Bit with Gage and Outer Row Reinforcement - A hammer bit for drilling a borehole in earthen formations. In an embodiment, the bit comprises a bit body having a bit axis and a bit face. The bit face includes an inner region extending from the bit axis to about 50% of the bit radius and an outer region extending from the inner region to the outermost radius. In addition, the bit comprises a plurality of gage cutter elements mounted to the bit face in a circumferential gage row in the outer region. Further, the bit comprises a plurality of adjacent to gage cutter elements mounted to the bit face in a circumferential adjacent to gage row in the outer region. The cutting profile of at least one cutter element in each row in the outer region radially overlaps with the cutting profile of at least one other cutter element in a different row in rotated profile view. | 10-15-2009 |
| 20100059287 | CUTTER GEOMETRY FOR HIGH ROP APPLICATIONS - A polycrystalline diamond compact (“PDCD”) cutter includes a cylindrical body formed from a substrate material, an ultrahard layer disposed on the cylindrical body, and a cutting face perpendicular to an axis of the cylindrical body, wherein the cutting face includes two or more lobes and wherein the radius of at least one lobe is between 50 and 90 percent of the radius of the cylindrical body. A PDC cutter includes a substrate, and a cutting face perpendicular to an axis of the substrate, wherein the cross-section of the cutting face comprises multiple lobes, and the cross-section of the substrate is substantially circular. | 03-11-2010 |
| 20140284115 | POLYCRYSTALLINE DIAMOND CONSTRUCTION AND METHOD OF MAKING SAME - A polycrystalline diamond construction comprises diamond grains exhibiting inter-granular bonding and defining a plurality of interstitial regions, and a non-diamond phase at least partially filling a plurality of the interstitial regions to form non-diamond pools. The percentage of non-diamond phase in the total area of a cross-section of the body of polycrystalline diamond material is between around 0 to 5%, and the average nearest neighbour distance between grains of the non-diamond phase is less than around 1.3 microns in an analysed image of a cross-section through the body of polycrystalline material when analysed using an image analysis technique at a magnification of around 1000 and an image area of 1280 by 960 pixels; or is between around 5 to 10%, and the average nearest neighbour distance between grains of the non-diamond phase is less than around 1.04 microns, or is between around 10 to 15%, and the average nearest neighbour distance between grains of the non-diamond phase is less than around 1.04 microns, or is between around 15 to 30%, and the average nearest neighbour distance between grains of the non-diamond phase is less than around 0.8 microns. | 09-25-2014 |
