| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 076108100 | Drill | 35 |
| 20100282026 | METHOD AND SYSTEM FOR AUTOMATED EARTH BORING DRILL BIT MANUFACTURING - A method and system for manufacturing a earth boring tool, comprising placing a tool in a positioner of an system which then conforms the tool to a model through the performance of a plurality of processing steps thereon. The positioner may move the tool in two axis. The system may include a manipulator which performs each of the processing steps. Alternatively, the system may include a plurality of manipulators, each performing a different one of the processing steps. The processing steps may include various shaping, cleaning, painting, and packaging steps. The processing steps may be performed without removing the tool from the positioner. The tool may be repositioned in the positioner during or between processing steps. For example, performing the processing steps may comprise performing one or more of the process steps, repositioning the tool in the positioner, and re-performing the one or more of the process steps. | 11-11-2010 |
| 20110023663 | MANUFACTURING METHODS FOR HIGH SHEAR ROLLER CONE BITS - A method of manufacturing a roller cone drill bit may include forming a body of a single piece having an upper end and a lower end; machining at the lower end of the body at least two journals extending downward and radially outward from a central axis of the body; machining at least one of a ball passage, a hydraulic fluid passageway, a grease reservoir, and a lubricant passageway; and mounting roller cones on the at least two journals. | 02-03-2011 |
| 20110120269 | MODULAR HYBRID DRILL BIT - An earth-boring bit comprising a bit body is configured at its upper end for connection into a drillstring. A fixed blade depends axially downwardly from the bit body. An axially extending slot is formed in the bit body adjacent the fixed blade. A bit leg is received and retained in the slot by engagement between the slot and correspondingly shaped bit leg, wherein the bit leg cannot be removed from the slot except by axial movement relative to the bit body. A rolling cutter is secured to the bit leg at its lower extent. A fastener secures the bit leg against movement relative to the bit body and extends through oblong apertures in the bit leg and into the bit body, wherein the bit leg can be moved axially relative to the bit body to adjust the projection of the rolling cutter relative to the fixed blade. The slot defines a pair of generally opposed sides connected by a third side, the generally opposed sides being inclined toward one another to define a dovetail that corresponds with the shape of the bit leg. The bit body further comprises a shank that is configured for connection into the drillstring at its upper extent and has a generally cylindrical receptacle formed in its lower extent; and a bit body portion having a generally cylindrical upper extent, the receptacle being and dimensioned to receive the upper extent of the bit body, wherein the shank and bit body portions are secured together by welding. | 05-26-2011 |
| 20110290079 | Production method for an insertion end, such as for a drilling, chiseling or boring tool - A production method for an insertion end, especially for an insertion end of a drilling, chiseling or boring tool, including the following steps: a longitudinal groove is formed in the outer surface of a preferably cylindrical end piece of a blank, whereby the longitudinal groove acquires an open end section on a front face of the end piece. The outer surface of the end piece is surrounded by a die tool that engages into the longitudinal groove outside of its open end section. The open end section is closed in that the surrounded end piece is compressed by means of a stamp acting on the front face. The segmented, multi-component die tool preferably lies flush against the outer surface of the end piece outside of the longitudinal grooves. | 12-01-2011 |
| 20120204682 | Method and Apparatus for a True Geometry, Durable Rotating Drill Bit - A method includes the steps of assembling cone-leg assemblies, rotating the cones on their respective cone-leg assemblies to predetermined orientations such that cutting structures of one of the cone-leg assemblies are clear from the cutting structures of neighboring cone-leg assemblies, and installing the cone-leg assemblies in a predetermined sequence such that the plurality of cone-leg assemblies to intermesh with each other. Another method includes the steps of thermally fitting a plurality of one piece extended mud nozzles into the bit body to form a plurality of substantially straight direct unobstructed mud laminar flow paths, inserting a plurality of guide pins in preformed locator recesses in the body, and orienting a pre-assembled cone-leg assembly to align a groove on an inner surface of the leg with one of the plurality of guide pins, while thermally fitting the cone-leg assembly into a preformed bore in the body. | 08-16-2012 |
| 20140260808 | METHOD OF JOINING SINTERED PARTS OF DIFFERENT SIZES AND SHAPES - A method of joining a plurality of parts to form a unitary body. At least two sintered parts are provided. At least one of the sintered parts has at least one internal cavity. Each of the parts is formed of a hard metal composition of material. The at least two sintered parts are assembled into the shape of a unitary body. Each of the at least two sintered parts has a joining surface and when each joining surface is brought into contact the surfaces form a bonding interface therebetween. The assembled parts are subjected to a vacuum or gas atmosphere, without the application of external pressure, and to a temperature sufficient to fuse the at least two sintered parts together at the bonding interface to form the unitary body. | 09-18-2014 |
| 076108200 | Rock drill | 16 |
| 20080314203 | PROCESS OF DRILL BIT MANUFACTURE - A method for making drill bits includes sequentially moving a plurality of drill bits through a belt furnace, and moving the drill bits to a cooling station using an automated device after the drill bits have moved through the belt furnace. A continuous process for making core drill bits may also include placing a drill bit on a belt of a belt furnace, transporting the drill bit through the furnace using the belt, removing the drill bit from the belt using an automated process, and cooling the drill bit. | 12-25-2008 |
| 20090013831 | Elongated percussive rock drilling element, a method for production thereof and a use thereof - An elongated percussive rock drilling element comprises at least one thread portion and a flush channel. At least the thread portion is made of a corrosion resistant steel having a structure with a martensite content greater than about 50 wt-% and less than about 100 wt-%, in which the steel comprises C+N greater than about 0.1 wt-% and less than or equal to about 0.8 wt-% and Cr greater than or equal to about 11 wt-% or Cr greater than or equal to about 5 wt-%, Mo less than or equal to about 5 wt-%, W less than or equal to about 5 wt-%, Cu less than or equal to about 2 wt-%, Mo+W+Cu greater than about 0.5 wt-% or Cr+3.3 (Mo+W)+16N greater than about 10 wt-%. The surface of said at least one thread portion of said corrosion resistant steel is ball blasted. | 01-15-2009 |
| 20090031863 | BONDING AGENTS FOR IMPROVED SINTERING OF EARTH-BORING TOOLS, METHODS OF FORMING EARTH-BORING TOOLS AND RESULTING STRUCTURES - Methods for forming earth-boring tools include providing a metal or metal alloy bonding agent at an interface between a first element and a second element and sintering the first element, the second element, and the boding agent to form a bond between the first element and the second element at the interface. The methods may be used, for example, to bond together portions of a body of an earth-boring tool (which may facilitate, for example, the formation of cutting element pockets) or to bond cutting elements to a body of an earth-boring tool (e.g., a bit body of a fixed-cutter earth-boring drill bit or a cone of a roller cone earth-boring drill bit). At least partially formed earth-boring tools include a metal or metal alloy bonding agent at an interface between two or more elements, at least one of which may comprise a green or brown structure. | 02-05-2009 |
| 20090038442 | Method and apparatus for retaining polycrystalline diamond cutters in a drill bit body of matrix or steel - As a more friendly, environmentally sounder replacement process for retaining PDC cutters in drill bits, compared to the known high temperature metallic brazing processes, a process is described for using a low temperature resin which cures in the range of 350° F. to 450° F., while having a melting point below 1250° F., to prevent degradation to the PDC cutters usually occurring at 1250° F. in the drill bit repair cycle. | 02-12-2009 |
| 20090044663 | EARTH-BORING TOOLS HAVING POCKETS FOR RECEIVING CUTTING ELEMENTS AND METHODS FOR FORMING EARTH-BORING TOOLS INCLUDING SUCH POCKETS - Methods of forming cutting element pockets in blades of earth-boring tools include forming a first recess and a second recess intersecting at a location defining the a back of the pocket using a cutter oriented in a manner so as to avoid tool path interference with adjacent blades. A filler material is disposed in the second recess to the location of the back of the pocket. Earth-boring tools having such cutting element pockets are also disclosed. | 02-19-2009 |
| 20090120240 | METHOD FOR MANUFACTURING DRILL HEAD - The present invention provides a method for reliable, easy, and low cost manufacturing of a drill head of such a kind that a cutting blade tip is brazed to a cutting blade mounting seat of a head body, with high dimensional accuracy and blade edge accuracy. | 05-14-2009 |
| 20090158897 | Jack Element with a Stop-off - In one aspect of the present invention, a drill bit has a body intermediate a shank and a working face, the working face comprising a plurality of blades formed on the working face and extending outwardly from the bit body. Each blade comprises at least one cutting element. The drill bit also has a jack element coaxial with an axis of rotation and extending out of an opening formed in the working face. A portion of the jack element is coated with a stop-off. | 06-25-2009 |
| 20100071512 | SYSTEM, METHOD AND APPARATUS FOR ENHANCED CUTTING ELEMENT RETENTION AND SUPPORT IN A ROCK BIT - A rock bit is formed with pockets for enhanced cutting element retention and support of the cutting elements during operation of the rock bit. Portions of the pockets are carburized to increase the yield strength of the pockets which also increases the retention of the cutting elements. The pockets are formed at a diameter that is slightly smaller than the outer diameter of the cutting elements. Portions of the pockets are then carburized. The pockets are heated until the diameter of the pockets is equal to the diameter of the cutting elements. After the cones have been cooled and cleaned, a material is placed in each pocket prior to installing the cutting elements. The material homogenizes support for the cutting elements during operation of the rock bit. | 03-25-2010 |
| 20100116094 | Cemented Tungsten Carbide Rock Bit Cone - An earth-boring bit has a steel body and bearing pin for rotatably supporting a cone. The cone has an exterior surface containing rows of cutting elements. The cone and cutting elements are formed of cemented tungsten carbide. The cone may be manufactured by applying pressure to a mixture of hard particles and metal alloy powder to form a billet, then machining the billet to a desired over-sized conical shaped product. Then the conical-shaped product is liquid-phase sintered to a desired density, which causes shrinking to the desired final shape. | 05-13-2010 |
| 20110094341 | METHODS OF FORMING EARTH BORING ROTARY DRILL BITS INCLUDING BIT BODIES COMPRISING REINFORCED TITANIUM OR TITANIUM BASED ALLOY MATRIX MATERIALS - Earth-boring rotary drill bits include bit bodies comprising a composite material including a plurality of hard phase regions or particles dispersed throughout a titanium or titanium-based alloy matrix material. The bits further include a cutting structure disposed on a face of the bit body. In some embodiments, the bit bodies may include a plurality of regions having differing material compositions. For example, the bit bodies may include a first region comprising a plurality of hard phase regions or particles dispersed throughout a titanium or titanium-based alloy matrix material, and a second region comprising a titanium or a titanium-based alloy material. Methods for forming such drill bits include at least partially sintering a plurality of hard particles and a plurality of particles comprising titanium or a titanium-based alloy material to form a bit body comprising a particle-matrix composite material. A shank may be attached directly to the bit body. | 04-28-2011 |
| 20110126674 | METHODS OF FORMING EARTH-BORING TOOLS HAVING FEATURES FOR AFFECTING CUTTINGS FLOW - Methods of forming earth-boring tools include assembling a plurality of head sections about a longitudinal axis to form a bit body, rotatably mounting a cutter to the cutter bearing shaft of each head section, and forming at least one groove on an outer surface of a bit leg of at least one head section, causing the at least one groove to extend along a curved path from a leading side of the bit leg to a trailing side of the bit leg between an upper sidewall and a lower sidewall. | 06-02-2011 |
| 20110174114 | MATRIX BIT BODIES WITH MULTIPLE MATRIX MATERIALS - A method of manufacturing a drill bit having a bit body and a plurality of blades extending radially from the bit body is disclosed, wherein the method includes adhering a first matrix material to at least a portion of a mold cavity corresponding to an outer surface of the bit body, loading a second matrix material into the other portions of the mold cavity, and heating the mold contents to form a matrix body drill bit. | 07-21-2011 |
| 20110283839 | METHOD OF MONITORING WEAR OF ROCK BIT CUTTERS - A method of monitoring the wear of drill bits for drilling wells in earth formations, several embodiments of an improved drill bit for drilling a well in an earth formation, and methods of manufacture. In one embodiment, the bit is assembled by forming the bit, including a bit body and a plurality of cutting components; introducing a wear detector into the bit; and providing a module to monitor the wear detector and generate an indication of bit wear. The wear detector may be a witness material that may change a characteristic of at least a portion of the bit. The module may detect when the witness material is separated from the bit. The wear detector may be introduced during or after formation of the bit. The bit wear may be displayed for an operator. | 11-24-2011 |
| 20120192680 | Fabricated Mill Body with Blade Pockets for Insert Placement and Alignment - A mill body is machined integrally with blades that have pockets to receive PDC inserts. The insert pockets can have an orientation feature to ensure that inserts that require specific rotational orientation are put into the pockets at the right orientation for efficient milling. The orientation of some of the pockets closest to the bottom and center of the bit have their axis reoriented to a near parallel orientation to the bit center axis to allow the bit body and blade fabrication equipment access to drill the insert pocket. | 08-02-2012 |
| 20130160611 | EARTH-BORING TOOLS AND COMPONENTS THEREOF INCLUDING METHODS OF ATTACHING AT LEAST ONE OF A SHANK AND A NOZZLE TO A BODY OF AN EARTH-BORING TOOL AND TOOLS AND COMPONENTS FORMED BY SUCH METHODS - Earth-boring drill bits include a bit body, an element having an attachment feature bonded to the bit body, and a shank assembly. Methods for assembling an earth-boring rotary drill bit include bonding a threaded element to the bit body of a drill bit and engaging the shank assembly to the threaded element. A nozzle assembly for an earth-boring rotary drill bit may include a cylindrical sleeve having a threaded surface and a threaded nozzle disposed at least partially in the cylindrical sleeve and engaged therewith. Methods of forming an earth-boring drill bit include providing a nozzle assembly including a tubular sleeve and nozzle at least partially within a nozzle port of a bit body. | 06-27-2013 |
| 20150322728 | ROTATIONAL DRILL BITS AND DRILLING APPARATUSES INCLUDING THE SAME - A method for manufacturing a roof-bolt drill bit includes providing a bit body rotatable about a rotational axis, the bit body having at least two cutting element support structures, each of the at least two cutting element support structures including a mounting surface for mounting a cutting element to the bit body and a trailing support surface. The method includes forming an internal passage within the bit body, the internal passage extending from a rearward opening defined in the rearward end of the bit body through at least a portion of the bit body, and forming a fluid port within each of the at least two cutting element support structures, each fluid port extending from the internal passage to a port opening defined in the corresponding cutting element support structure, each port opening being positioned adjacent to the mounting surface of the corresponding cutting element support structure. | 11-12-2015 |
| 076108400 | Well drill | 8 |
| 20090158898 | METHODS OF MANUFACTURING AND REPAIRING ROTARY DRILL BITS INCLUDING SUPPORT ELEMENTS AFFIXED TO THE BIT BODY AT LEAST PARTIALLY DEFINING CUTTER POCKET RECESSES - A rotary drag bit for drilling a subterranean formation includes a plurality of support elements affixed to the bit body, each forming at least a portion of a cutting element pocket. Each of a plurality of cutting elements has a substantially cylindrical body and is at least partially disposed within a cutter pocket. At least a portion of the substantially cylindrical body of each cutting element is directly secured to at least a portion of a substantially arcuate surface of the bit body. At least a portion of a substantially planar surface of each cutting element matingly engages at least a portion of a substantially planar surface of a support element. | 06-25-2009 |
| 20100018353 | APPARATUS AND METHODS TO MANUFACTURE PDC BITS - A method to manufacture a drill bit including constructing a bit head portion of the drill bit, constructing a bit shank portion of the drill bit, aligning the bit head portion with the bit shank portion, and electron beam welding a butted joint between the bit head portion and the bit shank portion. | 01-28-2010 |
| 20100132510 | TWO-CONE DRILL BIT - A two-cone drill bit with a hydraulic arrangement that can be used for one or more of the following: cleaning roller cones, impinging on a hole bottom, or inducing a helical flow field. A two-cone drill bit having a bit body formed from two leg sections and two spacing members. Methods of manufacturing a two-cone drill bit. Methods of improving hydraulics of a two-cone drill bit. | 06-03-2010 |
| 20100319492 | METHODS OF FORMING BODIES OF EARTH-BORING TOOLS - Methods for forming bodies of earth-boring drill bits and other tools include milling a plurality of hard particles and a plurality of particles comprising a matrix material to form a mill product comprising powder particles, separating the particles into a plurality of particle size fractions. Some of the particles from the fractions may be combined to form a powder mixture, which may be pressed to form a green body. Additional methods include mixing a plurality of hard particles and a plurality of particles comprising a matrix material to form a powder mixture, and pressing the powder mixture with pressure having an oscillating magnitude to form a green body. In yet additional methods a powder mixture may be pressed within a deformable container to form a green body and drainage of liquid from the container is enabled as the powder mixture is pressed. | 12-23-2010 |
| 20110030509 | METHODS FOR FORMING EARTH BORING TOOLS HAVING POCKETS FOR RECEIVING CUTTING ELEMENTS - Methods of forming cutting element pockets in earth-boring tools may include forming a first recess and a second recess. A filler material is disposed in the second recess to the form at least a portion of a back surface of the pocket. Methods of forming cutting element pockets in earth-boring tools may include orienting a rotating cutter generally parallel to a longitudinal axis of a cutting element pocket to be formed in a body of an earth-boring tool and machining the cutting element pocket in the earth-boring tool. Methods of forming earth-boring tools include forming a body comprising at least one blade and forming at least one cutting element pocket in the at least one blade. | 02-10-2011 |
| 20130036872 | Modular Fixed Cutter Earth-Boring Bits, Modular Fixed Cutter Earth-Boring Bit Bodies, and Related Methods - A modular fixed cutter earth-boring bit body includes a blade support piece and at least one blade piece fastened to the blade support piece. A modular fixed cutter earth-boring bit and methods of making modular fixed cutter earth-boring bit bodies and bits also are disclosed. | 02-14-2013 |
| 20150053050 | CUTTER POCKET DESIGN - A method for manufacturing a drilling tool includes machining a cutter pocket into a tool body. The cutter pocket has at least a front planar surface, a back planar surface, a first side surface between the front and back planar surfaces, and a second side surface opposite the first side surface and between the front and back planar surfaces. Once machined, cutting elements are placed in the cutter pocket and then brazed in the cutter pocket. | 02-26-2015 |
| 20150376954 | DOWNHOLE TOOLS HAVING FEATURES FOR REDUCING BALLING, AND METHODS OF FORMING SUCH TOOLS - Downhole tools are provided with a topographical pattern, and anti-balling material is provided over the topographical pattern. The topographical pattern may be defined by at least one of a plurality of recesses extending into a surface of a body of the tool and a plurality of protrusions protruding from the surface. Downhole tools include an insert disposed within a recess in a body, and the insert comprises an anti-balling material having a composition selected to reduce accumulation of formation cuttings on the tools when the tools are used to form or service a wellbore. Downhole tools include anti-balling material disposed over a porous mass provided over the surfaces of the tools. Methods of forming downhole tools include providing anti-balling material over features on and/or in a surface of a body of a tool. Methods of repairing downhole tools include removing an insert therefrom and disposing a replacement insert therein. | 12-31-2015 |
| 076108600 | Twist drill | 5 |
| 20110154954 | MACHINING TOOL BLANK - A blank for use in forming a machining tool having a body with at least one end face and at least two recesses formed in the end face including a first recess wherein the first recess extends from the end face at an angle of about 15° to about 60° and a second recess continuing from the first recess extending from the end face at an angle of about 40° to about 90°. | 06-30-2011 |
| 20130118313 | SYSTEM AND METHOD FOR SIMULTANEOUSLY FORMING FLUTES IN SOLID CARBIDE TOOLS - A system for simultaneously forming multiple flutes in a carbide rotary cutting tool includes a chuck adapted to grasp a green rod member and selectively rotate the green rod member about, and translate the green rod member along, a first axis. The system further includes a mechanism adapted to simultaneously machine multiple flutes in the green rod member as the green rod member is rotated about, and translated along, the first axis. | 05-16-2013 |
| 20140026716 | METHOD OF MAKING A BIT FOR A ROTARY DRILL - A method of manufacturing a bit for a rotary drill, the bit including a drill tip ( | 01-30-2014 |
| 20150020649 | ROTARY CUTTING TOOL HAVING PCD CUTTING TIP - A method of forming a cutting tool includes: providing a PCD coated nib of material formed in the shape of a rotary cutting tip; brazing the nib onto a generally cylindrical rod member disposed about a central longitudinal axis, the generally cylindrical rod member having a number of coolant passages formed therein at a first helix angle relative to the central longitudinal axis; and grinding a number of differential flutes of varying helix angles with respect to the central longitudinal axis into the brazed cylindrical rod and nib, each differential flute being oriented such that a corresponding coolant passage of the number of coolant passages breaks out within a corresponding flute. | 01-22-2015 |
| 20150107415 | DRILLING TOOL FOR MACHINE TOOLS AND METHOD FOR THE PRODUCTION THEREOF - The invention relates to a drilling tool for machine tools has a drill body, a cutting head arranged on the front face of the drill body and a shaft arranged at the end thereof, wherein the drill body has two chip flutes, which are delimited at their flanks by ribs and a first chip flute of which is spirally curved. A second chip flute is not spiraled or is spirally curved with a pitch differing from the first chip flute, preferably running in the same direction of rotation. | 04-23-2015 |
