Matches 1 - 50 out of 193 1 2 3 4 >
Match Document Document Title
7621349 Drill bit with a fixed cutting structure  
The invention concerns a drill bit ( 1 ) with stationary cutting structure, comprising a tool body ( 2 ) and several blades ( 3 ), which consist of a metal matrix impregnated with abrasive...
7588102 High impact resistant tool  
A tool has a sintered body of diamond or diamond-like particles in a metal matrix bonded to a cemented metal carbide substrate at a non-planar interface. A working surface has at least one region...
7543662 Stress-relieved diamond inserts  
A drill bit including at least one stress-relieved cutting element, wherein the at least one cutting element is mounted on the drill bit, wherein the stress-relieved cutting element includes a...
7533740 Thermally stable polycrystalline diamond cutting elements and bits incorporating the same  
Cutting elements are provided having substrates including end surfaces. TSP material layers extend over only a portion of the end surfaces or extend into the substrates below the end surfaces. Bits...
7533739 Cutting element apparatuses and drill bits so equipped  
A cutting element assembly for use on a rotary drill bit for forming a borehole in a subterranean formation. A cutting element includes a substrate having a base member affixed to a back surface of...
7516804 Polycrystalline diamond element comprising ultra-dispersed diamond grain structures and applications utilizing same  
Superabrasive elements, methods of fabricating such elements, and applications utilizing such elements. In one embodiment, a superabrasive element includes a mass of polycrystalline diamond...
7497280 Abrasive-impregnated cutting structure having anisotropic wear resistance and drag bit including same  
An abrasive-impregnated cutting structure for use in drilling a subterranean formation is disclosed. The abrasive-impregnated cutting structure may comprise a plurality of abrasive particles...
7493973 Polycrystalline diamond materials having improved abrasion resistance, thermal stability and impact resistance  
PCD materials comprise a diamond body having bonded diamond crystals and interstitial regions disposed among the crystals. The diamond body is formed from diamond grains and a catalyst material at...
7487849 Thermally stable diamond brazing  
A cutting element and a method for forming a cutting element is described and shown. The cutting element includes a substrate, a TSP diamond layer, a metal interlayer between the substrate and the...
7469757 Drill bit with diamond impregnated cutter element  
The present invention provides a bit with cutting structures or inserts that include diamond particles, in which the diamond-impregnated inserts are surrounded by substantially diamond-free support...
7426969 Bits and cutting structures  
This invention provides an improved cutting element for downhole cutting tools comprising a support element and a shearing element disposed on said support; a drill bit insert comprising a body and...
7395880 Mortar removal drill bit system  
A mortar removal drill bit system includes a toothed drill bit that includes an elongated rod that has a first end and a second end. A plurality of rectangular plates is attached to and extends...
7392865 Randomly-oriented composite constructions  
Composite constructions comprise a plurality of granules that are arranged together in a randomly-oriented manner. The granules each comprise an ordered arrangement of a first material phase and a...
7350601 Cutting elements formed from ultra hard materials having an enhanced construction  
Cutting elements of this invention include an ultra hard body joined with a metallic substrate. The body includes an uppermost layer comprising a plurality of bonded ultra hard crystals and...
7347292 Braze material for an attack tool  
In one aspect of the invention, a tool has a wear-resistant base suitable for attachment to a driving mechanism and also a hard tip attached to an interfacial surface of the base. The tip has a...
7311159 PCD face seal for earth-boring bit  
An earth-boring bit has a mechanical face seal assembly with PCD faces. The bit has a bearing shaft with a cone rotatably mounted on the bearing shaft. The seal locates between the bearing shaft...
7278499 Rotary drag bit including a central region having a plurality of cutting structures  
A rotary drag bit including an inverted cone geometry proximate the longitudinal axis thereof is disclosed. The inverted cone region may include a central region, the central region including a...
7267187 Braze alloy and method of use for drilling applications  
A down hole cutting tool includes a cutting element support structure. The cutting element support structure has at least one cavity formed therein. A cutting element is disposed in the cavity....
7243745 Cutting elements and rotary drill bits including same  
A cutting element for a rotary drill bit that has a superabrasive member joined to a substrate at a three-dimensional interface is disclosed. The interface of the cutting element preferably...
7234541 DLC coating for earth-boring bit seal ring  
An earth-boring bit has a seal assembly with a seal face having a DLC coating. The seal assembly locates between a bearing pin and a cone of the bit. The seal assembly has at least one rigid ring...
7207401 One trip milling system  
The side tracking system includes a window mill having a full diameter cutting surface and a reduced diameter tapered cutting surface and a whipstock having a ramp engaging the reduced diameter...
7188692 Superabrasive cutting elements having enhanced durability, method of producing same, and drill bits so equipped  
A superabrasive cutting element including a diamond or other superabrasive material table having a peripheral cutting edge defined by at least two adjacent chamfers having an arcuate surface...
7048081 Superabrasive cutting element having an asperital cutting face and drill bit so equipped  
A superabrasive cutting element for use with a drill bit for drilling subterranean formations and having a superabrasive table, or cutting face, in which a conglomerate of superabrasive particles...
7017677 Coarse carbide substrate cutting elements and method of forming the same  
Cutting elements having coarse grain substrates and ultra hard material layers are provided. The substrates are formed from coarse grain size particles of tungsten carbide. A method of forming such...
7011169 Expanded coverage carbide compact  
A drill bit with rolling cone cutters for drilling a borehole in an earthen formation. The bit has a bit body, at least one leg depending from the bit body, a rolling cone rotatably mounted on the...
6973978 Drilling tool having an expandable bladder and method for using same  
A drilling tool having an expandable bladder and a method for using the same are provided. The drilling tool includes a tool body having an interior cavity, a plurality of extendable arms coupled...
6935444 Superabrasive cutting elements with cutting edge geometry having enhanced durability, method of producing same, and drill bits so equipped  
A superabrasive cutting element including a diamond or other superabrasive material table having a peripheral cutting edge defined by at least two adjacent chamfers having an arcuate surface...
6933049 Abrasive tool inserts with diminished residual tensile stresses and their production  
An abrasive tool insert includes (a) a substrate having a support face that includes (1) an inner support table, (2) an outer shoulder having a width, S w , and (3) a downwardly sloping interface...
6915866 Polycrystalline diamond with improved abrasion resistance  
A cutting element and bit incorporating the cutting element is provided, as well as a method for forming the same. The cutting element includes an ultra hard material layer including chromium and...
6904983 Low-contact area cutting element  
A cutting element for a drag-type drill bit comprises a cutter body having a generally cylindrical base section adapted for snug-fitting engagement in a socket of a drill bit body. The cutter body...
6892836 Cutting element having a substrate, a transition layer and an ultra hard material layer  
A non-uniform interface is formed between a polycrystalline ultra hard material layer and a cemented tungsten carbide substrate, or a polycrystalline ultra hard material layer and a transition...
6843333 Impregnated rotary drag bit  
A drill bit employing a plurality of discrete, post-like, abrasive, particulate-impregnated cutting structures extending upwardly from abrasive, particulate-impregnated blades defining a plurality...
6823952 Structure for polycrystalline diamond insert drill bit body  
A method for forming a drill bit body is disclosed which comprises infiltrating powdered tungsten carbide with a binder alloy in a mold. The mold has therein at least one displacement adapted to...
6808031 Drill bit having large diameter PDC cutters  
A variety of large diameter PDC cutters for use in drill bits are disclosed. Specifically, various PDC cutters having a diameter between 19.0 mm and 25.0 mm are disclosed. The various PDC cutters...
6742611 Laminated and composite impregnated cutting structures for drill bits  
A laminated cutting element for use on a rotary-type earth-boring drill bit for drilling subterranean formations preferably including at least one first segment formed of a hard, continuous-phase...
6725953 Drill bit having diamond impregnated inserts primary cutting structure  
An earth-boring bit comprises a bit body bit body in which are mounted a plurality of cutting structures inserts, wherein at least a portion of the cutting structures comprise diamond-impregnated...
6696137 Woven and packed composite constructions  
PCD and PCBN composite constructions have an ordered structure of two or more material phases that are combined together in a packed or interwoven configuration. One of the material phases is...
6651757 Toughness optimized insert for rock and hammer bits  
An insert for a drill bit is disclosed which includes an exposed surface having a contact portion adapted to periodically contact earthen formation. The contact portion includes a polycrystalline...
6607835 Composite constructions with ordered microstructure  
Composite constructions of this invention comprise a first structural phase formed from a hard material selected from the group consisting of cermet materials, polycrystalline diamond,...
6604588 Gage trimmers and bit incorporating the same  
A gage trimmer and a bit incorporating such a gage trimmer are provided. The gage trimmer has an ultra hard material layer having a circumferential surface including a cylindrical portion and a...
6571891 Web cutter  
A cutter for a drill bit has a superabrasive member joined to a substrate at a three-dimensional interface. The three-dimensional interface comprises a protrusive pattern of interconnected elements...
6568492 Drag-type casing mill/drill bit  
A drag type casing mill/drill bit for down hole milling of a casing window and lateral drilling of a bore hole in an earth formation comprises a bit body adapted to be rotated in a defined...
6550556 Ultra hard material cutter with shaped cutting surface  
A cutting layer is provided having a radially extending depression formed on the exposed surface of the cutting element's cutting layer. A corresponding depression may be formed on the substrate...
6524363 Diamond coated cutting tools and method of manufacture  
A coated body that has a substrate of tungsten, carbon, and cobalt, and wherein the substrate presents a surface. Eta phase is present at the surface of the substrate. Fibrous tungsten carbide...
6510910 Unplanar non-axisymmetric inserts  
Cutting elements for incorporation in a drill bit are provided having a body having an end face interfacing with an ultra hard material cutting layer. A main depression having a nonplanar surface...
6510906 Impregnated bit with PDC cutters in cone area  
A drill bit employing a plurality of discrete, post-like diamond grit impregnated cutting structures extending upwardly from abrasive particulate-impregnated blades defining a plurality of fluid...
6499547 Multiple grade carbide for diamond capped insert  
An insert for a rolling cone earth-boring bit has a cylindrical base that interferingly presses into a mating hole formed in a cone of the bit. The insert has a convex end that extends from the...
6488106 Superabrasive cutting element  
A cutting element for an earth boring bit comprises a cutting compact of a superabrasive material layer bonded to a supporting substrate. The superabrasive material layer has a pattern of radially...
6474425 Asymmetric diamond impregnated drill bit  
A drill bit including a bit body and a plurality of blades formed in the bit body. The blades are formed, at least in part, from a base matrix material that on one embodiment is impregnated with...
6458471 Reinforced abrasive-impregnated cutting elements, drill bits including same and methods  
A cutting element for use on a rotary-type earth boring drill bit for drilling subterranean formations including a segment and a support member. The support member is preferably fabricated from a...
Matches 1 - 50 out of 193 1 2 3 4 >