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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...
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7261753 |
Bonding structure and bonding method for cemented carbide element and diamond element, cutting tip and cutting element for drilling tool, and drilling tool
A cutting tip for a drilling tool includes a cemented carbide cutting base 11 , a diamond element 12 supported by the cutting base 11 , and a bonding layer formed between the cutting base 11 ...
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7243744 |
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...
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7235211 |
Rotary cone bit with functionally-engineered composite inserts
A rotary cone bit, having a functionally-engineered surface of this invention, comprises a bit body having at least one leg extending therefrom, and a cone that is rotatably disposed on the leg....
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6772849 |
Protective overlay coating for PDC drill bits
In one embodiment, a method of increasing a durability of a drill bit having a bit body with at least one blade disposed thereon, at least one cutter pocket disposed on the blade, and at least one...
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EP1212511B1 |
METHOD OF MOUNTING A TSP
Abstract not available for EP1212511 Abstract of corresponding document: WO0216725 A method of applying a wear-resistant material to a surface of a downhole component for use in subsurface...
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6562288 |
Method and apparatus for manufacturing cutting blades, and a cutting blade manufactured by the same
Disclosed are a method for manufacturing cutting blades with a shortened manufacturing process and an apparatus for manufacturing cutting blades with a single manufacturing facility, as well as a...
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6547017 |
Rotary drill bit compensating for changes in hardness of geological formations
A long lasting rotary drill bit for drilling a hole into variable hardness geological formations that has a self-actuating mechanism responsive to the hardness of the geological formation to...
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6454027 |
Polycrystalline diamond carbide composites
Polycrystalline diamond (PCD) carbide composites of this invention have a microstructure comprising a plurality of granules formed from PCD, polycrystalline cubic boron nitride, or mixture thereof,...
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6371225 |
Drill bit and surface treatment for tungsten carbide insert
A drill bit insert has a cylindrical barrel, a bevel on one end, an interface therebetween, and a cutting tip opposite the bevel. The bevel and interface contact the entrance to a hole in the drill...
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6253862 |
Earth-boring bit with cutter spear point hardfacing
An earth-boring bit has rolling cutters, each attached to a bit leg depending from a bit body. Each of the cutters has hardfaced, milled teeth. A spear point is located on one of the cutters. The...
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6206116 |
Rotary cone drill bit with machined cutting structure
A rotary cone drill bit is provided with at least one cutter cone assembly having a machined cutting structure which will maintain an effective cutting profile despite abrasion, erosion and/or wear...
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6170917 |
Pick-style tool with a cermet insert having a Co-Ni-Fe-binder
A pick-style tool that includes an elongate tool body with an axially forward end and an axially rearward end, and a hard insert affixed to the tool body at the axially forward end is disclosed....
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6170583 |
Inserts and compacts having coated or encrusted cubic boron nitride particles
An insert is provided for a rock bit for drilling bore holes in the ground and other downhole tools. The cutting portion of the inserts consist of encrusted cubic boron nitride pellets, tungsten...
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6138779 |
Hardfacing having coated ceramic particles or coated particles of other hard materials placed on a rotary cone cutter
Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated cubic boron nitride particles or coated particles of other ceramic, superabrasive or superhard materials...
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6102140 |
Inserts and compacts having coated or encrusted diamond particles
The improved insert for a ground engaging tool, with a plurality of sockets for receiving a respective insert comprises a body having first and second portions and first and second zones. The first...
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6051079 |
Diamond coated cutting tool insert
A wear resistant, diamond enhanced cutting tool for excavating is disclosed. The cutting tool includes a cutting insert having a diamond coated cutting tip brazed to the cutting insert. The cutting...
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6045750 |
Rock bit hardmetal overlay and proces of manufacture
Methods of forming a new wear and abrasion overlay formed with the steel surfaces of components for earth boring bits, and the components formed by the methods are disclosed. The overlay comprises...
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6022175 |
Elongate rotary tool comprising a cermet having a Co-Ni-Fe binder
An elongate rotary tool including at least one cutting edge that is useful in the machining of workpiece materials is disclosed. The elongate rotary tool comprises a cermet comprising at least one...
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6010283 |
Cutting insert of a cermet having a Co-Ni-Fe-binder
A cutting insert including a flank face, a rake face, and a cutting edge at the intersection of the flank and rake faces that is useful in the chip forming machining of workpiece materials is...
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5992546 |
Rotary earth strata penetrating tool with a cermet insert having a co-ni-fe-binder
A rotary tool that includes an elongate tool body and a hard insert affixed to the tool body is disclosed. The hard insert includes a WC-cermet including tungsten carbide and about 5 wt. % to 19...
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5967248 |
Rock bit hardmetal overlay and process of manufacture
Methods of forming a new wear and abrasion overlay formed with the steel surfaces of components for earth boring bits, and the components formed by the methods are disclosed. The overlay comprises...
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5931269 |
Aircraft wheel part with corrosion and wear resistance
A drive key (10) for an aircraft wheel comprises a hardened and tempered steel member (10) having improved wear and corrosion resistance. The steel member (10) is coated selectively with a tungsten...
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5908710 |
Process for manufacturing a clad sheet which includes an abrasion-resistant layer made of tool steel, and clad sheet obtained
A block is produced by juxtaposition and joining of at least one plate made of tool steel and of at least one plate made from mild steel. The block is hot rolled and then it is cooled to a...
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EP0909869A2 |
Hardmetal overlay for earth boring bit
Methods of forming a new wear and abrasion overlay (42) formed with the steel surfaces of components (41) for earth boring bits, and the components formed by the methods are disclosed. The overlay...
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5837071 |
Diamond coated cutting tool insert and method of making same
A wear resistant, diamond enhanced cutting tool for excavating is disclosed. The cutting tool includes a cutting insert having a diamond coated cutting tip brazed to the cutting insert. The cutting...
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5836409 |
Monolithic self sharpening rotary drill bit having tungsten carbide rods cast in steel alloys
A monolithic long lasting rotary drill bit for drilling a hole into a geological formation having at least one hardened rod which has a length of at least three times its diameter composed of hard...
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5755299 |
Hardfacing with coated diamond particles
Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated diamond particles dispersed within and bonded to a metallic matrix deposit. The coating on the diamond...
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5755298 |
Hardfacing with coated diamond particles
Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated diamond particles dispersed within and bonded to a metallic matrix deposit. The coating on the diamond...
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5718948 |
Cemented carbide body for rock drilling mineral cutting and highway engineering
The invention relates to a coated cemented carbide body for rock drilling having a substrate containing at least one metal carbide and a binder metal and an at least partly covering coating...
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5644956 |
Rotary drill bit with improved cutter and method of manufacturing same
A rotary cone drill bit for forming a borehole having a body with an underside and an upper end portion adapted for connection to a drill string. The drill bit rotates around a central axis of the...
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5624068 |
Diamond tools for rock drilling, metal cutting and wear part applications
The present invention relates to buttons, inserts and bodies for rock drilling, rock cutting, metal cutting and wear part applications. The buttons, inserts and bodies comprise cemented carbide...
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5579856 |
Gage surface and method for milled tooth cutting structure
A milled tooth (22) is provided having a back face (38), including an upper back face surface (58) and a lower back face surface (60). A tip or top surface (36) is provided below the upper back...
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5535838 |
High performance overlay for rock drilling bits
A method to apply a high performance overlay to a metal substrate of a rock bit to render the substrate surfaces of the rock bit more resistant to erosion, corrosion and substrate cracking while...
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5518077 |
Rotary drill bit with improved cutter and seal protection
A rotary cone drill bit for forming a borehole having a body with an underside and an upper end portion adapted for connection to a drill string. The drill bit rotates around a central axis of the...
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5496638 |
Diamond tools for rock drilling, metal cutting and wear part applications
The present invention relates to buttons, inserts and bodies for rock drilling, rock cutting, metal cutting and wear part applications. The buttons, inserts and bodies comprise cemented carbide...
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5452771 |
Rotary drill bit with improved cutter and seal protection
A rotary cone drill bit for forming a borehole having a body with an underside and an upper end portion adapted for connection to a drill string. The drill bit rotates around a central axis of the...
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5429200 |
Rotary drill bit with improved cutter
A rotary cone drill bit for forming a borehole having a body with an underside and an upper end portion adapted for connection to a drill string. The drill bit rotates around a central axis of the...
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5425288 |
Manufacture of rotary drill bits
A method of manufacturing a rotary drill bit includes the steps of forming the bit body with a plurality of sockets, inserting in each socket a projecting carbon former, applying a fusible hard...
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5417475 |
Tool comprised of a holder body and a hard insert and method of using same
A breaking or excavating tool has a diamond and/or cubic boron nitride coated cutting insert mounted at the forward end of a tool body which is made of a softer material than the insert. A...
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D357486 |
Insert for rocking drilling bits
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D357485 |
Insert for rock drilling bits
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5390414 |
Gear making process
Method of manufacturing a helical gear allowing strategic placement of a hardenable wear-resistant and high strength layer at predetermined locations on the gear. The method includes the steps of...
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5348770 |
Method of forming an uninterrupted refractory coating on a downhole drill bit cone
Drill bits having projecting inserts are completely coated with refractory material including on the edge margins about the inserts by thermally spraying with refractory particles whose particulate...
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5335738 |
Tools for percussive and rotary crushing rock drilling provided with a diamond layer
The present invention relates to a rock bit button of cemented carbide for percussive or rotary crushing rock drilling. The button is provided with a layer of diamond produced at high pressure and...
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5305840 |
Rock bit with cobalt alloy cemented tungsten carbide inserts
A rock bit employs cemented tungsten carbide inserts for engaging a rock formation for drilling oil wells or the like. The cemented tungsten carbide inserts have as a binder phase a cobalt base...
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5291807 |
Patterned hardfacing shapes on insert cutter cones
A drill bit including at least one rolling cutter body with rows of relatively hard substantially outwardly projecting and circumferentially spaced cutting inserts projecting from the cutter body...
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5279374 |
Downhole drill bit cone with uninterrupted refractory coating
Drill bits having projecting inserts are completely coated with refractory material including on the edge margins about the inserts by thermally spraying with refractory particles whose particulate...
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5264283 |
Diamond tools for rock drilling, metal cutting and wear part applications
The present invention relates to buttons, inserts and bodies for rock drilling, rock cutting, metal cutting and wear part applications. The buttons, inserts and bodies comprise cemented carbide...
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5217081 |
Tools for cutting rock drilling
The present invention relates to a rock bit insert of cemented carbide for cutting rock drilling. The insert is provided with one or more bodies or layers of diamond or cBN produced at high...
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