Matches 1 - 33 out of 33
Match Document Document Title
7387763 Preparation of sheet by injection molding of powder, consolidation, and heat treating  
A sheet is prepared by mixing a mass of metallic powders with a temporary thermoplastic binder to form an injection-moldable mixture, thereafter injection molding the injection-moldable mixture to...
7303030 Barrier coated granules for improved hardfacing material  
A hardfacing composition for a drill bit includes a carbide phase made from carbide particles having a barrier coating disposed thereon, and binder alloy. Also, a drill bit includes a steel bit...
7210377 Cone erosion protection for roller cone drill bits  
A method of forming a drill bit structure, the method including fixing spacers to the drill bit structure. The spacers are arranged at preselected locations on an outer surface of the drill bit...
6981799 Slide bearing for a centrifugal pump  
A slide bearing for a centrifugal pump in which the slide bearing is lubricated by the pumped medium and is composed of a stationary part disposed in the housing of the centrifugal pump and a...
6766870 Mechanically shaped hardfacing cutting/wear structures  
A hardfacing material is applied to cutting elements formed on the surface of cutters of an earth-boring bit. The hardfacing material forms the outer surface of the teeth, and also substantially...
6651756 Steel body drill bits with tailored hardfacing structural elements  
Hardfacing is deposited on a PDC-equipped steel body rotary drag bit and forms substantially protruding structural elements, such as wear knots or chip breakers. Hardfacing may also be applied to...
6615936 Method for applying hardfacing to a substrate and its application to construction of milled tooth drill bits  
A method for applying hardfacing to teeth on a drill bit is disclosed. The method includes applying the hardfacing to at least one of the teeth so as to have a thickness selected to correspond to a...
6440358 Fabrication process for powder composite rod  
The present invention relates to a method of forming a powder rod core comprising injecting a powder mix material into a mold, moving the mold to a curing station, and injecting material into a...
6361739 Fabrication process for high density powder composite hardfacing rod  
The present invention is a new method for forming a high density hard facing rod. The rod is particularly suitable for hardfacing downhole tools including both fixed cutter and rolling cutter drill...
6360832 Hardfacing with multiple grade layers  
An earth-boring bit has hardfacing that has multiple grades and an overlapped portion. One of the layers is of a different grade than the other so as to provide more wear resistance. The other...
RE37127 Hardfacing composition for earth-boring bits  
A hardfacing composition comprises at least 60% by weight of hard metal granules including a quantity of sintered carbide pellets and a quantity of cast carbide pellets. The cast and sintered...
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...
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...
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...
6029759 Hardfacing on steel tooth cutter element  
A steel tooth particularly suited for use in a rolling cone bit includes a parent metal core having an inner gage facing surface, leading and trailing edges, a root region adjacent to the cone and...
5944127 Hardfacing material for rock bits  
A hardfacing material for shirttail and gage surfaces of a rock bit cone and a gage row of rock bit teeth comprises steel in the range of from 20 to 40 percent by weight, and tungsten carbide...
5915486 Cutter element adapted to withstand tensile stress  
A cutter element having a substantially flat wear face and leading compression and trailing tension zones, wherein the leading compression zone is sharper than the trailing tension zone. Sharpness...
5868213 Steel tooth cutter element with gage facing knee  
A steel tooth, particularly suited for use in a rolling cone bit, includes a root region, a cutting tip spaced from the root region and a gage facing surface therebetween. The gage facing surface...
5839526 Rolling cone steel tooth bit with enhancements in cutter shape and placement  
A steel tooth bit includes one or more rolling cone cutters having a generally conical surface, a heel surface, and preferably a transition surface therebetween. A row of gage cutter elements are...
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...
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...
5740872 Hardfacing material for rolling cutter drill bits  
A material for applying hardfacings to the teeth of steel tooth rolling cutter drill bits comprises a mixture of refractory metal carbide, such as tungsten carbide, cobalt and metallic matrix...
5733664 Matrix for a hard composite  
A matrix powder for formation along with an infiltrant into a matrix for use as a wear element or for use in retaining at least one discrete hard element. The matrix powder includes crushed...
5733649 Matrix for a hard composite  
A matrix powder for formation along with an infiltrant into a matrix for use as a wear element or for use in retaining at least one discrete hard element. The matrix powder including...
5715899 Hard facing material for rock bits  
An improved hard facing for teeth and other surfaces of milled tooth rock bits comprises steel in the range of from 18 to 32 percent by weight, and filler in the range of from 68 to 82 percent by...
5663512 Hardfacing composition for earth-boring bits  
A hardfacing composition comprises at least 60% by weight of hard metal granules including a quantity of sintered carbide pellets and a quantity of cast carbide pellets. The cast and sintered...
5589268 Matrix for a hard composite  
A matrix powder for formation along with an infiltrant into a matrix for use as a wear element or for use in retaining at least one discrete hard element. The matrix powder including...
5492186 Steel tooth bit with a bi-metallic gage hardfacing  
An earth boring bit rotatable cutter having a first hardfacing composition of carbide particles selected from the class of cast and macrocrystalline tungsten carbide dispersed in a steel matrix...
5351771 Earth-boring bit having an improved hard-faced tooth structure  
An earth-boring bit has a bit body and at least one cutter rotatably secured to the bit body. The cutter has a plurality of teeth formed integrally thereon and arranged in circumferential rows....
5351769 Earth-boring bit having an improved hard-faced tooth structure  
An earth-boring bit has a bit body and at least one cutter rotatably secured to the bit body. The cutter has a plurality of teeth formed integrally thereon and arranged in circumferential rows....
5250355 Arc hardfacing rod  
An arc hardfacing rod including a tubular member, a filler material, an insulating coating and a plurality of discrete metal carbide particles set within the insulating coating such that a surface...
5221295 Grinding aid formulations  
Coated abrasives provided with a coating comprising a grinding aid and a binder resin are particularly effective when the grinding aid is an halogenated hydrocarbon.
5201917 Plate with an abrasion-proof surface and process for the production thereof  
The present invention relates to the manufacture of abrasion-proof plates. The abrasion-proof surface of the plate is composed of external face 5 of a layer of composite material based on spherical...
Matches 1 - 33 out of 33