Matches 1 - 26 out of 26
Match Document Document Title
7032693 Preformed tooth for tooth bit  
A method of forming a tooth rock bit is disclosed. In one embodiment, the method includes attaching the at least one cutting element to a surface of a cone, and depositing a hard facing layer on at...
6923276 Streamlined mill-toothed cone for earth boring bit  
An earth-boring bit has a bit body, at least one cantilevered bearing shaft depending inwardly and downwardly from the bit body, and a cutter mounted for rotation on the bearing shaft. The cutter...
6725952 Bowed crests for milled tooth bits  
A drill bit has a bit body and at least one roller cone rotatably mounted on the bit body. The cone has a plurality of milled teeth at selected locations on the cone. At least one of the milled...
6595304 Roller bit parallel inlayed compacts  
This invention relates to a roller bit applying for the oil, natural gas, mine and geological drilling, and more particularly relates to a kind of roller bit with the parallel inlayed compacts, it...
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...
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...
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...
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...
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...
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...
5778994 Claw tooth rotary bit  
A claw tooth rotary bit having teeth that are constructed from a hard material that is combined with a softer material so that the teeth wear unevenly as the bit is used to bore through an earth...
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...
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...
5615747 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...
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...
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...
5445231 Earth-burning bit having an improved hard-faced tooth structure  
An earth-boring bit has a bit body, at least one cutter rotatably secured to the bit body and including a plurality of teeth formed integrally with the cutter and arranged in circumferential rows...
4726432 Differentially hardfaced rock bit  
A method for manufacturing an earth boring drill bit and bit produced thereby are shown. The bit has rotatable cutters with a plurality of milled teeth, each of the teeth having opposing flanks. A...
4722405 Wear compensating rock bit insert  
A composite sintered rock bit insert for use in a rolling cutter is fabricated from two tungsten carbide components. The first component is formed of a tungsten carbide composite that is less wear...
4452325 Composite structure for cutting tools  
A cutting tool comprises a compact bundle of elongated, substantially cylindrical fibers or rods formed from a cemented metal carbide material. The bundle of fibers is shrink-fitted within a metal...
Matches 1 - 26 out of 26