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Ballistic resistant body covering
A ballistic resistant body covering for protecting the torso, groin and neck area from ballistic missiles.
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| Number | Title | Issue Date |
| 8020643 | Ultra-hard constructions with enhanced second phase Ultra-hard constructions include an ultra-hard body having a first region including a polycrystalline matrix first phase and a second phase material interposed therein. The first region is substantially free of a catalyst material used to form the first phase. The b... | 09/20/2011 |
| 7647993 | Thermally stable diamond bonded materials and compacts Thermally stable diamond bonded materials and compacts include a diamond body having a thermally stable region and a PCD region, and a substrate integrally joined to the body. The thermally stable region has a microstructure comprising a plurality of diamond grains ... | 01/19/2010 |
| 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. Braze alloy is also disposed in the cavity between the cutting element a... | 09/11/2007 |
| 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 and the diamond element 12 in order to bon... | 08/28/2007 |
| 7234550 | Bits and cutting structures An insert for a drill bit which includes a diamond impregnated body, and a shearing portion disposed on said body is shown. In addition, a method for forming a drill bit that includes (a) forming a shearing portion on a diamond-impregnated insert body to form a cutt... | 06/26/2007 |
| 7159487 | Method for making a 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 form a mounting pad for a cutting element. The displacement comprises a... | 01/09/2007 |
| 7100711 | Single cone rock bit having inserts adapted to maintain hole gage during drilling A roller cone drill bit is disclosed which includes a bit body adapted to be coupled to a drill string. A bearing journal depends from the bit body. A single roller cone is rotatably attached to the bearing journal. The roller cone has a plurality of inserts dispose... | 09/05/2006 |
| 7086488 | Cutting element having enhanced cutting geometry A drill bit that includes a bit body, at least one roller cone attached to the bit body and able to rotate with respect to the bit body, a plurality of cutting elements disposed on the at least one roller cone, and a barrel axis is disclosed. At least one of the plu... | 08/08/2006 |
| 7040424 | Drill bit and cutter having insert clusters and method of manufacture Disclosed is a rolling cone cutter and drill bit employing multiple inserts retained as a cluster in an aperture in the cone cutter. Apertures in which the insert clusters are retained are multilobed apertures formed by intersecting bores formed in the cone steel. T... | 05/09/2006 |
| 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 cutter disposed in the cutter pocket is disclosed. The method include... | 08/10/2004 |
| 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 material impregnated with a particulate superabrasive material laminat... | 06/01/2004 |
| 6513608 | Cutting elements with interface having multiple abutting depressions Cutting elements for incorporation in a drill bit are provided having a body and an ultra hard material cutting layer over an end face of the body. A plurality of abutting shallow depressions are formed on the end face of the body. A transition layer may ... | 02/04/2003 |
| 6481511 | Rotary drill bit A rotary drill bit includes cutters arranged in a series of concentric rings, the cutters of one of the rings having a different wear resistance to the cutters of another of the rings with the result that the stability of the drill bit improves with wear.... | 11/19/2002 |
| 6439327 | Cutting elements for rotary drill bits A preform cutting element, for a rotary drill bit, and a rotary drill bit with prefrom cutting elements including a facing table of superhard material having a front face, a rear surface is bonded to the front surface of a substrate which is less hard tha... | 08/27/2002 |
| 6244364 | Earth-boring bit having cobalt/tungsten carbide inserts An earth-boring device such as a drill bit is disclosed. The earth boring device includes a rotary main cutting structure, an insert on the main cutting structure. The insert is formed of a composition having tungsten carbide and cobalt. The cobalt makes ... | 06/12/2001 |
| 6039127 | Rock drill A rock drilling bit for drilling bores in rock, more particularly to a percussion rock drilling bit. Specifically, a rock drilling bit having hard material cutting inserts affixed to an austempered ductile iron (ADI) drill body, and a method of drilling r... | 03/21/2000 |
| 5954147 | Earth boring bits with nanocrystalline diamond enhanced elements An earth boring bit is shown of the type used to drill subterranean formations. The bit body has an upper extent which is threaded for connection in a drill string extending to the earth's surface. A lower extent of the bit body has a number of cutting el... | 09/21/1999 |
| 5833021 | Surface enhanced polycrystalline diamond composite cutters A polycrystalline diamond cutter having a coating of refractory material applied to the polycrystalline diamond surface increases the operational life of the cutter. The coating typically has a thickness in the range of from 0.1 to 30 μm and may be made ... | 11/10/1998 |
| 5492188 | Stress-reduced superhard cutting element A cutting element suitable for incorporation in a drill bit used for earth drilling is disclosed which comprises an abrasive layer of superhard material formed on a substrate support, the substrate and/or the abrasive layer being structurally modified to ... | 02/20/1996 |
| 5487436 | Cutter assemblies for rotary drill bits A method of forming a cutter assembly for a rotary drill bit comprises locating in a mould a preform polycrystalline diamond cutting element of a non-thermally stable type, packing powdered matrix-forming material, such as powdered tungsten carbide, aroun... | 01/30/1996 |
| 5477785 | Well pipe perforating gun A well pipe perforating gun (10) is improved by the utilization of a pulverable support structure (14) to hold the explosive shaped charges (18a, 18b, etc.) and the fireset (20). When the gun (10) is fired, the support structure (14) disintegrates substan... | 12/26/1995 |
| 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 pressure and high temperature in the diamond or cBN stable area. ... | 06/08/1993 |
| 5030276 | Low pressure bonding of PCD bodies and method An improved temperature stable synthetic polycrystalline diamond (PCD) product includes at least one temperature stable PCD integrally and chemically bonded to a matrix carrier support through a carbide forming layer which is of a thickness of at least ab... | 07/09/1991 |
| 5011515 | Composite polycrystalline diamond compact with improved impact resistance A compact blank for use in operations that require very high impact strength and abrasion resistance is disclosed. The compact comprises a substrate formed of tungsten carbide or other hard material with a diamond or cubic boron nitride layer bonded to th... | 04/30/1991 |
| 5000273 | Low melting point copper-manganese-zinc alloy for infiltration binder in matrix body rock drill bits A novel infiltration alloy comprises about 5 to 65% by weight of manganese, up to about 35% by weight of zinc, and the balance copper. Preferably, the infiltration alloy comprises 20% by weight of manganese, 20% by weight of zinc, and the balance copper. ... | 03/19/1991 |
| 4919220 | Cutting structures for steel bodied rotary drill bits A rotary drill bit for use in drilling or coring holes in subsurface formations comprises a bit body having a shank for connection to a drill string, a plurality of cutting structures mounted at the surface of the bit body, and a passage in the bit body f... | 04/24/1990 |
| 4811801 | Rock bits and inserts therefor The present invention is a rock bit insert including a polycrystalline diamond surface on an insert body having a head portion made from a material with elasticity and thermal expansion properties advantageously tailored for use in three types of rock bit... | 03/14/1989 |
| 4781256 | Cutting structures for rotary drill bits A method of forming a cutting structure for a rotary drill bit comprises brazing a thermally stable polycrystalline diamond cutting element to a carrier, the carrier being formed of a material such that, at the brazing temperature, the difference in coeff... | 11/01/1988 |
| 4780274 | Manufacture of rotary drill bits A method of manufacturing by a powder metallurgy process a rotary drill bit including a bit body having a plurality of cutting elements mounted on the outer surface thereof comprises the steps of forming a hollow mould for moulding at least a portion of t... | 10/25/1988 |
| 4767050 | Pocketed stud for polycrystalline diamond cutting blanks and method of making same Disclosed is an improved brazed implement comprising a composite compact having an abrasive particle layer bonded to a support and a substrate bonded to the support by a brazing filler metal having a liquidus substantially above 700° C. disposed therebet... | 08/30/1988 |
| 4764255 | Cemented carbide tool A tool or wear part comprises a cast iron or cast steel body carrying a plurality of cast-in inserts. Each insert comprises a cemented carbide cutting or wearing element partially embedded in the body, and an enclosure completely surrounding the embedded ... | 08/16/1988 |
| 4702649 | Polycrystalline diamond and CBN cutting tools A cutting tool comprised of an annular polycrystalline layer of diamond or cubic boron nitride integrally adhered to an annular recess in an upper peripheral portion of an integral cemented carbide substrate structure, said layer having a round cutting ed... | 10/27/1987 |
| 4699227 | Method of forming cutting structures for rotary drill bits A method of forming a cutting structure for a rotary drill bit comprises brazing a thermally stable polycrystalline diamond cutting element to a carrier, the carrier being formed of a material such that, at the brazing temperature, the difference in coeff... | 10/13/1987 |
| 4676124 | Drag bit with improved cutter mount An earth boring drag bit is shown having polycrystalline diamond cutters mounted in cavities within the body thereof in a manner that, at the juncture of the dissimilar geometry of the cutters and the body, defines voids adjacent the cutters. These voids ... | 06/30/1987 |
| 4624830 | Manufacture of rotary drill bits A method of manufacturing by a powder metallurgy process a rotary drill bit including a bit body having a plurality of cutting elements mounted on the outer surface thereof comprises the steps of forming a hollow mould for moulding at least a portion of t... | 11/25/1986 |
| 4520881 | Tool component A tool component comprising a composite compact located in a sloping recess in one end of a solid, elongate right-circular cylindrical pin and bonded thereto. The recess is characterized in that it is formed in the pin to one side of a longitudinal plane ... | 06/04/1985 |
| 4505721 | Abrasive bodies There is provided an abrasive body comprising a composite abrasive compact bonded to a metal containing substrate, typically made of cemented carbide, through a bonding layer comprising nickel, copper, cobalt, iron or an alloy containing one or more of th... | 03/19/1985 |
| 4453605 | Drill bit and method of metallurgical and mechanical holding of cutters in a drill bit Disclosed is a method and apparatus for mechanically and metallurgically holding a cutter in a drill bit pocket. The method includes using powder metallurgy techniques in the formation of a drill bit member having a plurality of pockets configured to inhi... | 06/12/1984 |
| 4359335 | Method of fabrication of rock bit inserts of tungsten carbide (WC) and cobalt (Co) with cutting surface wear pad of relative hardness and body portion of relative toughness sintered as an integral composite A method of fabricating a rock bit insert which has improved wear characteristics is disclosed. Selected surfaces of the insert are implanted with a harder grade of tungsten carbide and sintered thereto. The special insert then would find application in t... | 11/16/1982 |
| 4350215 | Drill bit and method of manufacture A drag drill bit includes a plurality of cutter assemblies comprising synthetic polycrystalline diamonds which are held by brazing material within dimensionally controlled pockets formed in the drill bit matrix. The method of manufacturing the bit include... | 09/21/1982 |
