Matches 1 - 50 out of 141 1 2 3 >
Match Document Document Title
7395885 Cutting element with canted interface surface and bit body incorporating the same  
The present invention provides a cutting element having a cylindrical body having a canted end face on which is formed an ultra hard material layer and to a bit incorporating such cutting element....
7363992 Cutters for downhole cutting devices  
Improved cutter design as well as an improved design for downhole cutters, such as mandrel cutters and rotary cutter mills. A cutter is described with a rectangular, rounded “lozenge” shape....
7231992 Drill bit  
A drill bit has, on its face, a combination of at least one straight cutting edge and at least two curved cutting edges arranged in a Y-shape. The cutting edges on the face of the drill bit are...
7165636 Cutting element with canted interface surface and bit body incorporating the same  
The present invention provides a cutting element having a cylindrical body having a canted end face on which is formed an ultra hard material layer and a method of forming the same. One or a...
7152703 Compact for earth boring bit with asymmetrical flanks and shoulders  
A tungsten carbide compact of an earth boring bit has a cutting tip that is generally chisel-shaped with substantially flat flanks converging to an elongated crest. One of the flanks is smaller and...
7140448 Stepped polycrystalline diamond compact insert  
The present invention addresses this need in the art by providing a cutter insert comprising a plug section and a cutter pedestal. The cutter insert is preferably formed of tungsten carbide, except...
7086489 Multi-lobed cutter element for drill bit  
Disclosed are cutter elements for a drill bits having particular, but not exclusive, application on the nose portion of the cone cutters of a rolling cone bit. The cutter elements include a base, a...
7013999 Wedge tooth cutter element for drill bit  
A cutter element for a rolling cone bit includes a cutting surface having front and back surfaces, a pair of flanking surfaces that intersect in a rounded nose that is offset from the central axis...
6997273 Blunt faced cutter element and enhanced drill bit and cutting structure  
The cutter element includes a rounded apex offset from the center line of the insert and having a relatively broad and blunt front face and a narrower, more rounded rear face. The cutter element...
6991049 Cutting element  
The present invention provides a cutting element having a cylindrical body having a canted end face on which is formed an ultra hard material layer and a method of forming the same. One or a...
6968912 Drill blades for drill bit  
A drill bit consists of a bit body having a forward end and a slot in the forward end to hold a hardened cutting blade. The blade has a central slot extending into the forward end thereof such that...
6945340 Roof bit and insert assembly  
A center vacuum rotary drill bit including a rotary drill bit body and an insert. The bottom surface of the slot has a projecting key that cooperates with a depression keyway of the insert....
6929079 Drill bit cutter element having multiple cusps  
Cutter elements for use in rolling cones rock bits are disclosed having a crown that includes multiple, spaced-apart cusps for enhancing formation removal by creating overlapping Hertzian contact...
6904984 Stepped polycrystalline diamond compact insert  
The present invention addresses this need in the art by providing a cutter insert comprising a plug section and a cutter pedestal. The cutter insert is preferably formed of tungsten carbide, except...
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...
6883624 Multi-lobed cutter element for drill bit  
Cutter elements for a drill bits having particular, but not exclusive, application on the nose portion of the cone cutters of a rolling cone bit include a base, a cutting portion, and a plurality...
6868924 Rock drill  
A rock drill including a helical shank and a drill head. The drill head has an end face pointing in a feed direction and at least one roof-shaped carbide cutting element on the end face of the rock...
6860344 Monolithic roof cutting bit insert  
A rotary drill bit for penetrating earth strata wherein the drill bit includes a drill bit body that has an axial forward end. The drill bit body has a hard insert, which is preferably monolithic,...
6843334 Drilling head of a rock drill  
A drilling head of a rock drill for use with a hand-held power tool is formed completely of a hard material and includes a main bit ( 2 ) and at least one auxiliary bit ( 3 a , 3 b ). The at least...
6782959 Cutter element with non-linear, expanded crest  
A cutter element for a drill bit has a crest that defines a crest line. The crest can be non-rectilinear. The crest line of each cutter element defines an angle with respect to the axis of the...
6739417 Superabrasive cutters and drill bits so equipped  
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...
6684968 Roof bit body and insert assembly  
A center vacuum rotary drill bit including a rotary drill bit body and an insert. The bottom surface of the slot has a projecting key that cooperates with a depression keyway of the insert....
6672406 Multi-aggressiveness cuttting face on PDC cutters and method of drilling subterranean formations  
Methods of drilling subterranean formations with rotary drag bits equipped with cutting elements including superabrasive, multi-aggressive cutting faces or profiles which are especially suitable...
6588520 Rock drill  
A rock drill has at least one hard material insert ( 2 ) with at least two cutting edges ( 3, 7 ) consisting of hard material and extending radially to the drill axis (A), whereby, in a radial...
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...
6561293 Cutter element with non-linear, expanded crest  
A cutter element for a drill bit has a non-rectilinear crest. The cutter element has a base portion and an extending portion and the extending portion has either a zero draft or a negative draft...
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...
6527065 Superabrasive cutting elements for rotary drag bits configured for scooping a formation  
Cutting elements for use in a rotary drill bit are configured to facilitate positioning of the cutting elements at a positive rake angle with respect to the formation to enhance compressive...
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...
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...
6460637 Engineered enhanced inserts for rock drilling bits  
Enhanced inserts are formed having a cylindrical grip and a protrusion extending from the grip. An ultra hard material layer is bonded on top of the protrusion. The inserts are mounted on a rock...
6419034 Engineered enhanced inserts for rock drilling bits  
Enhanced inserts are formed having a cylindrical grip and a protrusion extending from the grip. An ultra hard material layer is bonded on top of the protrusion. The inserts are mounted on a rock...
6394199 Non-circular gauge reaming row inserts  
Disclosed is a wear resistant cutting insert for use in rolling cutter drill bits. The insert has a cylindrical shank that is readily fitted in an interfering manner into cylindrical sockets formed...
6367568 Steel tooth cutter element with expanded crest  
A cutter element for a drill bit. The cutter element has a base portion and an extending portion and the extending portion has either a zero draft or a negative draft with respect to the base...
6332503 Fixed cutter bit with chisel or vertical cutting elements  
An array of chisel-shaped cutting elements are mounted to the face of a fixed cutter bit. Each cutting element has a crest and an axis which is inclined relative to the borehole bottom. The cutting...
6330924 Superhard drill bit heel, gage, and cutting elements with reinforced periphery  
A planar or convex heel, gage, or cutting element comprising one or more layers of superhard materials bonded to a metal-carbide substrate. The substrate's perimeter is inclined and comprises one...
6283234 Apparatus for mounting PCD compacts  
A method and apparatus for improved attachment of an ultra-hard compact, especially a two-layer disk-type PCD compact, to a tool or support surface with a mechanical connection. In general the...
6241035 Superhard material enhanced inserts for earth-boring bits  
Superhard material enhanced inserts and methods of making the same have been disclosed. The enhanced insert includes a body portion adapted for attachment to the earth-boring bit and a top portion...
6241034 Cutter element with expanded crest geometry  
A cutter element for a drill bit. The cutter element has a base portion and an extending portion and the extending portion has either a zero draft or a negative draft with respect to the base...
6227318 Superhard material enhanced inserts for earth-boring bits  
Superhard material enhanced inserts include a body portion adapted for attachment to the earth-boring bit and a top portion for contacting an earthen formation to be drilled. The top portion...
6220376 Drill bit and button  
A drill bit has a plurality of cemented carbide buttons embedded in a front end of the drill body. Each button includes a cemented carbide body having a rear mounting portion embedded in the drill...
6202771 Cutting element with controlled superabrasive contact area, drill bits so equipped  
Cutting elements providing a relatively constant superabrasive area in contact with the formation responsive to weight on bit during a substantial portion of the useful life of a circular cutting...
6202769 Drilling stabilizer  
A high-performance drilling stabilizer is provided that is high in both wear resistance and strength. Blades are bonded to a stabilizer body. The blade is split into at least two segments. The...
6199451 Tool having a tungsten carbide insert  
An excavating tool has a tungsten carbide insert which is more wear resistant and not subject to breakage because of bring too brittle. The insert has a semispherical tip, a divergent midsection...
6196341 Reduced residual tensile stress superabrasive cutters for earth boring and drill bits so equipped  
A superabrasive cutting element, the substrate of which is structured with a reduced dimension circumferential portion about which is formed an annular portion of superabrasive material, such as...
6161634 Cutter element with non-rectilinear crest  
A cutter element for a drill bit. The cutter element has a non-rectilinear crest. The non-rectilinear or curvilinear crest provides an advantageous distribution of the cutting forces across the...
6135219 Earth-boring bit with super-hard cutting elements  
An earth-boring bit has a bit body and at least one cantilevered bearing shaft depending inwardly and downwardly from the bit body. A cutter is mounted for rotation on the bearing shaft and...
6131678 Preform elements and mountings therefor  
A preform element comprises a substrate having an outer peripheral surface and at least one end surface. At least a portion of the peripheral surface of the substrate has bonded thereto an inner...
6119798 Rock drill bit and cutting inserts  
The present invention relates to a cutting insert for a rock drill bit. The rock drill bit includes a tool body (10) having a front surface (13), and a number of cutting inserts (14), each having a...
6065554 Preform cutting elements for rotary drill bits  
A preform cutting element for a rotary drag-type drill bit comprises a front facing table of superhard material having a front surface, a peripheral surface, a rear surface bonded to a substrate of...
Matches 1 - 50 out of 141 1 2 3 >