Abstract: A directional drilling system that includes a drill bit that drills a bore through rock. The drill bit includes an outer portion of a first material and an inner portion coupled to the outer portion. The inner portion includes a second material.

Abstract: A directional drilling system that includes a drill bit that drills a bore through rock. The drill bit includes an outer portion of a first material and an inner portion coupled to the outer portion. The inner portion includes a second material.

Abstract: The present invention concerns a method and an arrangement for processing calcinated carbon bodies such as anodes or cathodes for use in connection with electrolytic production of aluminium. The carbon bodies are processed using a rotating processing tool (101) that consists of a mainly circular disc with cutting edges (114) mounted at its periphery. The cutting edges may be made of polycrystalline diamond (PCD) or an equivalent material. The rotating processing tool mounted on a rotating, driven spindle and is guided by guiding elements (110) that can be jets or perforated discs that blows pressurized air at the tool, or rollers (120). With the present invention it is possible to create narrow and deep slots in calcinated carbon bodies in an efficient manner with low tool wear.

Abstract: A locking ring positioned between first and second components. The locking ring includes a body having first and second opposing axial surfaces and a bore formed axially therethrough. A recess is formed into the second axial surface. The recess is defined by an outer radial surface, first and second opposing circumferentially offset surfaces, and an inner axial surface disposed between the first and second axial surfaces. At least a portion of the first circumferentially offset surface is oriented at an angle between 30° and 85° with respect to a plane that is perpendicular to a longitudinal centerline through the body.

Abstract: A locking ring may be adapted to be positioned between first and second components. The locking ring may include a body having a bore formed axially therethrough. A blade may be disposed on an outer radial surface of the body. At least a portion of a centerline through the blade may be oriented at an angle from about 1° to about 60° with respect to a centerline through the body. A recess, a protrusion, or both may be formed in an outer axial surface of the body.

Abstract: The present invention concerns a method and a device for processing calcinated carbon bodies such as anodes or cathodes for use in connection with electrolytic production of aluminum. The carbon bodies are processed using a rotating processing tool that includes a mainly circular disc with cutting edges mounted at its periphery. The cutting edges may be made of polycrystalline diamond (PCD) or an equivalent material. Thus, it is possible to create slots in calcinated carbon bodies in an efficient manner with low tool wear.

Abstract: The present invention concerns a method and a device for processing calcinated carbon bodies such as anodes or cathodes for use in connection with electrolytic production of aluminium. The carbon bodies are processed using a rotating processing tool (1) that consists of a mainly circular disc with cutting edges (12, 12?) mounted at its periphery. The cutting edges may be made of polycrystalline diamond (POD) or an equivalent material. With the present invention it is possible to create slots in calcinated carbon bodies in an efficient manner with low tool wear.