Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 8061452 | Cutting element apparatuses, drill bits including same, methods of cutting, and methods of rotating a cutting element A subterranean drilling system may include a drill string and a rotary drill bit coupled to the drill string. The rotary drill bit may include a bit body and a cutting element coupled to the bit body, with the cutting element being structured to rotate in response t... | 11/22/2011 |
| 7845436 | Cutting element apparatuses, drill bits including same, methods of cutting, and methods of rotating a cutting element A subterranean drilling system may include a drill string and a rotary drill bit coupled to the drill string. The rotary drill bit may include a bit body and a cutting element coupled to the bit body, with the cutting element being structured to rotate in response t... | 12/07/2010 |
| 7364390 | Drilling tool Disclosed is a drilling tool comprising a first drill bit (2) that is provided with at least two forward cutting edges (4, 5) and a second drill bit (3) which encompasses at least two rear cutting edges (6, 7). A cutting groove (8, 9 | 04/29/2008 |
| 7293616 | Expandable bit An expandable drill bit for use with earth drilling equipment. The bit includes arms held in a closed position, so that the bit may be inserted through casing or a small bore hole. The arms are expandable to create an expanded drill bit having a crown profile common... | 11/13/2007 |
| 7270182 | Earth loop installed with sonic apparatus A method for installing a heat exchange pipe loop in a borehole, the method, in at least certain aspects, including drilling a borehole with a sonic drill system having a head and casing connected thereto, a drill apparatus on a lower end of the casing movable by th... | 09/18/2007 |
| 7152380 | Apparatus and method for repairing popped wallboard nails An apparatus and a method for repairing nail pops in a wallboard is disclosed. The apparatus can be placed In a first state in which it acts as a cutting tool and can be used to cut a bore hole into a wallboard to separate a popped nail from the wallboard. The appar... | 12/26/2006 |
| 7143847 | Drilling apparatus Drilling apparatus, such as an underreamer (20) comprises a generally cylindrical tubular body (22) and two cutting blades (26, 27) pivotally mounted to the body and movable between a retracted position and an extended position. Each cutting bla... | 12/05/2006 |
| 7131505 | Drilling with concentric strings of casing The present invention provides a method and apparatus for setting concentric casing strings within a wellbore in one run-in of a casing working string. In one aspect of the invention, the apparatus comprises a drilling system comprising concentric casing strings, wi... | 11/07/2006 |
| 7097396 | Drill bit An object of the present invention is to provide a drill bit which is simple in design, high in rigidity, and superior in durability and whose drilling function is in no way inferior to that of conventional drilling bits. To this end, in a drill bit comprising a cut... | 08/29/2006 |
| 7093657 | Earth loop installed with sonic apparatus A method for installing a heat exchange pipe loop in a borehole, the method, in at least certain aspects, including drilling a borehole with a sonic drill system having a head and casing connected thereto, a drill apparatus on a lower end of the casing movable by th... | 08/22/2006 |
| 7029210 | Cutting tool with indexable insert A circulating tool for cutting of workpieces including a carrier element that bears at least one cutter blade insert in an exactly positioned manner. A device is provided for adjusting the position of the insert relative to the carrier element and a clamping device ... | 04/18/2006 |
| 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 the slot defines inner side wails and a bridge extending between the... | 11/29/2005 |
| 6955219 | Earth loop installation with sonic drilling A method for installing a heat exchange pipe loop in a borehole, the method in at least certain aspects, including drilling a borehole with a sonic drill system having a head and casing connected thereto, a drill shoe on a lower end of the casing movable by the soni... | 10/18/2005 |
| 6926100 | Hole reaming apparatus and method An enhanced reaming apparatus and method are disclosed. A reaming assembly may have a motor and a pump that provide linear force, torsional force, and pressurized drilling fluid to a reamer to cause the reamer to enlarge the bore of a pilot hole. The reamer may have... | 08/09/2005 |
| 6131675 | Combination mill and drill bit A combination milling and drilling bit which can be converted from a first type of cutting operation to a second type of cutting operation by hydraulically moving a plurality of movable blades to extend beyond a plurality of fixed blades. The fixed blades... | 10/17/2000 |
| 5623978 | Stump cutting double claw tooth structure A double claw stump cutting tooth having two cutting heads having cutting faces angled to slice into a stump with both heads adapted for simultaneously cutting or chipping a stump.... | 04/29/1997 |
| 4889194 | Method and a device for deep hole drilling A device for drilling deep holes in the ground has at least two axial drill bits and an equal number of plates each having three shafts axially interconnecting the plates. Two of the shafts are rigidly attached to both plates and the third shaft is pivota... | 12/26/1989 |
| 4858706 | Diamond drill bit with hemispherically shaped diamond inserts A rotary drill bit is provided which uses a plurality of hemispherically shaped diamond cutting elements, each having a cleaved, planar face. The diamonds are disposed in the bit such that the planar faces provide a plurality of knife-like cutting surface... | 08/22/1989 |
| 4654947 | Drill bit and method of renewing drill bit cutting face Method and apparatus by which the cutting face of a drill bit is renewed. The drill bit has a cutting face comprised of a plurality of radially spaced apart stud assemblies, each received within a socket. A polycrystalline diamond disc forms one end of th... | 04/07/1987 |
| 4527931 | Indexable insert for mining drill A removable and indexable insert includes forwardly and rearwardly projecting faces forming cutting edges with side surfaces and concave end surfaces forming side cutting edges.... | 07/09/1985 |
| 4355932 | Indexable spade drill blade The present invention relates generally to spade drills and more particularly to an indexable spade drill blade which is adapted to be clamped in the clamp slit of a boring bar or holder and which may be readily reversed so that an unused cutting edge may... | 10/26/1982 |
| 4320925 | Dredge cutterhead tooth A rock cutting tooth assembly for a dredge cutterhead in which each tooth has a cutting edge formed by the intersection of a cutting face substantially lengthwise with the tooth and a flank substantially transverse to the tooth, the cutting face lying in ... | 03/23/1982 |
| 4298233 | Milling tool for a rotating milling cylinder The invention relates to a milling tool for a rotating milling cylinder with milling head possibly equipped with hard metal, for milling away bonded mineral materials, having a stop part and retaining part for insertion into the radially outwardly open to... | 11/03/1981 |
| 4193638 | Multiple tip cutting bit for rotary drum-type cutter A particularly better rotary cutter for a road planing machine and the like has special holders provided with multi-sided tapered sockets extending generally tangential to the drum surface. A multiple tip cutting bit suitable for use with the aforemention... | 03/18/1980 |
| 4100983 | Boring device A boring device adapted for deep well drilling wherein a cutting plate is fixed in operative position in a recess of a boring head by means of a clamping bolt. The cutting plate is reversible and its position in the boring head is adapted to be adjusted i... | 07/18/1978 |
| 4079796 | Cutting machine and augering tool A machining and augering bit, particularly adapted for earth cutting, has a dual-headed tool holder. Each head receives a work piece which carries a rotatable tool bit. The head includes spaced apart first and second portions, the interior surfaces of whi... | 03/21/1978 |
