Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8028769 | Reamer with stabilizers for use in a wellbore A reamer bit for use in earth boring operations comprising a body, cutter mounts having rolling cutters on the bit body, and stabilizers pads on the body placed between adjacent cutter mounts. The reamer may further include a pilot bit on a drill pipe extending down... | 10/04/2011 |
| 7293617 | Polycrystaline diamond compact insert reaming tool A reaming tool including a body adapted to couple to a drill string at both axial ends thereof, the body including a plurality of reaming blades affixed at azimuthally spaced apart locations around the circumference of the body, wherein selected ones of the pluralit... | 11/13/2007 |
| 7140983 | Divot tool for golfer An improved divot tool for golfers, which tool includes textured or contoured tines for more effectively mechanically engaging soil beneath a divot to thereby more effectively manipulate and de-compact the soil in remediation of a divot. ... | 11/28/2006 |
| 7137463 | Polycrystaline diamond compact insert reaming tool A reaming tool that includes a body having reaming blades affixed thereto. The reaming blades each have at least one cutter attached thereto at a selected position and orientation. The plurality of reaming blades includes at least one radially most extensive reaming... | 11/21/2006 |
| 6935443 | Mini disk bit A small sized disk bit includes a bit holder accommodated in a bearing journal on its side (overhangingly), and a disk body with asymmetrically designed wedge flanks mounted rotatably thereon. To enable the disk body to absorb high radial and axial strong forces enc... | 08/30/2005 |
| 6902014 | Roller cone bi-center bit A roller cone bi-center bit for economically drilling an enlarged borehole below casing in earth formation is provided. The bi-center bit includes a rolling cone cutter or other appropriate cutter to enlarge a pilot bore also made by rolling cone or other type of cu... | 06/07/2005 |
| 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 of cutting lobes extending radially from the cutting portion. Each lob... | 04/26/2005 |
| 6739416 | Enhanced offset stabilization for eccentric reamers Enhanced stabilization is provided for an eccentric reaming tool when a pilot borehole is undersized with respect to a following pilot stabilization pad (PSP). Alternatively, offset of a rotational axis of at least a portion of the assembly including the reaming too... | 05/25/2004 |
| 6609580 | Polycrystalline diamond compact insert reaming tool A reaming tool which includes a body having reaming blades affixed thereto at azimuthally spaced apart locations around a circumference of the body is shown and described. The reaming blades each have at least one cutter attached thereto at selected posit... | 08/26/2003 |
| 5417292 | Large diameter rock drill A large diameter rock drill includes a tubular body and a central shaft longitudinally axially disposed with respect to the body. The shaft extends longitudinally axially above the top edge of the body and is attached to a drive means. A plurality of angu... | 05/23/1995 |
| 5133269 | Plant hole digger with cylindrical cutter This invention is comprised of an auger with fixed or replaceable tips designed to cut openings through sheet plastic or fiberglass ground coverings and drill, in a continuous operation, an appropriate diameter hole for planting seedlings or seeds as may ... | 07/28/1992 |
| 4813501 | Rotary mining bit A rotary bit which includes a bit body having a tapered, externally threaded neck located at one side of the bit body. The bit body includes three, flat, lateral side faces which extend at 120° to each other and thus lie in planes which would contain sid... | 03/21/1989 |
| 4448269 | Cutter head for pit-boring machine A rotatable cutter head for a pit boring machine used in reverse circulation drilling. The cutter head has cutter arrays including rotary cutters and drag cutters and disposed radially and circumferentially spaced positions on the cutter head, the drag cu... | 05/15/1984 |
| 4096917 | Earth drilling knobby bit A partially solid head bit having a flow passage therethrough located at approximately the center of the bit is shown. The bit is designed for use in conjunction with a hammer action drilling apparatus. The flow passage extends through a shank of the bit ... | 06/27/1978 |
| 3998282 | Earth boring auger An earth boring auger having a shaft and helical flights thereon and a plurality of disc cutters mounted below the flights and behind the leading edge thereof to engage the formation before it is engaged by the flights.... | 12/21/1976 |
| 3998283 | Earth boring auger An earth boring auger having a shaft and helical flights thereon and a plurality of disc cutters mounted below the flights to engage the formation before it is engaged by the flights.... | 12/21/1976 |
